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Wood pattern-making; the fundamental principles and elementary practice of the art (1906)

Purfield, Horace Traiton · Ypsilanti, Mich., The Scharf tag, label & box co. · leaf 45

An illustration from Wood pattern-making; the fundamental principles and elementary practice of the art, 1906, leaf 45 — Fig. 6. Fig. 7. molten to the solid state. There are always more or lessstrains set up in a casting by the shrinkage or contrac-tion that takes place at that time. As the iron hardensthe crystals seem to arrange themselves in such a man-er that their lines of strength are perpendicular to the…

Patternmaking

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