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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 39

An illustration from 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, leaf 39
lor. Usuallycolored shellac is used for the black portions anduncolored for the core prints. By this means 34 PATTERN MAKING the moulder can tell at a glance the moment hetakes up the pattern just how to make the cast-ing. Recently, through the carelessness or ig-norance of a pattern maker, over… … jF\y 9 been left light. In moulding patterns of the classshown in Figs. 9 and 10, the process is much thesame as has already been described. The lugsa a, Fig. 10, are made removable, andwhen removed the pattern. Fig. 9, is laid flat onthe follow board. The drag is then placed inposition and rammed…

Patternmaking · Founding

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