Hood, Grant · Kansas City, Mo. : Kansas City Jeweler and Optician · leaf 203
form shown in Fig. 1; here we have double teeth forlocking and a single tooth for impulse. We have twelvelocking teeth (six double ones). Where a wheel of this formis used the balance will receive an impulse only every fourth 195 MODERN METHODS IN HOROLOGY. vibration as when the first tooth passes… … Fig. I. the impulse tooth will drop upon it, and give the balance itsimpulse. The amount of drop is quite an important thing.We should always keep in mind while working on an es-capement of this kind, that if we increase our drop, we mustdecrease our lift or impulse, and if we decrease our drop,…
Clocks and watches
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