Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 111
he outset. The common normal, be- ! when D and F are in contact on the line cause it is the line of action of the press- ure between the teeth, friction neglect- j A B, D d and F b will coincide in length ed, and, for its importance otherwise, is and direction, with d and b superposed, called the… … Though one tooth-curve may be as- form of the side of a tooth of a gear sumed and the other determined, the wheel revolving about B. Then let the theory admits of other solutions ; the curve daf be found for the side of a most common being by aid of describing tooth of A, which, acting by sliding…
Engineering
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