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 181
itted by the metal-pattern 162 PATTERN MAKING maker. In ramming the core, the sides are clamped together andplaced on the bottom. Core sand is rammed to the underside of the lower draw piece,and is then struck offwith the strike shown inFig. 277. Inserting thedraw piece, the ramminggoes on and the… … Fig. 282.
Patternmaking
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