GB369705A - Improvements relating to timekeepers - Google Patents
Improvements relating to timekeepersInfo
- Publication number
- GB369705A GB369705A GB259931A GB259931A GB369705A GB 369705 A GB369705 A GB 369705A GB 259931 A GB259931 A GB 259931A GB 259931 A GB259931 A GB 259931A GB 369705 A GB369705 A GB 369705A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pendulum
- lever
- shaft
- wheel
- roller
- 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
- G04C3/02—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 pendulum
- G04C3/025—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 pendulum using more than one pendulum
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
369,705. Clocks. JACKSON, H., 5, Maple Grove, St. Helens, Lancashire. Jan. 27, 1931, No. 2599. [Class 139.] Electric clocks.-In a timing device, a plurality of pendulums or balance wheels are so arranged and interconnected that they all perform in turn exactly similar functions and that their mutual interactions are also exactly similar. The embodiment described comprises two pendulums having electromagnetic driving means, but it is stated that other forms of drive may be employed. When one pendulum 10 is released by means described below it swings to the extreme left-hand position and, during its return swing, trips a lever 14 to depress a lever 16, Fig. 2, secured to a shaft 18. To the other end of the shaft 18 is fixed a lever 17 similar to the lever 16 and at this time detaining the other pendulum 11 which is thus released when the lever 16 is depressed. The pendulum 10 continues its swing until a roller 19 thereon contacts with a wheel 23 mounted on a shaft 25 to which is also secured a ratchet wheel 26, Fig. 3. The shaft 25 and wheel 26 are thus given a small rotation (clockwise in Fig. 3) which causes the closing of contacts 30, 31 by a pawl 29. An electromagnet 28 is thereupon energized and moves a pawl 27 to complete the step of movement of the ratchet wheel 26 and shaft 25. The wheel 23 acts on the roller 19 to draw the pendulum 10 to the right until the roller slips past the tooth 22, the pendulum then being retained by the lever 16. The lever 17 is shortly afterwards tripped by the other pendulum 11 to release the pendulum 10, the cycle thus commencing again. A wheel 24, identical with the wheel 23, is attached to the shaft 25 and correspondingly operates in conjunction with the pendulum 11 as described above. The drive to the clock-train is made through a pinion on the shaft 25 and the electromagnet 28 may close contacts in a number of slaveclock circuits. Specification 257,408, [Class 139, Watches &c.], is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB259931A GB369705A (en) | 1931-01-27 | 1931-01-27 | Improvements relating to timekeepers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB259931A GB369705A (en) | 1931-01-27 | 1931-01-27 | Improvements relating to timekeepers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB369705A true GB369705A (en) | 1932-03-31 |
Family
ID=9742407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB259931A Expired GB369705A (en) | 1931-01-27 | 1931-01-27 | Improvements relating to timekeepers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB369705A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4613236A (en) * | 1983-08-11 | 1986-09-23 | Rhythm Watch Co., Ltd. | Double pendulum clock |
US4707143A (en) * | 1985-10-07 | 1987-11-17 | Seikosha Co., Ltd. | Device for driving twist pendulums |
-
1931
- 1931-01-27 GB GB259931A patent/GB369705A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4613236A (en) * | 1983-08-11 | 1986-09-23 | Rhythm Watch Co., Ltd. | Double pendulum clock |
US4707143A (en) * | 1985-10-07 | 1987-11-17 | Seikosha Co., Ltd. | Device for driving twist pendulums |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB369705A (en) | Improvements relating to timekeepers | |
US1518317A (en) | Striking mechanism for electric clocks | |
US1535286A (en) | Balance escapement | |
US1963495A (en) | Timing device | |
US2322257A (en) | Clock | |
GB410554A (en) | Improvements in and relating to electrically driven clocks, particularly savings clocks | |
GB242472A (en) | Improvements in or relating to pendulum controlled mechanisms | |
US1638917A (en) | Compound-pendulum clock | |
US288906A (en) | Device for synchronizing clocks | |
US1731401A (en) | Clock with automatically-traveling advertising surface and annular gap for the clock hands | |
GB258247A (en) | An improved escapement for clockwork mechanism | |
GB362848A (en) | Improvements in or relating to electrical time transmitters | |
GB558322A (en) | An improved device for the release of clockwork and like intermittently released driving mechanism | |
GB390232A (en) | Electric clock movement | |
GB429581A (en) | Improvements in electro-magnetic driving devices for clockworks or similar mechanisms | |
GB686214A (en) | Wristlet watch with alarm arrangement | |
GB550549A (en) | Improvements in electrically driven clocks | |
GB257408A (en) | Improvements in electric clocks | |
GB531829A (en) | Improvements in or relating to eight day clock-work | |
GB531585A (en) | Improvements in and relating to timing devices for electric circuits | |
GB350944A (en) | Saving device applicable to clocks | |
GB462087A (en) | Electric clock mechanism | |
GB202329A (en) | Striking mechanism for electric clocks | |
GB289775A (en) | Improvements relating to electric watches or clocks | |
GB685766A (en) | Improvements relating to electric clocks |