escapement$25915$ - определение. Что такое escapement$25915$
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Что (кто) такое escapement$25915$ - определение

TYPE OF MECHANISM USED IN PENDULUM CLOCKS
Recoil escapement; Deadbeat escapement; Graham escapement
  • The anchor and escape wheel of a late 19th-century clock. The plate that normally holds the front end of the pinions has been removed for clarity. The pendulum is behind the back plate.
  • Anchor escapement.
  • Animation showing operation of an anchor escapement
  • Deadbeat escapement, showing: (a) escape wheel, (b) pallets with red lines showing the concentric locking faces, (c) crutch.
  • Pendulum and anchor escapement.<br>''(a)'' pendulum rod<br>''(b)'' pendulum bob<br>''(c)'' rate adjustment nut<br>''(d)'' suspension spring<br>''(e)'' crutch<br>''(f)'' fork<br>''(g)'' escape wheel<br>''(h)'' anchor

Verge escapement         
  • The second verge pendulum clock built by [[Christiaan Huygens]], inventor of the pendulum clock, 1673. Huygens claimed an accuracy of 10 seconds per day. In a pendulum clock, the verge escapement is turned 90 degrees so that the crown wheel faces up (top).
  •  isbn = 1-85285-451-0 }}</ref> of a verge escapement, in [[Giovanni de Dondi]]'s [[astronomical clock]], the Astrarium, built 1364, Padua, Italy.  This had a balance wheel (crown shape at top) instead of a foliot.  The escapement is just below it.  From his 1364 clock treatise, ''Il Tractatus Astrarii''.
  • Modern reproduction of an early verge and foliot clock.  The pointed-tooth verge wheel is visible, with the wooden foliot rod and suspended weight above it.
COMPONENT OF A WEIGHT-DRIVEN CLOCK
Crown-wheel-verge escapement; Verge-and-foliot escapement; Verge and foliot; Verge escape; Foliot balance; Foliot (timepiece)
The verge (or crown wheel) escapement is the earliest known type of mechanical escapement, the mechanism in a mechanical clock that controls its rate by allowing the gear train to advance at regular intervals or 'ticks'. Its origin is unknown.
Escapement         
MECHANISM IN CLOCKS
Cylinder escapement; Escapements; Spring detent escapement; Escapement gear; Detent escapement; Liquid-driven escapement; Mechanical escapement; Mechanical escapements; Cross beat escapement; Crossbeat escapement; Cross-beat escapement; Pinwheel escapement; Duplex escapement; Gravity escapement; Constant escapement; Electromechanical escapement; Electromechanical escapements; Hipp clock; Escapement mechanism; Kommahemmung
·noun Way of escape; vent.
II. Escapement ·noun The act of escaping; escape.
III. Escapement ·noun 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.
Escapement         
MECHANISM IN CLOCKS
Cylinder escapement; Escapements; Spring detent escapement; Escapement gear; Detent escapement; Liquid-driven escapement; Mechanical escapement; Mechanical escapements; Cross beat escapement; Crossbeat escapement; Cross-beat escapement; Pinwheel escapement; Duplex escapement; Gravity escapement; Constant escapement; Electromechanical escapement; Electromechanical escapements; Hipp clock; Escapement mechanism; Kommahemmung
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 hands. The impulse action transfers energy to the clock's timekeeping element (usually a pendulum or balance wheel) to replace the energy lost to friction during its cycle and keep the timekeeper oscillating.

Википедия

Anchor escapement

In horology, the anchor escapement is a type of escapement used in pendulum clocks. The escapement is a mechanism in a mechanical clock that maintains the swing of the pendulum by giving it a small push each swing, and allows the clock's wheels to advance a fixed amount with each swing, moving the clock's hands forward. The anchor escapement was so named because one of its principal parts is shaped vaguely like a ship's anchor.

The anchor escapement was probably invented by British scientist Robert Hooke around 1657, although some references credit clockmaker William Clement, who popularized the anchor in his invention of the longcase or grandfather clock around 1680. When Clement's clock appeared Hooke claimed the invention of the escapement, saying that he had shown a clock with the same escapement to the Royal Society soon after the great fire of 1666. The oldest known anchor clock is Wadham College Clock, a tower clock built at Wadham College, Oxford, in 1670, probably by clockmaker Joseph Knibb. The anchor became the standard escapement used in almost all pendulum clocks.

A more accurate variation without recoil called the deadbeat escapement was invented by Richard Towneley around 1675 and introduced by British clockmaker George Graham around 1715. This gradually superseded the ordinary anchor escapement and is used in most modern pendulum clocks.