Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 45
96. TWO SPEED PULLEYS AND BELTS. —Two pair of tight and loose pulleys on lowershaft, unequal broad tight pulleys on upper shaft.By crossing the belt from one of the pair a quickreturn speed may be obtained. Much used ontapping-machines and planers. … 97. PULLEYS, COMBINED WITH A DIF-FERENTIAL GEAR for two speeds, and stop-beltshown on loose pulley. Middle pulley on lower-shaft is fast to shaft, and has a bevel gear fast to itshub. Pulley on the right is loose on shaft and car-ries, transversely, another bevel gear. A third bevelgear runs loose…
Mechanical movements
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