A handbook on the teeth of gears, their curves, properties, and practical construction (1887)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 6
tside of the pitch circle,p, a fixed \ tracing point, a, in its edge, will trace • out the dotted line called an epicycloid,I and a small part of this curve near the • pitch line, usually one sixth of its fullJii height,forms the face of the tooth. s^y Similarly, if a small circle,B, be… … #
Gearing
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