Torsion pendulum clock

Anniversary clockclock springKundotorsion pendulumtorsion pendulum clocks
For other use, see Kundo (disambiguation)'' A torsion pendulum clock, more commonly known as an anniversary clock or 400-day clock, is a mechanical clock which keeps time with a mechanism called a torsion pendulum.wikipedia
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Torsion spring

torsion balancetorsion pendulumtorsion coefficient
A torsion pendulum clock, more commonly known as an anniversary clock or 400-day clock, is a mechanical clock which keeps time with a mechanism called a torsion pendulum.

Clock

timepiecemechanical clockanalog clock
A torsion pendulum clock, more commonly known as an anniversary clock or 400-day clock, is a mechanical clock which keeps time with a mechanism called a torsion pendulum.

Atmos clock

Atmos
The Atmos clock, made by Jaeger Le Coultre, is a type of torsion clock which doesn't need to be wound or powered at all.
Atmos is the brand name of a mechanical torsion pendulum clock manufactured by Jaeger-LeCoultre in Switzerland which does not need to be wound manually.

Pendulum

pendulumssimple pendulumpendula
The torsion pendulum rotates about the vertical axis of the wire, twisting it, instead of swinging like an ordinary pendulum.

Torque

moment armmomentlever arm
The clock's gears apply a pulse of torque to the top of the torsion spring with each rotation to keep the wheel going.

Watch

wristwatchwatcheswristwatches
The wheel and torsion spring function similarly to a watch's balance wheel and hairspring, as a harmonic oscillator to control the rate of the clock's hands.

Balance wheel

foliotbalancecompensation balance
The wheel and torsion spring function similarly to a watch's balance wheel and hairspring, as a harmonic oscillator to control the rate of the clock's hands.

Balance spring

hairspringisochronousbalance spring or "hair spring
The wheel and torsion spring function similarly to a watch's balance wheel and hairspring, as a harmonic oscillator to control the rate of the clock's hands.

Harmonic oscillator

harmonic oscillatorsharmonic oscillationdamped harmonic oscillator
The wheel and torsion spring function similarly to a watch's balance wheel and hairspring, as a harmonic oscillator to control the rate of the clock's hands.

Mainspring

mainspring barrelsspringspring motor
Torsion clocks are usually delicate, ornamental, spring-wound mantel clocks. The mainspring which turns the clock's wheels is kept wound by small changes in atmospheric pressure and/or local temperature, using a bellows mechanism.

Mantel clock

shelf clockmantelmantel clocks
Torsion clocks are usually delicate, ornamental, spring-wound mantel clocks.

Moment of inertia

rotational inertiamoments of inertiamoment of inertia tensor
The closer in the balls are, the smaller the moment of inertia of the torsion pendulum and the faster it will turn, like a spinning ice skater who pulls in her arms.

Escapement

detent escapementCross-beat escapementduplex escapements
The escapement mechanism, that changes the rotational motion of the clock's gears to pulses to drive the torsion pendulum, works rather like an anchor escapement.

Anchor escapement

deadbeat escapementdeadbeatGraham escapement
The escapement mechanism, that changes the rotational motion of the clock's gears to pulses to drive the torsion pendulum, works rather like an anchor escapement.

Bellows

bellowblowerBellows, hydraulic-powered
The mainspring which turns the clock's wheels is kept wound by small changes in atmospheric pressure and/or local temperature, using a bellows mechanism.

Nuremberg eggs

Their production was made possible by the miniaturisation of the torsion pendulum and coil spring mechanism by Nuremberg clockmaker Peter Henlein (d.

Movement (clockwork)

movementmovementswatch movement
One source recommends servicing intervals of: 3–5 years for watches, 15–20 years for grandfather clocks, 10–15 years for wall or mantel clocks, 15–20 years for anniversary clocks, and 7 years for cuckoo clocks, with the longer intervals applying to antique timepieces.

Upcycling

upcycledupcycleCreative Reuse
In Vorwarts (Go Forward) (pictured), Wassmann uses four simple objects to depict a vision of modern man on the precarious eave of the 20th century: an early optometry chart as background, a clock spring as eye, a 19th-century Chinese bone opium spoon from the Australian gold fields as nose and an upper set of dentures found on an Australian beach as mouth.

Pendulum clock

regulator clockClock pendulumregulator
Also called torsion-spring pendulum, this is a wheel-like mass (most often four spheres on cross spokes) suspended from a vertical strip (ribbon) of spring steel, used as the regulating mechanism in torsion pendulum clocks.

List of Greyhawk deities

IuzHextorKyuss
He is also the father of Kundo, through Nola's daughter by Uvot, Xanag.