Benjamin, Charles Henry, 1856- [from old catalog], Hoffman, James David, 1868- [from old catalog] joint author · New York, H. Holt and company · leaf 43
ation. ing on the outer edge. When a crack is once started rupturefollows almost immediately. When apertures are cut in a 24 MACHINE DESIGN frame either for core-prints or for lightness, the hole or aperturehsould be the symmetrical figure, and not the metal that sur-rounds it, to make the design… … Machine design has been a process of evolution. The earliertypes of machines were built before the general introduction ofcast-iron frames and had frames made of wood or stone, paneled^carved and decorated as in cabinet or architectural designs. FRAMES 25 When cast-iron frames and supports were…
Machine design
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