UC-NRLF 
 
 /i^4- 
 
 $B 7M Dflb 
 
iii 
 
No. 1986 
 
 DIRECTIONS FOR USING, MOUNTING 
 AND DISMOUNTING 
 
 I-PDR. AND 2.95-INCH SUBCALIBER GUNS 
 
 IN THE BORE OF SEACOAST GUNS AND MORTARS 
 
 (7 PLATES) 
 AND INSTRUCTIONS FOR USING THE 
 
 RELOADING AND RESIZING OUTFIT 
 FOR DRILL PRIMERS 
 
 {2 PLATES) 
 
 w R A P 
 
 JANUARY 18, 1904 
 REVISED JANUARY 10, 1907 
 REVISED APRIL 14, 1910 
 REVISED AUGUST 8, 1914 
 
 WASHINGTON 
 GOVERNMENT PRINTING OFFICE 
 
 J9i7 
 
1 
 
 Ing from 
 )ration 
 
No. 1986 
 
 DIRECTIONS FOR USING, MOUNTING 
 AND DISMOUNTING 
 
 I-PDR. AND 2.95-INCH SUBCALIBER GUNS 
 
 IN THE BORE OF SEACOAST GUNS AND MORTARS 
 
 (7 PLATES) 
 
 AND INSTRUCTIONS FOR USING THE 
 
 RELOADING AND RESIZING OUTFIT 
 FOR DRILL PRIMERS 
 
 {2 PLATES) 
 
 JANUARY 18, 1904 
 REVISED JANUARY 10, 1907 
 REVISED APRIL 14, 1910 
 REVISED AUGUST 8, 1914 
 
 WASHINGTON 
 
 GOVERNMENT PRINTING OFFICE 
 
 1917 
 
\j\ 
 
 cs<^^ 
 
 ^2 
 
 A^ 
 
 /• 9 .»!• ») 
 
Wab Depabtment, 
 Office of the Chief of Obdnance, 
 
 Washington, August 8, 191//. 
 This Manual is published for the information and government of the Regular 
 Army and Organized Militia of the United States. 
 By order of the Secretary of War: 
 
 William Cbozieb, 
 Brigadier General, Chief of Ordnance. 
 (3) 
 
 3G3i76 
 
DIRECTIONS 
 
 MOUKTING AiND DISMOUiNTLNG 1-POUKDER SUBCALIBEH GUNS 
 IN THE BORE OF SEACOAST GUNS. 
 
 6-INCH GUNS, MODELS OF 1900 AND 1903, AND 10 AND 12 INCH 
 GUNS, MODEL OF 1900. 
 
 DIRECTIONS FOR ASSEMBLING. 
 
 Chamber and bore of subcaliber gun and of large gun must be 
 perfectly clean. 
 
 Remove blank plugs from mushroom head and put on obturator 
 spindle plate with its two screws, tighten the screw heads up on the 
 plate, using the securing screw wrench for the purpose. 
 
 Insert loading tray, where provided, to prevent bruising the 
 adapters on the breech threads. 
 
 See that rear adapter wedge is all the way forward, and insert 
 subcaliber gun, w4th adapters (wedge uppermost), into chamber of 
 large gun, pushing it smartly forward with the handspike to cause 
 the front adapter to seat firmly in slope of chamber. 
 
 Supporting subcaliber gun with handspike, slip the bronze shoe 
 under rear adapter. 
 
 Having made sure that subcaliber gun is 'as far forward as it can 
 go, remove handspike. Slip locating gauge over obturator spindle 
 plate, leaving a space between gauge and spindle plate. Close breech 
 gently. If resistance is encountered, the gun is too far to the rear. 
 Open the breech and turn gun right handed. If no resistance is 
 encountered in closing, open breech and note whether gauge has 
 been pushed back against spindle. If it has not been pushed all the 
 way back, turn the gun left handed one turn for each 0.1 inch. Con- 
 tinue to try in this manner until the gauge is pushed just against 
 the spindle plate when closing the gun. 
 
 Having adjusted subcaliber gun until the locating gauge is pushed 
 exactly against spindle plate by closing breech, tighten the wedge 
 screw with clamping screw driver, setting the wedge firmly back 
 against rear slope of chamber to prevent subcaliber gun from turn- 
 ing. The gun is then ready for firing. 
 
 (5) 
 
lUlUXTi.ON^ FOR DIS.MOCNTING. 
 
 Insert io.nding tniy, if on<i is provided. 
 
 Ease up wedge screw and run wedge all the way forward, insert 
 handspike, lift on same to support the weight, remove adapter shoe, 
 jind pull the subcaliber gun to the rear and out. 
 
 This order must always be followed, for if the shoe is removed be- 
 fore the subcaliber gun is loosened, letting down the breech of the 
 subcaliber gun will cause the front adapter to bind in its seat and 
 there will be considerable difficulty in removing the subcaliber gun. 
 
 If the subcaliber gun sticks in the bore of the large gun, insert the 
 gun extractor rod into and through the bore of the subcaliber gun 
 until the foot on the front end of the rod can be caught against the 
 muzzle face of the subcaliber gun. Then slip the gun-extractor rod 
 strap over the rear end of the rod until it comes up against the breech 
 face of the larger gun. Apply the nut and screw up on the nut until 
 the subcaliber gun is loosened, after which remove the gun-extractor 
 rod. and proceed to remove the subcaliber gun as if it had not stuck. 
 
1-POUNDER SUBCALIBER GUN FOR 5-INCH GUN, MODEL OF 1900. 
 
 DIRECTIONS FOR ASSEMBLING. 
 
 Chamber and bore of subcaliber gun and of large gun must be 
 perfectly clean. 
 
 Eemove blank plugs from mushroom head and put on obturator 
 spindle plate with its two screws; tighten the screw heads upon the 
 plate. 
 
 Insert subcaliber gun, with its adapters, into chamber of large 
 gun, being careful to see that the outer circumference of the outer 
 ring of rear adapter is concentric with subcaliber gun, and push it 
 forward with the handspike until the center support is seated firmly 
 in slope of chamber. Also see that the rear face of the rear adapter 
 is in contact with the front face of the breech hoop on the subcaliber 
 gun. This will -facilitate the handling of the shoe. 
 
 Supporting breech of subcaliber gun with handspike, turn outer 
 ring of rear adapter by pushing on lug provided for that purpose 
 with dismounting pin as far to the left as the stops will permit. The 
 rear adapter at this time is abutting against the set screw in body of 
 subcaliber gun. 
 
 Screw gun, further forward until shoe can be inserted loosely. 
 This is necessary because shoe is too large to pass between cylindrical 
 part of breech hoop and choke of powder chamber. 
 
 Now screw gun back until about ^ inch or 1 inch in rear of proper 
 position. The eccentric and adapter will turn with the gun because 
 not locked by shoe. 
 
 Secure subcaliber gun by inserting the shoe beneath the rear 
 adapter. 
 
 Screw gun forward to its proper position as indicated by the 
 locating gauge. Nothing prevents this, as set screw is now moving 
 forward and away from adapter. 
 
 Having made sure that subcaliber gun is as far forward as it can 
 go, remove handspike. Slip locating gauge over obturator spindle 
 plate, leaving a space between gauge and spindle plate. Close breech 
 gently. If resistance is encountered, the gun is too far to the rear. 
 Open the breech and turn gun right handed. If no resistance is 
 encountered in closing, open breech and note whether gauge has 
 been pushed back against spindle. If it has not been pushed all the 
 
 (7) 
 
8 
 
 WRY back, turn the gun left handed, 1 turn for each 0.1 inch. Con- 
 tinue to try in this manner until the ,gauge is pushed just against 
 the spindle plate when closing the gun. ^' / 
 
 Having adjusted subcaliber gun until the locating gauge is pushed 
 exactly against spindle plate by closing breech, tighten screw of rear 
 adapter shoe with screw driver, thus tightening the adapter and pre- 
 vent the gun from moving forward. 
 
 The gun is then ready for firing. 
 
 DIRECTIONS FOR DISMOUNTING. 
 
 Ease up adapter shoe screw, insert handspike, lift on same to sup- 
 port weight, and remove adapter shoe. 
 
 Using the dismounting pin, turn outer ring of rear adapter to the 
 right until it stops, then pull gun to the rear and out. 
 
 A small set screw is let into the body of the subcaliber gun just 
 forward of the rear adapter. This set screw must be removed when 
 it becomes necessary to remove the rear adapter, but must be re- 
 placed when rear adapter is put back on the gun. 
 
 The dismounting pin is provided in case of necessity for removing 
 adapters. 
 
 If the subcaliber gun sticks in the bore of the large gun, insert the 
 gun extractor rod into and through the bore of the subcaliber gun, 
 until the foot on the front end of the rod can be caught again^ the 
 muzzle face of the subcaliber gun; then slip the gun extractor-rod 
 strap over the rear end of the rod, until it comes up against the 
 breech face of the larger gun. Apply the nut and screw up on it 
 until the subcaliber gun is loosened, after which remove the gun 
 extractor rod and proceed to remove the subcaliber gun as if it had 
 not stuck. 
 
4-INCH DRIGGS-SCHROEDER AND 4.72-INCH AND 6-INCH ARM- 
 STRONG GUNS. 
 
 DIRECTIONS FOR ASSEMBLING. 
 
 Chamber and bore of subcaliber gun and of large gun must be 
 perfectly clean. 
 
 Insert subcaliber gun, with supports, into bore of large gun, push- 
 ing it completely forward with the handspike to cause the flange of 
 rear adapter to seat firmly against the tube of large gun. 
 
 Tighten expanding screw in rear adapter to clamp the adapter 
 sleeve against' wall of chamber, using the clamping screw driver. 
 The gun is then ready for firing. 
 
 DIRECTIONS FOR DISMOUNTING. 
 
 Ease up expanding screw, insert handspike, lift on same to sup- 
 port the weight, and pull the subcaliber gun to the rear and out. 
 
 The dismounting pin is provided in case of any necessity for remov- 
 ing front adapter or supports. 
 
 If the subcaliber gun sticks in the bore of the large gun, insert the 
 gun-extractor rod into and through the bore of the subcaliber gun 
 imtil the foot on the front end of the rod can be caught against the 
 muzzle face of the subcaliber gun. Then slip the gun-extractor rod 
 strap over the rear end of the rod until it comes up against the breech 
 face of the larger gun. Apply the nut and screw up on the nut until 
 the subcaliber gun is loosened, after which remove the gun-extractor 
 rod and proceed to remove the subcaliber gun as if it had not stuck. 
 
 103939—17 2 (9) 
 
5 AND 6 INCH GUNS, MODEL OF 1897, AND 6-INCH GUNS, MODELS 
 OF 1905, 1908, 1908 Mi, AND 1908 Mii. 
 
 DIRECTIONS FOR ASSEMBLING. 
 
 Chamber and bore of siibcaliber gun and of large gun must be 
 perfectly clean. 
 
 Put on obturator spindle plate with its two screws, using the screw- 
 driver for the purpose, and tighten the screw heads upon the plate. 
 
 Insert subcaliber gun, with adapters, into chamber of large gun, 
 pushing it smartly forward with the handspike to cause the front 
 adapted to seat firmly in slope of chamber. 
 
 Having made sure that subcaliber gim is as far forward as it can 
 go, remove handspike. Slip locating gauge over obturator spindle 
 plate, leaving a space between gauge and spindle plate. Close breech 
 gently. If resistance is encountered, the gun is too far to the rear. 
 Open the breech and turn gun right handed. If no resistance is 
 encountered in closing, open breech and note whether gauge has 
 been pushed back against spindle. If it has not been pushed all the 
 way back, turn the gun left handed one turn for each 0.1 inch. 
 
 Continue to try in this manner until the gauge is pushed just 
 against the spindle plate when closing the gun. 
 
 Having adjusted subcaliber gun until the locating gauge is pushed 
 exactly against spindle plate by closing breech, tighten expanding 
 or clamp screw with clamping screw driver. After this tighten the 
 thread clamp screw to prevent the gun from turning. The gun is 
 then ready for firing. 
 
 DIRECTIONS FOR DISMOUNTING. 
 
 Ease up expanding or clamp screw, insert handspike, lift on same 
 to support the weight, and pull the subcaliber gun to the rear and 
 out. 
 
 The dismounting pin is provided in case of any necessity for 
 removing front adapter or muzzle support. 
 
 If the subcaliber gun sticks in the bore of the large gun, insert the 
 gun-extractor rod into and through the bore of the subcaliber gun 
 until the foot on the front end of the rod can be caught against the 
 muzzle face of the subcaliber gun; then slip the gun-extractor rod 
 strap over the rear end of the rod until it comes up against the breech 
 face of the larger gun. Apply the nut and screw up on the nut until 
 the subcaliber gun is loosened, after which remove the gun-extractor 
 rod and proceed to remove the subcaliber gun as if it had not stuck. 
 
 (11) 
 
8-INCH GUNS, MODEL OF 1888, 10 AND 12 INCH GUNS, MODELS OF 
 1888 AND 1895, AND 14-INCH GUNS, ALL MODELS. 
 
 DIRECTIONS FOR ASSEMBLING. 
 
 Chamber and bore of snbcaliber gun and of large gun must be 
 perfectly clean. 
 
 Remove blank pressure plugs from mushroom head and put on 
 olitiirator spindle plate with its two screws, using the tit wrench. 
 Tighten the screw heads upon the plate. 
 
 Insert the loading tray, if one is provided, t6 prevent bruising the 
 adapters on the breech threads. 
 
 Insert subcaliber gun, with adapters, into the chamber of large 
 gun, pushing it smartly forward with the handspike, to cause the 
 front adapter to seat firmly in slope of chamber, which it is tapered 
 to fit. 
 
 Tighten clamp-wedge screws in rear adapter to cause clamp wedge 
 to expand the adapter against walls of chamber, using the clamping 
 wrench. 
 
 Having made sure that subcaliber gun is as far forward as it can 
 go, remove handspike. Slip locating gauge over obturator spindle 
 plate, leaving a space between gauge and spindle plate. Close breech 
 gently. If resistance is encountered, the gun is too far to the rear. 
 Open the breech and turn gun right handed. If no resistance is 
 encountered in closing, open breech and note whether gauge has 
 been pushed back against spindle. If it has not been pushed all the 
 way back, turn the gun left handed one turn for each 0.1 inch. Con- 
 tinue to try in this manner until the gauge is pushed just against 
 the spindle plate when closing the gun. 
 
 Having adjusted subcaliber gun until the locating gauge is pushed 
 exactly against the spindle plate by closing breech, tighten the thread 
 clamp screw with the clamping wrench to prevent gun from turning. 
 Tlie gun is then ready for firing. 
 
 DIRECTIONS FOR DISMOUNTING. 
 
 Insert loading tray, if one is provided. 
 
 Ease up both clamp screws, insert handspike, lift on same to 
 support the w^eight, and pull the subcaliber gun to the rear and out. 
 
 (13) 
 
14 
 
 If the subcaliber gun sticks in the bore of the large gun, insert 
 the gun extractor rod into and through the bore of the subcaliber 
 gun until the foot on the front end of the rod can be caught against 
 the muzzle face of the subcaliber gun; then slip the gun-extractor 
 rod strap over the rear end of the rod until it comes up against the 
 breech face of the larger gun. Apply the nut and screw up on the 
 nut until the subcaliber gun is loosened, after which remove the gun- 
 extractor rod and proceed to remove the subcaliber gun as if it had 
 not stuck. 
 
 GENERAL DIRECTIONS FOR USE, CARE, AND HANDLING OF ALL 1-POUNDER 
 
 SUBCALIBER GUNS. 
 
 Insert cartridge, close the breech, and fire as with regular ammuni- 
 tion, removing the empty cartridge case after each round with the 
 hand extractor. ^ 
 
 If the case sticks and can not be removed with the limit of extrac- 
 tion given by the hand extractor, use the clip extractor, which is 
 provided for such an emergency. A light rope may be passed through 
 the eye of this extractor, and force exerted by a lever against the 
 face of the breech, if necessary. 
 
 It is best to try locating gauge after one or two rounds, to be 
 sure the gun has not moved forward, and this should be repeated 
 frequently. 
 
 Any fouling of vent in mushroom must be removed with vent 
 cleaner. 
 
 Care should be taken, in assembling and dismounting, and at all 
 times, to prevent the turned surfaces of adapters from coming in 
 contact with any hard substance. If a burr should appear, it must 
 be smoothly filed down before assembling. 
 
 Particular care must be taken, in loading, not to drive the point 
 of the shell against the edge of the chamber of subcaliber gun. 
 
 The clamp screws and adapter hubs should always be kept well 
 oiled. An oil can is provided for this purpose. 
 
 After firing, the gun should be washed out and the bore lubricated 
 with light slushing oil. 
 
 During firing, when necessary, the gun should be w\ashed out and 
 cleaned with oil. 
 
 The chamber and bore of small gun should be lightly oiled when 
 put away. The cleaning sponge is removable from its rod, and 
 should be thoroughly cleaned and dried after use. 
 
 Two forms of locating gauges have been provided, one of which is 
 fitted in the chamber of the 1-pounder subcaliber gun and the other 
 is fitted to the edge of the spindle plate on the front face of the 
 obturator. 
 
15 
 
 STATEMENT AS TO INTERCHANGEABILITY OF 1-POUNDEE SUBCALIBER GUNS. 
 
 1-pounder subcallber guns adapted for — 
 
 When fitted with the proper adapters can 
 also be used in — 
 
 4-iuch Driggs-Schroeder gun. 
 
 6-inch, 1905. 
 
 
 8, 10, 12, £\nd 14 inch guns, all models. 
 
 4.72-inch Armstrong gun. 
 
 6-inch, 1905. 
 
 
 8, 10, 12, and 14 inch guns, all models. 
 
 5-inch gun, model of 1897. 
 
 6-inch, 1905. 
 
 
 8, 10, 12, and 14 inch guns, all models. 
 
 5-inch gun, model of 1900. 
 
 6-inch, 1905. 
 
 
 8, 10, 12, and 14 inch guns, all models. 
 
 6-inch guns, models of 1897 and 1908. 
 
 10, 12, and 14 inch guns, all models. 
 
 6-inch guns, models of 1900 and 1903. 
 
 6-inch, 1905. 
 
 
 8, 10, 12, and 14 inch guns, all models. 
 
 6-inch guns, model of 1905. 
 
 6-inch, 1900 and 1903. 
 
 
 8, 10, 12, and 14 inch guns, all models. 
 
 8, 10, 12, and 14 inch guns, all models. 
 
 6-inch models of 1900, 1903, and 1905. 
 
 Chests for 1-Pounder Subcaliber Guns and Adapters. 
 
 Two models of storage chests are now being manufactured. These 
 are storage chest " B," which contains the 1-pounder subcaliber gun, 
 together with certain tools which are common to various seacoast 
 guns, and storage chest " C," which contains those articles which 
 are different for every ixiodel and, caliber of seacoast gun, such as 
 adapters and certain tools. 
 
 Two types of storage chest " B " are made. One of these is for 
 tools and subcaliber guns for 4-inch Driggs-Schroeder, 4.72-inch 
 Armstrong, or 6-inch Armstrong guns. The other is for tools and 
 subcaliber guns for all other seacoast guns. 
 
 AMMUNITION. 
 
 The amnuinition issued for these guns consists of a steel shell with 
 blank point fuze plug, weight 7,5Q0i!=150 grains, fixed to a cartridge 
 case, the total weight of a complete round being about 1.585 pounds. 
 The use of the point percussion fuze, designed for 1-pounder ammu- 
 nition, has been discontinued. The ammunition is issued packed in 
 wooden boxes, 50 rounds to the box. The primer used in the base 
 of the cartridge case is either an igniting primer or a percussion 
 primer, depending upon the gun in which the subcaliber gun is used. 
 Subcaliber guns mounted in 4-inch Driggs-Schroeder and 4.72 and 6 
 inch Armstrong guns require percussion-primed ammunition. All 
 other guns require igniting-primed ammunition. 
 
DIRECTIONS 
 
 FOB 
 
 USING, MOUNTING, AND DISMOUNTING 2.9HNCH SUBCALIBER 
 GUNS IN THE BORE OF 12-INCH MORTARS, ALL MODELS. 
 
 DIRECTIONS FOR ASSEMBLING. 
 
 Chamber and bore of subcaliber gun and of mortar must be per- 
 fectly clean. 
 
 Remove blank pres§ur,e plugs from mushroom head and put on 
 obturator spindle plate with its two screws, using the securing-screw 
 wrench. Tighten the screw heads upon the plate. 
 
 Insert the loading tray to prevent bruising the adapters on the 
 breech threads. 
 
 Insert subcaliber gun, with adapters, into the chamber of the mor- 
 tar, pushing it smartly forward with the handspike to cause the 
 front adapter to seat firmly in slope of chamber, which it is tapered 
 to fit. 
 
 Tighten clamp-wedge screw in rear adapter to cause the adapter 
 clamp wedge to expand the adapter against walls of chamber, using: 
 the clamping wrench. 
 
 Having made sure that subcaliber gun is as far forward as it can 
 go, remove handspike. Slip locating gauge over obturator spindle 
 plate, leaving a space between guage and spindle plate. Close breech, 
 gontly. If resistance is encountered, the gun is too far to the rear. 
 Open the breech and turn gun right-handed. If no resistance is en- 
 countered in closing, open breech and note whether gauge has been 
 pushed back against spindle. If it has not been pushed all the way 
 back, turn the gun left-handed one turn for each 0.1 inch. 
 
 Continue to try in this manner until the gauge is pushed just 
 against the spindle plate when closing the gun. 
 
 Having adjusted subcaliber gun until the locating gauge is pushed! 
 exactly against spindle plate by closing breech, tighten the thread! 
 clamp screw with clamping wrench to prevent the subcaliber gun 
 from turning. The gun is then ready for firing. 
 103939—17 ^3 (17) 
 
18 
 
 DIRECTIONS FOR USE. 
 
 Insert cartridge, close the breech, and fire as with regular aninm- 
 nition, removing the empty cartridge case after each round with the 
 hand extractor. 
 
 If the case sticks when the limit of extraction given by the hand 
 extractor is reached, use the clip extractor which is provided for such 
 emergency. A light rope may be passed through the eye of this 
 extractor and force exerted by a lever against the face of the lu'oecli, 
 if necessary. 
 
 It is best to try locating gauge after one or two rounds, to be sure 
 gun has not moved forward. 
 
 Am^ foulipg of vent in mushroom must be removed with vent 
 cleaner^ 
 
 DIRECTIONS FOR DISMOUNTING. 
 
 Insert loading tray, if one is provided. 
 
 Ease up both clamp screws, insert handspike, lift on same to 
 support the weight, and pull the subcaliber gun to the rear and out ; 
 if not easily withdrawn, use gun extractor. 
 
 CARE AND HANDLING. 
 
 Care should be taken in assembling and dismounting, and at all 
 times, to prevent the turned surfaces of adapters from coming in 
 contact with any hard substance. If a burr should appear it must 
 be smoothly filed down before assembling. 
 
 Particular care must be taken in loading not to drive the point 
 of the shell against the edge of the chamber of the subcaliber gun. 
 
 The clamp screws and adapter hubs should always be kept well 
 oiled. An oil call is provided for this purpose. 
 
 After firing, the bore of the subcaliber gun should be thoroughly 
 sponged with warm soapsuds and be perfectly dry before the gun 
 IS returned to its chest. The chamber and bore of the gun should be 
 lightly oiled when put away. The cleaning sponge is removable 
 from its rod, and should be thoroughly cleaned and dried after use. 
 
 Two types of 2.95-inch subcaliber gun are in service. The first 
 type is intended for the 12-inch mortar, model of 1886. This can also 
 be used in the 12-inch mortar, modelof 1886-90Mi, 1890, 1890Mi, and 
 1908, when fitted with the 'proper adapters. 
 
 The second type, which is the only one now being made, is in- 
 tended for use in the 12-inch mortar, model 1886-90Mi, 1890, 1890Mi, 
 and 1908. Special adapters are made to fit this to the 12-inch mortar, 
 model of 1912, and to the 12-inch mortar, model of 1886. 
 
INSTRUCTIONS 
 
 FOB 
 
 LlS[iNG THE RESTZINCx AJsD RELOADTSG OUTFIT FOR DRILL 
 PRIMERS IN ASSEMBLIJSG, DISASSEMBLING, CLEANING, RE- 
 SIZING, AND RELOADING THE DRILL PRIMER. 
 
 (Two plates.) 
 
 IMPORTANT NOTE. _ 
 
 The post ordnance officer of each coast artillery post should have supervision 
 of the disassembling, cleaning, resizing, assembling, and reloading of drill 
 primers, and should issue them to the companies as required. He should 
 thoroughly familiarize hiiuself with the contents of this pamphlet and see that 
 ihe men assigned to the work of reloading do it exactly as prescribed within. 
 He should impress upon these, men the importance of following the instructions. 
 The failure to do so has given much difficulty in the past. 
 
 The resizing and reloading outfit for drill primer consists of the 
 following parts: 
 
 1 chest. 
 
 3 assembling tools. 
 
 3 disassembling tools. 
 
 27 disassesmbling tool pins. 
 
 3 reamers. 
 
 3 funnels. ' 
 
 3 chargers. 
 
 1 push pin. 
 
 1 resizing die. 
 
 1 bushing. 
 
 1 maximum gauge for length of wire under button. 
 
 2 cleaning taps for button wire. 
 1 instruction pamphlet. 
 
 1 small primer-inserting press. 
 
 With the exception of the small^ primer-inserting press, the outfit 
 is shown on Plate II. 
 
 THE DRILL PRIMER. 
 
 Plate I. 
 
 The drill primer is used for friction firing in seacoast guns, 5 to 12 
 inch,.incl\isive, for firing salutes, night practice, subcaliber firings, 
 
 (19) 
 
20 
 
 etc., to avoid the expense of using the service combination electric 
 and friction primer for such purposes. 
 
 The components of the drill primer (Plate I) are issued in bulk 
 upon requisition. The components are : 
 
 The body. 
 
 The button wire. 
 
 The serrated wire with friction pellet. 
 
 The end-closing cup.* 
 
 The charge (25 grains of loose rifle powder). 
 A complete description of this primer will be found in Ordnance 
 Pamphlet Form No. 1881. 
 
 TO ASSEMBLE AND LOAD THE PRIMERS. 
 
 The primers will be assembled not more than a few days before 
 they are to be fired. To assemble the primer insert the serrated \Yire 
 with friction pellet in its seat in the body, care being taken that the 
 seat in the body for the friction pellet is clean and free from obstruc- 
 tion. With the left hand insert the assembling tool, slotted end fore- 
 most, and turn, without pressure, until the assembling tool slips over 
 the serrated wire. With the thumb and first finger of the right hand 
 screw a button wire on the threaded rear end of the serrated wire. 
 The maximum gauge for length of wire under button should be used 
 to determine the required distance from the button to the body of 
 the drill primer. 
 
 Do not screw the button wire on too hard. If found tight ^ unscrew 
 the button wire and clean the threads with the cleaning tap for hut- 
 ton wire. If the forward end of the serrated wire should he tioisted 
 off by too hard turning., the body., serrated wire., and button wire are 
 all worthless and must be thrown away, because the primer can not 
 he disassembled. 
 
 Pliers must not be used in assembling. Their use should not be 
 necessary in this operation and may result in deformation of the 
 threaded parts, disintegration of the friction pellet, or twisting off 
 of the serrated wire. 
 
 Still holding the primer in the left hand, place the funnel on the 
 mouth, and with the charger fill the primer with 25 grains of loose 
 rifle powder. With the right hand holding the assembling tool, 
 moisten the linslotted end, insert it in the end-closing cup, and force 
 the end-closing cup into the mouth of the body. The primer is then 
 ready for firing. Should assembled pi^mers be returned without 
 being fired, they will be kept free from moisture until used. 
 
 TO DISASSEMBLE AND CLEAN THE PRIMERS. 
 
 Immediately after the firing for the day has ceased, the . fired 
 drill primers should be turned over to the post ordnance officer, who 
 
21 
 
 will take steps to have them disassembled and cleaned at once. 
 After disassembling thfe serrated wire and button wire with the aid 
 of the assembling tool and forcing out the serrated wire with the 
 disassembling tool the bodies and button wires will be plunged into 
 a hot solution of soda for about fifteen minutes, when the residue 
 can be wiped off. The reamer will then be used to clean residue, 
 from the seats in the body for the friction pellet and obturating 
 cone on the serrated wire. Too much importance can not be at- 
 tached to the necessity of removing all traces of the powder residue, 
 as the residue from black powder quickly attacks the metal of the 
 primer. Do not postpone disassembling the primer and cleaning 
 the bodies and button wires until a later day, as it is only by prompt 
 and thorough cleaning that the bodies can be kept in a serviceable 
 condition. 
 
 TO RESIZE THE BODY. 
 
 Place the bushing in its seat in the primer-inserting press. After 
 inserting the body in the resizing die, place the resizing die (with the 
 base of the body upward) in its seat in the bushing. Turn the lever 
 of the press so as to force the body fully home in the resizing die. 
 Eemove the resizing die and insert the spindle of the push pin in the 
 mouth of body as far as it will enter. Again place the resizing die 
 in its seat in the bushing, with the head of the push pin upward, and 
 by turning the lever of the press force the body out of the resizing 
 die. The body is then in condition for assembling and reloading. 
 
 DIRECTIONS FOR PULLING THE DRILL PRIMER. 
 
 These primers are adjusted in manufacture to require a pull of 
 about 25 pounds to start the wire to the rear, and about 40 to 45 
 pounds to pull the teeth on the serrated wire through the com- 
 pressed friction pellet and explode it. 
 
 The lanyard should he pulled frorrh a position as near the rear of 
 the gun as possible^ since pulling it from the side will cause a variable 
 part of the pull to be absorbed by friction in the firing leaf. A 
 strong, steady pull from one man, with as short a lanyard as possible, 
 should be used. When a long lanyard is used, the slack causes the 
 force to be applied to the primer slowly, and this increases the chances 
 for a misfire. The quicker the pull, the better for firing the primer, 
 but when a man attempts to pull by a jerk he uses his arms only, los- 
 ing the assistance of his body, and the strength of his pull will be less. 
 If a primer can not be discharged by one man, it should be rejected 
 and another used. By using more than one man on the lanyard, 
 there would be danger of injuring the firing mechanism. 
 
» 22 
 
 The primer is so constructed that when a primer is pulled and fails 
 to fire, the primer wire is free, and if pushed forward may cause the 
 friction composition to ignite. Such a primer should at once be dis- 
 assembled by first taking out the brass closing cup and powder and 
 then removing the serrated wire. 
 
 Wak Depaktment. 
 
 Office of the Chief of Ordnance, 
 
 Washington, August 8, WVi. 
 January 18, 1904. 
 Revised January 10, 1907. 
 Revised April 14, 1910. 
 Revised August 8, 1914. 
 FOKM No. 1986. 
 Ed. June 5-17-2,000. 
 
PL/ITEL 
 
 /Pdr. SC/BC/ILfBER gun 
 
 FOR ALL SEACO/iST GUN^ 
 EXCEPT ^D-3^ AND ^.72"A/S/D S'ARMSTROA/G 3C/A/S. 
 
 '0^ ) 11 I 
 
 GUN. 
 
 STOflACe CHEST '*B' 
 
 CLO^VnNG SPON^e. 
 
 SPONGE ROO. 
 
 olZI 
 
 HANDSPIKE.. 
 
 /^Ovli/STINC WRCMCH. 
 
 HAHiy £irn?Acrof?. 
 
 VENT CLCANei?. 
 
 □ 
 
 :> 
 
 OIL CAN. 
 
 CLIP eXTRACTOl?. 
 
 3G-/C-2.J 
 
PL/I TEH. 
 
 / Pd/^, Saa CAL/BER GUN. 
 
 ADAPTED TO 4^ 'DS, AND ^^Z/iA/D 6 'A/fMST/fOA/Q Gl/Af\ 
 
 
 CLEANING 5P0NQE. 
 
 GUKi. 
 
 STORAGE eH£ST"B" 
 
 2C 
 
 a 
 
 SPONGE. ROD. 
 
 GUN t-XTRACTOR, 
 
 ETZbtiz^ 
 
 HANDSPIKE. 
 
 & 
 
 HAND EXTRACTOR. 
 
 CLIP EXTRACTOR, 
 
 a 
 
 OIL CAN. 
 
 iJ6 -/6 -Z4- 
 
PL/ITEJZL 
 
 /ID/IPT£/?S. SrO/?A6£: G//£ST "C"/im 700L6 
 
 FOK 3. /O /lA/D /S-/N. 6(/A/S, MODELS OF /a68 &/89S, 
 y^A/D /^-/M GUNS /ILL MODELS. 
 
 REARAOAPTCA}. 
 
 CENTER SUPPORT. 
 
 FPOhfT ACV^PTEP. 
 
 e 
 
 ^ 
 
 /XOAPTEf? CHECir«.ATC. AO>»PTER CLAMP VVCO^e. 
 
 CLAMP t^CMC eo^VN. 
 
 STORvAGC CHEST "c!* 
 
 0BTUR>rrD9~3PINDL£ PUtTC. 
 
 OkAMPIMG WRCNCH. 
 
 scctfRiN« aoffov. 
 
 SECUKTiNC «Cf7K>V »V^KNCH' 
 
 FRONT AOAFTCR. 
 lO-IN. 1689 ^1890. 
 
 r|?ONT ADAPTER. 
 d-IN. 1809. 
 
 PRIMER PLAME B/tFFLE. 
 
 36-/i- t« 
 
PL/ITEIV. 
 
 /ID/4PTEf?S^ STOP/IGE GPEST 'V''MD TOOLS 
 
 FOR /O /t//D /e-ZM GUA/S, MODEL OF /900. 
 
 4^ 
 
 STOP PtATC. 
 
 /IDAPTCR CLAMP HTCOOC- 
 
 REAR AOAPTen. 
 
 FRONT ADAPTER. 
 
 RCAl? ADA PTCR SHOr. 
 
 AOAPTCR CHECK fl.Ant. 
 
 pRiMcir FLAMc eAPrte. 
 
 OBTURATOR «PIMOkC PLATE . 
 
 OCAMPlN€ MrpcNCK 
 
 SEOURIN« SCREW. 
 
 ^ 
 
 BECURINO ^GRCyy WRCMCH. 
 
 5^-^6 -a.^ 
 
"s 
 
FL/1TE 1/: 
 
 ADAPTERS, 8T0/?AG£ CHEST "G"/JA/D TOOLS 
 
 FOP 5-/N. GUNS. MOD£LS OF /897 <£. /900, 
 AND 6-/N. eUNS, /ILL MODELS. 
 
 EXR4NOINO scf?ew. 
 
 ®) 
 
 MUZZLE euppotn- 
 
 SET SCRCW. 
 
 fRONT AOAPTER. MUZZLE SUPPORT. 
 
 REAR ADAtn-eR 
 lVCOO£. 
 WEOCE. SCREW FOR 6"flUN6. 
 FOR 6" GUNS. 
 
 RCAlf ADAPTER. 
 
 REAR AOAPTER 
 
 Shoe.' 
 
 rRom 
 
 CENTCf? ADA PTCR . 
 
 SUPPORT. 
 
 /ADAPTER SHOE AOi^PTCI? SHOE. 
 
 ADAPTER SHOE KVEDtfE. ff-fQCO. 
 
 IVEOe^ screw; 
 
 (YEOtfC 
 S-1900. 
 
 Rt4ll ADAPTK.R. 
 3'''1900. 
 
 STORAGE. CHCST "C? 
 
 SECVRtNC SCREW, 
 
 OBTURATOR 
 SPINDI-E PLATE. 
 
 DISMOUNTING PIN. 
 
 cr 
 
 
 PfflMCfT FLAME BylFPLC. 
 
 CLAMPiNG SCREW DRIVER. 
 
PMTEW. 
 
 /1D/IPT£/?S, STOP/JGEO/ZEST 'C'MD TOOLS 
 
 FOP ^-/M D^/eSS'SO^^O£D£/?, ^.72 /lA/D ff-ZM 
 AiPA4ST/^ONG Gi/A/S. 
 
 EXBANOtNC 8Crvei¥. 
 CENTER SUPPOfTT. hAVTZLfL Sl/PPOfiT. 
 
 STORAGC CHEST "C. 
 
 DtSMOUNTTIMO PIH. 
 
 rr 
 
 =--UJL-^ 
 
 CLAMPING SCREW DmVe.19. 
 
ja.aS /N. SUBCAL/BER GUA/. 
 
 ADAPTSO TO /Z /fif. MORTAfiS, MOOSLS Of= fSOe, 
 
 /ae6-'90Mt, /aso, /eaoMi, /90s /i/vo/9/2. 
 
 C 
 
 GUN. 
 
 REAR ADAtnEH. FROWT ADAPTER. 
 
 THREAD CLAMP 
 SCREW. 
 ADAPTER 
 CLAMP WEOQkt. 
 
 CLAMP W£OaE 
 SCREW. 
 
 LOCATING GAUGC. 
 
 CLEMMING SPONGE., 
 
 SPONGE ROD. 
 
 3Dr 
 
 GUN EXTRACTOR. 
 
 IPIKE 
 
 HANDSPIKE HEAD. 
 
 ADJUSTING WRBNCH, 
 
 3 
 
 1) 
 
 CLAMPING WRENCH. 
 
 HAND EXTRACTOR 
 
 (® ° q) 
 
 W'ENT CLEANKR. 
 
 3^ 
 
 
 eSr/zicTOR. 3°«;;^5>«r,»«£. - «,«c«chV ' »5Si;5!«c 
 
 5 ETC (/R I WC 5 CREW ~ OILCAN. 
 
 SGREV\/. 
 
 36-y6-zz 
 
OR/LL PR/MER. 
 
 £r/VD CLOS/NG CUP 
 
 EM^ I : 
 
 i^^m^-/mmk 
 
 2Z 
 
 m^2<i^^ 
 
 BODY 
 
 FRICTION PELLET 
 
 W. 
 
 S£/FRAT£0 W/RE 
 
 BUTTON. 
 
 BUlTTOAf W/R£ 
 
 I ^ ' ' ■ I ' I I ' I 
 
 PLATE I 
 
 REV. APRJ0,I914. 36'23-S^ 
 
ZZOJ 
 
 o 
 


f Gaylord Broft. 
 
 i: ^ Makers 
 
 i Syraauae. N Y. 
 
 ' PUT. W. 21. '« 
 
 TL 64J^4