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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 38

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 38
anner as to produce a core of the exact shaperequired by the cavity in the casting, togetherwith such projecting parts as will exactly fill the AND FOUNDRY PRACTICE 33 cavities in the sand left by the core prints on thepattern. To illustrate this idea, a stake pocket,such as may be seen on the… … F/> e its thinness it is more apt to spring out of shapethan if it were cast with a core, as shown inFig. 9. Patterns are painted in such a way as to showwhich portions are iron, and the core prints areleft white or painted of a light color. Usuallycolored shellac is used for the black portions…

Patternmaking · Founding

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

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