Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 335
1322. EXPANDING PULLEY or wheel.The rim sections screw into a central hub. 1323. VARIABLE SPEED DE-VICE.—An internal driving-cone pul-ley, with a smaller cone pulley rollingon its internal surface on a shaftparallel with the driving shaft, butdrawn eccentric to it for higher speedby an inclined… … Two discs drive the speedshaft, between which andthe driving disc are tworollers pivoted to trans-verse spindles. The rol-lers are kept to their slow-speed position between thediscs by springs. A con-necting rod draws the rol-lers toward the high-speedposition. Friction press-ure on the rollers is…
Mechanical movements
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