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GB1169220A - Electric Timepiece - Google Patents

Electric Timepiece

Info

Publication number
GB1169220A
GB1169220A GB58235/66A GB5823566A GB1169220A GB 1169220 A GB1169220 A GB 1169220A GB 58235/66 A GB58235/66 A GB 58235/66A GB 5823566 A GB5823566 A GB 5823566A GB 1169220 A GB1169220 A GB 1169220A
Authority
GB
United Kingdom
Prior art keywords
vibrator
wheel
magnetic
magnets
magnet
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
GB58235/66A
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.)
Citizen Holdings Co Ltd
Citizen Watch Co Ltd
Original Assignee
Citizen Holdings Co Ltd
Citizen Watch Co Ltd
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
Application filed by Citizen Holdings Co Ltd, Citizen Watch Co Ltd filed Critical Citizen Holdings Co Ltd
Publication of GB1169220A publication Critical patent/GB1169220A/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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Toys (AREA)

Abstract

1,169,220. Electric timepieces. CITIZEN TOKEI K.K. Dec.29, 1966 [Dec. 30, 1965; July 12, 1966], No. 58235/66. Heading G3T. An electronic timepiece comprises a transistor drive circuit 107 suitable to be fed by a battery 108, a 'W'-shaped vibrator 84 electromagnetically driven by the circuit and a magnetic wheel 32 magnetically coupled with magnets 119, 120 attached to the U-shaped arms 84d, 84e of the vibrator. The base 84a of the vibrator is spot welded to a mounting piece 174 and secured to a plate 30 of the timepiece by screws 75, 76. The arms of the vibrator are bent along lines b-b<SP>1</SP>, d-d<SP>1</SP> to lie in planes at right angles to the plane of the base 84a and each magnet 119, 120 comprises four limbs in the shape of a rectangle. Each magnet has a gap in one of its shorter limbs for co-operation with the wheel 32. Magnetic yokes 106, 106a and counter weights 141, 141a are supported at opposite ends of each magnet, the yokes co-operating with search and drive coil assemblies 55, 73. Fine adjustment of the position of the vibrator assembly with respect to the wheel 32 is effected by rotating an eccentric cam 49. Adjustment of the axial position of the wheel 32 with respect to the gap in the magnets is effected by changing the thickness of shims 26-28 which alter the height of the mount 29 for the wheel 32. The frequencies of the vibrating arms may be equalised by adjusting magnetic screws such as 56 of the coil assemblies 55, 73. A flywheel 39 is freely rotatable on the shaft 40 of the magnetic wheel 32, the motion of which is transmitted through a gear train to drive seconds, minutes and hours hands. The timepiece is started by pushing in a stem shaft 25 which closes a switch to connect the battery to the transistor circuit. Figs. 10-13 (not shown), illustrate modified forms of the vibrator whilst Figs. 14-18 (not shown) illustrate modified forms of the magnets 119, 120.
GB58235/66A 1965-12-30 1966-12-29 Electric Timepiece Expired GB1169220A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10840365 1965-12-30
JP6638666 1966-07-12

Publications (1)

Publication Number Publication Date
GB1169220A true GB1169220A (en) 1969-10-29

Family

ID=26407590

Family Applications (1)

Application Number Title Priority Date Filing Date
GB58235/66A Expired GB1169220A (en) 1965-12-30 1966-12-29 Electric Timepiece

Country Status (3)

Country Link
US (1) US3469389A (en)
DE (1) DE1523893C3 (en)
GB (1) GB1169220A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3604202A (en) * 1968-08-30 1971-09-14 Ebouches Sa S Electric timepiece
CH556568A (en) * 1969-02-06 1974-11-29
US3621467A (en) * 1969-04-10 1971-11-16 Bulova Watch Co Inc Amplitude limiter for tuning fork oscillator
CH528771A (en) * 1969-12-12 1972-05-31 Bulova Watch Co Inc Electronic watch
GB1361229A (en) * 1970-07-27 1974-07-24 Suwa Seikosha Kk Electric watches
US3672153A (en) * 1970-08-03 1972-06-27 Bulova Watch Co Inc Miniaturized battery-operated tuning-fork timepiece
GB1376845A (en) * 1971-02-12 1974-12-11 Suwa Seikosha Kk Electronic timepiece movement
US3748845A (en) * 1971-12-02 1973-07-31 Bulova Watch Co Inc Electronic system module for crystal-controlled watch
US3759031A (en) * 1972-01-26 1973-09-18 Hmw Industries Modular solid state wristwatch
US4084404A (en) * 1972-10-17 1978-04-18 Ebauches S.A. Electronic watch

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308361A (en) * 1963-05-13 1967-03-07 Nakai Akira Electromagnetic vibrator
US3212252A (en) * 1963-06-04 1965-10-19 Citizen Watch Co Ltd Vibratory motor and controlled circuit for a small timepiece
US3201932A (en) * 1964-07-10 1965-08-24 United States Time Corp Vibratory frequency standard for a timekeeping device
US3277644A (en) * 1965-06-08 1966-10-11 Jeco Kk Tuning fork timepiece

Also Published As

Publication number Publication date
DE1523893B2 (en) 1973-03-29
US3469389A (en) 1969-09-30
DE1523893C3 (en) 1973-10-18
DE1523893A1 (en) 1970-10-08

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