Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 10
ction ^ on a second-ary line of action, when the secondary pointof intersection b has reached the pitch point. Therefore there will generally be not onlythe primary line of action 0 q M or 0 q M,but also a secondary line 0 w Tot 0 w Y. The secondary line of action must have thesame property as the… … SecondaryactiC* When it so happens that both primary andsecondary lines coincide, we shall havedouble contact. Two points of contact willexist at the same time, one on the primaryand the other on the secondary line of action. The secondary lines of action cannot bemade to coincide when the contact…
Gearing
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