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 134
work. . The finished faceplateof an engine lathe, illustrated in Fig. 198, is a good example of suchwork. It will be readily seen that the pattern for this casting couldbe put in the sand and withdrawn from the mold, leaving the sandstanding where the holes are located. The trouble that arises… … Fig. 198. Typical Metal Faceplate irregular and much smaller than those in the pattern. For thesereasons the holes should be cored, as the core sand is firm and betterable to resist the washing action of the flowing metal. Core Prints in Drag. Where a large flat surface is to be givena finish, it…
Patternmaking
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