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De-tached′ es-cape′ment.

The detached escapement was invented by Mudge in the seventeenth century.

Earnshaw's detached escapement has two vibrations of the balance for each impulse, resembling the duplex in this respect. A is the main pallet projecting from the balance-arbor, concentric with which is another small pallet, called the lifting-pallet, which, when the balance is vibrating from A towards B, lifts a very slender spring B, and with it the detent-spring C, so as to set at liberty or unlock the tooth D, the point of which rests on a ruby pin projecting from the detent-spring C, and forming the detent

The point E of the principal pallet having passed the tooth F, the wheel moves forward by the action of the mainspring, while the next tooth G falls upon the ruby pin and is locked. The screw H serves to adjust the position of the detent and the strength of the locking. In the return of the balance, the pallet A passes easily by the detentspring by forcing back the slender spring B.

This is a chronometer escapement.

The term detached is also applied to the ordinary form of lever-escapement with two pallets, which engage the teeth of the scape-wheel, and a fork which engages a pin on the balance-arbor. The term detached, in this case, is to distinguish it from the anchor-escapement, wherein a segment-rack engages a pinion on the balance-arbor. See lever-escapement.

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