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  2. Hexagonal chess - Wikipedia

    en.wikipedia.org/wiki/Hexagonal_chess

    The clock is not bound to the board geometry or initial setup, and works for two-player games as well; there exists a github repository with a python implementation and some docs. It was designed around year 2012, but some 10 years elapsed before a working clock was available. [citation needed]

  3. Riefler escapement - Wikipedia

    en.wikipedia.org/wiki/Riefler_escapement

    An escapement is the mechanism in a mechanical clock that gives the pendulum precise impulses to keep it swinging, and allows the gear train to advance a set amount with each pendulum swing, moving the clock hands forward at a steady rate. The Riefler escapement was an improvement of the deadbeat escapement, the previous standard for precision ...

  4. Wheel train - Wikipedia

    en.wikipedia.org/wiki/Wheel_train

    In striking clocks, the striking train is a gear train that moves a hammer to strike the hours on a gong. It is usually driven by a separate but identical power source to the going train. In antique clocks, to save costs, it was often identical to the going train, and mounted parallel to it on the left side when facing the front of the clock. [11]

  5. Balance spring - Wikipedia

    en.wikipedia.org/wiki/Balance_spring

    Balance wheel in a 1950s alarm clock, showing the (1) balance spring and (2) regulator. Clip of operating balance wheel in a mantel clock, showing motion of balance spring (top center) A balance spring , or hairspring , is a spring attached to the balance wheel in mechanical timepieces .

  6. Balance wheel - Wikipedia

    en.wikipedia.org/wiki/Balance_wheel

    As clocks were made smaller, first as bracket clocks and lantern clocks and then as the first large watches after 1500, balance wheels began to be used in place of foliots. [8] Since more of its weight is located on the rim away from the axis, a balance wheel could have a larger moment of inertia than a foliot of the same size, and keep better ...

  7. Lever escapement - Wikipedia

    en.wikipedia.org/wiki/Lever_escapement

    The lever escapement, invented by the English clockmaker Thomas Mudge in 1754 (albeit first used in 1769), is a type of escapement that is used in almost all mechanical watches, as well as small mechanical non-pendulum clocks, alarm clocks, and kitchen timers.

  8. Grasshopper escapement - Wikipedia

    en.wikipedia.org/wiki/Grasshopper_escapement

    Grasshopper escapement, 1820. The grasshopper escapement is a low-friction escapement for pendulum clocks invented by British clockmaker John Harrison around 1722. An escapement, part of every mechanical clock, is the mechanism that gives the clock's pendulum periodic pushes to keep it swinging, and each swing releases the clock's gears to move forward by a fixed amount, thus moving the hands ...

  9. Verge escapement - Wikipedia

    en.wikipedia.org/wiki/Verge_escapement

    [24] [11] Another is the clock built at the Palace of the Visconti, Milan, Italy, in 1335. [25] Astronomer Robertus Anglicus wrote in 1271 that clockmakers were trying to invent an escapement, but hadn't been successful yet. [26] [11] However, there is agreement that mechanical clocks existed by the late 13th century. [3] [23] [27]