t'.'rV, mm&&& \& MINERS' GUIDE CATALOGUE PRICE LISTS CALIFORNIA WIRE WORKS SAN FRANCISCO t - muSSalBSB Bras n ^LIBRARY OF THE UNIVERSITY OF CALIFORNIA. GIF'T OF" Received . ..... ^^ -.188 TH E MECHANICAL MINERS' GUIDE ISSUED BY THE CALIFORNIA WIRE WORKS SUCCESSORS TO A. S. HALLIDIE MANUFACTURERS Ot ROPE AND THE Four Pointed Steel Barb Fence Wire Office: No. 6 CALIFORNIA ST. SAN FRANCISCO, CALIFORNIA FOURTH EDITION NOTE. The Scales, Tables and Rules contained in this pamphlet have been carefully compiled and condensed from the best authorities, and care has been taken throughout to make use of only such as the requirements of the mechanic and miner call for. The compiler for many years resided and worked in the mining region, and often felt the want of a small pamphlet containing the weight and strength of different materials ; rules for calculating the velocity and power of water, etc., etc., and the strength and weight of ropes and chains and such general information. It is offered with a full description and explanation of the use of Wire Rope, Wire Rope transportations, transmission of power by Wire Rope, Cable Railroads, etc., to those interested, trusting to meet their approbation. CALIFORNIA WIRE WORKS Successors to A. S HALLIDIE. INDEX. A PAGE. Advantages of Wire Rope 9 and 10 Alloys and Compositions 76 Alloys Melting Point of 77 Angles Fall of Different 45 Animals Strength of 83 Annealed Stone or Weaving Wire 89 Application of Grip Pulleys 57 Areas of States, Territories, etc 14 Attaching Clips 41 B Babbitt Metal 76 Bailing Wire 88 Barbed Fence Wire 96 Bar Iron Weights of 65 Blasting 49 Blocks and Tackles Power of 11 Boiler Iron Thickness of Required by law 67 Boilers Shells of 73 Boiler Tubes Lap Welded 67 Brackets for Insulators 95 Brake Wheel and Grip Pulley 37 Bridges Wire Suspension 79 Broom Wire 90 Burglar Alarm and Annunciator Wires . 95 c Cable Railroads 64 Cables Wire For Susp. Flumes.. 19 & 81 Calculating Speed of Drums and Pulleys . 74 Call Bell and Annunciator Wires 95 Cements and Mortars 79 Chain Pump 78 Chain Weight and Strength 86 Clothes Line Wire 92 Columns Strength of 17 Conductors Lightning 25 and 92 Cones for Wire Rope 93 Coppered Wire 88 Copper Wire Electrical Properties of . . 83 Copper Wire Rope Conductors 92 Cords Wire 25 and 92 Crucible Steel Wire 90 Crushing Strength of Materials 18 D Derrick Fall Ropes 23 Derrick Guy Ropes. 23 Description of a Miners' Inch of Water.47 Drilling in Rocks 49 Drums and Pulleys, Calculating Speed of .74 E Earths, Rocks, Etc. Measure of 62 Economy of Wire Rope over Hemp and Manila , 15 Effect of Heat Upon Various Bodies 78 Electrical Properties of Copper Wire 83 Erection of Hallidie's Ropeway ... 32 to 45 Excavating, Hauling, etc 62 Expansion of Iron by Heat 12 F Fall of Angles 45 Fall Ropea for Derricks 23 Fencing Barbed Wire 96 Ferry Ropes (Iron and Steel) 19 Force of Steam and Temperature of Water 84 Form of the Groove of Sheaves and Pul- leys 81 G Galvanized Barbed Fence Wire 96 Galvanized Cones and Thimbles 93 Galvanized Wire. . . . . 88 G CONT'D. PAGE. Galvanized Wire Clothes Line 92 Galvanized Wire Rope for Ship Rigging. 13 Gas Pipes Sizes of 80 Gauges Diameter of Different 60 Gold Value of an Ounce of 75 Gravities Specific 24 and 25 Grip Pulleys 36, 54, 57 and 93 Groove of Pulleys 16 and 81 Guy Ropes for Derricks 23 H Hallidie's Patent Ropeway Descrip- tion of 26 to 31 Hallidie's Ropeway Suggestions as to the erection of 32 to 45 Hauling and Excavating 62 Heat -Effect of on various bodies 78 Heating and Warming Rooms 63 Hemp Rope Weight and Strength of . . 86 Hoisting Wire Rope for 15 Hoop and Scroll Iron 68 Horse Power 77 Insulators 95 Inventor of Wire Rope (Andrew Smith) 7 Iron, Expansion of by Heat 12 Iron Weight of Bar 65 Iron Wire of every description .... 88 to 90 Iron Wire Useful Data of 87 L Lap-Welded Boiler Tubes 87 Lightning Conductors 25 and 92 M Measure of Earths, Rocks, etc 62 Melting Point of Alloys 77 Metals To Convert into weight of different 65 Metals Weight of difierent Sheet 59 Miners' Inch of Water 47 Mode of making Wire Rope 9 Mortars and Cements 79 N Nails Length and Weight of Cut 71 Nails Wire 84 Ore Buckets for Ropeways 43 Overshot Waterwheel Rule to ascertain Power of.. ..48 Painted Barbed Fence Wire 96 Picture Cord 25 and 92 Pile Driving 77 Pipes Sizes of Gas 80 Pipes Velocity of Water in 46 Portable Steam Engine with Grip Pulley. 56 Posts and Columns Strength of 17 Power of Blocks and Tackles 11 Power needed to ascend R. R. Grades . . 82 Power Transmission of by Wire Rope.50 Price Lists 88 and 91 to 94 Pulleys Form of Groove of 16 and 81 Pulleys and Drums Calculating Speed of 74 Pulleys and Drums On -the proper size of 80 and 86 Pulleys for Rope Transmission Table of Sizes and Speed 63 Pulleys Sash for Wire Cord 93 Pump Chain 78 Pump Ropes for River Mining 49 R. PAGE. Railroads Street Worked by Wire Ropes 64 Railway Curves 82 Railway Grades, Power needed to ascend. 82 Resistance of Soils to running Water . . 46 River Mining Pump Ropes 49 River Pumps 78 Ropes See Wire Ropes Ropeways Price List of 94 Ropeways Wire 26 and 45 s Sash Cord 26 and 92 Sah Pulleys 93 Scutt's Patent Barbed Fence Wire 96 Self Dumping Ore Buckets 43 Sheet and Bar Brass Weights 68 Sheets Weights of different Metals .... 59 Shells of Boilers Resisting Pressure of. 73 Ships, Rigging Wire Rope for 13 Signal Cord 25 Sizes of Gas Pipes 80 Sizes Proper of Pulleys and Drums 80 and 86 Sizes of Wire Rope Table of 86 Smith, Andrew Inventor of Wire Rope 7 Solders Various kinds of 76 Sound Velocity of 80 Specific Gravities and Weight of Sub- stances 24 and 25 Splicing Wire Rope Long Splice 38 Spooled Wire (Iron and Tinned) 90 Spring Wire (Carbonated) 88 Standard Sizes of Washers 71 Staples 84 and 90 Stationary Engine with Grip Pulley 58 Station Frames for Ropeways 34 Steam Force of 84 Steel Barbed Fence Wire 96 Steel Wire 88 Strand Wire For Guys, Signals, etc . . 92 Street Railroads worked by Wire Ropes . 64 Strength of Animals 83 Strength Crushing of Materials 18 Strength of Iron Wire 87 Strength of Posts and Columns 17 Strength Tensile of Materials 12 Strength Tensile of Wire Rope 13 Strength Transverse of Materials .... 20 Strength of Wire Ropes 15 and 86 Submarine Telegraph Cables 81 Suspension Bridges 79 Suspension Carriageway Wire Rope.. 23 T Table of Wire Gauges 60 Table showing number of Nails and Tacks per pound 71 Table showing number of Railroad Spikes in 100 pounds 72 Table showing number of Rivets and Bars per pound 71 Table showing number of Washers in 100 pounds 71 Table showing sizes of Tanks and Con- tents 72 Table showing what Cast Iron Columns will bear 72 Table showing Value of Gold 75 Tabular Scale of Ropes and Chain 86 Telegraph Cables Submarine and Sub- terraneous 81 Telegraph Supplies 95 Telegraph and Telephone Wire . . 89 and 95 Temperature of the Earth 49 Temperature of Water and force of Steam. 84 Tempering Steel 74 Tensile strength of Materials 12 T CONT'D. PAGE. Tensile strength of Wire Rope 13 Terms of Purchase 88 Testimonials 29 and 30 Thickness of Boiler Iron required by law . 67 Thimbles for Wire Rope 93 Thorough-braces-Wire Rope for wagons. 92 Tiller Ropes 18 Tinned Wire 89 Tramways Wire 26 to 45 Transporting heavy loads 44 Tranverse strength of Cast Iron Bars. . .21 Tranverse strength of Materials 20 Transmission of Power by Wire Ropes.. 50 Transmission Pulleys Table of Sizes and Speeds 53 Transportation of Material by Wire Ropes 26 to 45 Tubes Lap Welded Boiler 67 u Ultimate strength of Materials 20 Use of Tabular Scale 86 Uses of Wire Rope 8 V Value of an ounce of Gold of different fineness 75 Velocity of Earthquakes 16 Velocity of Sea- Waves 16 Velocity of Sound 80 Velocity of Streams, etc 46 Velocity of Water in Pipes and Sewers . .46 Vineyard Strand 92 w Warming and Heating Rooms Notes on. 63 Washers Standard sizes of 71 Water Miners' Inch of 47 Water Power of Niagara Falls 47 Water Quantity flowing out of an open- ing 48 Water required in working Quartz 78 Water Temperature of 84 Water Velocity of in Pipes 46 Water Wheels Overshot Power of. . .48 Weight of Brass, Copper, Iron and Steel Wire 69 Weight of Bar Iron 65. Weight, length and size of Iron Wire. . . 87 Weight of Sheet and Plate Iron 66 Weight of square foot of Metal Sheets. .59 Weight of Substances 24 Weight of Wire Rope, Hemp Rope and Chain 86 Wire Cables for Suspension Flumes. 1 9 and 81 Wire Cord, Strand, etc 25 and 92 Wire Fencing 77 and 96 Wire Kinds of 75 and 88 Wire Nails. 84 and 90 Wire Rope for Derrick Falls 23 Wire Rope for Derrick Guys 23 Wire Rope for Ferries 19 Wire Rope General remarks 9 Wire Rope for Hoisting 15 Wire Rope for Lightning Conductors ... 92 Wire Rope Price list 91 Wire Rope for River Mining 49 Wire Rope for Ship Rigging 13 Wire Rope for Suspending Hydraulic Hose 19 Wire Rope Suspension Carriage-way . . .23 Wire Rope Table of Strength, Weights etc 85 and 86 Wire Rope-Thorough-braces for wagons . 92 Wire Ropeways or Tramways 26 to 45 Wire Staples 84 and 90 Wire Strantt for Guys, Signals, Fencing, etc 92 Wire Suspension Bridges 79 SAN FRANCISCO, CAL., 1882. We are prepared to furnish the Mining, Manufacturing, Shipping and Ferry Interests on the Pacific Coast, with Iron and Steel Wire Rope of all kinds, in any length, size and quantity desired, from our manufactory in San Francisco, on favorable terms. CALIFORNIA WIRE WORKS. The adaption of Iron Wire to the manufacture of Ropes, is due to Mr. Andrew Smith, a civil engineer by profession, and a native ol Dumfrieshie, in the south of Scotland. His first experiments were made in 1828. As a substitute for raw hide ropes, he employed as counterbalance ropes for shutters and eleva- tors; and the partial success he met with was encouraged by the great advance in the price of Russian hemp. His first patent was dated January 12th, 1835; his second patent was dated March 26th, 1836. A third patent was granted him on December 21st, 1836, and a fourth patent was granted him March 20th, 1 839; and at subsequent dates other patents were issued him for improvements in Wire Ropes and Wire Rope machinery. Since then Wire Rope has become an important industry, and has added much to the wealth of the country, in helping to develop the iron interests. Wire Rope is now generally employed for Mining, Ferry, Shipping and general purposes; and forty years' experience has proved that it possesses many great advantages over Hempen Ropes being lighter, stronger, more durable and cheaper than Hemp or Manila, and is not affected by atmospheric changes. The many purposes to which Wire Rope has been applied where Hemp Rope would soon have been destroyed, and chain found too heavy, soon in- duced its general adoption throughout the mining regions of the civilized world, wherever shafts and incline planes are sunk to great depths; and the universal preference given to it over other ropes and chain, is a sufficient guarantee of its superiority. On the Pacific Coast, the consumption of rope for mining purposes is very great. Until the erection of our works in 1857' 8 Wire Rope was not in the market, although the requirements of the mining and shipping interests had long demanded it. This demand we have since been able to supply, and have recently remodeled our works with machinery of the most approved pattern, capable of turning out all kinds of Flat and Round Wire Rope, which we guarantee to be equal to any made. Round Wire Ropes are made from charcoal iron, bessemer steel or refined crucible steel, galvanized or not, and of each of these, two kinds of Wire Rope are made, Coarse Rope having 42 wires, and Flexible Rope having 114 wires- The latter being used for hoisting, etc., when the sheaves or drums are of small diameter. In addition to the Round Ropes, Flat Iron or Steel Wire Ropes are made from 2 inches to 10 inches wide, and from J to li inches thick. It is almost impossible to specify the precise uses to which Wire Rope is adapted in preference to hempen ropes or chain; but for the following purposes it has been a long time in use, and in every respect is much preferred: For Hoisting from Deep Shafts and Incline Planes. For Guy Ropes for Derricks. For Pump Ropes for Driving River Machinery. For Suspension Cables for Water Conduits or Aqueducts. For Signal Cord. For Ferry Ropes. For Ships' Standing Rigging. For Tiller Ropes for Steamers. For Guy Ropes for Smoke Stacks. For Sash Cord for Window Sashes, Hanging Pictures, etc. For Power Ropes, for conveying power to any distance. For Wire Tramways. For Endless Wire Ropeway, for the transportation of material over moun- tainous and difficult roads, etc. For Steam Cultivation and Land Tillage. For Street Railroads. For Ships' and Tugs' Hawsers. For Thoroughbraces, etc., etc. For Store and Hotel Elevators. Lightning Conductors for the protection of Dwellings, Ships' Masts, etc. WIRE ROPE GENERAL REMARKS ON WIRE -ROPE. The numerous purposes to which rope is applied, its great cost being a large item in a mining company's expenses, necessitates the use of economy in its application; therefore, when it is satisfactorily proved, that by the application of Wire instead of Hemp Ropes, a saving can be effected, it should be a guarantee of its general adoption. When the machinery is properly arranged, and drums and pulleys properly proportioned, the durability of Wire Rope over the best quality of Hempen Ropes is as 3 to 1. But Wire Rope can be destroyed like other rope, if badly used; and as we do not claim for Wire Rope more than it deserves, the surest test is a fair trial; but we do claim for it the following advantages over other ropes, under a fair and legitimate trial: 1st. It is less than two-thirds the weight of dry Hemp Rope. 2d. It is but one-fourth the weight of a wet Hemp Rope. 3d. It is less than one-half the size for same strength. 4th. It does not stretch and shrink (being unaffected by the atmosphere), nor does it absorb moisture. 5th. It is three to five times as durable. 6th. The excessive heat of the Summer sun does not rotiit, nor does the moisture of Winter cause it to swell. 7th. It can be spliced as easily, wet or dry frozen or otherwise and more snugly and neatly than Hemp Rope. 8th. And lastly We do not have to send to Manila or Russia, or any other foreign country, for the raw material, but obtain it from the iron-fields of our own country, thus being essentially a home-manufactured article. 10 Wire rope is usually made of six strands, the core or heart around which it is formed being either hemp or wire; the former being preferred for hoisting ropes, or where the rope works around a sheave or draw. The strands are formed of six wires around a centre wire, thus giving in all 42 wires to the rope. This is the best form for a rope which has to work over sheaves and drums of large diameters, or in cases where the ropes are used as guys or stays. When sheaves and drums of comparative small diameter are employed, then the strands are composed of much smaller wires, and usually nineteen wires form each strand, giving 114 wires to the rope, and making a very soft and flexible rope. The rigidity or flexibility of a rope is also modified as the wire is either soft or hard. For a rope of great tensile strength, hard drawn wire is required, but if it is necessary to have a rope of extreme softness and flexibility, annealed wire can be used: but it must be born in mind that wire loses 40 per cent, of its tensile strength by annealing. Refined Crucible Steel Wire largely combines both qualities of great tensile strength, flexibility and toughness. The following are some of the Advantages of Wire Rope for Ships' Rigging, Etc.: 1. Wire Rope is not affected by the atmospheric changes, consequently does not stretch or shrink in dry or wet weather, avoiding the necessity of re- peated setting up as in Hemp. 2. Wire Rope is 40 per cent, less weight than Hemp, saving so much top hamper. 3. Wire Rope is very much smaller for equal strength, and having but four-tenths the surface of Hemp Rope exposed to the wind, enables the ship to run closer to the wind. 4. Wire Rope is spliced equally well in all kinds of weather, and much more neatly than Hemp. 5. The jib runs down Wire Rope freer, seldom requiring the down haul. 6. Wire rope presents a neat and trim appearance, looks ship-shape; and one suit of wire-rigging in the absence of accident, will last the ship's life. 7. Lastly, and to ship owners very important! Wire rope COSTS VERY MUCH LESS than Hemp or Chain. 11 Explanation of the Signs used in this Work. Addition or plus, . + Division, . . -5- Cube Root, Subtraction or minus Equal to, . . = Square, . Multiplication, . x Square Root, . ,/ Cube, .. On the Power of Blocks and Tackles. RULE FOR ASCERTAINING THE POWER TO BE EXERTED IN RAISING WEIGHTS BY PULLEYS. When only one Rope or Cord is Used. RULE. Divide the weight to be raised by the number of the parts of the rope engaged in supporting the lower or movable block. Ex. 1. What power is required to raise 1200 Ibs. when the lower block contains six sheaves, and the end of the rope is fastened to the upper block ? 1200 Ibs. -4- 12 = 100 Ibs., the power to be exerted. Ex. 2. Suppose the end of the rope is fastened to the lower blocks, what power is required ? 1200-7-13=92,1, Ibs., the power to be exerted. TO ASCERTAIN WHAT WEIGHT CAN BE RAISED BY CERTAIN POWER EXERTED. RULE. Multiply the number of the parts of the rope by the power exerted. Example. Suppose six parts of rope to be used and fifty pounds power exerted the weight that can be raised will be 300 Ibs. Note. The Weston differential or Doyle Chain Pulley consists of a double and single block, the upper block consisting of two chain sheaves, of different diameters, fixed to each other the lower block being a single chain sheave. The power gained being in proportion to the difference in the diameters of the two upper sheaves the smaller the difference the greater the power, and vice versa. The chain fall is endless and does not run back by the load being hoisted. Heavy derricks and cranes have recently been fitted up with wire rope tackle, two, three or four fold, iron blocks with sheaves 12 or 14 inches diameter, with a steel rope li inch circumference for a fall, works very much smoother than chain, and does not rot out like a Manila fall rope. 12 Tensile Strength of Materials. Weight or force necessary to tear asunder 1 in. square in Ibs. Metals. Copper Ibs. 32,500 Copper Wire " 61,200 Gold, cast " 20,000 Iron cast. ..Ibs., 18,000 to 30,000 " medium bar Ibs. 50,000 Iron Wire " 100,000 " annealed . . " 60,000 Lead, cast Ibs. " milled " Platinum Wire " Silver, cast " Steel soft " " razor " Ref d Crucible Steel Wire 1,800 3,320 53,000 40,000 120,000 150,000 175,000 Woods. Mahogany Ibs. Oak, American white .. " Oak, seasoned " Pine, "pitrh," " Teak, Java " Walnut.. . " 21,000 11,500 13,600 12,000 14,000 7,800 Ash Ibs. 16,000 Beech " 11,500 Cedar " 11,400 Elm " 13,400 Fir, strongest " 12,000 Lignum Vitae " 11,800 Miscellaneous Ar ticks. Brick Ibs. 290 I Slate Ibs. 12,000 Ivory, " 16.000 | Whalebone " 7,600 Note. The practical value of the above is about one-fourth. TO FIND THE STRENGTH OF DIRECT COHESION. RULE. Multiply area of transverse section in inches by weight given in the preceding table the product is the strength in Ibs. Example. What is the strength of a bar of medium iron 2 inches square ? Transverse section of 2 inches=4 inches, multiplied by 50,000. equals 200,000 Ibs., the answer required. The absolute strength of materials pulled lengthwise, is in proportion to the square of their diameters. Expansion of Iron by Heat. The tensile strength of metals varies with their temperature, generally decreasing with increase of temperature. 100 of heat will expand a bar of cast iron .0006173 or the 1620th of its length. 100 of heat will expand a bar of wrought iron .0006614 or the 1512th part of its length. 13 Galvanized Iron Wire Rope for Ships' Standing Rigging Possesses many advantages over Hemp, requiring no stripping or refitting, as Hemp Rope must have every few years ; and being once set up, it obviates the attention and trouble caused by the stretching and shrinking of Hemp, and by its extreme lightness, being but two-thirds the weight of Hemp, increases the ship's capacity for cargo. And the advantage derived from the smaller surface opposed to the wind, (Wire Rope being one-half the size of Hemp) especially in beating to windward, needs no comment while for the jib and flying jib stays, its smallness and smoothness permit the hanks to travel on it much more freely. EXTRACT FROM THE REPORT OF THE SECRETARY OF THE NAVY, 1867. "During the year, twenty-three vessels have been wholly, and several others partially wire rigged. Tests of the comparative strength of Wire and Hemp Rope, and reports of commanders of wire rigged vessels, have been so satisfac- tory, that the Bureau recommend the erection of a building, and the purchase of necessary machinery, for the manufacture of wire rigging" (at Charleston Navy Yard). EXTRACT FROM SAN FRANCISCO Times, AUGUST, 1867, IN REFERENCE TO THE BURNING OF THE SHIP " Blackiva.il? IN THIS HARBOR. " The forehold, where the fire originated, was burned nearly down to the shell the forecastle was completely destroyed, the foremast so badly burned that it will have to be taken out, and the houses on deck were also rendered useless. // was a fortunate thing that the ship's rigging was all wire; had she been rigged with hemp, the shrouds would, of course, have caught fire, and the masts and yards would in all probability have been burned, and the difficulty of saving her would have been doubled." Wire Rope possesses so many advantages for the standing rigging of ships that it is rapidly displacing every other kind of rigging. Tensile Strength of Wire Ropes. The tensile strength of Iron and Steel Wire Ropes, is about 40,000 Ibs. per inch area of Iron Rope, and 80,000 Ibs. per inch area of Crucible Steel Rope; or, 1 Ib. of Iron Wire Rope, 1 foot long, breaks at from 10 to 12 tons, and 1 Ib. of Steel Wire Rope, 1 foot long, breaks at from 18 to 20 tons. One-sixth to one seventh of the breaking strength of Iron and Steel Wire Rope, is con- sidered a safe working load. 14 Areas of States, Territories, Etc., in Square Miles. The following table gives the areas of the States and Territories according to the last census: O O 03 BJ S* * o . g sr B i fl, on If T*3" W s-i' 1-1 * CO p p pu IB 1 Lakes and ponds Total water surface . . Total land surface .... Alabama 52,250 113,020 53,850 158,360 103,925 4,990 149,100 2,050 70 58,680 59,475 84,800 56,650 36,350 64,690 56,025 82,080 40,400 48,720 33,040 12,210 8,315 58,915 83,365 46.810 69,415 146,080 76,855 110,700 9,305 7,815 122,580 49,170 52,250 41,060 96,030 45,215 1,250 30,570 42,050 265,780 84,970 9,565 42,450 69,180 24,780 56,040 97,890 5,740 620 100 440 260 80 540 240 270 80 610 60 10 390 300 200 515 330 600 450 380 375 540 300 500 60 260 360 340 630 410 630 35 80 120 115 300 250 140 500 200 10 180 200 800 80 50 520 560 135 420 85 10 20 265 1,600 10 40 790 710 100 805 2,380 280 145 1,400 90 10 4,440 495 510 650 440 600 550 380 400 3,300 3,145 2,350 275 1,485 4,160 470 680 770 670 960 300 360 120 1,550 3,670 300 1,470 230 165 400 300 3,490 2,780 430 2,325 2,300 135 1,590 315 51,540 112,920 53,045 155,980 103,645 4,845 147,700 1,960 60 54,240 58,980 84,200 56,000 35,910 64,090 55,475 81,700 40,000 45,420 29,895 9,860 8,040 57,430 79,205 46,340 68,735 145,310 76,185 109,740 9,005 7,455 122,460 47,620 48,580 40,760 94,560 44,985 1,085 30,170 41,750 262,290 82,190 9,135 40,125 66,880 24,645 54,450 97,575 5,740 Arizona Arkansas California 540 Colorado Connecticut 25 Dakota . Delaware 30 District of Columbia Florida 1,800 '150 2,250 45 310 135 110 Georgia Idaho Illinois Indiana Indian Territory . . Iowa 100 Kansas Kentucky ... . . 25 1,700 2,300 Louisiana 1,060 545 1,850 125 Maine Maryland Massachusetts 90 1,225 3,800 100 50 360 40 925 220 35 5 900 160 160 920 30 20 5 100 180 2,700 380 25 360 Michigan Minnesota Mississippi 30 Missouri Montana Nebraska Nevada New Hampshire . . New Jersey 205 New Mexico New York 350 3,260 North Carolina Ohio Oregon 50 Pennsylvania . Rhode Island 135 215 South Carolina Term essp.fi ..... Texas 2,510 Utah Vermont Virginia 1,780 1,380 Washington West Virginia Wisconsin 1,170 230 Wyoming Unorganized Territory .... Delaware Bay 620 100 620 100 Raritan Bay and lower New York Bay Totals . . 3.025.600 17.200 14.700 23 900 55 fiOO 970 non 15 Iron and Steel Wire Rope for Hoisting. For Deep Shafts, Incline Planes, or Slopes, Wire Rope is particularly well adapted; being so much lighter than other ropes or chain, requires proportion- ately less power to hoist it, and occupies less than half the space on the drum. Its durability is from three to five times that of Hemp or Manila, and its weight is not increased or its fibres destroyed by working in wet situations. Asa practical illustration - of the advantages of Iron Wire Rope over Hempen Rope, we submit the following: Shaft 500 feet, Load including cage 3,000 Ibs. 500 feet, 2 inch diameter, dry Hemp Rope weighs 650 Ibs. 500 feet, f inch diameter, Iron Wire Rope weighs 420 Ibs. Difference in favor of Wire Rope 230 Ibs. Allowing 1 minute hoisting time, then x =57,500 ft. Ibs. = If horse power saved by using Iron Wire Rope. The difference in favor of Crucible Steel Wire Rope is still greater, and may be summed up as follows: 1st. Crucible Steel Wire Rope is three times as durable as the best Manila or Hemp Rope. 2d. Crucible Steel Wire Rope weighs only four-tenths the weight of Manila of equal strength, when dry, and one-fourth when Manila or Hemp is wet. 3d. Crucible Steel Wire Rope is only one-third the thickness of Manila of equal strength. 4th. Crucible Steel Wire Rope possesses more springiness or elasticity than any other kind of Rope. 5th. The first cost of Round Steel Wire Rope is 75 per cent, the first cost of Manila Rope. From the above we invite Superintendents and Engineers of Mining Companies using Rope, especially in deep shafts, to the following analysis of comparative cost, etc. 1st. Round Steel Wire Rope has been employed in California for over twelve years, in vicinities of Grass Valley, Downieville and Columbia, and the durability usually exceeds four times that of Manila. 2d. Take, for instance, a Manila Rope 2 inches thick, 1,000 feet of this size Rope will weigh about 2,200 Ibs., when dry. Round Steel Wire Rope, same strength and length, will weigh 900 Ibs., wet or dry. Difference in favor of Steel Rope, 1,300 Ibs. For a 1,000 foot hoist, allowing two minutes, X -1 = 325,000 ft. Ibs. = 10-horse- power; using say J cord of wood at $6 16 per cord=$3 per day or $1,080 per annum, (360 days) expended in hoisting up a dead weight of Manila Rope over that of Steel Rope. Add to this the strain, wear and tear of the machinery, and you will ascertain approximately what the present outlay is for hoisting ropes. 3d. The thickness of Round Steel Wire Rope being one-third that of Manila of equal strength, it takes proportionately less room on the winding drum; thus 1,000 feet Steel Rope, f in. in diameter, will wind on a drum five feet diameter and four feet long, with a single layer, while it will require three layers of Manila. 4th. Steel Wire Rope, although possessing more springiness in itself, does not stretch out like Manila, but takes back the spring it has given out. This elasticity relieves the dead strain on the rope, especially in case of sudden start of the hoisting engine. SUMMARY : Life of Manila Rope, say 4 months, equal 3 ropes for 1 year, each rope costs, say $400 $1,200 Extra cost of fuel for hoisting dead weight, 1 year 1,080 Cost of 1 year running of Manila Rope $2,280 1 Round Steel Wire Rope equal to above 1 year 400 Annual saving effected by using Steel Wire Rope $1,880 We submit the above facts for your consideration and verification, modifying it to suit localities. In applying Round Wire Rope the groove of the pulley over which the rope runs should be of the same form and size as the rope employed, and all drums and pulley sheaves should be 100 times the size of the rope for coarse ropes, or 60 times for flexible wire ropes. Note. Within the past 10 years, Steel made by the Bessemer and Sieman- Martin processes has become quite popular, but it does not possess the value of refined crucible steel, and must not be confounded with it. Velocity of Earthquakes From experiment by mallet is: 19 miles per minute in granite. 14 " " " slate. 9J " " " sand. Velocity of sea-wave due to submarine earthquake is from 6 to 7 miles per minute, and height of the wave near to locality of earthquake from 30 to 60 feet. LeConte's Elements of Geology. 17 Strength of Posts and Columns. SAFE WEIGHT IN POUNDS PER SQUARE INCH FOR CAST IRON. Length in diameters. Hollow Cylinder. Solid Cylinder. Square _|_ and f Sections. 10 25,759 18,000 19,800 20 12,825 6,800 8,550 30 7,200 3,840 4,800 40 4,833 2,610 3,262 Thus a solid cylinder, 20 feet long, 1 foot diameter, will support safely 6800 Ib. per square inch. FOR TIMBER. Length in diameters 10 20 30 40 50 60 Pounds per inch of section 900 600 336 229 143 100 A timber post 30 feet long, 1 foot diameter, will safely sustain 336 Ibs. per square inch. Whipple's Bridge Building. For obtaining the strength of Columns, Prof. Rankine gives the following formula: fxs When P= breaking strength in Ibs., s sectional area, 1 length, p I 2 h least external diameter, all in inches, f and a constants h 2 having the following values for different materials. f a Wrought Iron 36,000 .00033 Cast Iron 80,000 .0025 Timber 7,200 .004 Examples. Required ultimate strength of hollow cylindrical cast iron column, 20 feet long, 10 inch external diameter, 1 inch thick. (f ) 80,000 x (s) 28.28 _ 92? 2ig 1 + .0025 ^-SrTTJi Required ultimate strength of rectangular timber post, 24 feet long, 10 inch x 10 inch. D _ (f) 7200 x(s) 100 ==lbb,/Dd IDs. 1 + 004 (1 ' )288 ' (h*) 10' 18 Required ultimate strength of solid wrought iron column, 18 feet long, 6 inches diameter. 36.000x28.27 ^ 216 1 + .00033 The foregoing formula apply to columns with ends perfectly true, and carefully bedded and fixed. If ends are rough from the foundry, multiply value of 'a' by 4. Vase's Manual for Railroad Engineers. Crushing Strength Of various materials, in Ibs. per 1 in. square. Metals. Cast Iron, American 129,000 Cast Iron, English 122,400 Wrought Iron, American . 83,500 Copper, cast 117,000 Steel, cast 295,000 Tin, cast 15,500 Wrought Iron, English . . 57,100 Lead, cast 7,730 Woods. Ash 6,663 Pine, pitch 8,947 Birch 7,960 Pine, white 5,775 Box 10,513 Spruce, white 5,350 Hickory, white 8,925 Oak, white 6,100 Teak 12,100 Walnut 6,645 Stones, etc. Brick, hard 2,000 to 4,000 Brick, common 800 to 4,000 Freestone, Conn 3,319 Granite, Quincy 15,30^ Marble 9,000 to 23,000 Mortar 120 to 240 Portland Cement 1, sand 1 1,280 Sandstone 2,800 to 10,000 Haswell. Tiller Ropes. As a Tiller Rope for river steamers, it is superior to chain, being lighter, cheaper, and more easily managed, the objection caused by the links of the slack chain catching in the rollers thus endangering the safety of the boat is entirely removed. 19 Morever, in case of fire on board, it is free from danger, while a Hemp of Raw Hide Rope, running as it does from one end of the boat to the other, is the first thing to become destroyed. With a Wire Rope, the pilot can stick to the helm as long as the fire will permit him. Wire Cables for Suspension Flumes or Water Conduits, For conveying water across deep gulleys, canyons, rivers, etc., with galvanized iron piping, joints, suspension rods, etc., etc., complete., the most economical way of carrying water over a deep canyon, etc. Guaranteed to keep in perfect order. Estimates given and materials furnished low. Wire Rope for Suspending Hydraulic Hose or Pipe clear of a Cave. The high banks down which a hydraulic hose descends are very apt to cave and destroy the hose. In order to insure its safety, a Wire Rope is stretched from the top of the bank to the bottom of the claim, at a sufficient angle to escape the bank in case of a cave. To this Wire Rope the hose is attached, and in such a position as to be perfectly secure from any danger of destruction by the caving of the bank. The loss of one hydraulic hose would buy many Wire Ropes. Iron and Steel Ferry Rope Stretched across the river, being lighter, is more easily set up, and being per- fectly round and smaller it allows the pulley blocks to run much freer and more rapidly over the rope and removes the sudden strain caused by checking (as with a Hemp Rope), when the boat is in the centre of the stream, and does not require the constant attention of the ferryman to set up or slack off the rope, according to the state of the weather; and as the sun does not rot it, it can be kept stretched during the Summer. Iron sheaves should not be used on Wire Ferry Rope, unless the groove of sheave properly fits the rope. For a Swinging Ferry, where the rope lays in the water, it does not rot nor does it, like Hemp, absorb the water until it becomes water-logged and clumsy. Hemp Rope, thus saturated, will have four limes the weight of Wire Rope placed in the same position; thus in slack water, with Wire Rope, there is no useless expenditure of the force of the current in carrying the rope across; and consequently, smaller and lighter buoys are required. N. B. We have had Wire Ropes working as above for seven years. Ferry Blocks furnished complete. 20 The Transverse Strength of Materials. The transverse strength of any beam or bar of wood or metal is as the square of the depth multiplied by the breadth and divided by the length between the supports. The transverse strength of any square beams of equal length, is as the cube of their depth and that of cylindrical beams as the cube of their diameter. The strength of a projecting beam is only one-fourth of what it would be if supported at both ends, and the weight applied in the middle. The strength of a projecting beam is only one-sixth of what it would be if fixed at both ends, and the weight applied to the middle. The strength of a beam to support a weight in the centre of it when the ends rests merely upon two supports, compared to one the ends being fixed, is as 2 to 3. Ultimate strength of different materials, one inch square and one foot long, weight suspended from one end. Breaking Value for weight. general use. Cast Iron 681 225 Wrought Iron, American 650 180 Wrought Iron, English 500 140 Wrought Iron, Swedish 665 182 Steel (extreme) 1918 400 Steel Puddled 800 190 Woods. Ash 168 55 Beech 130 3'2 Elm ,125 30 Hickory 250 55 Oak, American white 230 50 Oak, American live 245 55 Oak, Canadian 146 36 Pine, Pitch 136 45 Pine, American 160 50 Teak 206 60 Stones. Freestone, Conn 13 4 Freestone, N. Y 24 8 Granite, Quincy 26 8$ 21 Transverse strength of Cast Iron Bars of various figures, sections of each; 1 inch area, length 1 foot, fixed at one end, weight suspended at other. Form of Section. Breaking Weight. Square 673 Ibs. Square diagonal vertical.. . 568 " Solid Cylinder.... 573 O I Hollow cylinder. outer diameter. . . twice the inner . . 794 Rectangle 2x* . . 1456 3xi.. 2392 4x|.. 2652 Form of Section. Breaking Weight. Equilateral Triangle k edge up 560 Ibs. ' Equilateral Triangle edge down 950 " 2 in. deep x 2 in. wide x .268 inch thickness.. . 2068 " J. 2 in. deep x 2 in. wide x .268 inch thickness . . 555 Harwell. RULE TO FIND THE TRANSVERSE STRENGTH WHEN A RECTANGULAR BAR OR BEAM IS FIXED AT ONE END AND LOADED ON THE OTHER. Multiply the value in the preceding table by the breadth and square of the depth in inches, and divide the product by the length in feet. The quotient is the weight in Ibs. N. B. When the beam is uniformly loaded throughout its length, double the result. Example. What weight will a 2 in. square wrought iron bar bear, project- ing 2 ft. 6 in. in length ? Value for wrought iron 180 X 2x 2 2 =1440-r- 2^=576 Ibs. WHEN THE BEAM IS FIXED AT BOTH ENDS AND LOADED IN THE MIDDLE. RULE. Multiply the value in the preceding table by six times the breadth, and the square of the depth in inches, and divide by length in feet. The result must be doubled when its weight is evenly distributed along its length. Example. What weight will a bar of cast iron 2 in. square and 5 feet in length support in the middle, when fixed at the ends ? Value for cast iron 225 x 2 x 6 x 2 2 -t-5=2,160 Ibs. WHEN THE BAR OR BEAM is SUPPORTED AT BOTH ENDS AND LOADED IN THE MIDDLE. RULE. Multiply the value in the preceding table by the square of the depth, and four times the breadth in inches, and divide the result by the length in feet. Note. When the weight is uniformly distributed, double the result. 22 Example. What is the weight a cast iron bar 5 feet between the supports, and 2 inches square will support ? Value for cast iron 225 x 2 s x 4x4=7,200-7-5=1,440 Ibs. Example. How much will an ash beam support, being 10 feet between supports, 8 inches deep by 4 inches wide. Value for ash, 55 x 8 2 x 4x4=56,320-7-10=5,632 Ibs. TO FIND THE DIMENSIONS OF A BAR OR BEAM TO SUPPORT A GIVEN WEIGHT IN THE MIDDLE, BETWEEN FIXED ENDS. Multiply the length between the fixed ends in feet by the weight, and divide the product by 6 times the value of the material ; the result will give the product of the breadth and square of the depth. Example. What are the necessary dimensions of a beam of American pine, 20 feet long, to support a load of 15,360 Ibs. Ibs. ft. Assumed breadth. 15,360 x 20-r-6x50=1024-7- 4 =256. ^256=16; size should be 4 x 16 Note. In above example the result is 1, 024, which divided by the assumed breadth, 4 in., will leave 256, being the square of the depth 16, or by dividing the result 1,024, by the square of the depth (16 2 )=256, gives the breadth 4 in. 23 Steel Wire Rope for Derrick Fall Ropes Works to great advantage, especially if the hoisting is done by water or steam- power. The sheaves are made of cast iron 10 to 14 inches diameter, the groove of which conforms to the size of the rope for ordinary work, a Steel Rope i inch thick is sufficient for the purpose. A Fall of this kind properly put on, will outlast five or six Manila Falls, and occupy one-sixth the space on the drum. Wire Rope for " Derrick Guys." The universal adoption of the derrick for working deep claims in the river bars, etc., in preference to any other method, being much cheaper, and more expeditious, has drawn attention to its erection, and to the necessity of keeping the derrick mast in its proper position. With Manila Guy Ropes this is imposs- ible. The constant stretching and shrinking of Hempen Ropes require the almost constant slacking and tightening of the guys, according to the state of the atmosphere ; and when the mast leans out of its position, it is almost impossible to swing the boom to its proper point with the use of wire rope this is entirely prevented. Wire Rope as a Suspended Carriage Way. FOR DELIVERING ROCK, LUMBER, ETC., OVER OTHERWISE INACCESSIBLE POINTS. There are many points in the mountains where it is impracticable to build a roadway, railway track, or chute. In such a place, a practical and economical method for delivering material is to extend a Wire Rope from the upper to the lower points when it is not too long for a single span, stretching it sufficiently tight to clear all points and obstructions, and on this Wire Rope to run a pulley, below which hangs a basket or box containing the rock or if it is lumber, a pulley at each end of the lumber is necessary. In many cases in sending down rock, etc., it is found better to use three pulleys, two above and one below the rope, one of the upper pulleys being in advance and the other behind the lower one. By this means the pulleys are kept in the same direction as the rope. The pulley should be of a large diameter, the groove to be of the same size as the rope. The Endless Wire Ropeway system is adapted for delivering material across and over mountainous and difficult roads. (See page 25.) 24 Specific Gravities Weight of Substances. Water is well adapted for the standard of gravity. A cubic foot of rain water weighs 1,000 ounces, avoirdupois, and its weight is taken as the unit. When a body is immersed in water, it loses such a portion of its own weight as is equal to that of the fluid it displaces. Following is a list of specific gravities of various substances: Metals. Brass Plate 8380 Brass Wrie 8214 Copper Plates 8698 Copper Wire . 8880 Gold, pure cast 19258 Gold, 22 karat fine 17486 Iron, Cast 7207 Iron, Wrought Bar 7788 Iron Wire 7774 Lead, Cast.. ..11352 Mercury, 60 13580 Nickel 8008 Platinum, native 16000 Platinum, hammered . 20337 Silver, pure cast 10474 Silver, pure, hammered 10511 Steel Plates 7806 Steel Wire 7847 Tin, pure 7291 Zinc, cast 6861 Zinc, rolled.. . 7191 Dry Woods. Ash 722 Birch 567 Cedar 561 Cherry 715 Ebony, American 1331 Elder 695 Elm 600 Fir 512 Hickory, pig nut 792 Hickory, shell bark 690 Lignum Vitae . . 1333 Locust 728 Mahogany, Honduras 560 Mahogany, Spanish 852 Maple 750 Maple, Birdseye 576 Oak, Canadian 872 Oak, English 932 Oak, Heart, 60 years 1170 Oak, Live 1068 Oak, White 860 Pine, Pitch 660 Pine, White 554 Spruce 500 Sycamore 623 Teak 700 Walnut 671 Walnut, Black 500 Willow . 530 25 Specific Gravities (Continued.) Stones, Earth, Etc. Asphaltum 905 to 1650 Borax 1714 Brick 1367 to 1900 Brick, Fire 2201 " Work, in cement 1800 " " in mortar. 1600 to 2000 Cement, Portland 1300 Clay 1930 Clay, with Gravel 2480 Coal, Newcastle v 1270 Coal, Scotch 1259 to 1300 Coal, Anthracite 1436 to 1640 Earth, common soil . . . 2194 Granite, Quincy 2652 Divide the specific gravity of any of the above substances by 16, result will be the weight of 1 cubic foot in pounds. Limestone 3180 Marble, Italian white. . 2708 Quartz 2660 Salt, Common 1670 Slate 2672 to 2900 Sulphur, Native 2033 Trap 2720 Liquids. Oil, Linseed 940 Oil, Olive 915 Oil, Petroleum 878 Water, rain 1000 and the Wire Cord. FOR HANGING SASHES, PICTURES, DUMB WAITERS, CLOCK WEIGHTS, AND FOR SIGNAL CORD. This Cord is made from iron, steel, copper, galvanized or composition wire, is very light, durable and pliable, and is not subject to rot. It has been in use for many years for the purpose of hanging window sashes, being much preferred to any other cord. No house should be without it. It is the only safe cord to use for hanging pictures or mirrors, as moths cannot attack it. (See List of Prices, on page 92.) Lightning Conductors. Copper Wire Rope Lightning Conductors are much in use among the shipping, as a protection against the effects of lightning on a ship's mast. They are superior to any other conductor as a protection against lightning for church spires, tall chimneys, etc, are much more easily fixed, and do not get out of order. (See List of Prices, on page 92.) TRANSPORTATION OF ORE AND OTHER MATERIAL BY MEANS OF ENDLESS TRAVELLING WIRF, ROPES. The system of transporting material by means of an endless travelling wire rope has been well and thoroughly tested during the past six years under a variety of circumstances, which has proved its economy, simplicity, and advan- tages. The "Endless Ropeway," introduced in the year 1871, and protected by numerous U. S. patents granted to Mr. A. S. Hallidie, has been in operation for six years, and proved ilself in every way the most reliable, economical, and simple mode of conveying ores, rock, earth, lumber, produce, and material of all description, that can be conveyed in reasonable size packages over difficult roads, or over roads inaccessible to the most economical and rapid modes of steam locomotion. During the past six years, many very valuable improvements have been made in the details of construction, reducing the cost of the same and simplifying its operations. The principles of its operations will bear the strictest criticism, and an examination of the same by skilled or scientific mechanics, will demonstrate the great advantages over the many methods now in operation for similar purposes. Its mode of operation may be briefly summed up as follows: And endless wire rope is supported at intervals of from 150 to 200 feet, on grooved wheels or sheaves, which are secured to the ends of cross-arms, elevated on suitable posts or towers, about 16 feet above surface obstruction of the ground; the bights of the endless rope are placed around end sheaves or gap pulleys, placed horizontally, one at each extremity of the line. The end- less rope thus passes around horizontal end sheaves or grip pulleys, and is supported between these end sheaves at proper intervals, on bearing sheaves of such proportions that the friction is reduced to a minimum. The office of the end, or " grip " pulley, is to transmit power to or from 27 the endless rope, so that the rope cannot slip in the groove of the pulley, and the speed of the rope can be regulated by them. The conveyers or carriers used for moving the material, the form of which is regulated by the character of the material to be moved, are attached to the rope by means of steel clips of peculiar form, at distances regulated by the amount of the material to be moved. It will be seen that when the rope is set in motion, either by gravitation or by other motive power, it will carry with it the carriers or conveyers at such rate of speed as may be determined to be most suitable. These are so arranged that they pass over the bearing sheaves and around the end or grip pulleys. At any point in the line of the Ropeway the carrier can be loaded or discharged. The rope runs at an uniform rate of speed, about 200 feet per minute; and the carriers are loaded as they pass, and at the point of discharge are unloaded automatically. When the point of discharge is lower than the point of loading, the Rope- way will run by gravitation, if the angle of descent exceeds 8 degrees, or 1 in 7. When it isless than 8 degrees power has to be employed, and this can be attached anywhere on the line either steam, water or other motor. Where the line runs by gravitation, brakes are attached to the end grip pulleys, and the speed thus regulated, and at the same time the line is under control of the man in charge. For conveying ore from the mine to the mill, the carriers are wrought iron rectangular buckets, holding 100 Ibs. ore, and are self-dumping. If the rope travels at 200 ft. per minute and the ore buckets are 100 ft. apart and hold 100 Ibs. each, there will be delivered 200 Ibs. of ore every minute, or 6 tons per hour, or 60 tons per day of 10 hours this is about as much as two men can conveniently shovel into a cart, and for an ordinary line run by the gravitation of its descending load, this is all the attendance necessary. One of the men should go over the line once a day and see that the journals are properly oiled. For a line one mile long, running by gravitation and delivering 60 tons per day, the cost of delivering ore is under 15 cents per ton, as follows: Two men at $50 per month $100 00 1J per cent, wear and tear 75 00 10-12 per cent, interest on cost 50 00 Oil, &c 5 00 Cost per month $230 00 Sixty tons per day for 26 days per month= 14Jc. per ton. 28 By placing the buckets 50 feet apart, the amount of ore carried will be doubled, or 120 tons per day of 10 hours or by running 20 hours per day the same result will be obtained in both cases the number of men required for loading will be doubled, b'Jt the cost of carrying the ore will be reduced to about lOc. per ton per mile. When the angle of descent is very great, the descending load furnishes sufficient power to carry back and up to the Mine such material as may be needed and in several lines we have constructed, this saving, when taken into account, has been so great that it has not only brought the cost of transporting the ore to nothing, but has been actually a source of revenue. Again, in cases where a limited power is needed at the mine for pumping, etc., the power can be supplied from the mill by means of the grip pulleys and the endless wire rope. In brief, the foregoing system is applicable for the following purposes: For conveying ores from the mine to the mill. For conveying light loads of any material from place to place. For transporting produce and lumber across difficult points, and to ship- ping in an offing. For conveying passengers across gorges, chasms and over hazardous roads. For supplying water to reservoirs across chasms, etc. The advantages claimed are: No grading or road-building is required. It can work under all circumstances of weather, with great depths of snow on the ground, during heavy storms and freshets. It can run constantly without rest; as well during a, dark night as a clear day. It can cross deep gorges and chasms. It can pass around precipitous bluffs and perpendicular cliffs, or over the most rugged mountains. The rope can never leave the posts or sheaves. It can furnish and transmit power, when there is sufficient descent, by its own gravitation, or by an engine attached to either end. It can be constructed and worked cheaper than any other system or road can be constructed and worked under like circumstances. By using the duplex carrier it can convey any material, such as lumber, goods, ores, and passengers, from place to place. The letters and extracts herewith appended speak fqr themselves: 29 EUREKA, Nevada, July loth, 1872, 1". M. MARTIN My Dear Sir: On your leaving for San Francisco, it gives me great pleasure to hand you my written acceptance of the HALLIDIE TRAMWAY, put up by you upon our mine in Freiburg. It is a perfect success, discharging ten tons of ore per hour with two men's labor. It is perfectly simple in construction, and, as far as I can judge, there is nothing about it to ever get out of order nothing to wear out. While ours requires but about 2,500 feet of Wire Rope, I can see no reason why the line could not be extended almost indefinitely with equally happy results. Again, the carrying capacity might be doubled or quadrupled if desired. After several weeks trial upon our mine, the unanimous verdict of all who have seen it, is a complete, unquestioned success. If this can be of any service to you, use it in any way you think proper. Very respectfully, C. C. GOODWIN. EMMA HILL CONSOLIDATED MINING Co., LITTLE COTTONWOOD, Utah. Superintendent's Office, Sept. 28th, 1872. T. M. MARTIN, ESQ. Sir: The Ropeway constructed by you (HALLIDIE'S PATENT), for the Emma Hill Consolidated Mining Company, has been built in a most substantial and workmanlike manner, and is at this time in splendid working condition. I most cheerfully accept the work for the Company, and recommend it to others wishing a sure and speedy transit for ores over places impracticable for wagon roads, etc. Respectfully, L. U. COLBATH, Superintendent. [From the Utah Mining Journal, Salt Lake, Sept. 23, 1872.] THE VALLEJO ROPEWAY. The Vallejo Tunnel Company's Tramway in Little Cottonwood, built on the HALLI- DIE PATENTED PLAN, is a complete success. It is between 2,300 and 2,400 feet in length, and is supported by thirteen stations. The fall in this distance is about 600 feet, and the Wire Rope, which is five-eighths of an inch in diameter, will safely and easily deliver 100 tons in six hours. The machinery is automatic, loading and unloading the sacks or buck- ets. The stations are about 200 feet apart, and the entire apparatus is strong and safe. As the Wire Rope is elevated about 40 feet above the surface of the hill, the Tramway can be worked all winter long, without the slightest trouble. OFFICE OF THE CHICAGO SILVER MINING Co. , SALT LAKE CITY, DEC. i, 1874. J A. S. HALLIDIE, ESQ. Dear Sir: I have pleasure in stating that your Ropeway, put up at the Chicago Mine, Ophir District, Utah Territory, one year ago last summer, has been in constant use ever since, and with the most satisfactory results. The line, as you are aware, is constructed over an extremely rugged country, one and one-quarter miles in length. For the first half mile or so, it is down a very steep mountain side, whence it passes over the brow of another one; thence it continues down Dry Canon at an angle of 15 to 1 8 degrees. The structure is an entire success, the cost entire of which has more than been saved already, although it has not been worked up to half its capacity. In the estimate of earnings no account was taken of supplies sent to the mine, including water, etc., by no means an inconsiderable item. Truly Yours, W. S. GODBE. Manager Chicago S. M. Co. ( Limited. ) so SUPERINTENDENT'S OFFICE, EMMA HILL CONSOLIDATED M. Co., LITTLE COTTONWOOD, UTAH, DEC. 17, 1874 .1 A. S. HALLIDIE, ESQ. Dear Sir; In answer to your inquiry, I have to report that the Ropeway (built August, 1872, ) continues to work splendidly, and with but little wear on the rope. It has been everything that was promised, and has proved to be the cheapet way to move ores on steep mountain sides. Yours very truly, L. U. COLBATH, Superintendent. KERNVILLE, Kern County, j California, May 6th, 1878. j A. S. HALLIDIE, ESQ. Dear Sir: Your Patent Wire Ropeway, which I recently erected at the Harley Mine, near this place, works entirely satisfactorily, effecting a great saving in the cost of transporting ore from the mine to the mill, and in sending lumber and supplies to the mine. The cost of transporting the ore by pack train was five dollars per tonby your ropeway, it does not exceed fifty cents. The length is one mile and a half, the upper end having an elevation of over 3,000 feet above the lower end. It crosses a high canon at a height of over 300 feet from the surface of the ground with a single span of 750 feet ; and, altogether, the ground is among the roughest in the Sierra Nevadas. Respectfully yours, A. BLATCHLY, M. B. CHEMICAL LABORATORY AND GENERAL MINING OFFICES, j 504 Washington St., San Francisco, May I5th, 1878. \ A. S. HALLIDIE, ESQ. Dear Sir: In answer to your inquiry about the " Wire Ropeway," erected by my advice, for the Blue Jacket Mining Company, Bull Run District Elko County, Nevada, I have pleasure in stating that, under the following conditions, it works surpassingly well, and transports the ore by its own weight without other power, for nearly a mile, over a rough, descending grade of II degrees from the mine to the mill, at a cost of about 20 cents per ton; thereby Saving at least $2 per ton, compared with horses. Yours respectfully, J. S. PHILLIPS. OFFICE or STANDARD GOLD MINING Co. | SAN FRANCISCO, Oct. 8, 1878. \ A. S. HALLIDIE, ESQ. Dear Sir: The Ropeway you erected for us in December, 1877, has now been in use over nine months and has given very great satisfaction, enabling us to transport our ore from the mine to the mill, a distance of half a mile, without inter- ruption, and during all kinds of weather. We send over the line forty-seven tons per day of seven hours, and the saving, over the old method of hauling, is fully seventy-five per cent. In addition to the important fact of being able to get our ore regularly, regardless of the weather, we can send back water, lumber, etc., without cost. The expense of running the line, bringing down the ore, repairs,&c., is about ten dol- lars per day. We are well satisfied with the manner in which it works. JOHN H. BOYD, Vice-Presidant. WM. WILLIS, Secretary. GENERAL SUGGESTIONS FOR ERECTING HALLIDIE'S ROPEWAY In determining the route it is better to avoid vertical angles, i. e. as a rule to go over a hill (if it be not too great) rather than around it, and make the line as direct as possible, and in a true line, avoiding unnecessary angles. The general appearance of the Ropeway is shown in the large engraving, Fig. 1. Upper Terminus, In locating the upper terminus (at the mine) it is important to be as near the tunnel's mouth as possible. The horizontal grip pulley should be far enough below the level of the tunnel to enable sufficient tire to be dumped into the bin to keep the line running for a few days. A hopper-shaped ore bin is constructed, into whch the ore is dumped from the mine; at the lower. end it is supplied with a gate that permits about 100 Ibs. of ore to pass out at a time, (or enough to fill one of the ore boxes of the Ropeway, the ore is allowed to run out of the mouth of the hopper) into a scoop that is attached to a swinging arm, that swings around the shaft of the grip pulley, and while the travelling ore boxes on the rope are passing, the scoop travels with it and dumps its load into the ore box; or the ore can be simply shoveled into the travelling ore boxes as they pass by. The grip pulley should therefore be placed say 20 feet below bottom of tunnel. The frame that carries the grip pulley is constructed as shown in the diagram annexed, Fig. 2. The grip pulley shaft must be vertical, and guide pulleys lead the rope fair into the grips of the pulleys (these guide pulleys are placed as near to the grip pulley as possible); the frame must be well anchored to a good foundation. 33 FIG. 2. Side Elevation of Upper Grip Pulley Frame. FIO. 8. End Elevation of Upper Grip Pulley Frame. Lower Terminus. The lower terminus should be located at, or beyond the point where the ore is required to be dumped, and the grip pulley frame should be at sufficient elevation to prevent the ore backing up over the track. If the ore is to be transhipped, then an elevated hopper-shaped bin, with escape gates at the lower end will be most convenient or, the ore can be dumped at any suitable point on the line of the Ropeway. The grip pulley frame is constructed in the same manner as for the upper terminus, but the frame is placed on heavy car wheels that run on a suitable track. (Fig. 4.) Side Elevation of Lower Grip Pulley Frame. FIG. 4. 34 There should be allowed about thirty -five feet travel to each Ropeway, in order to cover the contraction, expansion and stretching of the rope. A weight is attached to a wire rope, working over a pulley, the other end of which is secured to the grip pulley frame. By this means a constant tension is kept on the line. In all cases the grip pulley should be set horizontally. At the point where it is desired to dump the ore, the ore buckets pass between guides and a stop knocks open the catch, (which holds the bottom in place) as the bucket is passing, causing it to drop its load; a counter balance attached to the bottom causes it to close again the guides are either of scant- ling or bar iron. Stations, About 150 feet apart, between the two termini, are constructed frames, called stations, from 14 to 50 feet high, according to circumstances, made from four sticks, which form a pyramid or tower, as shown in Fig. 5. STATION-FRAME - SIDE -ELEVATION. Fig. 5. 35 It is desirable to place the center of these towers in a true line, from shaft to shaft of grip pulleys of termini. In a long line this cannot always be done, and sometimes angles have to be formed to pass around bluffs. In such cases the center line should pass from angle to angle. Or, again it is necessary to pass around a curve of large radius; in this case the sheaves of the stations are so arranged that the rope leads fair into them and is slightly deflected after leaving the sheaves. This will be explained under the head of angles. At the top of these frames, at right angle to the line of the Ropeway; there is a cross arm usually of 8x8 timber; the length of the arm being about equal to the diameter of the grip pulley. The cross arm is well secured to the frame so as not to twist out of position. At the extremities of the cross arm are fitted cast iron frames that carry the bearing and guide sheaves. The ends of the cross arm are rounded off to eight inches diameter, and the cast iron frames are secured to them by means of bolts in the cast iron frames, which clasp the ends of the -arms. (See Fig. 6.) Fig. 6. The object in having the ends of the cross arm round, is to enable the cast iron station frames to be adjusted to the horizontal angles formed by the rope as it passes on to and off from the bearing sheaves. It must be provided that the station sheaves are so arranged that the rope always runs on them, fairly in line. 36 As the rope, when travelling, tends to pull the end of the cross arm in the direction it is running, the importance of having these arms well braced to resist this tendency will be understood. The station frames in some cases carry two sheaves, an upper and a lower one, the object of the upper one being to prevent the rope jumping out from its place in the groove of the lower sheave. When the rope runs with a con- stant downward strain on the lower pulley, a guard of cast iron is placed over the sheave to keep the rope in place, and the upper sheave is dispensed with, as shown in Fig. 6, and this latter is the method now generally adopted, except when the rope is apt to have an upward strain. Some judgment must be exercised in locating the stations, and usually the higher points are selected, for the reason that shorter towers have to be built and the rope is not diverted so much from its natural curve. Occasionally it is necessary to hold the rope down much below the point it would naturally sag; in such a case the larger sheave has only a quarter groove, and it is placed above; the smaller sheave has a full groove, and is placed below. See Fig. 5, left hand cross arm. But such cases are rare, and it is better to make a span of 300 or 400 feet between stations. The configuration of the ground will in all cases determine the height of the stations. If the ground is free from projections and obstructions, the height should not be less than 15 feet, where the stations are 150 feet apart, increasing in height with the distance between the stations. Considerations of depth of snow, crossing wagon roads, etc., must not be forgotten. Stations should be well secured to the ground, to resist gales, etc. After the stations and grip pulley frames are up, see that all the bearings are well oiled and the working parts run free; that the brake wheels of the grip pulleys work well, and that all your work so far is secure. Grip Pulleys, For light lines, grip pulleys are usually six feet in diameter, keyed to a shaft 3 inches in diameter, that runs in a step at the lower end, and a box at the upper end, under the pulley. Bolted to the arms of the grip pulley, above it, is a brake wheel with brake-band, furnished with adjusting screw and hand wheel. (See Fig. 7.) The brake is used in regulating the speed of the Rope- way, or stopping the same, when it runs by gravitation. Fig. 8 is a section of the rim of the Grip Pulley, showing the grips and mode of working, h is the rope which presses on the gripping jaws i i which rest on the points x x of the rim of the wheel L L. When the line is level and runs by power, this brake is dispensed with. GRIP-PULLEY w. BRAKE-WHEEL SECTIONAL ELEVATION Tig. 7- 38 Fig. 8. Stretching the Rope, The wire rope for an ordinary line of one mile length, is usually five-eighths of an inch diameter, and made of crucible steel wire. The coil if not on a reel, is placed on a temporary turn-table, and the outer end is led through the sheaves from station to station, until the coil is exhausted, great care must be taken to prevent any kink getting in the rope in order to prevent this, it is better to have the rope put on a reel. If the Ropeway is short, say one-half mile, the rope will probably be in one piece, and may be made of charcoal iron. The two ends are brought together at a place convenient for splicing, and by means of blocks and tackle the rope is hauled up taut, and the point of joining is marked by tying opposite each other a stop on each rope. The mode adopted for splicing is as follows : Splicing the Rope, There is about eighty-four feet of rope required to put in a good smooth long splice. The wire ropes employed in these Ropeways are made six strands of seven wires each, and a core or heart; as there are two rope ends to splice 39 together, there will consequently be twelve strands to be tucked in. Operators usually tie the stops that mark the length of rope, about where the center of the splice will be. In this case the usual way is to unlay each rope up to that point, and place the strands of rope A between the strands of rope B, the core or heart of the ropes A and B, being cut off so that the cores of the ropes abut against each other. (See Fig. 9.) There will be then forty-two feet of slrands each side of the stop, thus : Fig. 9. It is important that each strand should be in its proper place, so that none of them cross other strands, or that two strands be not where one strand should be (by placing your fingers between each other in natural position, this will be understood). Then strand No. 1 of rope A is unlaid, and strand No 1 of rope B follows close, and is laid snugly and tightly without kink or bend in its place, until within seven feet of the end, a temporary seizing is then put on securing ropes and strands at this point. Strand No. 1 of rope B is then cut off, leaving it seven feet long. Then strand No. 2 of rope A is unlaid, and strand 2 of rope B is laid in its place to within twenty-one feet of its end. Strand No. 3 of rope A is unlaid, and strand No. 3 of rope B laid in its place, within thirty- five feet of end. By this time you have reached within seven feet of the center, and reversing the operation, unlay strand No. 4 of rope B, and lay in its place strand No. 4 of rope A, to within seven feet of its end; unlay No. 5 of rope B, and lay in No. 5 of rope A, to within twenty-one feet of its end; finally, unlay No. 6 of rope B, and lay in its place No. 6 of rope A, to within thirty-five feet of its end. The strands are now all laid in their places and seized down for the time being, the ends are cut off, as with the first strand, to seven feet in length, and present the appearance, as in Fig. 10. 40 B> Fig. 10. The next operation is to tuck in the ends, and we will proceed to tuck in B 1. It will be remembered that the ropes are made of six strands laid around a core or heart, usually of hemp, of the same size. Two clamps (Fig. 11) made for this purpose, are fastened on the rope so as to enable the operator to untwist the rope sufficiently to open the strands and permit the core to be taken Fig. 11. ' out (see diagram) which is cut away, leaving a space in the center of the rope; the strand B 1, is placed across A 1, and put in the center of the rope in place of the extracted core, forming in fact a new core. A flat-nosed T-shaped needle used in splicing, the point of which is about one-half inch wide by three-sixteenths of an inch thick, rounded off to an edge, is well adapted to this purpose. The strand B 1 is laid in its entire length, the core being cut off exactly at the extremity of strand B 1, so that when the rope is closed around the inserted strand, the ends of the strand and core should abut. If there is much space left in the center of the rope without a core, the rope is liable to lose its proper form and some of the strands fall in, exposing the projecting strands to undue wear. The same operation is performed with A 1, running the other way of the rope, and so on, until all the strands are tucked in, which, if properly done, will leave the rope as true and round and as strong as any other part. Other operators prefer to start from the end of one rope and consequent end of splice. The operation is about the same, but the experience of the writer justifies him in saying that more care has to be used in bringing all the strands to an even tensions in the parts spliced. Other variations in detail are made according to the fancy or practice of the splicer, but after making a few successful splices in manner above described, the operator can afterwards vary to suit himself. The rope is now spliced into an endless rope, and is in position between the station sheaves, and around the end grip pulleys, so that by turning the grip pulleys at either end the rope should travel freely. B 41 Attaching the Clips. The next thing is to place the clips and hangers on the rope; the number of clips to be placed on the rope depend upon the amount of ore to be con- veyed, and if it is conveyed in ore sacks, a simple hook, or a L-shaped plat- form is attached to the clip, so that the ore sack may be hooked or laid on. Usually the mode of conveying the ore is by means of rectangular sheet iron boxes, the bottoms of which are on hinges, with counterbalances to close up the bottom and a catch to release or retain it. These boxes hold 100 Ibs. of ore. The clips are made of the best steel of the following shape: (see Fig. 12.) Tig. 12. The thin part is warmed and opened thus: (see Fig. 13.) Fig. 13. so that the rope can be slipped into it, the thin plate being immediately closed over and enveloping the same. The thin plate is drawn over to its place tightly by driving a key into the slot and securing by the set screw. It is thus closely secured to the rope, and capable of sustaining a very heavy load, the peculiar form of the clip enabling it not only to clasp but to rest on the rope. The outer washer is removed from the turned part of the clip and the eye of the hanger of the ore box is slipped on; the washer is then put back and the pin driven in to secure the same. The ore box is now on, ready for use. It 42 will be observed that the hanger of the box has a short bend in it; this is to compensate for the projection of the clip. The ore box is made of sheet iron, and the bottom is hinged at one end, the other end being held in place by means of a keeper, which has a projecting arm. As the loaded bucket passes the place where the ore is to be delivered, the projecting arm strikes a stop, which throws the keeper of the catch, releases the bottom of the ore box, and dumps the ore; a counterbalance attached to the bottom closes the ore box, and it is then ready for reloading. Figure 14 is a side view, and Fig. 15 an end view of the ore bucket. The clip will naturally hang at right angles to the line of the hanger, which is plumb or vertical when it is at rest. See Figs. 5 and 15. In same manner the remaining clips and ore boxes are put on. In no case leave the clip without a hanger, as it is liable to turn over and get foul between the station sheaves. Direction the Rope should Travel, In the absence of any reason to the contrary, the rule in regard to the direction the rope should travel, is, that the right hand rope recedes from you, as you look towards it, but it can be made to run either way. When the line has any descent, the most convenient place to put on the clips and boxes, is at the upper end right hand of the grip pulley. In a gravitation line, by loading the boxes as they are put on, they facilitate the moving of the rope. The Ropeway is now ready to put in motion, and if the angle of descent is sufficient, say eight degrees, it will deliver its load to the mill by gravitation, and carry back to the mines light loads, such as tools, provisions and a fair amount of drift timber. The ore boxes being self-dumping at the lower terminus, require no attendance, and one man can run a line of ordinary length however, the machinery has to be oiled and kept in order, and a man should pass over the line to oil and examine the station sheaves, the grip pulley gear, etc., every day. The rope should be kept well tarred (Swedish tar and linseed oil, 4 parts to 1, boiled together, should be used), and all running parts kept from rusting. No good mechanic need be told that it pays to construct work well, and to take care of it afterwards. SELF-DUMPING ORE-BUCKET WITH HANG Eft. Pig. 14. Fig. 15. Angles, In long lines, sharp angles have sometimes to be formed around bluffs, or the line may have to be diverted so as to reach various desirable points, either to discharge or receive ores, or to utilize water power, etc. In these cases the angle is made by using horizontal sheaves of about six feet diameter. A single sheave, placed horizontally, makes the angle of the rope, on which the clips project outward ; but to make the angle of the rope where the clips project inwards, two sheaves are required. See upper Fig. 16. 44 Pig. 16. The two sheaves of the interior angles must be placed at different levels, so that at the point of intersection of the rope, one part of the rope will be sufficiently high above the other part to permit the ore box to pass over it, say seven feet, and the sheaves must be set so that the rope leads fair on to them. When the angle is but a few degrees, and of great radius, a series of sta- tions are placed contiguous to each other, the sheaves of which are placed so that the rope leads on them fairly and is deflected slightly after leaving the sheaves in th,e direction of the angle desired. See lower diagram Fig. 16. To Transport Heavy Loads, When it is necessary to transport loads heavier than 200 Ibs. on a rope five-eighths inch diameter, the number of clips may be increased, and placed from two to four feet apart, as shown in Fig. 17. 46 Pig. 17. Estimates furnished, contracts entered into, or reliable men sent to super- intend construction. For further information, address the CALIFORNIA WIRE WORKS, LICENSEE, P. 0. Box 2050, SAN FRANCISCO, CAL. Secured under U. S. Patents Nos. 100,140, 110,971, 115,309, 115,310, 121,776, 124,391, 127,690 143,087, 162,915, and applications now pending. Fall Fall of Angles. of 1 in 1 equals angle of 45 degrees. 2 3 4 5 6 j 7 8 10 11 15 19 28 57 27 19 15 11 10 9 8 7 6 5 4 3 2 1 46 Velocity of "Water in Pipes and Sewers. Table of the heads of water necessary to maintain different velocities of water in 100 feet of pipe. V represents the velocities in feet per minute, and C the constant number for those velocities. V C 60 8.62 70 11.40 80 14.58 V C 90 17.95 100 21.56 120 29.70 V C 140 38.90 150 44. 180 62.13 Table of the constant number for different velocities. D represents diameter of pipe, in inches, and c the constant number for their diameters. D 4 5 c .028 .053 D 6 7 c .078 .104 D 8 RULE. Then when H represents the head of water, DxC .134 =H. Example. It is required to determine what head of water would be necessary to send water through 1500 feet of six-inch pipe, to an elevation of 80 feet, and at a velocity of 180 feet per minute. 0=62.13-=- (6+f.078) 6.078=10.22 in. which x 15 (the number of 100 feet) =153.3 in. (12 ft. 9i in.) this added to 80 gives 92 ft. 9i in., answer. The time occupied in an equal quantity of water through a pipe or sewer of equal length and with equal falls, is proportionately as follows: In a right line, as 90, in a true curve, as 100 and in a right angle as 140. Velocity of Streams and Resis Vel< In Feet Ordinary nature of current. per Sec. Very Slow 0.25 stance of Soils. scity Materials that resist these In Miles velocities and yield to per Hour. more powerful ones. 0.171 Wet Ground Mud. 0.341 Soft Clay. 0.682 Sand. 1.364 Gravel. 2.046 Stony. 2.284 Broken Stones, Flints, etc. 2.380 Collected Boulders, soft Schistose. 6.723 Hardened Rock. Gliding . . . . 0.50 Gentle 1.00 Regular 2.00 Ordinary Velocity , 3.00 Rapid Floods 3.35 Rapid Floods, (extraordinary) ... 3 50 Torrents and Cataracts . 9.86 47 The force of running water against an object, increases as the square of the velocity. The transporting power of water varies as the 6th power of its velocity. 3 inches per second will carry off fine clay. 6 " " fine sand. 8 " " " coarse sand, size of linseed. 12 " " " gravel. 24 " " " pebbles. 36 " " " angular stones size of hen eggs. Description of a Miner's Inch of Water. A miner's inch of water is a quantity that will flow through an inch aperture with a free discharge and under a constant pressure of six inches above the top of the opening. An aperture 12ixl2f inches, under a pressure of six inches above the top of the opening will discharge 200 inches, and is the basis of all measurements where water is retailed in small quantities in the States of California and Nevada. A miner's inch will discharge a quantity of water equal to 2,250 cubic feet or about 17,000 gallons, weighing 139,500 pounds, in 24 hours. Water will hold in suspension or solution 1.670 of its entire volume; i. e. , an inch of water (miner's inch) having a grade of four inches to the rod, will carry off in 24 hours a distance of ten miles, ten tons of heavy quartz, sand and iron. At one gravel mine in Nevada county, California, 25 cubic yards, or 40 tons of detritus or tailings, as the washed material is called, is moved from three to fifteen miles every 24 hours. One hundred miner's inches of water con- ducted through iron pipes and falling 350 feet vertically, and applied by means of a nozzle against a hurdy-gurdy wheel 16 feet in diameter, will furnish sufficient power to run an 80 stamp mill, besides carrying off all the ore which it has furnished the power to crush. Deadwood Times. Water Power of Niagara Falls. To pump back the water which passes over Niagara Fall would require the expenditure of 17,000,000 horse power, and assuming that 3 Ibs. of coal were used per hour, per horse power, there would be required an annual expenditure of 200,000,000 tons of coal. The weight of water falling over Niagara is about 100,000,000 tons per hour, falling a depth of 150 feet. 48 Overshot Water- Wheel. RULE TO ASCERTAIN POWER. Multiply the weight of water, in Ibs., dis- charged upon the wheel in one minute, by the height or distance, in feet, from the lower edge of the wheel to the center of the opening in the gate; divide the product by 50,000, and the quotient is the number of horses' power. Example. Suppose the weight of water discharged per minute is 39,000 Ibs. If the height of the fall is 23 feet, the diameter of the wheel is 22, what is the power of the wheel ? 22 feet less 8 inches clearance below=22' 4"=22.33. 39,000 x 22.33= 870.870H-50, 000=17.41 horse-power. RULE TO ASCERTAIN VELOCITY OF WATER AND WEIGHT PER MINUTE, IN POUNDS, DISCHARGED ON OVERSHOT WATER-WHEEL. Extract square of height of head of water (from surface to middle of gate) and multiply by 8 if the open- ing is large and head small; if the reverse, multiply by 5.5; or, from 8 to 5.5 in proportion to size of opening and head of water. Example. The dimensions of the stream are 2 by 80 inches, with a head of 2 feet to upper surface of water. What is the velocity of the water per minute ? 2 feet plus half of 2 ins.=25 ins.=2.08, the square of which is 1.44 x 6.5 (estimate of velocity )=9.36x 60=561.60 feet. What is its weight ? Example. 80 inches X 2x6739.20 inches (=561.60 feet)=.l, 078,272 -i-1728 (inches in a cubic foot)=624 cubic feetx62 Ibs. (weight of cubic foot of water)=39,000 Ibs. weight discharged in one minute. To Find the Quantity of Water which will Flow Out of an Opening. RULE. Multiply the square root of the depth of the water by 5.4; the product is the velocity in feet per second; this multiplied by the area of the opening in feet will give the number of cubic feet per second. Example. If the center of an opening is 10 feet below the surface of the water, and its area is 2 feet, what quantity of water will run out in one minute ? v/10=3.16x 5.4x2=34.1496 feet=(34 1-7 feet.) Water will fall through 1 foot in \ second, 4 feet in \ second, 9 feet in f second, and so on being actuated by the same laws as falling bodies. 49 Wire Rope for River Mining. For Pump Ropes, especially if of a great length, the advantage of using Wire Rope is obvious. A Grip Pulley, (see pages 37 and 38) is fixed to the shaft of the water wheel and pump, a Wire Rope is used to transmit the power. (See page 50.) The fact that when spliced and put on the grip pulleys, the Wire Rope does not stretch and allow the pump to stop working, is a matter of very great moment to the river miner, saving him an immense amount of trouble and care; and those who have once experienced the loss of time and money by the filling up with water of a large and deep pit, can more fully appreciate this. Blasting. In small blasts 1 Ib. powder will loosen 4J tons. In large blasts 1 Ib. powder will loosen 2f tons. One man can bore with a bit 1 inch diameter from 50 to 100 inches per day of 18 hours, in granite, or 300 to 400 inches per day in limestone. Two strikers and a holder can bore with a 2 inch bit 10 feet per day in rock of medium hardness. Temperature of the Earth. At the depth of 45 feet the temperature of the earth is uniform throughout the year; below this ihe temperature increases on the average one degree for every 53 feet. 60 Transmission of Power by Wire Ropes. 51 Transmission of Power by Means of Wire Rope. Wire Rope is employed extensively for conveying power from one point to another, as in the case of a mill situated half a mile or so from the water wheel from which power is obtained, and has been found to be very economical and durable. In France and Germany Wire Rope is used wherever an econ- omic motive power exists and can be attached, in many cases there being 5 or 6 miles between the motive power, and the machinery to be set in motion. Considerable attention is now paid to this method of transmission, the econ- omy and simplicity of its application are very strong recommendations in its favor. The manufacture of flexible ropes from steel wire, having great strength, with lightness and elasticity, insures the extensive application of this system. Evidently the power which can be transmitted by this plan, under given positions, depends upon the adhesion existing between the rope and the pulley, and the amount of this adhesion determines the velocity of motion of the rope, in order to transmit any given power. When, by peculiar construction of the pulley, the adhesion is made equal, or nearly so, to the strength of the rope, the velocity of the rope can be made to be quite slow, while at the same time transmitting great power. This is done by means of Grip Pulleys, where the rims of the pulleys are made up of a great number of jaws operating on the principle of the toggle joint, to clamp the rope firmly between them while they are drawn down together by the force of the strain that is put upon the rope. As soon as the rope is released from strain, the jaws open readily for its free escape as it leaves the pulley. From experiments made with Grip Pulleys of this construction, it has been ascertained that the gripping power varies with the angle at which the jaws are set, and is from 40 to 100 times the strain of the slack rope, or of the rope paying on from the slack side. The shape of that part of the jaws which receives the rope is the same as that of the rope, and since there is no slipping of the rope between the jaws, the wear upon it when in use is very slight. By reference to figs. 7 and 8 pages, 37 and 38, the operation of the clips will be readily understood. The rope is denoted by h; t, i are clips working on a fulcrum xx. The rope pressing on the clips at the bottom, as it enters them, causes them to close over it, gripping it securely and preventing its slipping. The part of the rim, k, is cast separately and bolted to the main wheel, /, by bolts. The rim of the wheel is cast with recesses to take the jaws, fitting to them and allowing them to work freely; while the jaws cannot possibly be displaced except by removing the part k, which is cast separate for this purpose. From this it will be readily understood that the rope is grasped as soon as the pressure begins to act on the jaws, and is released as soon as the pressure is removed, the whole acting 52 automatically and invariably. For conveying power over long distances, thisf feature is of the greatest value. In this system the rope is made of strength sufficient for the transmission, and moves at velocity of from 300 to 800 feet per minute. With the high speed system the rope is of smaller size, and travels at a velocity of from 1,500 to 6,000 feet per minute. In order to prevent the too rapid wear of the rope, the high speed pulleys are made with gutta purcha seating for the rope. A dovetailed groove is made in the rim of the pulley, into which the gutta percha is forced in the shape of small blocks, dovetailing on the sides, and having a score on the top. When the groove is filled with these blocks, they present a firm and elastic seat for the rope, giving the greatest adhesion possible under the circumstances; or, instead of using gutta percha blocks, hard rubber belting may be used, being cut in strips of sufficient depth for the dove- tailed groove of the pulley, and placed side by side, so that the rope will run on the edge of the rubber belting. The strips are driven in tight and held together by being glued. The accompanying cut shows the mode of constructing the high speed pulleys, and the advantage these have over the grip pulley is, that a much smaller rope can be used, the proportion being as the velocity of the rope. In many places in France and Germany, vast amounts of power are trans- mitted. At Shaffhausen, Switzerland, the water-fall is economized through an overshot water-wheel, and by means of Wire Rope, 600 horse-power is trans- mitted for a distance of one mile, and thence distributed by means of other smaller Wire Ropes to various factories. The whole Pacific Coast is full of water-powers, and a knowledge of this mode of transmitting power will make many of these water privileges available. [UNIVERSITY 53 In San Francisco there are two or three notable instances where wire rope transmission is used to great advantage. The Risdon Iron Works have used this method for many years a steel wire rope 2J inches in circumference run- ning over 10 feet sheaves at 5,000 feet per minute has transmitted 40 h. p. for six years without renewing the rope. At the Wire Mills of this Company a steel wire rope 2i inches in circumferance running over 8 foot sheaves has been running steadily for a period of 3 years at a velocity of 4,500 feet per minute, transmitting 80 h. p. A table of dimensions and velocities is here inserted, which will be found convenient for reference in ascertaining the size and speed of ropes and pulleys, to transmit any given power, either by high speed and smooth pulleys, or by low speed, and grip pulleys. Transmission Pulleys. APPROXIMATE TABLE OF DIMENSIONS AND VELOCITIES. HIGH SPEED. t CO CD 173 S W a> "d co O f % CIRCUMFERENCE B CD 3 CD 1, (3 CIRCUMFERENCE E< i o. OF ROPES. 1's, c*- ,_, ffi ci- o' OF ROPES. O O^ ff. s * CD W 2, B CD ?p o i 13 4 2, 1 "* 5' CD 1 B- cf 2L 1 Steel. Iron. cf CD Steel. Iron. | p- cf- et- " 2 fin 1 in 1000 4 80 1 in Hin 400 4 32 3 1 in H m 1000 4 80 1 in Hin 600 4 48 4 Sin H i n 1250 4 100 Hin Hin 400 4 32 5 in Hin 1500 4 120 Hin Hin 500 4 40 6 1 in Hin 1750 4 140 liin If in 600 4 48 8 liin Hin 1570 5 100 H in 2 in 509 6 27 10 liin Hin 1880 5 120 If in 2|- in 603 6 32 15 H in H in 2260 6 120 Hin 2iin 416 6 22 20 Hin Hin 2420 7 110 2 in 2| in 506 7 23 25 Hin Hin 2640 7 120 2i in 2f in 502 8 20 30 Hin Hin 2750 8 120 2 i n 2 in 603 8 24 40 H in 2 in 2260 9 80 2iin 2 in 424 9 15 50 Hin 2 in 2820 9 100 2iin 3 in 509 9 18 60 If in 2 in 3400 9 120 2in 3iin 502 10 16 80 Hin 2i in 3800 10 120 2|in 3i in 597 10 19 100 Hin 2| in 3200 12 85 2 in 3* in 603 12 16 120 Hin 2f in 3260 13 80 3 in 3f in 603 12 16 150 2 in 2J in 3620 14 80 3i in 4 in 616 14 14 200 2 in 2* in 5280 14 120 4 in 5 in 704 14 16 250 2i in 2f in i 4710 15 100 4 in 5J in 704 16 14 300 2iin 2fin 5650 15 120 4 in 6 in 704 16 14 LOW SPEED. In practice, for a distance less than 40 or 50 feet, there is not much economy in using Wire Rope, and the span between the pullevs should not exceed 400 feet; without supporting pulleys, which should not be smaller than the driving or driver pulley, and should also be rubber lined. Instead of supporting pulleys at intervals of from 150 to 400 feet according to circumstances, and a long rope; in some cases it is more advantageous to use a series of endless ropes and double pulleys, the ropes being much shorter are more easily repaired. For mode of splicing transmission ropes, see pages 38 40. Patent Grip Pulleys. These pulleys are made expressly for the purpose of transmitting power by means of.Steel or Iron Wire Ropes. By referring to the diagrams on pages 37 and 38, figs. 7 and 8, and the description on same pages, their mode of action can be readily understood. By means of these Grip Pulleys, it is possible to transmit power from one point to another, and to the limit of the strength of the rope employed. It will thus be seen that this arrangement is adapted for conveying power from a waterfall in a river, or where there is a large stationary engine, to any point desired, one, three or five miles distant, the Wire Rope being supported on pulleys at intervals in order to keep the rope off the ground, and lead it in the proper direction. As a means of transmitting power from a portable steam engine to a threshing machine it enables the farmer to keep his steam engine sufficiently far from the grain to avoid conflagration. It is the most economical and convenient mode of transmitting power, and is available for innumerable cases, and any locality, as the rope cannot slip in the groove, and the pulley does not wear the rope, as a concave drum, capstan, or figure of 8 pulley does. For hoisting works in a mine where a car is attached to both ends of the rope, for an incline, vertical or horizontal shaft, it is admirably adapted, econo- mizing in machinery and wear of rope. For steam plowing by means of ropes it works to great advantage, being much simpler in its action than any form of pulley. For transmitting power to rope traction, or cable street railroads, the Grip Pulleys are well suited. The Clay Street Hill R. R. Co. and the Presidio R. R. Co. employ two Grip Pulleys, side by -side, for working their rope on their inclines, the ropes running at 530 feet per minute. These pulleys are made all sizes, but the size of the grip pulley should not be less than 1,000 times the size of the wire from which the rope is made, or about 100 times the size of the rope. Accompanying cuts show the application of these pulleys for various pur- poses. 55 58 69 Weight per square foot of sheets of different metals: Thickness by Sharp <&* Brown's Gauge. GAUGE. THICKNESS. INCH. WROUGHT IRON. LB8. STEEL. LBS. COPPER. LBS. BRASS. LBS. 0000 .46 18.4575 18.7036 20.838 19.688 000 .40964 16.4368 16:6559 18.5567 17.5323 00 .3648 14.6376 14.8328 16.5254 15.6134 .3248 13.0351 13.2088 14.7162 13.904 1 .2893 11.6082 11.7629 13.1053 12.382 2 .2576 10.3374 10.4752 11.6706 11.0266 3 .2294 9.2055 9.3283 10.3927 9.8192 4 .2043 8.1979 8.3073 9.2552 8.7445 5 .1819 7.3004 7.3977 8.2419 7.787 6 .1620 6.5011 6.5878 7.3395 6.9345 . 7 .1443 5.7892 5.8664 6.5359 6.1752 8 .1285 5.1557 5.2244 5.8206 5.4994 9 .1144 4.5915 4.6527 5.1837 4.8976 10 .1019 4.0884 4.1428 4.6156 4.3609 11 .0907 3.641 3.6896 4.1106 3.8838 12 .0808 3.2424 3.2856 3.6606 3.4586 13 .0712 28874 2.9259 3.2598 3.0799 14 .0641 2.5714 2.6057 2.903 2.7428 15 .0571 2.2899 2.3204 2.5852 2.4425 16 .0501 2.0392 2.0664 2.3021 2.1751 17 .0452 1.8159 1.8402 2.0501 1.937 18 .0403 1.6172 1.6387 1.8257 1.725 19 .0359 1.44 1.4593 1.6258 1.5361 20 .0312 12824 1.2995 1.4478 1.3679 21 .0285 1.142 1.1573 1.2893 1.2182 22 .0253 1.017 1.0306 1.1482 1.0849 23 .0226 .9057 .9177 1.0225 .96604 24 .0201 .8065 .8173 .91053 .86028 25 .0179 .7182 .7278 .81087 .76612 26 .0159 .6396 .6481 .72208 .68223 27 .0142 .5696 .5772 .64303 .60755 28 .0125 .5072 .514 .57264 .54103 29 .01126 .4517 .4577 .50994 .4818 30 .0100 .4023 .4076 .45413 .42907 31 .00893 .3582 .363 .40444 .38212 32 .00795 .319 .3232 .36014 .34026" 33 .00708 .2841 .2879 .32072 .30302 34 .0063 .2529 .2563 .28557 .26981 For comparative thickness of gauge, see following page. 60 For the guidance of those using or requiring wire for particular purposes, the following table of the different gauges in use, may be of advantage: Nos. WORCESTER. Diameter. TRHNTON. Diameter. BIRMINGHAM. Diameter. Brown & Sharp. Diameter. Inches. Inches. Inches. Inches. .323 .305 .331 .32486 1 .283 .285 .300 ,28930 2 .263 .265 .280 .25763 3 .244 .245 .260 . 22942 4 .225 .225 .240 .20431 5 .207 205 .220 .18194 6 .192 .190 .200 .16202 7 .177 .175 .185 .14428 8 .162 .160 .170 .12849 9 .148 .145 .155 .11443 10 .135 .130 .140 .10189 11 .120 .1175 .125 .09074 12 .105 .105 .110 .08080 13 .091 .0925 .095 .07196 14 .080 .080 .085 .06408 15 .072 .070 .075 .05706 16 .063 .061 .050 .0508 17 .054 .0525 .045 .0452 18 .047 .045 .040 .0403 19 .041 .038 .035 .0359 20 .035 .033 .030 .03196 The Gauge in use at our Wire Mills is the Worcester Gauge. In ordinary wire, when great accuracy is requisite, the diameter desired should be given. Iron Wire. ITS SIZE, AREA, STRENGTH, WEIGHT AND LENGTH. Wire up to 19 is usually put up in bundles weighing 63 Ibs. Smaller than 19 is put up in bundles or stones weighing 12 Ibs. The strength of the wires on the following page is taken at 80,000 Ibs. per square inch; and the table of ultimate strength, is for hard or bright wire. Annealing or* softening reduces the tensile strength about 40 per cent. 61 Table showing Size, Weight and Length of Iron Wire ( Worcester Gauge). Gauge Ni'S. Diameter Inches. Area Square inch. Ultimate Strength in Ibs. Weight of 100 feet. Ibs. Wt. of i mile. Ibs. Feet in 63 Ibs. Feet. Feet in a,ooolb. Feet. 0000 .393 .121300 9,704 40.94 2163. 154 4,885 000 .362 .102900 8,232 34.73 1834. 181 5,759 00 .331 .086040 6,883 29.04 1533. 217 6,886 .323 .081930 6,754 27.66 1460. 228 72,30 1 .283 .062900 5,032 21.23 1121. 296 9,425 2 .263 .054320 4,345 18.34 968. 343 10,905 3 .244 .046759 3,741 15.78 833. 399 12,674 4 .225 .039760 3,181 13.39 707. 470 14,936 5 .207 .033653 2,692 11.35 599. 555 17,621 6 .192 .028952 2,312 9.73 514. 647 20,555 7 .177 .024605 1,968 8.03 439. 759 24,906 8 .162 .020612 1,648 6.96 367. 905 28,734 9 .148 .017203 1,376 5.08 306. 1,086 34,483 10 .135 .014313 1,144 4.83 255. 1,304 41,408 11 .120 .011309 904 3.82 202. 1,649 52,356 12 .105 .008659 693 2.92 154. 2,158 68,493 13 .092 .006647 532 2.24 118. 2,813 89,286 14 .080 005260 421 1.69 89. 3,728 118,343 15 .072 .004071 328 1.37 72. 4,598 145,985 16 .063 .003117 248 1.05 55. 6,000 190,476 17 .054 .002290 184 .77 41. 8,182 259,740 18 .047 .001734 138 .58 31. 10,862 344,827 19 .041 .001320 105 .45 24. 14,000 444,444 Ft. in is Ib 20 .035 .000963 .32 17. 3,750 625,000 21 .032 .000803 .27 14. 4,444 740,741 22 .028 .000615 .21 11. 5,714 952,381 23 .025 .000491 .17 9. 7,059 1,176,500 24 .023 .000415 .14 7.4 8,571 1,428,580 25 .020 .000314 .11 5.8 10,909 1,818,180 26 .018 .000254 .085 4.5 14,117 2,352,940 27 .017 .000227 .076 4.0 15,790 2,631,580 28 .016 .000201 .067 3.54 17,910 2,986,560 29 .015 .000176 .059 3.11 21,340 3,390,000 30 .014 .000154 .052 2.75 23,080 3,846,150 31 .013 .000133 .045 2.38 26,666 4,444,444 32 .012 .000113 .038 2.00 31,600 5,263,160 33 .011 .000095 .032 1.69 37,500 6,250,000 34 .010 .000078 .026 1.37 46,154 7,692,310 35 .0095 .000071 .024 1.27 50,000 8,333,333 36 .009 .000064 .022 1.16 54,545 9,090,909 37 .0085 .000057 .019 1.03 63,160 10,526,520 38 .008 .000050 .017 .897 70,600 11,764,700 39 .0075 .000044 .015 .792 80,000 13,333,333 40 .00725 .000041 .014 .739 85,715 14,285,710 62 Measure of Rock, Earth, Etc. 25 cubic feet of sand equal 1 ton. 18 cubic feet of earth equal 1 ton. 17 cubic feet of clay equal 1 ton. 13 cubic feet of quartz, unbroken in lode, equal 1 ton. 18 cubic feet of gravel or earth, before digging, equal 27 cubic feet when dug. 20 cubic feet of quartz broken (of ordinary fineness coming from the lode), equal 1 ton contract measurement. Quantity and Cost of Excavating, Hauling, Etc. -One man can shovel into a cart per day of 10 hours, s 10 cubic yards of hard ground, as gravel and clay mixed. \ Measured 12 " " loam, sand and clay. > in the 14 " " sandy soil. j bank. One man can pick and loosen ready for shoveling per day of 10 hours, 18 to 22 cubic yards, common earth. 9 " " compact earth, clay and stony. One man can excavate and throw 6 to 12 feet, 8 to 12 cubic yards common earth. 4 " " compact " One man can wheel on a level 100 feet, 20 to 33 cubic yards compact earth. 24 to 28 " " " gravel. Transporting earth under 100 feet the wheelbarrow is cheaper. " " over 100 and under 500 feet, one horse cart is cheaper. " " " 500 feet, ox cart is cheaper. For every foot vertical rise cost 24 to 1 for wheelbarrow, 14 to 1 for horse cart. Rock excavated increases in bulk about one half. Light sandy soil shrinks one eighth. Yellow clayey earth shrinks one tenth. Gravelly earth shrinks one twelfth. Will give cost of hauling per cubic yard. 63 To ascertain cost of hauling by horse cart for distances as follows: For 300 feet divide wages of cart and driver by 24 " 500 19 " 1,000 12 " 1,500 " ' 9 " 2,000 " " 7 " 2,500 6 " 3,000 " " " 5 Example. Suppose wages of driver $2.50, horse and cart $1.25, total $3.75, 2,000 feet will cost $3.75, divided by 7=53 4-7 cts per cubic yard. From experiments made, the comparative cost of loading, hauling and dumping easy dirt was as follows: Distance. Wheelbarrow. One Horse Cart. Ox Cart. Feet. Per cubic yard. Per cubic yard. Per cubic yard. 30 11 cts. 16.4 cts. 17.2 cts. 60 13.8 16.8 17.6 90 16.4 17.2 17.8 120 19 17.6 18.2 150 21.8 18 18.6 300 35 20 20.2 600 61.6 24 23.6 900 88.2 28 26.8 1,200 114.8 32 30.2 1,500 141.4 36 33.6 Wages being, laborer $2.00, horse, cart and driver $2.68, ox team and driver $3.20 per day, ploughing cost li cts per cubic yard. Notes on Warming and Heating Rooms. 100 cubic feet of space to be heated require 1 square foot of heating sur- face of pipe and coils. When difference of temperature outside and in is 69 f., 3i square feet of surface will condense 1 Ib. of steam per hour, 1 Ib. coal evaporates 8 Ibs. water, then 8x3^=25 sq. feet heating surface x 100=2500 cubic feet of space heated per hour. If 3 Ibs. coal are required per h. p. per hour, then 1 h. p. will distribute exhaust steam to heat 7,500 cubic feet of space. Allowance must be made for pipes to expand i inch for 8 feet in length= 6 1 <. Divide heating surface by 400= pro per area of pipe; thus, if treating sur- face is 1,200, size of pipe will be 3" area or 2" diameter. 1 superficial foot of steam pipe is required for each 6 feet of glass in windows, and for each 6 cubic ft. of air escaping through ventilators, and for each 120 superficial feet of wall and ceiling, 1 cubic foot of boiler required for each 2,000 cubic feet of space to be heated. 1 h. p. boiler is sufficient for 50,000 cubic feet of space, steam c 112. 64 Cable Railroads, The invention of Mr. A. S. Hallidie, were first constructed in the City of San Francisco in 1873, on Clay Street, which runs west from Kearny Street to the top of Russian Hill, reaching an elevation of 307 feet in a distance of 2,800 feet. The grades on Clay Street are very irregular, varying from 1 in 28 to 1 in 6, with several cross streets which are level at the crossings. The principles of its construction and operation are as follows: An ordi- nary double track is laid on the street flush with the surface; between each track and below the surface of the street a channel or tube is constructed about 2 feet deep by 16 inches wide, on the crown of which is an opening or slot inch wide running the entire distance of the tube. In the tubes are placed, about 40 feet apart, iron sheaves for a rope to run on, and at the places where the angle of the street changes upwards, similar sheaves of small diameter are placed to keep the rope down and to prevent it striking the crown of the tube. A wire rope, which is made endless by splicing, is placed in the tubes and around large horizontal sheaves at the ends of the track and the driving drum, which is situated in the engine house. When the driving drum in the engine house is set in motion it sets the rope in the tubes also in motion, the rope running on the sheaves up one tube and down the other. By connecting the moving rope to a car on the track in the street above, the car will of course be hauled along. To effect this a certain apparatus is provided called a gripper, which can be connected with or disconnected from the moving rope at will. The gripper is provided with a shank about | inch thick, which passes down through the opening in the crown of the tube, the gripping jaws being under the tube and the machinery for actuating the jaws being on the floor of the car at a con- venient height for the man in charge to control. By reference to the accompanying engravings this will be better under- stood. This system has up to this time (October, 1882) been adopted by seven different companies, five in San Francisco, one in Chicago and one in Dunedin, New Zealand. They are all working successfully and effect a saving in oper- ating of from 25 to 60 per cent, on horse cars, freeing the streets from the un- healthy deposit of the horses, saving wear and tear on the streets, furnishing an agreeable and pleasant mode of traveling, and enabling one to travel up the steepest streets without any need of compassion for overloaded, struggling horseflesh, or fear of being stuck on the heavy grades. The patents in the United States are controlled by a corporation called the Cable Railway Co., whose headquarters are in San Francisco. The ropes for nearly all the roads are made at our works; some of the ropes made by us have worn over two years. ac o . v r / / s ^ ' \ ^ v , ( .-V i SECTION THROUGH DUMMY & ROAD BED SHOWING CABLE AND GRIPPING ATTACHM 3JLfcSJi TY * i' J 5 in A . HG.2 PLATE Ul 00 s & s o s^ & s w 0. O X o o 2 o. Q_ 65 Weight of Bar Iron. Square, from f to 2J inch, and 1 foot long. Size Weight in in Inches. Lbs. Size Weight in in Inches. Lbs. Size Weight in in Inches Lbs. Size Weight in in Inches. Lbs. 1 .475 i 2.588 . If 6.390 If 11.880 i .845 1 3.380 H 7.604 2 13.520 ft 1.320 1$ 4.278 1ft 8.926 2i 17.112 * 1.901 It 5.280 U 10.352 2J 21.120 Round Bar, from f / 2J inches diameter and 1 /W /0^. Diameter. Wght. in Ibs. I .373 i .666 | 1.043 * 1.493 Diameter. Wght. in Ibs. I 2.032 1 2.654 H 3.360 It 4.172 Diameter. Wght. in Ibs. ' If 5.019 H 5.972 If 7.010 \l 8.128 Diameter. Wght. in Ibs. If 9.333 2 10.616 2* 13.440 2J 16.680 Flat Bar from Jxi to 5x1 1 /W long. Size Weight in Size Weight in Size Weight in Size Weight in in Inches. Lbs. in Inches. Lbs in Inches. Lbs. in Inches. Lbs. fxi 0.316 Ifxi 1.479 2ixf 3.168 ajxi 2.957 *xi 0.633 l|x| 2.218 2ixi 4.224 3|xj 4.436 fx| 0.950 Uxi 2.957 2^x| 5.280 3ixJ 5.914 |4 0.369 1M 3.696 2fx| 6.336 3ixf 7.393 |x| 0.738 2xi 1.689 2fxj 2.323 3ix| 8.871 Ixi 0.422 2xf 2.534 2Jxf '3.485 8Jxl 11.828 Ixi 0.845 2x* 3.379 2| x* 4.647 4xJ 3.380 lx| 1.267 2xf 4.224 2fx| 5.803 4xJ 6.759 Hxi 0.528 2xJ 5.069 2fx| 6.970 4xJ 10.138 Hxi 1.056 2Jxi 1.900 3xi 2.535 4x1 13.518 Hxf 1.584 2jx| 2.851 3xf 2.802 5xJ 4.224 Hx| 0.633 2*x{ 3.802 3xi 5.069 5x| 8.449 Uxi 1.266 2ixf 4.750 3x^ 6.337 5x 12.673 Hxf 1.900 2ixJ 5.703 3xi 7.604 5x1 16.897 IJxJ 2.535 2ixi 2.112 3x1 10.138 To convert into weight of other metals, multiply the above for Cast Iron by .93; for Steel x 1.01; for Copper x 1.15; for Brass X 1.09; for Leadxl.48; for Zinc x. 92. Weight of Sheet and Plate Iron. THICKNESS BY BIRMINGHAM WIRE GAUGE AND INCHES. SQDARE FOOT IN POUNDS. WEIGHT OF A THICKNESS. Weight, Pounds. THICKNESS. Weight, Pounds. B. W. Gauge. Part of an inch. B. W. Gauge. Part of an inch. 36 .004 .126 11 .120 4.48 35 .005 .202 or .125 5.054 34 .007 .283 10 .134 5.426 33 .008 .322 9 .148 5.98 32 .009 .364 5-32 or .15625 6.305 31 .010 .405 8 .165 6.605 30 .012 .485 T i .180 7.27 29 .013 .526 3-16 or .1875 7.578 28 .014 .595 6 .203 8.005 27 .016 .677 7-32 or .21875 8.79 26 .018 .755 5 .22 8.912 25 .020 .811 4 .238 9.62 24 .022 .912 i or .25 10.09 23 .025 1.018 3 .259 10.37 22 .028 1.137 9-32 or .28125 11.38 1-32 or .03125 1.259 2 .284 11.525 21 .032 1.31 1 .3 12.15 20 .035 1.416 5-16 or .3125 12.58 19 .042 1.695 .340 13.750 18 .049 1.975 11 -32 or .34375 13.875 17 .058 2.35 or .375 15.10 1-16 or .0625 2.518 00 .380 15.26 16 .065 2.637 13-32 or' .40625 16.34 15 .072 2.92 000 .425 17.125 14 .083 3.35 7-16 or .4375 17.65 3-32 or .0937 3.78 0000 .454 18.30 13 .095 3.85 15-32 or .46075 18.90 12 .100 4.4 00000 4 or .50 20.00 For STEEL PLATES multiply tabular number above (for size) by 1.01. Weight of Sheet and Plate Iron. THICKNESS IN INCHES. WEIGHT OF A SQUARE FOOT IN POUNDS. i Inches Thick. Lbs. per Square Foot. Inches Thick. Lbs. per Inches Square Foot, i Thick. Lbs. per Square Foot. 9-16 22.5 1 70.62 3 156.51 | 25.21 13-16 73. 14 ! 4 161.55 11-16 27.75 | 75.58 i 166.6 g 30.25 15-16 78.20 j 171.76 13-16 32.75 2 80.75 1 176.71 i 35.26 i 85.75 181.77 15-16 37.75 ^ 90.81 1 186.79 1 40.35 8 95.86 1 191.84 1-16 42.87 100.9 I 196.9 | 45.4 105.95 5 201.85 3-16 47.9 i 111. | 206.9 i 50.45 3 116.1 i 211.95 5-16 52.96 3 121.15 i 217. f 55.45 i 126.21 222.05 7-16 58.01 ^ 131.26 227.01 | 60.52 i 136.32 I 232.15 9-16 63.05 141.37 237.2 g 65.56 146.41 6 242.25 11-16 68.11 1 151.46 For STEEL PLATES multiply tabular number abov (for size) by 1.01. 67 Lap -Welded American Charcoal Iron Boiler Tubes. TABLE OF STANDARD SIZES. 1 ~ i S 8 *H g i g i 1 &!* a> fr'o ^ S 1 2 |l II E 3 s h "3 * a "*" IJ i I *o "3*2 3 ^~ O 1 rS a | S % J> .2 *~ [o Jaf-5; Q EQ ro 'a? >* X 1 a 2 fs S J ^"S a "S >^ H i t ( H SL M o a. h- 1 w * Ins. Ins. Ins. Ins. Ins. Feet. Feet. Ins. Ins. Lbs. 1 3.142 0.856 2.689 0.072 4.460 3.819 0.575 0.785 0.708 1* 3.927 1.106 3.474 0.072 3.455 3.056 0.960 1.227 0.9 H 4.712 1.334 4.191 0.083 2.863 2.547 1.396 1.767 1.250 if 5.598 1.560 4.901 0.095 2.448 2.183 1.911 2.405 1.665 2 6.283 1.804 5.667 0.098 2.118 1.909 2.556 3.142 1.981 2* 7.069 2.054 6.484 0.098 1.850 1.698 3.314 3.976 2.238 2i 7.854 2.283 7.172 0.109 1.673 1.528 4.094 4.939 2.755 2f 8.639 2.533 7.957 0.109 1.508 1.390 5.039 5.940 3.045 3 9.425 2.783 8.743 0.109 1.373 1.273 6.083 7.069 3.333 3i 10.210 3.012 9.462 0.119 1.268 1.175 7.125 8.296 3.958 3* 10.995 3.262 10.248 0.119 1.171 1.091 8.357 9.621 4.272 s| 11.781 3.512 11.033 0.119 1.088 1.018 9.687 11.045 4.590 4 12.566 3.741 11.753 0.130 1.023 0.955 10.992 12.566 5.320 *i 14.137 4.241 13.323 0.130 0.901 0.849 14.126 15.904 6.010 5 15.708 4.72 14.818 0.140 0.809 0.764 17.497 19.635 7.226 6 18.849 5.699 17.904 0.151 0.670 0.637 25.509 28.274 9.346 7 21.991 6.657 20.914 0.172 0.574 0.545 34.805 38.484 12.435 8 25.132 7.636 23.989 0.182 0.500 0.478 45.795 50.265 15.109 9 28.274 8.615 27.055 0.193 0.444 0.424 58.291 63.217 18.002 10 31.416 9.573 30.074 0.214 0.399 0.382 71.975 78.540 22.19 Thickness of Boiler Iron Required and Pressures Allowed by the Laws of the United States. PRESSURE EQUIVALENT TO THE STANDARD FOR A BOILER 42 INCHES IN DIAMETER AND J INCH THICK. Diameter. Thickness; . o4-in. in 16ths. 36-in. 38-in. 40-in. 42-in. 44-in. 46-in. Lbs. Lbs. Lbs. Lbs. Lbs. Lbs. Lbs. 5 169.9 160.4 152. 144.4 187.5 131.2 125.5 *i 158.5 149.7 141.8 134.7 128.3 122.5 117.2 ! 147.2 139.1 131.8 125.1 119.2 113.7 108.8 135.9 128.3 121.6 . 115.5 110. 105. 100. 3 124.5 117.6 111.4 105.9 100.8 96.2 92.0 3J 113.2 106.9 101.3 96.2 91.7 87.5 83.0 3 101.9 96.2 91.2 82.6 82.5 78.7 75.1 Weights and Dimensions of Gas Pipes. Inside Outside Weight Inside Outside Weight Diameter in Diameter in per foot in Diameter in Diameter in per foot in inches. inches. pounds. inches. inches pounds. i 0.40 0.24 3 3.5 7.54 0.54 0.42 3i 4.0 9.05 g 0.67 0.56 4 4.5 10.72 0.84 0.85 4 5.0 12.49 J 1.05 1.12 5 5.56 14.56 1 1.31 1.67 6 6.62 18.77 4 1.66 2.25 7 7.62 23.41 H 1.95 2.69 8 8.62 28.35 2 2.37 3.66 9 9.68 34.07 2* 2.8J 6.77 10 10.75 40.64 68 Weight and Thickness of Boiler Iron. 1-8 inc 3-16 ' 1-4 ' 5-16 ' 3-8 ' 7-16 ' 1-2 ' h we: ghs. . 5 I 74 ..10 ..124 ..15 ..174 ..20 ' )S. per squ iare foot. No. 1 No. 3 No. 4 No. 5 No. 7 Iron is 5-16 in ch thick. . . . 9-32 1-4 ii . . 7-32 3-16 Weights and Dimensions of Lap-Welded Iron Boiler Flues. Outside Diameter. Thickness W. G. Lbs. weight per foot. Outside Diameter. Thickness W. G. Lbs. weight per foot. If 14 if 2 2J 2} 2f 3 14 14 13 13 13 12 12 11 1.65 1.70 1.85 2.10 2.30 2.50 3.15 3.60 3i 34 3| 4 5 6 7 11 10 10 10 9 8 8 4.15 5.20 5.30 5.55 7.1 10.5 12.2 Hoop and Scroll Iron. NUMBER OF FEET IN A BUNDLE OF FIFTY-SIX POUNDS. HOOP IRON. SCROLL IRON. Size. Feet in T> Jl Size. Bundle. Width. Thick. Bundle. Width. Thick. Feet in f inches No. 21 815 4 inches No. 10 240 i 20 630 16 430 1 19 450 i 14 347 i 18 360 10 190 if 17 278 1 16 360 il 16 217 1 14 290 4 15 160 1 12 208 ii 15 139 1 10 160 2 14 110 i 16 310 i 14 249 i 12 175 1 16 270 1 14 216 1 12 152 Sheet and Bar Brass. WEIGHT fN POUNDS. -. ti o g sT , +3 M 03 tab SI ji !4i o> o OQ cs a i! * *M "o | 3-5:2 o> 2 Js rt M cS O 3 O 1 S * c If 1 ! |3 J? 03
er Cubic Foot.
70
Weight of Iron, Steel, Copper and Brass Plates.
DIAMETERS AND THICKNESS DETERMINED BY AMERICAN GAUGE.
(BROWN & SHARP'S.)
No. of
Gauge.
Size of
each No.
WEIGHT OF PLATES PER SQUARE FOOT.
Wrought Iron.
Steel.
Copper.
Brass.
Inch.
Lbs.
Lbs.
Lbs.
Lbs.
0000
.46000
17.25
17.48
20.838
19.688
000
.40964
15.3615
15.5663
18.557
17.533
00
.36480
13.68
13.8624
16.525
15.613
.32486
12.1823
12.3447
14.716
13.904
1
.28930
10.8488
10.9934
13.105
12.382
2
.25763
9.6611
9.7899
11.671
11.027
3
.22942
8.6033
8.7180
10.393
9.8192
4
.20431
7.6616
7.7638
9.2552
8.7445
5
.18194
6.8228
6.9137
8.2419
7.787
6
.16202
6.0758
6.1568
7.3395
6.9345
7
.14428
5.4105
5.4826
6.5359
6.1752
8
.12849
4.8184
4.8826
5.8206
5.4994
9
.11443
4.2911
4.3483
5.1837
4.8976
10
.10189
3.8209
3.8718
4.6156
4.3609
11
.090742
3.4028
3.4482
4.1106
3.8838
12
.080808
3.0303
3.0707
3.6606
3.4586
13
.071961
2.6985
2.7345
3.2598
3.0799
14
.064084
2.4032
2.4352
2.9030
2.7428
15
.057068
2.1401 '
2.1686
2.5852
2.4425
16
.050820
1.9058
1.9312
2.3021
2.1751
17
.045257
1.6971
1.7198
2.0501
1.937
18
.040303
1.5114
1.5315
1.8257
1.725
19
.035890
1.3459
1.3638
1.6258
1.5361
20
.031961
1.1985
1.2145
1.4478
1.3679
21
.028462
1.0673
1.0816
1.2893
1.2182
22
.025347
.95051
.96319
1.1482
1.0849
23
.022571
.84641
.8577
1.0225
.96604
24
.020100
.75375
.7638
.91053
.86028
25
.017900
.67125
.6802
.81087
.76612
26
.01594
.59775
.60572
.72208
.68223
27
.014195
.53231
.53941
.64303
.60755
28
.012641
.47404
.48036
.57264
.54103
29
.011257
.42214
.42777
.50994
.48180
30
.010025
.37594
.38095
.45413
.42907
31
.008928
.3348
.33926
.40444
.38212
32
.007950
.29813
.3021
.36014
.34026
33
.007080
.2655
.26904
.32072
.30302
34
.006304
.2364
.23955
.28557
.26981
35
.005614
.21053
.21333
.25431
.24028
36
.005000
.1875
.19
.2265
.2140
37
.004453
.16699
.16921
.20172
.19059
38
.003965
.14869
.15067
.17961
.1697
39
.003531
.13241
.13418
.15995
.15113
40
.003144
.1179
.11947
.14242
.13456
Specific
'3-ravitv. . .
7.200
7.296
8.698
8.218
Weight per Cubic Foot.
450.
456.
543.6
513.6
71
Standard Sizes of Washers.
Diam.
Size of
Hole.
Thickness,
Wire Gauge
Size of
Bolt.
Diam.
Size of
Hole.
Thickness,
Wire Gauge
Size of
Bolt.
!
j
11
ij
'5-16
5-16
1
7-16
4
9-16
i
No. 18
18
16
16
14
14
12
12
3-16
5-16
7-16
is
3-16
If
2
2*
24
2f
3
34
11-16
13-16
15-16
1 1-16
i
4
No. 10
" 10
" 9
" 9
" 9
" 9
" 9
g
I
i
Number of Washers in 100 Pounds.
Size.
No. to 100 Ibs.
Size.
No. to 100 fts.
Size.
No. to 100 K.S.
4
i
5715
4010
2235
f
i
1450
1185
940
H
}I
14
510
415
335
Tables Showing Number of Rivets and Burs to the Pound.
BELT RIVET* AND BUBS.
i
5-16
1
7-16
4
9-16
i
I
1
H
li
14
Burs.
No. 7.
8.
272
276
250
248
228
208
180
200
164
178
160
172
148
15?
112
136
116
110
100
104
84
96
80
69
345
390
' 9.
340
280
272
248
228
220
184
176
156
136
610
' 10.
544
448
384
340
304
300
?7?
?38
?04
716
' 12.
588
512
452
404
364
334
304
?7fl
985
' 13.
996
852
532
....
1630
Weight of Round Bolt Copper per Foot.
Weight per foot
Diameter. in length.
Weight per foot
Diameter. in length.
I
.755
l|
5.71
i
1.17
li
6.79
1.69
IS
7.94
2.31
H
9.21
i
3.02
12
10.61
H
3.82
2
12.08
Number of Nails and Tacks per Pound.
NAILS.
TACKS.
Title.
Size.
No. per Ib.
Title.
Length.
No. per ft>.
3 penny fine.
IJ inch.
760
1 oz.
inch.
16,000
3
4
li
480
14
3-16 "
10,666
4
14
300
2
i
8,000
5
if
200
24
5-16 "
6,400
6
2
160
3
i
5,333
7
2i
128
4
7-16 "
4,000
8
24
92
6
9-16 "
2,666
9
2f
72
8
8 "
2,000
10
3
60
10
11-16 "
1,600
12
31
44
12
f "
1,333
16
34
32
14
13-16 "
1,143
20
4
24
16
I
1,000
30
44
18
18
15-16 "
888
40
5
14
20
1
800
50
54
12
22
1 1-16 "
727
60
6
10
24
IJ "
666
6
fen
ce.
2
80
8
24
50
10
3
34
12
U
29
72
Railroad Spikes.
SIZE.
No. in 100
Lbs.
SIZE.
No. in 100
Lbs.
Length,
Inches.
Thick,
Inch.
Length,
Inches.
Thick,
Inch.
*j
3
5
5
5
5
5
7-16
i
7-16
*
9-16
8
351
267
473
326
260
197
172
84
H
54
6
6
6
4
9-16
4
9-16
1
237
193
146
207
175
131
Sizes of Tanks and Contents.
Diam.
Depth.
Gallons.
Diam.
Depth.
Gallons.
Ft.
12
14
16
18
20
22
Ft.
8
9
9
10
10
11
6767
10363
13535
19034
23499
31277
Ft.
24
26
28
30
32
34
Ft.
12
13
14
15
16
17
40607
51628
64481
79310
96253
115451
Cast Iron Columns.
WEIGHT THAT CAN BE BORNE WITH SAFETY BY CAST IRON COLUMNS IN 1000 LBS.
(Trenton Iron Works.}
LENGTH OF COLUMN IN FEET.
q :
5ft.
6ft.
7ft.
8ft.
9ft.
10ft.
12ft.
14ft.
16ft.
18ft.
20ft.
2
12.4
9.4
7.2
3
44
36
30
24
20
18
4
102
88
76
66
56
48
38
28
5
184
164
146
130
114
102
80
64
52
44
6
288
264
242
218
198
180
136
122
100
84
72
7
414
386
360
332
306
282
238
200
170
144
124
8
560
532
502
470
440
410
354
304
262
226
196
9
728
698
660
630
596
560
494
432
378
332
292
10
916
884
850
812
774
739
658
586
520
462
410
11
1126
1082
1056
1016
974
932
846
774
686
616
552
12
1354
1320
1281
1240
1196
1152
1056
966
878
799
720
13
1570
1530
1486
1440
1392
1292
1192
1094
1000
912
14
1798
1754
1706
1656
1550
1440
1332
1228
1130
15
!
2086
2040
1992
1940
1828
1712
1596
1482
1372
The above table is based upon the following conditions : The column
must be placed precisely perpendicular; both ends must be faced exactly at a
right angle with the vertical axis, and the load must be evenly distributed
over the whole face.
If both ends are rounded, the weight should be reduced to one-third of the
above; if one end is rounded, two-thirds should be allowed.
78
Shells of Boilers.
RESISTANCE TO INTERNAL OR BURSTING PRESSURE.
(From Haswdl. )
Bursting Pressure
Bursting Pressure
per square inch.
per square inch.
1
1
.2 1
sl
f'
1
13
sl
I
.If >
a