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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. This is a weighted disk or wheel, often a decorative wheel with three or four chrome balls on ornate spokes, suspended by a thin wire or ribbon called a torsion spring (also ...
Hermle Clocks (1922–present) Junghans, Schramberg (1861–present) Kieninger Clock Company, initially in Mönchweiler, 1921 new factory in Aldingen (1912–present) Kieninger & Obergfell Uhrenfabrik (KUNDO trademark), Sankt Georgen (1918 - recent) Kienzle Uhren, Schwenningen - Schlenker and Keinzle until c1897 (1883-1996) Franz Ketterer
A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. The advantage of a pendulum for timekeeping is that it is an approximate harmonic oscillator : It swings back and forth in a precise time interval dependent on its length, and resists swinging at other rates.
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Kundo may refer to: A German manufacturer of torsion pendulum clocks in the early 20th century; Kundo: Age of the Rampant, a 2014 South Korean film; KundÅ Koyama, a Japanese writer; Kundo, a deity in the fictional World of Greyhawk
Huygens' maintaining power in use. The weight drive used by Christiaan Huygens in his early clocks acts as a maintaining power. In this layout, the weight which drives the clock is carried on a pulley and the cord (or chain) supporting the weight is wrapped around the main driving wheel on one side and the rewinding wheel on the other.
Jessop's Clock, San Diego, California, is a pendulum regulated multi-face town clock commissioned in 1905 by Joseph Jessop, a jewellery store owner in San Diego, California. The Ohio Clock is an 1815 clock in the United States Capitol; The Town Clock of Dubuque, Iowa is in a downtown clock tower, built in 1864.
It was used in precision pendulum clocks, and in automotive clocks until the 1970s. Electromagnetic clocks These keep time with a pendulum or balance wheel, but the pulses to keep it going are not provided by a mechanical movement and escapement linkage, but by magnetic force from an electromagnet . This was the mechanism used in the first ...