GB1169220A - Electric Timepiece - Google Patents
Electric TimepieceInfo
- 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
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.
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)
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 |
CH1850369A4 (en) * | 1969-12-12 | 1972-05-31 | ||
GB1361230A (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)
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 |
-
1966
- 1966-12-27 US US604372A patent/US3469389A/en not_active Expired - Lifetime
- 1966-12-29 DE DE1523893A patent/DE1523893C3/en not_active Expired
- 1966-12-29 GB GB58235/66A patent/GB1169220A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1523893B2 (en) | 1973-03-29 |
DE1523893C3 (en) | 1973-10-18 |
DE1523893A1 (en) | 1970-10-08 |
US3469389A (en) | 1969-09-30 |
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