lever escapement

American  

noun

Horology.

1. an escapement in which a pivoted lever, made to oscillate by the escape wheel, engages a balance staff and causes it to oscillate.

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Etymology

Origin of lever escapement

First recorded in 1830–40

Example Sentences

There is another feature of the club-tooth lever escapement that next demands our attention which we have never seen discussed.

From Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology by Anonymous

He was a watchmaker who, in the early part of this century, did much to perfect the lever escapement by good work and nice proportion, besides inventing the two pin variety.

From An Analysis of the Lever Escapement by Playtner, H. R.

While the lifting action of the lever escapement corresponds to that of the cylinder, the fork and roller action corresponds to the impulse action in the chronometer and duplex escapements.

From An Analysis of the Lever Escapement by Playtner, H. R.

Let us now make an analysis of the action of a lever escapement.

From Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology by Anonymous

We shall next consider the ratchet-tooth lever escapement with circular pallets and ten degrees of pallet action.

From Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology by Anonymous