GB497781A - Improvements in liquid contact electric switches - Google Patents
Improvements in liquid contact electric switchesInfo
- Publication number
- GB497781A GB497781A GB7364/38A GB736438A GB497781A GB 497781 A GB497781 A GB 497781A GB 7364/38 A GB7364/38 A GB 7364/38A GB 736438 A GB736438 A GB 736438A GB 497781 A GB497781 A GB 497781A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mercury
- diaphragm
- circuit
- liquid contact
- march
- 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
- H01H29/20—Switches having at least one liquid contact operated by tilting contact-liquid container
- H01H29/24—Switches having at least one liquid contact operated by tilting contact-liquid container wherein contact is made and broken between liquid and liquid
Landscapes
- Measuring Fluid Pressure (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Contacts (AREA)
Abstract
497,781. Mercury switches. BRITISH THOMSON-HOUSTON CO., Ltd. March 9, 1938, No. 7364. Convention date, March 11, 1937. [Class 38 (v)] A liquid contact circuit closer comprises two cupshaped metal terminals 1 separated by a diaphragm formed of circular abutting plates 2 and 3 of insulating refractory material which plates have circular holes 8 and 9 eccentrically formed in them. A glass bead 6 hermetically seals the switch which is filled with hydrogen. When the switch is rotated about its horizontal axis, the holes 8 and 9 fall below the level of the mercury 7 in the two chambers formed one on each side of the diaphragm, and allow the mercury to flow through and complete the circuit by joining the mercury 11 in a depression 10 in the diaphragm. The shape of the pool of mercury 10 is such as to aid both the making and breaking of the circuit, by allowing mercury to run out during make and run in during break.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US120546A US2101101A (en) | 1937-01-14 | 1937-01-14 | Liquid contact circuit closer |
| US130261A US2116383A (en) | 1937-01-14 | 1937-03-11 | Liquid contact circuit closer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB497781A true GB497781A (en) | 1938-12-28 |
Family
ID=41509030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7364/38A Expired GB497781A (en) | 1937-01-14 | 1938-03-09 | Improvements in liquid contact electric switches |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US2101101A (en) |
| FR (1) | FR832075A (en) |
| GB (1) | GB497781A (en) |
-
1937
- 1937-01-14 US US120546A patent/US2101101A/en not_active Expired - Lifetime
- 1937-03-11 US US130261A patent/US2116383A/en not_active Expired - Lifetime
-
1938
- 1938-01-14 FR FR832075D patent/FR832075A/en not_active Expired
- 1938-03-09 GB GB7364/38A patent/GB497781A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2101101A (en) | 1937-12-07 |
| US2116383A (en) | 1938-05-03 |
| FR832075A (en) | 1938-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB466258A (en) | Improvements in and relating to mercury and like conducting-liquid electric switches | |
| GB497781A (en) | Improvements in liquid contact electric switches | |
| GB483889A (en) | Improvements in and relating to electric circuit breakers having arc-extinguishing provision | |
| GB1298448A (en) | Vacuum electric switch | |
| GB370385A (en) | Improvements in or relating to electric circuit interrupters | |
| US1658620A (en) | Mercury switch | |
| FR2242766A1 (en) | Electric circuit breaker - has double fixed and moving contacts in series and double arc repulsion | |
| GB393478A (en) | Improvements in mercury switches | |
| GB525055A (en) | Improvements in and relating to fluid blast electric circuit breakers | |
| GB378738A (en) | Improvements in or relating to mercury switches | |
| GB374554A (en) | Improvements in electric circuit interrupters with contacts in oil or other insulating liquid | |
| GB407861A (en) | Improvements in or relating to mercury or like electric switches or relays | |
| GB356468A (en) | Improvements in or relating to electric switches with arc extinction by self-generated vapour pressure | |
| GB336786A (en) | Improvements in or relating to electrically operated signs of the monogrammic type | |
| GB1381701A (en) | Manufacture of reed switch contact units and the like | |
| GB359842A (en) | Improvements in and relating to electric mercury or other conducting liquid switches | |
| GB525131A (en) | Improvements relating to arrangements for extinguishing electric arcs | |
| GB454342A (en) | Improvements in and relating to mercury switches | |
| GB535799A (en) | Improvements in or relating to electric circuit breakers having arc-extinguishing arrangements | |
| GB169503A (en) | Improvements in electric battery lamps | |
| GB191005465A (en) | Improvements in and relating to Electric Switches. | |
| GB533896A (en) | Improvements in mercury circuit interrupters | |
| GB217013A (en) | Improvements in and relating to electric switches | |
| GB535956A (en) | Improvements in or relating to arc-extinguishing arrangements for electric circuit breakers | |
| GB842089A (en) | Improvements in or relating to electric conducting liquid control devices |