Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 232
t as follows: a light springY Y is fastened to the detent, projecting a little beyondit, and it is this spring, and not the detent itself, thatthe pin P2 touches : on the return of Po it simply liftsthe spring away from the detent and passes it, whereas CHAP. XIII.] THE CLOCK AND CHRONOMETER. 209… … Fig. 99. —Chronometer Escapement. is irregular, since when it is fully wound up it exercisesgreater force than when nearly down. In order to com-
Astronomy · Telescopes
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