Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 69
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. … Plan Fig. 105. chine has reached the full depth of the tooth,it receives a new motion in the directionof the tangent to its pitch spiral, it willcontinue the tooth to the edge of ihe gear,and form the plain spiral gear of Fig. 91. Fig. 104 is an elevation of the machine, andFig. 105 is a plan. The…
Gearing
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