Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 51
will be inversely as the pitchdiameters; but if the spiral angles are not equal, thenumber of teeth per inch of pitch diameter will vary.In any case the velocity ratio will depend upon thenumber of teeth and their spiral angle, as expressed in the followingproportion: 27, the velocity of the small… … TRANSMISSION OF POWER. 43
Mechanical movements
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