Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 19
iven distance insideof the pitch line. The addendum and the dedendum areboth arbitrary distances, but, for conveniencein computation, they are fixed at simplefractions of the unit of pitch that is in use.When the circular pitch is used the ad-dendum is one-third of the circular pitch. When the… … 17
Gearing
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