Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 81
ters for approxi-mate circular arcs, preferably by the methodof (140), and then consider the gear as madeup of four circular toothed segments. It isthen necessary to construct but two toothcurves, one for the major and one for theminor segment, and the flanks will be radiiof the circular arcs. The… … Cycloidal elliptic teeth* Fig. 130. 144.—CYCLOIDAL ELLIPTIC TEETH. The cycloidal tooth is drawn, exactly asupon a circular pitch line, by a tracing pointin a circle that is rolled on both sides of thepitch line. The line of action is not a circle,and it is not the same curve for all the teeth. That…
Gearing
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