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 857
of the pitch. When the teeth do not engage until they arrive at the line of centres, the faces of the teeth of thepinion may be entirely suppressed, leaving the flanks only, which are alone acted upon by the teeth ofthe wheel. This may be uniformly done, at least when the pitch of the pinion is… … In Fig. 2068, let A be the centre of the wheel, and B the centre of the pinion as before. From thepoint c of contact of the two pitch circles mark off the arcs ca, cb, equal respectively to the pitch of the Einion and wheel; join a B and b a, and bisect this last; from the point of bisection raise…
Mechanical engineering
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