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 (1921)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 198
inches long by I inch,and the length 1 or 2 inches less than the length of the draw board*Make a full-size layout of the motion of the parallel device aa … Fig. 305. Layout for Side Arm of Parallftl Motion Device illustrated in Fig. 305. The radius r and the dimension s must bethe same. Side Arms, From points a, e, and q, project vertical linesaj and qb. Make all straight lines with a knife point. With /for a center, scribe arc blop with radius Jc,…
Patternmaking
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