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  2. Conservation and restoration of clocks - Wikipedia

    en.wikipedia.org/wiki/Conservation_and...

    Clockwork damage can be inflicted via over-winding, interaction with contaminants, ill-advised lubrication, and clock movement when a pendulum is not secured prior to the clock being moved. A free swinging pendulum can itself be damaged and can inflict damage onto other interior components during such clock movement.

  3. Riefler escapement - Wikipedia

    en.wikipedia.org/wiki/Riefler_escapement

    In the Riefler escapement, the energy required to keep the pendulum swinging is instead supplied by bending the short straight spring strip which suspends the pendulum. [4] The upper end of the suspension spring is not attached to a fixed support as in most clocks, but instead is attached to a heavy metal bearer, which pivots on two aligned ...

  4. Atmos clock - Wikipedia

    en.wikipedia.org/wiki/Atmos_clock

    The torsion pendulum has a period of precisely one minute; thirty seconds to rotate in one direction and thirty seconds to return to the starting position. This is thirty times slower than the 0.994 m (39.1 in) seconds pendulum typically found in a longcase clock, where each swing (or half-period) takes one second.

  5. Pendulum clock - Wikipedia

    en.wikipedia.org/wiki/Pendulum_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 oscillator : It swings back and forth in a precise time interval dependent on its length, and resists swinging at other rates.

  6. Mainspring - Wikipedia

    en.wikipedia.org/wiki/Mainspring

    The stackfreed was an eccentric cam mounted on the mainspring arbor, with a spring-loaded roller that pressed against it. The cam had a 'snail' shape so that early in the running period when the mainspring was pushing strongly, the spring would bear against the wide part of the cam, providing a strong opposing force, while later in the running ...

  7. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    The Shortt–Synchronome clock, an electrical driven pendulum clock designed in 1921, was the first clock to be a more accurate timekeeper than the Earth itself. [167] A succession of innovations and discoveries led to the invention of the modern quartz timer. The vacuum tube oscillator was invented in 1912. [168]

  8. Turret clock - Wikipedia

    en.wikipedia.org/wiki/Turret_clock

    A turret clock or tower clock is a clock designed to be mounted high in the wall of a building, usually in a clock tower, in public buildings such as churches, university buildings, and town halls. As a public amenity to enable the community to tell the time, it has a large face visible from far away, and often a striking mechanism which rings ...

  9. The Arthur Pequegnat Clock Company - Wikipedia

    en.wikipedia.org/wiki/The_Arthur_Pequegnat_Clock...

    Pequegnat was also instrumental in the production of parts for the Franco-American Clock Company whose clocks mimicked the German box or Vienna regulators. [citation needed] The company distinguished itself as a competitor for some of the better American pendulum clocks, such as those made by Seth Thomas. Their clocks often looked like models ...

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