Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 75
, unlessthe next tooth curve N springs from thesalient point. If a tooth Springs from the salient point,the tooth action will be correct, but mechani-cally imperfect, as the arc of action of twoteeth cannot lap over each other to allow forpractical defects. And then, as two toothcurves cannot… … The salient point Fig, 120. separate at a just as they engage at h, for thereis a sudden change in the velocity ratio.Such combinations are practicable, but inevery way undesirable. 136.—THE ELLIPTIC GEAR. The principal, and almost the only use ofthe irregular gear, is to produce a variationof…
Gearing
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