GB493640A - Improvements in electrical switches or circuit breakers and contacts therefor - Google Patents
Improvements in electrical switches or circuit breakers and contacts thereforInfo
- Publication number
- GB493640A GB493640A GB1315937A GB1315937A GB493640A GB 493640 A GB493640 A GB 493640A GB 1315937 A GB1315937 A GB 1315937A GB 1315937 A GB1315937 A GB 1315937A GB 493640 A GB493640 A GB 493640A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- arcing
- plunger
- housing
- fixed
- 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
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
Abstract
493,640. Oil -blast switches; switch contacts. WHITEHEAD, G. E., and WHITEHEAD'S ELECTRICAL INVENTIONS, Ltd. May 7, 1937, No. 13159. [Class 38 (v)] The main current carrying fixed contact in or for a circuit-breaker is of the resilientsleeve type and carried at the mouth of a metal housing, the co-operating main moving contact is in the form of a tubular plug carrying within its bore a spring-urged arcing-contact in the form of a plunger engageable with an arcing-contact surface in the housing above the resilient sleeve contact. In Fig. 1, a metal housing 3 carried on the contact-stem 1 is enlarged at 4 to form a casing for a circularlylaminated, main fixed contact 5, as in Specification 409,085, and is threaded to receive an enlarged part 14 carrying the renewable fixed-arcing contact 13. The main moving plug contact 6 carries in a central bore an arcing contact plunger 9 which is urged upwards by a spring 10 in the bore surrounding a stem 11. The housing 3 acts as an explosion pot, and is disposed in an insulating shrouding tube 15 in a perforation in a plate 16 extending across the oil tank of the breaker. In Fig. 3, the plunger 9 slides in a resilient sleeve contact 18 similar to 5, and spring 10 is replaced by external springs 19 on guide rods 20 on a plate 21 fixed to the plunger. Oil may be pumped upwards through the housing 3 during opening of the breaker. Specification 392,930 also is referred to. The Provisional Specification states also that the arcing plunger may engage a laterally-projecting arcing- contact in the housing, as in the above-mentioned Specifications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1315937A GB493640A (en) | 1937-05-07 | 1937-05-07 | Improvements in electrical switches or circuit breakers and contacts therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1315937A GB493640A (en) | 1937-05-07 | 1937-05-07 | Improvements in electrical switches or circuit breakers and contacts therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB493640A true GB493640A (en) | 1938-10-12 |
Family
ID=10017943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1315937A Expired GB493640A (en) | 1937-05-07 | 1937-05-07 | Improvements in electrical switches or circuit breakers and contacts therefor |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB493640A (en) |
-
1937
- 1937-05-07 GB GB1315937A patent/GB493640A/en not_active Expired
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