Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 24
tween twoteeth is approaching the pitch point, that is,when the action is approaching, the frictionbetween the two tooth surfaces is greater thanwhen the action is receding. This extra fric-tion is always present, but is most trouble-some when the surfaces are very rough, as oncast teeth, giving… … Hon ofroach Fig. 33. 22 Efficiency. The difference in the friction is probablydue to the difference in the direction of thepressure between the small inequalities towhich all friction is due. When the gear B,Fig. 33, is the driver, the action between theteeth is receding, and the inequalities lift…
Gearing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
