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 72
Fig. 121. Pulley Split Pattern … Fig. 122. Pjilley Mold Coped-Out for Ring usual way. After the drag is turned over, the sand is cut awayand removed to the center of the rim edge, as shown in Fig. 122.The cut is carefully smoothed, and parting sand applied to the 58 PATTERN MAKING cut surface. The part a of the pattern is placed…
Patternmaking
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