August. Tuning Fork Clock. Louis-Clément Breguet

Discussion in 'Musée international d'horlogerie Centre d'étude' started by CET MIH, Aug 10, 2009.

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  1. CET MIH

    CET MIH Museums

    Mar 26, 2009
    La Chaux-de-Fonds
    Country Flag:
    Louis-Clément Breguet

    Tuning-fork clock

    Nickel-plated metal, brass, steel
    Height: 46 cm. Width: 26 cm. Depth: 19 cm.
    Dial signed: BREGUET N° 1150 BREVETE SGDG
    Case signed: BREGUET
    Initials PK at base of diapason.

    Finished in 1868

    The nickel-plated metal case has glass on all four sides.

    The annular dial is engraved with Roman numerals for the hours and Arabic numerals for the five minutes, with a small eccentric seconds dial in the upper part.

    The clock movement was built on the principles set down in patent n° 73414 registered on 20 October 1866 by Louis-Clément Breguet. It has two barrels, a train and an escapement. The regulating organ is a steel tuning-fork, two hundred and fifty millimetres in length and vibrating at one hundred hertz. One of its arms touches the escapement, whose function is to keep it vibrating.

    1967 (purchased).
    Finished in 1868.

    1867, Paris
    1997, MIH, p. 33, illus.

    Comptes Rendus de l’Académie des Sciences, volume LXIII, 1866, p. 991.
    George Sire, Rapport sur l’horlogerie à l’Exposition Universelle de 1867, Paris, s.d.
    Frédéric Marle, "La pendule à diapason de Louis Breguet", Annuaire de la montre suisse, 1964, 1965.
    MIH, 1974, p. 131, illus.
    Breguet, 1997, p. 335, illus.

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