GB764450A - A battery operated electromagnetic wrist watch - Google Patents
A battery operated electromagnetic wrist watchInfo
- Publication number
- GB764450A GB764450A GB2033/55A GB203355A GB764450A GB 764450 A GB764450 A GB 764450A GB 2033/55 A GB2033/55 A GB 2033/55A GB 203355 A GB203355 A GB 203355A GB 764450 A GB764450 A GB 764450A
- Authority
- GB
- United Kingdom
- Prior art keywords
- balance
- coil
- supported
- spring
- plate
- 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
- G04C3/04—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 balance
- G04C3/06—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 balance using electromagnetic coupling between electric power source and balance
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
764,450. Watches. HAMILTON WATCH CO. Jan. 24, 1955 [Feb. 12, 1954], No. 2033/55. Class 139. In an electric watch the balance is maintained in oscillation by the inter - action between a coil carried by the balance and a magnetic field provided by two permanent magnets, the coil being periodically connected to a battery within the watch casing. The balance staff 57, Fig. 3, is supported between the balance cock 53 and a plate 45 in bearings 56, 58. The plate 45 supports straight and curved permanent magnets 48, 49, Fig. 4, the ends of which are bridged by a shunt 50 supported on non- magnetic bridges 50' to provide magnetic fields 51, 52, Fig. 12, through which passes a coil 65 carried by the balance 61. The balance 61 is provided with screws which counter-balance the weight of the coil 65 one end of which is connected to the balance and the other end of which to a nut 92, Fig. 3, which receives a screw 93 connected to a contact strip 68 supported by an insulated sleeve 69 on the roller 63. A bridge 77, Fig. 2, supported by the plate 45 and insulated therefrom is connected by a wire 79 to a battery 46 contained in a recess in the plate 45. A pin 73, Fig. 10, is adjustably supported at the end of the bridge 77 and carries a coil spring 72 the end 71 of which extends towards the balance staff. A spring contact arm 70 is connected to the end 71 of the spring 72. The roller 63 carries a jewel pin 83 which as the balance swings counter-clockwise meets the extension 71 of the spring 72 and pulls the end of the contact arm 70 into engagement with the contact strip 68 thereby energizing the coil 65 and impulsing the balance. The arm 70 does not meet the contact strip 68 as the balance swings clockwise. As the balance swings counterclockwise and clockwise a pin 84, Fig. 4, depending from a roller 62 alternately stepson one of two intermeshing gears 85, 86 by half a tooth pitch. The gear 85 has a pinion 23 which drives the train of gears to the hands 18, 19, 20, Fig. 3.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US764450XA | 1954-02-12 | 1954-02-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB764450A true GB764450A (en) | 1956-12-28 |
Family
ID=22132055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2033/55A Expired GB764450A (en) | 1954-02-12 | 1955-01-24 | A battery operated electromagnetic wrist watch |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB764450A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2923123A (en) * | 1957-05-31 | 1960-02-02 | Hamilton Watch Co | Electric time piece |
US2936572A (en) * | 1957-08-12 | 1960-05-17 | Hamilton Watch Co | Balance wheel for electric watch |
DE1106697B (en) * | 1957-10-30 | 1961-05-10 | Hamilton Watch Co | Contact device for electrical clocks |
US3058292A (en) * | 1957-06-07 | 1962-10-16 | Hamilton Watch Co | Balance wheel coil mounting assembly |
US3098185A (en) * | 1957-08-20 | 1963-07-16 | Hamilton Watch Co | Electric watch having transistor controlled contact |
-
1955
- 1955-01-24 GB GB2033/55A patent/GB764450A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2923123A (en) * | 1957-05-31 | 1960-02-02 | Hamilton Watch Co | Electric time piece |
US3058292A (en) * | 1957-06-07 | 1962-10-16 | Hamilton Watch Co | Balance wheel coil mounting assembly |
US2936572A (en) * | 1957-08-12 | 1960-05-17 | Hamilton Watch Co | Balance wheel for electric watch |
US3098185A (en) * | 1957-08-20 | 1963-07-16 | Hamilton Watch Co | Electric watch having transistor controlled contact |
DE1106697B (en) * | 1957-10-30 | 1961-05-10 | Hamilton Watch Co | Contact device for electrical clocks |
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