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 845
e circumference of the pitch circles, and circles drawnwithin these last. Figs. 2050 and 2051 illustrate the process. The arcs B and D, drawn with theradii A B and C D, are those of the face and flank of the wheel tooth; and the arcs F and H, drawnwith the radii E F and Q H, those of the… … The preceding is a very common mode of obtaining the curves of the teeth of a pair of wheels whichire to geer together; but it is faulty, in as far as it gives a form of teeth smaller at the root than at thepitch circles, and also in the circumstance that a pair of wheels set off with templets…
Mechanical engineering
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