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. 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- … Fig. 271A—Several ordinary patterns without core prints stood. The pattern Avith the core prints leaves an im-print in the sand similar to that shown at Fig. 270, and Pattern Making 239 it will also be understood that the impression left in thesand by the core prints is superfluous. Into these…
Machine-shop practice · Handicraft
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
