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 5
deal only with the main principles andprominent points. It is not a treatise, it is a hand-book that does notpretend to cover the whole ground, and its principal object is to presentthe new odontographs, which I believe to be superior to those heretoforein use for the purpose of designing the teeth… … The perfect gear wheel is the friction wheel, communicatinga smooth, uniform, rolling motion, by means of the frictionalicontact of its surface. It is, in fact, a gear wheel with agreat many very small, weak, nnd irregular teeth.The whole aim and object of the science of the teeth of gearfic.2.…
Gearing
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