Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 29
ne developed, allthe teeth laid out, a thin sheet of metal cut to the foim thus found, and then wrapped back uponthe cone, we should then have the outlines of the teeth on the larger end of the wheel. But in orderto make the drawings, we need only lay out a single tooth on the development of each…
Mechanical engineering -- Dictionaries
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