r duringfrom 20° to 40° of its vibration each way. Lower anglesare as a rule used with large than with small-sized escape- THE MODERN CLOCK. 165 rrtents, but to secure the best result either extreme must beavoided. In the escapement with very slight inclines to thewheel teeth, the first part of the… … Fig. 53. the cylinder, its thickness and the length of the wheel teethare all co-related. The size of the cylinder with relation tothe wheel also varies somewhat with the angle of impulse,a very high angle requiring a slightly larger cylinder thana low one. If a cylinder of average thickness is…
Clocks and watches
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