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  2. Pendulum clock - Wikipedia

    en.wikipedia.org/wiki/Pendulum_clock

    Pendulum clock conceived by Galileo Galilei around 1637. The earliest known pendulum clock design, it was never completed. Vienna regulator style pendulum wall clock. 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 ...

  3. Sessions Clock - Wikipedia

    en.wikipedia.org/wiki/Sessions_Clock

    Between 1903 and 1933 Sessions produced 52 models of mechanical clocks, ranging from Advertisers, large and small clocks with logos of various businesses, to wall, or regulator clocks, and shelf or mantel clocks, designed for the home. Many of the Session clocks from this period are prized by collectors.

  4. Torsion pendulum clock - Wikipedia

    en.wikipedia.org/wiki/Torsion_pendulum_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. 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 ...

  5. Ansonia Clock Company - Wikipedia

    en.wikipedia.org/wiki/Ansonia_Clock_Company

    Ansonia Clock Company. The Ansonia Clock Company was a clock manufacturing business founded in Ansonia, Connecticut, in 1851 and which moved to Brooklyn, New York, in 1878. The company has produced hundreds of different clock models, including Gingerbread, Porcelain, and Crystal Regulator styles. The business shut down in 2006.

  6. List of clock manufacturers - Wikipedia

    en.wikipedia.org/wiki/List_of_clock_manufacturers

    Gustav Becker Clock Company; Freiburg in Schlesien, Silesia (1850–1938) Florn. Thomas Haller (Thomas Haller AG), Schwenningen (1880-1900) then merged with Junghans. Thomas Ernst Haller (Haller AG), Schwenningen (1902-1928) then merged with Kienzle. Haller Uhrenfabrik GmbH, Simonswald (1874–present) Hamburg-Amerikanische Uhrenfabrik ...

  7. Riefler escapement - Wikipedia

    en.wikipedia.org/wiki/Riefler_escapement

    This clock has clear synthetic ruby pallets. (Dial on the right side.) The Riefler escapement is a mechanical escapement for precision pendulum clocks invented and patented [1] by German instrument maker Sigmund Riefler in 1889. [2] It was used in the astronomical regulator clocks made by his German firm Clemens Riefler from 1890 to 1965, [3 ...

  8. Fusee (horology) - Wikipedia

    en.wikipedia.org/wiki/Fusee_(horology)

    Fusee (horology) A fusee (from the French fusée, wire wound around a spindle) is a cone -shaped pulley with a helical groove around it, wound with a cord or chain attached to the mainspring barrel of antique mechanical watches and clocks. It was used from the 15th century to the early 20th century to improve timekeeping by equalizing the ...

  9. Verge escapement - Wikipedia

    en.wikipedia.org/wiki/Verge_escapement

    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'. Verge escapements were used from the late 13th century until the mid 19th century in clocks and pocketwatches.

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