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 238
er willrealize that a pattern made to the shape of the cjdindershown would be useless in forming a mould, owing to thefact that the hole in the center of it would interfere withdrawing it from the sand. Tiie sand when packed in thecenter of the pattern Avould be jiulled out Avith the pat- Pattern… … Fig. 268—Example of a cored pattern, showing the core prints at the ends end are knoAvn as core prints, and mth such a pattern itis necessary to use a core box. This core box is noth-ing more or less than two blocks of wood, which, whenplaced together, will have a hole in their center a…
Machine-shop practice · Handicraft
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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