Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 72
sections are mounted upontheir foci, they will roll together. Their free foci will revolve at a fixed dis-tance from each other, and may be connectedby a link. The line of the free foci will in-tersect the line of the fixed foci at the pointof contact of the pitch lines. Fig. 112 shows a pair of…
Gearing
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