. Time and its measurement . hor Escapement 28 gives the general .American form ofthe anchor which is made by bend- 29—Dead Beat Escapement pallets are straight. It is, therefore,inferior to Fig. 27 where the actingsurfaces are curved, since these curvesgive an easier recoil. This recoil isthe slight motion backzvards which wheel makes at each tick. Thedead beat escapement is shown inFig. 29, and is used in clocks of a highgrade, generally with a seconds pendu-hmi. It has no recoil as you can easilysee that the surfaces O O on which theteeth fall, are portions of a circleaniund the
. Time and its measurement . hor Escapement 28 gives the general .American form ofthe anchor which is made by bend- 29—Dead Beat Escapement pallets are straight. It is, therefore,inferior to Fig. 27 where the actingsurfaces are curved, since these curvesgive an easier recoil. This recoil isthe slight motion backzvards which wheel makes at each tick. Thedead beat escapement is shown inFig. 29, and is used in clocks of a highgrade, generally with a seconds pendu-hmi. It has no recoil as you can easilysee that the surfaces O O on which theteeth fall, are portions of a circleaniund the center P. The beveled endsof these pallets are called the impulsesurfaces, and a tooth is just giving thelittle push on the right-hand pallet. Itis found in good railroad clocks, watch-makers regulators and in many astro-nomical clocks. These terms aremerch- comparative, a regulator be-ing a good clock and an astronom-ical, an extra good one. Figure 30gives the movement of a remontoirclock in which the dead beat shown isus
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Keywords: ., boo, bookcentury1900, bookdecade1900, booksubjectclocksandwatches
