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 121
ng more than theother side, the rapping plate should be located away from the centerof gravity toward this side of the pattern so that in drawing the liftwill be nearly over the resultant center of resistance. For medium-sized patterns, two rapping plates should be provided so that thepattern can… … Fig. 183. Rapping Plate and PATTERN MAKING 105 Standard Core Prints. Economy in Use. While standarddimensions of the cylindrical core prints are not universally used,many large corporations operating pattern shops and foundrieshave adopted a standard, and the economy of this practice…
Patternmaking
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