Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 8
ION As the tooth curves od and OD, Fig. 5,work together, the point of contact willtravel along a line Op W called the line ofaction. There is a definite relation between theodontoid and the line of action, so that, ifeither one is given, the other is fixed. Ifthe odontoid OD is given, with its… … 14.—INTERCHANGEABLE ODONTOIDS. This feature leads at once to the broadand useful fact that all odontoids, on pitchlines of all sizes, that are formed from thesame line of action, will work together inter-changeably, any one working with any other. Therefore, to produce an interchangeableset of…
Gearing
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