Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 833
ed to the pen-dulum, since it is convenient to detach the latter, when the clock is to bemoved from one place to another; but it is so connected with it, that, as thependulum swings from side to side, the two ends of the crutch move up :. ; • i aud down. The position of the crutch shown in the… … WATCHMAKING. 827 A. F, the end B of tlie crutcli would sink between tlie teetli of tlie sciipe-w heel, whilst the end C wouldhe raised quite clear of them. The scape-wheel is driven by its pinion in the direction of the arrows ;but its motion suffers interruption by the alternate lockinfj and…
Mechanical engineering · Mechanics · Engineering
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