Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 48
a pulley to or from the centre of the faceof a disc wheel. Leather or rubber facing for wheeland pulley makes best working condition. III. VARIABLE SPEED GEAR forsewing-machines, Wrights model.The upper shaft is the driver, the lowershaft carrying the band pulley, swivelsby the foot for variable… … 114. GROOVED FRICTION GEARING.—The I^ loss of power by friction increases with the size anddepth of the grooves. Friction increases inversely as theangles of the grooves. 115. VARIABLE MOTION to a shaft in lineby curved-faced discs, with a swinging pulleypivoted central to the curves on the face of…
Mechanical movements
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