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 239
Fig. 269—A core box for use with the pattern shown in Fig. 268 One half of the core box is provided with projectingbrads and the opposite half has small holes drilled in itto receive these brads, and the two halves are held to-gether in this way. When placed together, the foundry- 238 Shop Practice… … Fig. 269A—A core box hole is pressed full the core box is split apart and thesand lifted out. dJ: Fig. 270—The print left by a cored pattern By carefully studying Fig. 270 and 271, the use of acore box and core prints on the pattern will be under-
Machine-shop practice · Handicraft
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
