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recoil escapement

The recoil escapement most commonly found in pendulum clocks, first used in the last quarter of the 17th century. In an anchor escapement from a 19th-century bracket clock, the escape wheel rotates clockwise and gives impulse to the entry pallet. The pendulum is moving to the left. The tooth will leave the end of the entry pallet, and a tooth will drop on to the exit pallet. The pendulum will still be moving to the left and the exit pallet will drive the escape wheel backwards. This constitutes the recoil. When the pendulum's swing to the left is complete, the exit pallet will receive impulse from the escape wheel until the tooth leaves the end of this pallet; then the next tooth will drop on to the entry pallet while the pendulum is still swinging to the right. This will again reverse the motion of the escape wheel until the pendulum's swing to the right is completed. The cycle is then repeated. The inverted-anchor escapement is a form found in American and German clocks; its action is as described above. The anchor is bent up from strip steel and is often mounted on an adjustable pillar on the dial plate of the clock. The pendulum crutch is riveted directly on the anchor.

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  • Part of Speech: noun
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  • Industry/Domain: Chronometry
  • Category: Clock
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