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 73
to the newsurface, after which the cope is placed in position and rammed up. When the cope anddrag have been separated,the upper half A of thepattern is taken out, andthe cope is returned toits place on the drag. Thewhole flask is now turnedover, and the drag liftedoff the cope, when thering of… … Z&ni r^ r^ 125. Loose-Piece Pattern Fig. 126. Loose Pieces in Mold Many other examples might be given, as the case of the commontwo-flange pulley, which, when small, is often molded in this way. PATTERN MAKING 59 LoosePiece Patterns, It is frequently the case that parts ofthe pattern will…
Patternmaking
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