A handbook on the teeth of gears, their curves, properties, and practical construction (1890)
Grant, George B. (George Barnard), 1849-1917 · Lexington, Mass., Lexington Gear Works · leaf 52
The Cycloid ways a normal to the curve, and therefore, todraw a normal to any given point P, strikea circle through the point having a diameter Fig. 32Cycloidal Teeth … theory, because its roller, the circle, is thesimplest of all curves. But, in this place,the former theory will not be used furtherthan to define the nature of the cycloid,which is the generating odontoid that formsthe system. The Cycloid.—If a circle A. Fig. 31. is?rolled on the straight line OF,…
Gearing
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