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
2145. … which are here made to correspond with Fig. 2142. The tooth b z, for the arc of receding action,has however at the point b a radius equal to b p. Since, when the teeth are turned in the lathe, thesmallest must be used, it follows that under these conditions the curve a x must be employed…
Mechanical engineering -- Dictionaries
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