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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 165

An illustration from 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, leaf 165
n the center lines for the toothfaces after spacing on the blocks, it will be readily seen that theordinary try-square cannot be used as in the case of the spur gears.A temporary square or centrolinead may be made for this purposeas follows: Take a piece of hard wood about 6 inches long, 3§ inches… … Fig. 263. Part of Arm Pattern forMiter Gear PATTERN MAKING 149 and at right angles to the edge a. Lay the edge b of A againstanother board B, of the same thickness, and continue the line c onthis board, as shown by the dotted line. With the dividers seton the extended line c on the board B, and…

Patternmaking

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