GB1021155A - Electric timekeepers - Google Patents

Electric timekeepers

Info

Publication number
GB1021155A
GB1021155A GB2708063A GB2708063A GB1021155A GB 1021155 A GB1021155 A GB 1021155A GB 2708063 A GB2708063 A GB 2708063A GB 2708063 A GB2708063 A GB 2708063A GB 1021155 A GB1021155 A GB 1021155A
Authority
GB
United Kingdom
Prior art keywords
nodal points
pins
magnets
cross
round
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2708063A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP5054262A external-priority patent/JPS4112131B1/ja
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of GB1021155A publication Critical patent/GB1021155A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • G04C3/101—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
    • G04C3/102—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details of the mechanical oscillator or of the coil

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)

Abstract

1,021,155. Vibratory elements. DAINI SEIKOSHA KABUSHIKI KAISHA. July 9, 1963 [Sept. 6, 1962], No. 27080/63. Heading G5J. [Also in Division G3] In an electric timepiece, a time train is driven in accordance with a frequency controlled by a round bar vibrating reed vibrator which is electromagnetically maintained. Although nominally round, the bar 2b or 26, Figs. 1 to 16 (not shown), will normally have a slight ovality of cross-section. In order that it shall vibrate with a single tune amplitude-frequency characteristic to stabilize the vibration period and improve the resonance sharpness, it is supported at nodal points so that its long or short diameter lies in the direction of the excitation from the magnets 28, 28a, Figs. 14-16 (not shown). The supporting cross-pins define nodal points 0À224 l from the rod ends. These pins are clamped against a plane support surface on a trough-shaped support member 22 which is adjustable toward and away from the magnets carried on a base 21.
GB2708063A 1962-09-06 1963-07-09 Electric timekeepers Expired GB1021155A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5054262A JPS4112131B1 (en) 1961-11-10 1962-09-06

Publications (1)

Publication Number Publication Date
GB1021155A true GB1021155A (en) 1966-03-02

Family

ID=12861883

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2708063A Expired GB1021155A (en) 1962-09-06 1963-07-09 Electric timekeepers

Country Status (1)

Country Link
GB (1) GB1021155A (en)

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