GB430482A - Improvements in or relating to electric circuit interrupters - Google Patents
Improvements in or relating to electric circuit interruptersInfo
- Publication number
- GB430482A GB430482A GB5238/35A GB523835A GB430482A GB 430482 A GB430482 A GB 430482A GB 5238/35 A GB5238/35 A GB 5238/35A GB 523835 A GB523835 A GB 523835A GB 430482 A GB430482 A GB 430482A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arc
- extension
- arcs
- magnitude
- boric acid
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor
Landscapes
- Fuses (AREA)
- Circuit Breakers (AREA)
Abstract
430,482. Fusible cut-outs. WESTING- HOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, U.S.A.-(Assignees of Rawlins, H. L. ; 710, Coal Street, Wilkinsburg, Pennsylvania, U.S.A.) Feb. 18, 1935, No. 5238. Convention date, March 30, 1934. [Class 38 (i)] In a circuit-breaker comprising a tubular lining 21 of material such as boric acid, which evolves an arc-extinguishing gas when in proximity to an arc, and a central conducting rod 31 which on rupture of a fuse element 43 draws the arc through the tube 21 under action of a spring 41, the rod 31 has an insulating extension 33 which for small-magnitude arcs is drawn into the tube 21 to force the arc into close engagement with the gas-producing material. For large-magnitude arcs, the extension 33 is' disconnected owing to melting of the reduced portion 39 by the heat of the arc. The extension 33 may be of ceramic material, fibre, &c. according to the place of use or may be of gasproducing material such as boric acid in which case a reinforcing member 51 screwing into cap 47 is employed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US718267A US2108550A (en) | 1934-03-30 | 1934-03-30 | Circuit interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB430482A true GB430482A (en) | 1935-06-19 |
Family
ID=24885450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5238/35A Expired GB430482A (en) | 1934-03-30 | 1935-02-18 | Improvements in or relating to electric circuit interrupters |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2108550A (en) |
| DE (1) | DE643393C (en) |
| FR (1) | FR788083A (en) |
| GB (1) | GB430482A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2418171A (en) * | 1944-09-14 | 1947-04-01 | Westinghouse Electric Corp | Circuit interrupter |
| US2546074A (en) * | 1949-06-02 | 1951-03-20 | S & C Electric Co | Terminal construction for fuses and the like |
| DE1074122B (en) * | 1955-11-04 | 1960-01-28 | ||
| DE1105028B (en) * | 1959-07-01 | 1961-04-20 | Concordia Maschinen U Elek Zit | Load and circuit breaker with extinguishing chamber made of organic material |
-
1934
- 1934-03-30 US US718267A patent/US2108550A/en not_active Expired - Lifetime
-
1935
- 1935-02-18 GB GB5238/35A patent/GB430482A/en not_active Expired
- 1935-03-24 DE DES117683D patent/DE643393C/en not_active Expired
- 1935-03-30 FR FR788083D patent/FR788083A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR788083A (en) | 1935-10-03 |
| US2108550A (en) | 1938-02-15 |
| DE643393C (en) | 1937-04-07 |
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