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A grandfather clock (also a longcase clock, tall-case clock, grandfather's clock, hall clock or floor clock) is a tall, freestanding, weight-driven pendulum clock, with the pendulum held inside the tower or waist of the case. Clocks of this style are commonly 1.8–2.4 metres (6–8 feet) tall with an enclosed pendulum and weights, suspended by ...
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.
Produced Post Office/Official Government Vienna Regulators. Some clocks signed "Kreutz & Bauer in Wein". Gebr. Resch, Ebensee, Austria. Used trademark "REMEMBER". Factory began 1862 in Vienna, moved to Ebensee 1871. Produced up to 15,000 clocks in 1885. Factory sold to Junghans 1901 & renamed "Uhrenfabrik Ebensee Austria". Johann Mold, (c. 1870 ...
The following is a list of American companies that produced, or currently produce clocks. Where known, the location of the company and the dates of clock manufacture follow the name. Samuel Abbott; Montpelier, Vermont (1830–1861) Ansonia Clock Company; Ansonia, Connecticut and Brooklyn, New York (1851–1929)
Engraved initial letters on back of Winterhalder & Hofmeier clocks from Schwaerzenbach, Black Forest, Germany The firm Winterhalder Uhrenfabrik was established in 1810 by Thomas Winterhalder. Even his grandfather Nikolaus Winterhalder (1710-1743) made quality Black Forest clocks with wooden cogs and weights from stones. [ 1 ]
The timekeeping accuracy of the pendulum was exceeded by the quartz crystal oscillator, invented in 1921, and quartz clocks, invented in 1927, replaced pendulum clocks as the world's best timekeepers. [2] Pendulum clocks were used as time standards until World War 2, although the French Time Service continued using them in their official time ...