escapement

noun

es·​cape·​ment i-ˈskāp-mənt 

1

a

: a device in a timepiece which controls the motion of the train of wheelwork and through which the energy of the power source is delivered to the pendulum or balance by means of impulses that permit a tooth to escape from a pallet at regular intervals

b

: a ratchet device (such as the spacing mechanism of a typewriter) that permits motion in one direction only in equal steps

2

a

: the act of escaping

b

: a way of escape : vent

Illustration of escapement

• escapement 1a

Examples of escapement in a Sentence

Recent Examples on the Web

Though showing off the works of a watch isn’t a new thing—Breguet famously built pocket watches that exposed the gear train and escapement—the practice really took off during the mechanical watch revival of the 1980s and ’90s. —Blake Buettner, Robb Report, 22 Nov. 2024

Among the movements horological enhancements are two escapement wheels that provide a direct impulse to the balance for improved efficiency, stability and a longer power reserve. —Carol Besler, Robb Report, 23 Oct. 2024

Key components, including the escapement wheel and anchor, are coated in DiamonSil, a combination of silicon and synthetic diamond that improves durability and precision. —Matthew Catellier, Forbes, 21 Oct. 2024

In place of a discrete escapement controlled by an oscillating balance wheel, there is a rotating glide wheel that is electrically braked by magnets controlled using a quartz oscillator. —David Flett, Robb Report, 16 Oct. 2024

Word History

First Known Use

1779, in the meaning defined at sense 1a