GB505082A - Improvements relating to electric switches employing mercury or other conducting liquid - Google Patents
Improvements relating to electric switches employing mercury or other conducting liquidInfo
- Publication number
- GB505082A GB505082A GB2686737A GB2686737A GB505082A GB 505082 A GB505082 A GB 505082A GB 2686737 A GB2686737 A GB 2686737A GB 2686737 A GB2686737 A GB 2686737A GB 505082 A GB505082 A GB 505082A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mercury
- plunger
- electrode
- cup
- switches
- 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
- H01H29/18—Switches having at least one liquid contact with level of surface of contact liquid displaced by non-electrical contact-making plunger
Landscapes
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Electromagnets (AREA)
Abstract
505,082. Mercury switches. CIANCHI, A. Oct. 4, 1937, No. 26867. [Class 38 (v)] In a switch wherein a plunger 1 of glass or quartz carrying a magnetic armature 3 floats in mercury 5 in a vessel 6, an electrode 7 co-operates with mercury 4 in a cup formed in the plunger 1, an electrode 19 is in contact with mercury in a side cup and an electrode 18 is in contact with the mercury .5. Over the upper edge of the cup mercury can flow to maintain constant the level of mercury in the cup. A conductor 2 through the plunger 1 connects the bodies of mercury 4 and 5. Upon failure of a source of current M which supplies a load L, a solenoid 12 is de-energized and allows the plunger 1 to sink guided by the electrode 7, the connection between electrode 7 and mercury 4 is broken, and the mercury 5 overflows into the side cup to make connection between electrodes 18 and 19 so that load L is now supplied from a secondary source E. Holes 10 and 11 allow the escape of superfluous mercury from the plunger. In modifications described, the plunger 1 may be of conducting material, or the electrode 7 may have a cup with or without a small hole which gives a delay break. Two switches may bo connected with a common solenoid as an alternative method of providing an auxiliary supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2686737A GB505082A (en) | 1937-10-04 | 1937-10-04 | Improvements relating to electric switches employing mercury or other conducting liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2686737A GB505082A (en) | 1937-10-04 | 1937-10-04 | Improvements relating to electric switches employing mercury or other conducting liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB505082A true GB505082A (en) | 1939-05-04 |
Family
ID=10250464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2686737A Expired GB505082A (en) | 1937-10-04 | 1937-10-04 | Improvements relating to electric switches employing mercury or other conducting liquid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB505082A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2522717A (en) * | 1947-12-11 | 1950-09-19 | Penn Electric Switch Co | Pressure operated switch |
-
1937
- 1937-10-04 GB GB2686737A patent/GB505082A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2522717A (en) * | 1947-12-11 | 1950-09-19 | Penn Electric Switch Co | Pressure operated switch |
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