Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 16
Conchoid of Nico-medes. If we choose a parabola for the rack tooth,as in Fig. 24, the parabolic system will beformed with its peculiar hour glass lineof action. Only three of these tooth systems are inactual use, the involute and the cycloidal forspur gears, and the octoid for bevel gearsonly, and… … iParabolic Fig. 24. The segmental system would be superiorto the cycloidal, and in many cases to the in-volute; but as there is already one system toomany, we will not attempt to add another. 32.—THE ROLLED CURVE THEORY. If any curve B, Fig. 25, is rolled on anypitch curve p I, a. point p in the…
Gearing
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