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 178
n the requiredwidth, being filed out in thecasting. A pattern for the drawpieces I and Z is to be made as shown in Figs. 274, 277, and 278;the radii c and d being shown in Fig. 272. The thickness is u, andan enlargement at one end is provided to serve as a handle. Twocastings from this pattern are… … Fig. 273. Draw Pieces for Core Box 160 PATTERN MAKING
Patternmaking
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