Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 69
ere are numerous patents relatingto it. The worm gear to be bobbed is fixedupon the same spindle with a master worm-wheel. A driving worm runs in the masterwheel, and it is connected by a train of gear 66 Hobbing Machines. ing with a hob that is so mounted on acarriage that it can be fed towards… … Tiq. 106Spiral and Spur Gear, 125.—THE CONJUGATOR. This is a machine for cutting spur or spiralgears by means of a hob, and its principle isan extension of that of the Whitworth wormgear hobbing machine. If, when the hob in the Whitworth ma- Conjugator, Elevation H Fig.104.
Gearing
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