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Watch and clock escapements; (1904)

Philadelphia, The Keystone · leaf 26

An illustration from Watch and clock escapements;, 1904, leaf 26 — as it rests on the pallet A. Now, if we move thispallet through an angular motion of one and one-half degrees onthe center £■ (which also represents the center of the pallet staff),the tooth B is disengaged from the locking face and commences toslide along the impulse face of the pallet and drops,… … Fig. 16 ten-degree angular motion of the pallets. If we carefully study thedrawing, we will see the pallet has only to move through eight■degrees of angular motion of the pallet staff for the tooth to escape,because the tooth certainly must be disengaged when the inner angleof the pallet reaches…

Clocks and watches

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