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2. Anchor escapement - Wikipedia

   en.wikipedia.org/wiki/Anchor_escapement

   The backward motion of the escape wheel during part of the cycle, called recoil, is one of the disadvantages of the anchor escapement.It results in a temporary reversal of the entire wheel train back to the driving weight with each tick of the clock, causing extra wear in the wheel train, excessive wear to the gear teeth, and inaccuracy.

3. Escapement - Wikipedia

   en.wikipedia.org/wiki/Escapement

   Operation is mechanically similar to the verge escapement, and it has two of the verge's disadvantages: (1) The pendulum is constantly being pushed by an escape wheel tooth throughout its cycle, and is never allowed to swing freely, which disturbs its isochronism, and (2) it is a recoil escapement; the anchor pushes the escape wheel backward ...

4. Riefler escapement - Wikipedia

   en.wikipedia.org/wiki/Riefler_escapement

   The Riefler escape wheel and pallets are of a special design. There are actually two escape wheels mounted on the same shaft and two surfaces on each of the two pallet pins. The front locking wheel has forward pointing teeth rather like a dead-beat escapement, and catches on the flat surface of the pallet to lock the wheel.

5. Verge escapement - Wikipedia

   en.wikipedia.org/wiki/Verge_escapement

   The verge escapement consists of a wheel shaped like a crown, called the escape wheel, with sawtooth-shaped teeth protruding axially toward the front, and with its axis oriented horizontally. [13] [36] In front of it is a vertical rod, the verge, with two metal plates, the pallets, that engage the teeth of the escape wheel at opposite sides ...

6. Pin-pallet escapement - Wikipedia

   en.wikipedia.org/wiki/Pin-pallet_escapement

   The pins and part of escape wheel are visible at bottom center. The GIF is slowed down to make the mechanism movement easier to see. A Roskopf , pin-lever , or pin-pallet escapement is an inexpensive, less accurate version of the lever escapement , used in mechanical alarm clocks , kitchen timers , mantel clocks and, until the 1970s, cheap ...

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8. Lever escapement - Wikipedia

   en.wikipedia.org/wiki/Lever_escapement

   At rest one of the escape wheel teeth will be locked against a pallet. As shown in the diagram, the escape wheel rotates clockwise and the entrance tooth is locked in place against the entrance pallet, the lever held in place by the left banking pin. The impulse pin is located within the lever fork and the balance wheel is near its center position.

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