GB497686A - Improvements in or relating to mercury switches - Google Patents
Improvements in or relating to mercury switchesInfo
- Publication number
- GB497686A GB497686A GB1986637A GB1986637A GB497686A GB 497686 A GB497686 A GB 497686A GB 1986637 A GB1986637 A GB 1986637A GB 1986637 A GB1986637 A GB 1986637A GB 497686 A GB497686 A GB 497686A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mercury
- contacts
- container
- rod
- negretti
- 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
Landscapes
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
497,686. Mercury switches. NEGRETTI, H. N., NEGRETTI, P. E., and LUDWICK, W. July 17, 1937, No. 19866. [Class 38 (v)] A mercury switch comprises a container 1 provided with a number of pairs of contacts 2 and holding sufficient mercury 14 to bridge the lowest pair of contacts, which container is fixed to a flexible rod 3 rigidly mounted at its lower end 4. The upper end 5 of the rod passes slidingly through a hole 17 in an arm 6 which rotates about an axis passing through the point of mounting of rod 3 to cause each pair of contacts to become the lowest and to be connected by the mercury 14. Alternatively the contacts may be separately spaced and each in turn is then connected to the next contact in the direction of roll. Oil may be added to the container to cause the mercury to flow more smoothly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1986637A GB497686A (en) | 1937-07-17 | 1937-07-17 | Improvements in or relating to mercury switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1986637A GB497686A (en) | 1937-07-17 | 1937-07-17 | Improvements in or relating to mercury switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB497686A true GB497686A (en) | 1938-12-23 |
Family
ID=10136483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1986637A Expired GB497686A (en) | 1937-07-17 | 1937-07-17 | Improvements in or relating to mercury switches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB497686A (en) |
-
1937
- 1937-07-17 GB GB1986637A patent/GB497686A/en not_active Expired
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