f 0.7 3 
 
 TECHNICAL NOTE number 255 
 
 FOREST PRODUCTS LABORATORY UNITED STATES FOREST SERVICE 
 MADISON 5. WISCONSIN R ^ ,HgB*UA RY~~>52 
 
 ____ DOCUMcNT^ OEPT 
 
 HAM) -OPERATED PORTABLE GLUE SPREADER 
 
 U.S. DEPOSITORY 
 
 A convenient method of applying-g±trer~to long, harrow wood 
 strips more uniformly and faster than by brush is provided by a 
 simple, hand-operated glue spreader developed by D. V. Doyle, 
 engineer of the U. S. Forest Products Laboratory, during the 
 course of research. The spreader was designed so that it can be 
 moved by hand along the upper surface of a wood strip. It will 
 handle material up to k inches in width. The glue reservoir has 
 sufficient capacity to cover about 75 lineal feet of nominally 
 2- inch-wide lumber at a spreading rate of 50 pounds of glue per 
 1,000 square feet of area. The simplicity of the unit facili- 
 tates thorough, easy cleansing after use. 
 
 The compactness and portability of the device make it 
 especially useful for small gluing operations where limitations 
 of space or cost do not permit the use of a stationary, motor- 
 driven spreader. Its construction requires only those skills 
 and facilities ordinarily found in a small workshop. 
 
 As shown in figures 1 and 2, the spreading mechanism con- 
 sists of a cylindrical wood or metal block or roller mounted in 
 a plywood frame. The cylinder is covered with corrugated rubber 
 floor matting and is flanked with a protruding metal disk or 
 flanges. The metal glue reservoir is hung on a bolt so that its 
 bottom edge forms a "doctor" bar with the cylinder and can be 
 adjusted to regulate the flow of glue. Rubber retaining skirts 
 form a seal between the sides of the reservoir and the flanges. 
 
 Since this spreader is the invention of an employee of the 
 Federal government, permission is hereby granted to United States 
 citizens for the free use of the design herewith published. The 
 device is not patented. 
 
METAL 'DOCTOR BAR' ^^— .1 
 
 (BOLT OR SOLDER TO 1 
 
 — 1 CLUE RESERVOIR) 
 
 FINELY CORRUCATEO RUBBER 
 
 FLOOR MATTING BONDED - 
 
 TO CORE 
 
 END VIEW 
 
 FOR A MORE PERMANENT CONSTRUCTION AND 
 FOR CLOSER CONTROL OF THE CLUE SPREAD, A 
 METAL CYLINDER MAY BE SUBSTITUTED FOR THE 
 WOOD CORE 
 
 THE USE OF COPPER AND BRASS IS REC- 
 OMMENDED FOR THE CONSTRUCTION OF THE 
 METAL PARTS 
 
 *M-IHCH PLIABLE GASKET RUBBER MAY BE 
 USED FOR THE RETAINING SKIRT 
 
 ROTATE GLUE RESERVOIR ON BOLT TO REG- 
 ULATE THE FLOW OF GLUE- TIGHTEN i 
 TO LOCK IN DESIRED POSITION 
 
 Figure 1.— Detail drawing of FPL glue spreader. 
 
UNIVERSITY OF FLORIDA 
 
 Figure 2. --Glue spreader in use 
 
 Z M 89U35 F 
 
 HCULTUM . MADISON