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 141
Fig. 217 Screw CenterLathe Chuck Fig. 21S. Appearance of Pattern of Lathe Chuck the long core print and balanced core. The casting must be counter-cored ; that is, the cored opening must be enlarged at the forwardend, adding to the size and weight of that end of the core, which, aswill be seen, has… … Fig. 219. Core Box for Lathe Chuck Pattern in Fig. 218, and the core print must have a length at least twice asgreat as the depth of the hole in the chuck. The core box is shownin Fig, 219. Deep Flanges. When pipes or cylinders are of moderate size,with deep flanges for bolting together, Fig. 220,…
Patternmaking
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