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 193
f the pattern and flask pins, the 1-inch holecan be bored in the cope plate, and the hole in the stripping platefor the flange c can be carefully sawed with a jig saw or keyholesaw. This hole should be fitted over the pattern by blue-chalkingthe outside of the flange and trimming the… … Fig. 209. Section through Center ot Nowel Mold Machine is bound to swell to some extent, but a small amount of sand gettingbetween pattern and stripping plate will grind out the stock, so therewill be little trouble from this source. flask Connection, The flask pins i are to be made of cast ironor…
Patternmaking
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