Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 819
In a pair of wheels of this construction it is easy to perceive that the contact of the teeth will bearevery instant at a single point, which, as the wheels revolve, will travel from one side to the other, afresh contact always beginning on the first side immediately before the last contact has… … opposite side. The contact, moreover, being always in the plane of the centres of the pair, the actionis reduced to that of rolling; and as there is no sliding motion, there is consequently no rubbing frictionbetween the teeth GEERING. 809 The motion of wheel work of this description is remarkably…
Mechanical engineering
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