Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 101
t itlong passed for the truth, not only with itsinventor, the celebrated Professor Willis, butwith many other prominent writers, untilshown by MacCord to be wrong. It servesto illustrate the confusion in which the wholesubject has been and now is. The tooth surfaces which Willis supposedto be… … Cycloidal tooth CurvesPig. 157. purpose, and are, therefore, a better proof ofthe intersection of the surfaces than solidteeth would be. The cycloidal tooth is examined at consid-erable length, and the instrumental proof ofits failure is given in the American Machin-ist for September 5th, 1889.…
Gearing
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