Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 55
cli cylin-der is always upon the line of centers, thegears will always be in action whetherthere are full teeth or not, and they willwork with theoretical accuracy if they arereduced to edges in the pitch cylinder, as inFig. 85. The friction of the edge tooth is theoret-ically nothing, as there is… … iUdge teetli If the edges are thick the action will bestronger, but there will still be but one pointof contact. 101.—INVOLUTE TWISTED TEETH. When the form of the tooth is the invo-lute, and the twist is such that some part ofit on the pitch cylinder always crosses theline of centers, the teeth…
Gearing
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