Hood, Grant · Kansas City, Mo. : Kansas City Jeweler and Optician · leaf 53
. 80+21/2=821/2- .2 (diametrical p.)X82%=16.5 m-m full diameter ofwheel. 49 MODERN METHODS IN HOROLOGY. To find tlie pinion multiply the diametrical pitch, by theleaves+11/4. 10+11/4=111/4. .2 (diametrical p.) Xlli/4=2.25 m-m full diameter ofpinion. In actual practice, we obtain the same results… … Figure g. pinion is faulty, we can tell very quickly which is of impropersize; with our depthing tool we find the center distance to be8.5 m-m. The wheel has 75 teeth and the pinion 10 leaves. We first double the center distance. 8.5 m-mX2=17.0 (Twice B C). 75+10^85 (sum of teeth and leaves).…
Clocks and watches
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