Pattern making; a practical treatise for the pattern maker on wood-working and wood turning, tools and equipment, construction of simple and complicated patterns, modern molding machines and molding practice (1916)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 158
Wholedepth line ^Pitch line Fig. 254. Wood Spur Gear with Teeth Fastened withWood Screws, Filler Pieces Glued between Teeth … Fig. 255. Arms, Hub, and Core Prints of Spur-Gear Pattern found to be in no way inferior to dovetailing, and the saving of laborand time is very great. In this method we have always the advan- 142 PATTERN MAKING
Patternmaking
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