riving the pendulum, thependulum drives the train, through the medium of a pawland ratchet mechanism on the center arbor. The pendu-lum is kept swinging by means of an impulse given everytenth beat by an electro-magnet. This impulse is causedby the weight of the armature as it falls away from… … Fig. 123. Gillette Clock (Pendulum Driven) 378 THE MODERN CLOCK. clock, as the power is obtained from gravity only, bymeans of the falling weight. Referring to the drawings.Figs. 123 and 124, it is seen that each time the pendulumswings the train is pushed one tooth forward. A cam iscarried by the…
Clocks and watches
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