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 127
ris Tj 122 PATTERN MAKING The top b is turned up, as shown, and the par-titions d d d glued to it. The cores c~c. Fig. 80, … make the vent holes c c c, Fig. 75, which let thesteam out into the bell of the whistle. (_^ 5*lerp
Patternmaking · Founding
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