Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 74
Composite piteJi linesFig, 118. … Brolcen pitch lines Fig, 119. 134.—TEETH OF NON-CLRCULAR PITCH LINES. The action of the teeth of non-circularpitch lines does not, at first sight, appear tofollow the laws pertaining to circular lines,but there is really very little difference. If we consider the two pitch lines to befree, and to…
Gearing
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