Pattern making and foundry practice; a plain statement of the methods of wood pattern making, as practiced in modern pattern shops, with complete instructions for sweep work and notes on foundry practice, together with numerous drawings taken from actual patterns .. (1905)
Hand, L. H. (Louis Henry), b. 1854 · Chicago, F. J. Drake & co. · leaf 31
of nails or made with other projections in order toprevent the sand falling out. By this means a smoothcasting on the outer surface is obtained, as the metal,being heavier than the dross or other foreign substances, 26 PATTERN MAKING this case the pattern, which is assumed to behollow or of cup… … Tig ^<^ro55 5€ction through cup settles to the bottom of the mould and shows a perfectlysmooth surface, while the imperfections float to the topor inside of the sheet. In small shops where repair workis done, the ingenuity of the flask maker is often taxedto devise means for making flasks…
Patternmaking · Founding
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