Fig. 73. Lantern pinion showing pitch circle. … Fig. 74. Generating epicycloid curve for lantern pinion above; com-pare with curve for cut pinion of same size pitch circle, page 206. 240 THE MODERN CLOCK. are more pointed than in the latter. There also is a fartherdifference; as was explained in detail when treating of cutpinions, the curve of…
Clocks and watches
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