escapement
Noun
Meaning
The act of escaping; escape.
Way of escape; vent.
The contrivance in a timepiece which connects the train of wheel work with the pendulum or balance, giving to the latter the impulse by which it is kept in vibration; -- so called because it allows a tooth to escape from a pallet at each vibration.
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Anchor escapement Anchor escapement In 1655, according to his autobiographical notes, Hooke began to acquaint himself with astronomy, through the good offices of John Ward.
Barnett, ibid, p.37 In the 11th century, Chinese inventors and engineers invented the first mechanical clocks driven by an escapement mechanism.
As the clock was an attempt to make a seagoing version of his wooden pendulum clocks, which performed exceptionally well, he used wooden wheels, roller pinions and a version of the 'grasshopper' escapement.
However, the action of the frictional rest escapement enables the balance to have a large arc.
If they are not, the pendulum swings more to one side than the other, upsetting the symmetrical operation of the escapement.
It has a novel type of 'vertical' escapement, which is often incorrectly associated with the 'verge' escapement, which it superficially resembles.