Methods of machine shop work : for apprentices and students in technical and trade schools (1914)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York : McGraw-Hill · leaf 271
form system which is neitherinvolute nor epicycloidal. This system appears in all generatedbevel gears, there being no spur gear tooth form analogous to it. The starting point of the system is the straight-sided crowngear tooth which determines the outlines of all gears cut by it.It so happens that… … Fir.. 2()2.—The octoid crowntooth. Fig. 263.—The spherical involutecrown cear tooth. ing construction, its center of curvature goes off to infinity. In acrown gear, however, the center of curvature does not go off toinfinity, the curve being that described by a point a of Fig. 263in the meridian…
Machine-shop practice
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