A handbook on the teeth of gears, their curves, properties, and practical construction (1887)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 45
Truncated teeth To avoid this oblique action and at the sametime allow the use of gears of few teeth, it iscustomary to truncate or cut off the apex ofthe curve, as shown by Fig. 11, hyaline,called the addendum line, at an arbitrary dis-tance from the pitch line. The sides of the teelh are then…
Gearing
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