Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in constructive and operative machinery and the mechanical arts, being practically a mechanical dictionary, commencing with a rudimentary description of the early known mechanical powers and detailing the various motions, appliances and inventions used in the mechanical arts to the present time, including a chapter on straight line movements, by Gardner D. Hiscox (1914)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 53
e 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; z>, the velocity of the small… … TRANSMISSION OF POWER. 43
Mechanical movements
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