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Escapement
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An escapement is a mechanical linkage in mechanical watches and clocks that gives impulses to the timekeeping element and periodically releases the gear train to move forward, advancing the clock's ha
Original drawing (c. 1637) of Galileo's pendulum clock and escapement
Original drawing (c. 1637) of Galileo's pendulum clock and escapement
Pin wheel escapement of South Mymms tower clock
Pin wheel escapement of South Mymms tower clock
First detent escapement by Pierre Le Roy 1748
First detent escapement by Pierre Le Roy 1748
Earnshaw's detent escapement, used widely in chronometers
Earnshaw's detent escapement, used widely in chronometers
Lever escapement
Videos
The lever escapement, invented by the English clockmaker Thomas Mudge in 1754, is a type of escapement that is used in almost all mechanical watches, as well as small mechanical non-pendulum clocks, a
Escapement
…oscillator is isochronous; its period is independent of its drive force and amplitude of swing. The best escapements such as the deadbeat and the lever approximate this condition. Since the force of the escapement on the oscillator is the source of error in precision timepieces, in general the more the…
A lever escapement in a mechanical watch. The largest brass circle is the balance wheel. The escape wheel is the silver gear above and to the right of
A lever escapement in a mechanical watch. The largest brass circle is the balance wheel. The escape wheel is the silver gear above and to the right of it whose bearing is surrounded by decorative engraving. Most of the lever itself is hidden, but both pallets are visible.