GB533690A - Improvements in electric circuit interrupters - Google Patents
Improvements in electric circuit interruptersInfo
- Publication number
- GB533690A GB533690A GB30110/39A GB3011039A GB533690A GB 533690 A GB533690 A GB 533690A GB 30110/39 A GB30110/39 A GB 30110/39A GB 3011039 A GB3011039 A GB 3011039A GB 533690 A GB533690 A GB 533690A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mercury
- carbon
- circuit
- nov
- electrode
- 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
- H01H29/30—Switches having at least one liquid contact with level of surface of contact liquid displaced by expansion or evaporation thereof
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
533,690. Mercury switches. GENERAL MOTORS CORPORATION. Nov. 15, 1939, No. 30110. Convention date. Nov. 19, 1938. [Class 38 (v)] A device adapted to provide continuous interruption for a low voltage D.C. circuit comprises an electrode 6 of relatively high resistivity such as carbon arranged in a glass vessel 4 with a small hole 8 at the bottom where the carbon extends into contact with mercury 10 in a surrounding vessel; current passing through the carbon and mercury in series causes momentary volatilization of the mercury at the neck 8 and consequent interruption of the circuit, whereupon the vapour recondenses and the circuit is remade. The arrangement shown functions whatever the position of the vessels. In a modification, a pool of mercury is arranged over the carbon for the electrode 14 to dip into.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US241384A US2225969A (en) | 1938-11-19 | 1938-11-19 | Mercury interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB533690A true GB533690A (en) | 1941-02-18 |
Family
ID=22910496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30110/39A Expired GB533690A (en) | 1938-11-19 | 1939-11-15 | Improvements in electric circuit interrupters |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2225969A (en) |
| FR (1) | FR861908A (en) |
| GB (1) | GB533690A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2449439A (en) * | 1946-11-01 | 1948-09-14 | Gen Motors Corp | Mercury interrupter |
-
1938
- 1938-11-19 US US241384A patent/US2225969A/en not_active Expired - Lifetime
-
1939
- 1939-11-15 GB GB30110/39A patent/GB533690A/en not_active Expired
- 1939-11-27 FR FR861908D patent/FR861908A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR861908A (en) | 1941-02-21 |
| US2225969A (en) | 1940-12-24 |
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