Shop practice for home mechanics, use of tools, shop processes, construction of small machines. Contains a chapter also on theoretical mechanics and on miscellaneous information relative to shop work (1920)
Yates, Raymond F. (Raymond Francis), 1895- · New York, N. W. Henley Pub. Co. · leaf 231
c. Briefly stated, this is the processby Avhich patterns are used in producing metal castings. Before going farther into the production of Avoodenpatterns, it would be well to give the reader a better ideaof how a pattern is used, that is, just hoAV the impression 229 230 ^^hop Practice for Home… … Fig. 259—A lathe face plate to be cast shoA\Ti in Fig. 259 is to be cast. The pattern is firstplaced face down upon what is knoMTi as a mouldingboard. This is shoA\ai at Fig. 260. With the pattern inthis position, what is known as a drag is placed over it asillustrated in Fig. 261. A drag is…
Machine-shop practice · Handicraft
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