GB243712A - - Google Patents
Info
- Publication number
- GB243712A GB243712A GB29084/25A GB2908425A GB243712A GB 243712 A GB243712 A GB 243712A GB 29084/25 A GB29084/25 A GB 29084/25A GB 2908425 A GB2908425 A GB 2908425A GB 243712 A GB243712 A GB 243712A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- terminals
- terminal
- source
- mercury
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H29/00—Switches having at least one liquid contact
- H01H29/28—Switches having at least one liquid contact with level of surface of contact liquid displaced by fluid pressure
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Resistance Heating (AREA)
- Secondary Cells (AREA)
Abstract
243,712. British Thomson-Houston Co., Ltd., (Assignees of Vickery, H. W.). Nov. 28, 1924, [Convention date]. Supplying and controlling consuming devices.- A two-way conducting-liquid switch comprises chambers 10, 11 connected by a tube 12 and having pockets 13, 14 and dams 15, 16 so arranged that whem the gas in the chamber 10 is heated by a filament 21 the mercury is forced out of the chamber 10 into the chamber 11 into the position shown in the Figure so as to connect a terminal 19 with a terminal 20 instead of with a terminal 18. The switch is shown applied to a lighting system in which a source 23 is connected to the lights 25 through the terminals 19, 20 so long as the filaments 21 is kept heated by the source. Should the source 23, fail, mercury will flow from the chamber 11 to the chamber 10, breaking the circuit through the terminals 19, 20 but closing another circuit from a battery 27 to the lights 25 through the terminals 18, 19.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US752529A US1674489A (en) | 1924-11-28 | 1924-11-28 | Automatic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB243712A true GB243712A (en) | 1926-07-08 |
Family
ID=25026677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29084/25A Expired GB243712A (en) | 1924-11-28 | 1925-11-18 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1674489A (en) |
| FR (1) | FR616863A (en) |
| GB (1) | GB243712A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2620989A1 (en) * | 1975-05-13 | 1976-12-02 | Denisselle Jean | ELECTRIC SWITCH |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2484110A (en) * | 1945-05-18 | 1949-10-11 | Mestitz Ervin | Electric timing relay |
| US2577653A (en) * | 1945-05-22 | 1951-12-04 | Mabel S Dysart | Mercury switch |
| US2536306A (en) * | 1946-05-13 | 1951-01-02 | William V Offutt | System for preventing overheating of x-ray tubes and the like |
| US3166657A (en) * | 1960-08-22 | 1965-01-19 | Ishiguro Yasunosuke | Time delay mercury switch with gas equalization means |
-
1924
- 1924-11-28 US US752529A patent/US1674489A/en not_active Expired - Lifetime
-
1925
- 1925-11-18 GB GB29084/25A patent/GB243712A/en not_active Expired
-
1926
- 1926-05-28 FR FR616863D patent/FR616863A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2620989A1 (en) * | 1975-05-13 | 1976-12-02 | Denisselle Jean | ELECTRIC SWITCH |
Also Published As
| Publication number | Publication date |
|---|---|
| US1674489A (en) | 1928-06-19 |
| FR616863A (en) | 1927-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB243712A (en) | ||
| GB658663A (en) | Improvements in or relating to electric discharge lamps, and holders therefor | |
| GB704582A (en) | Improvements in or relating to electrical discharge lamps | |
| GB460648A (en) | Improvements in and relating to a decorative illumination device with a make-and-break lamp | |
| GB428978A (en) | Improvements in and relating to electric signalling devices | |
| US1647595A (en) | Electrical device for emitting light flashes and interrupting circuits | |
| US2694788A (en) | Circuit and starting switch for electric discharge devices | |
| GB505172A (en) | Improvements in and relating to electric discharge lamps | |
| GB500564A (en) | Improvements relating to miners' electric lamps | |
| JPS57164827A (en) | Headlight circuit for car | |
| GB673835A (en) | Indicating the condition of electrical circuits | |
| GB379610A (en) | Improvements in and relating to systems for signalling the positions of electric switches electrically | |
| GB854170A (en) | Improvements in, or relating to, electric fluorescent lamp lighting systems | |
| JPS5613659A (en) | Resistance ballast metal vapor discharge lamp | |
| GB139563A (en) | Improvements relating to electric lamps or torches for carrying in the pocket | |
| JPS5346187A (en) | Reserve lighting circuit | |
| GB702065A (en) | Gas-discharge electric lighting apparatus | |
| GB685273A (en) | Improvements in and relating to starting circuits for fluorescent lamps | |
| GB551425A (en) | Improvements in and relating to electric incandescent lamps | |
| GB206773A (en) | Improvements in or relating to electric incandescent lamps | |
| GB169503A (en) | Improvements in electric battery lamps | |
| GB191026892A (en) | Improved Means for Electrically Igniting Miners' Safety Lamps. | |
| GB230461A (en) | Fuses for electric lamps and other devices | |
| GB465534A (en) | Changeable light display devices | |
| GB676465A (en) | Improvements in or relating to circuit arrangements for charging a condenser |