Hood, Grant · Kansas City, Mo. : Kansas City Jeweler and Optician · leaf 215
orted on an arbor that is pivoted at eachend, and the tension is given by a small hair-spring on thearbor. The tension can be increased or diminished by turn-ing the collett on the arbor. This form is used in pocketchronometers. The spring detent is shown in Fig. 7. Thedetent and spring are made of… … Fig. 5- projecting above the top of the detent. A better idea of theappearance of the top the detent and gold spring may be hadfrom the drawing. Fig. 8. The action of the escapement mayalso be better understobd from this drawing. It consists ofthe following importnat parts: The escape wheel A, the…
Clocks and watches
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