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  2. Hermle Clocks - Wikipedia

    en.wikipedia.org/wiki/Hermle_Clocks

    Hermle manufactures mechanical mechanisms, battery operated mechanisms, accessories such as dial, pendulums, weight shells, and do-it-yourself clock kits as well as finished clocks. Hermle is a manufacturer that sells to the wholesale industry and operates in over 80 countries with offices in Germany and the United States, since 1977, as Hermle ...

  3. 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 ...

  4. Howard Miller Clock Company - Wikipedia

    en.wikipedia.org/wiki/Howard_Miller_Clock_Company

    Howard Miller Clock Company was founded in 1926, as the Herman Miller Clock Company division of office furniture manufacturer Herman Miller, specializing in chiming wall and mantle clocks. [2] It was spun off in 1937 and renamed, under the leadership of Herman Miller's son Howard C. Miller (1905–1995). [ 3 ]

  5. Pendulum clock - Wikipedia

    en.wikipedia.org/wiki/Pendulum_clock

    A torsion pendulum clock requiring only annual winding is sometimes called a "400-Day clock" or "anniversary clock", sometimes given as a wedding gift. Torsion pendulums are also used in "perpetual" clocks which do not need winding, as their mainspring is kept wound by changes in atmospheric temperature and pressure with a bellows arrangement.

  6. Verge escapement - Wikipedia

    en.wikipedia.org/wiki/Verge_escapement

    The first use of pendulums in clocks around 1656 suddenly increased the accuracy of the verge clock from hours a day to minutes a day. Most clocks were rebuilt with their foliots replaced by pendulums, [ 34 ] [ 35 ] to the extent that it is difficult to find original verge and foliot clocks intact today.

  7. Quartz clock - Wikipedia

    en.wikipedia.org/wiki/Quartz_clock

    Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency , so that quartz clocks and watches are at least an order of magnitude more accurate than mechanical clocks .

  8. Movement (clockwork) - Wikipedia

    en.wikipedia.org/wiki/Movement_(clockwork)

    A mechanical movement contains all the moving parts of a watch or clock except the hands, and in the case of pendulum clocks, the pendulum and driving weights. The movement is made of the following components: [2] Power source Either a mainspring, or a weight suspended from a cord wrapped around a pulley.

  9. Escapement - Wikipedia

    en.wikipedia.org/wiki/Escapement

    The invention of the escapement was an important step in the history of technology, as it made the all-mechanical clock possible. [1]: p.514-515 [2] [3] The first all-mechanical escapement, the verge escapement, was invented in 13th-century Europe.