Horology: time measuring systems or devices – Escapements – With oscillating or reciprocating means
Patent
1979-03-23
1980-10-14
Miska, Vit W.
Horology: time measuring systems or devices
Escapements
With oscillating or reciprocating means
368179, 368278, G04B 1500, G04B 1702, G04B 3700
Patent
active
042285330
ABSTRACT:
An autonomously operating pendulum mechanism, adapted to be attached as a unit to a clockwork, comprises a supporting plate adapted to be attached to a clockwork casing in overlying spaced relationship to the front face of the casing. The supporting plate is fastened to the casing by a fastening device which is concentric with the spindles for the clock hands and through which said spindles may project to the exterior of the plate. A pivot bearing is provided on the supporting plate vertically above the spindles adjacent the upper edge of the casing, and the lower edge of the supporting plate carries a circuit board having an electrically energizable coil thereon located immediately below the clockwork casing comprising a portion of an electrical drive mechanism. A pendulum arm extends from the pivot bearing for swinging motion across the front face of the casing in the region between the supporting plate and casing, and has, at its lower end, a permanent magnet which cooperates with the coil to drive the pendulum. The pendulum arm is shaped to define two portions which are disposed in angular relation to one another so that the upper portion of the arm swings in a limited region between the clockwork spindles and one side of the clockwork casing while the lower portion of the arm below the spindles swings between points which are substantially equidistant from the opposite sides of the clockwork casing.
REFERENCES:
patent: 4043118 (1977-08-01), Haag et al.
patent: 4073130 (1978-02-01), Jauch
Kienzle Uhrenfabriken GmbH
Miska Vit W.
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