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 43
istance a m is always less than a n, and the longer the arcs the greater this difference, which isequal to that between n r and m b; and that as d always lies beyond r, b p will always be greaterthan this difference. Now, if, as in Fig. 2144, we assume a c as the axis of a tooth of B B, to workwith… … 2145.
Mechanical engineering -- Dictionaries
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