GB1181015A - Improvements in and relating to Electric Clock Installations - Google Patents
Improvements in and relating to Electric Clock InstallationsInfo
- Publication number
- GB1181015A GB1181015A GB1002967A GB1002967A GB1181015A GB 1181015 A GB1181015 A GB 1181015A GB 1002967 A GB1002967 A GB 1002967A GB 1002967 A GB1002967 A GB 1002967A GB 1181015 A GB1181015 A GB 1181015A
- Authority
- GB
- United Kingdom
- Prior art keywords
- clock
- slave
- transistor
- circuit
- master
- 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
- G04C13/00—Driving mechanisms for clocks by master-clocks
- G04C13/02—Circuit arrangements; Electric clock installations
- G04C13/021—Circuit arrangements; Electric clock installations master-slave systems using transmission of singular pulses for driving directly slave-clocks step by step
- G04C13/022—Circuit arrangements; Electric clock installations master-slave systems using transmission of singular pulses for driving directly slave-clocks step by step via existing power distribution lines
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electronic Switches (AREA)
Abstract
1,181,015. Electric clocks. AMANO CORP. March 2, 1967, No. 10029/67. Heading G3T. A master and slave clock installation comprises a master clock and one or more slave clocks electrically inter-connected by at least oneA. C. mains supply conductor, the or at least one slave clock being normally driven in a stepwise manner by signal pulses transmitted at regular intervals by the master clock, each signal pulse comprising oscillations at a frequency higher than that of the A.C. supply and the or said at least one slave clock comprising at least one circuit tuned to the oscillation frequency. A slave clock adapted to be connected by conductors 3 to one A.C. mains comprises a circuit 10 tuned to the oscillation frequency of the signal pulses, and an amplifier including a transistor 32, coupled by a further tuned circuit 33 and a rectifier 34 to a transistor 36, the output of which energizes a relay coil 37 to close contacts 11 controlling the operating coil of time indicating means 30. The master clock includes a transistor oscillator Fig. 2 (not shown) for transmitting the signal pulses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1002967A GB1181015A (en) | 1967-03-02 | 1967-03-02 | Improvements in and relating to Electric Clock Installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1002967A GB1181015A (en) | 1967-03-02 | 1967-03-02 | Improvements in and relating to Electric Clock Installations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1181015A true GB1181015A (en) | 1970-02-11 |
Family
ID=9960141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1002967A Expired GB1181015A (en) | 1967-03-02 | 1967-03-02 | Improvements in and relating to Electric Clock Installations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1181015A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2494867A1 (en) * | 1980-11-24 | 1982-05-28 | Sonelec | Master slave distributed clock arrangement - uses master clock emitting time check pulse daily or weekly to slave clocks running independently |
| GB2164766A (en) * | 1984-09-18 | 1986-03-26 | Europ Electronic Syst Ltd | Improvements in clocks |
-
1967
- 1967-03-02 GB GB1002967A patent/GB1181015A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2494867A1 (en) * | 1980-11-24 | 1982-05-28 | Sonelec | Master slave distributed clock arrangement - uses master clock emitting time check pulse daily or weekly to slave clocks running independently |
| GB2164766A (en) * | 1984-09-18 | 1986-03-26 | Europ Electronic Syst Ltd | Improvements in clocks |
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