Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 53
Zine of action Fig, 77. … Correct action Fig. 78. 97.—AN IMPROVED PIN TOOTH. The cause of the broken action of the pintooth is the cusp, which is always presentwhen the center of the pin is on the pitchline, and it can be avoided by placing thecenter back, as in Fig. 79, to such a distanceinside the pitch line that the cusp…
Gearing
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