GB368827A - Improvements in and relating to electric clocks - Google Patents
Improvements in and relating to electric clocksInfo
- Publication number
- GB368827A GB368827A GB3729230A GB3729230A GB368827A GB 368827 A GB368827 A GB 368827A GB 3729230 A GB3729230 A GB 3729230A GB 3729230 A GB3729230 A GB 3729230A GB 368827 A GB368827 A GB 368827A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- pendulum
- contact
- arm
- impulses
- 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
- G04C11/00—Synchronisation of independently-driven clocks
- G04C11/08—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction
- G04C11/081—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet
- G04C11/082—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet acting on the pendulum
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Abstract
368,827. Electric clocks. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and CLINKER, R. C., Tryfn, Bilton, near Rugby. Dec. 10, 1930, No. 37292. [Class 139.] Pendulums.-The pendulum 1 is driven by impulses derived from the interaction between currents in a coil 3 fixed thereto and the flux produced by a fixed coil 5 energized from A.C. supply mains. The pendulum carries a gravity operated contact arm 9 pivoted about an insulated pin 10 coacting with fixed contacts 13, 14. The coil 3 swings along the core 4 of coil 5, and when swinging to the left is short-circuited over the circuit 3, 12, 1, 8, 15, 13, 9, 11, 3 thereby being impelled to the left. During a part of the return swing the arm 9 and contact 14 connects a condenser 16 in series with the coil 3, the resultant phaseadvanced current therein producing an impulse to the right. Stops 17, 18 on the pendulum coact with the arm 9 to ensure that the impulses occur only during a part of each swing. The transmission between pendulum and wheel train is of any known kind, for example ratchet and pawl. According to the Provisional Specification contact 14 and condenser 16 may be dispensed with, one way impulses only being used, and the coil 3 may swing free of the core 4 at the left hand end of its movement so that there is zero current in coil 3 as contact 9 leaves 13. Specification 163,097, [Class 37, Electricity, Measuring &c.], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3729230A GB368827A (en) | 1930-12-10 | 1930-12-10 | Improvements in and relating to electric clocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3729230A GB368827A (en) | 1930-12-10 | 1930-12-10 | Improvements in and relating to electric clocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB368827A true GB368827A (en) | 1932-03-10 |
Family
ID=10395308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3729230A Expired GB368827A (en) | 1930-12-10 | 1930-12-10 | Improvements in and relating to electric clocks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB368827A (en) |
-
1930
- 1930-12-10 GB GB3729230A patent/GB368827A/en not_active Expired
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