Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 74
Composite pitch linesFig, 117, points, breaks, and interniptions of the continuity of the curve, for there must bedefective tooth action at such points. Thecurves should run smoothly into each otherwith gradual changes of curvature. … Composite piteJi linesFig, 118.
Gearing
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