Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 60
uarter totwo-thirds of the power received. When the screw has a single thread, the velocity ratio is simply the number of teethin the gear, and if there are two or threethreads it must be modified accordingly. The spiral worm is adjustable in its gearboth laterally and longitudinally, so that… … spiral TForwi Gear and Worm.Fig. 91. Fig. 92 Worm Gears 112.—EFFICIENCY OF SPIKAL AND WORM GEARING. Unless the shafts are parallel the teeth of apair of spiral gears are moving in differentdirections, and therefore they cannot passeach other -without sliding on each other anamount that increases…
Gearing
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