Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 73
Xogarithtnic pitch lines Fig. 115. … Ihternal TogaritTimiopitchHines Fig. 116. 133.—COMPOSITE PITCH LINES. Instead of drawing a curve at random,and finding the mate to run with it, Fig.108, the complete pitch line may be builtup of a number of curves, of which theproperties are known. Thus, Fig. 117 shows composite gears,consisting of…
Gearing
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