GB249870A - Improvements in or relating to arc-rupturing devices for electric circuit-interrupting apparatus - Google Patents
Improvements in or relating to arc-rupturing devices for electric circuit-interrupting apparatusInfo
- Publication number
- GB249870A GB249870A GB8083/26A GB808326A GB249870A GB 249870 A GB249870 A GB 249870A GB 8083/26 A GB8083/26 A GB 8083/26A GB 808326 A GB808326 A GB 808326A GB 249870 A GB249870 A GB 249870A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arc
- tips
- magnetic
- blow
- shaped
- 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
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
249,870. Metropolitan-Vickers Elec-. trical Co., Ltd., (Assignees of Austin, B. 0.). March 26, 1925, [Convention date]. Sparking, preventing.-A heavy current circuitinterrupter is provided with a magnetic blow-outconsisting of arcing tips 25, 26 and 36, 37 of U- form, one limb serving as the arcing tip proper and the other limb serving to conduct the current to the tips and to the fixed and movable contacts 27, 43 which are in metallic connection with the tips. The switch shown is pneumatically operated, and when the pressure is removed the piston 34 falls carrying with it the movable contact 43 and the lower arcing tip &c. connected with it. As the main contacts separate, their inner ends incline towards one another under the action of the spring 44 as shown, so that the arc forms at the inner ends. The upper U-shaped arc-tip encloses a magnetic core 28 which has extended polepieces 30 located outside an arc chute 45. The pole-pieces 30 support further pole-pieces 40 extending to the neighbourhood of a second magnetic core located in the lower U-shaped horn. The blow-out field thus produced draws the arc from the contacts on to the arc tips and as, under the magnetic influence, the arc is lengthened, the current path includes a greater length of the U- shaped tips and, consequently has a greater magnetic action producing a greater blow-out action.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18635A US1811451A (en) | 1925-03-26 | 1925-03-26 | Control apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB249870A true GB249870A (en) | 1926-09-30 |
Family
ID=21788977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8083/26A Expired GB249870A (en) | 1925-03-26 | 1926-03-24 | Improvements in or relating to arc-rupturing devices for electric circuit-interrupting apparatus |
Country Status (3)
Country | Link |
---|---|
US (1) | US1811451A (en) |
FR (1) | FR613413A (en) |
GB (1) | GB249870A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2442199A (en) * | 1943-12-15 | 1948-05-25 | Westinghouse Electric Corp | Circuit interrupter |
BE482710A (en) * | 1944-04-13 | |||
US2446859A (en) * | 1944-10-14 | 1948-08-10 | Gen Electric | Switch |
US2460118A (en) * | 1945-07-21 | 1949-01-25 | Gen Electric | Circuit interrupter |
US2534069A (en) * | 1947-04-09 | 1950-12-12 | Arrow Hart & Hegeman Electric | Arc extinguishing means for alternating current electric switches |
US2644875A (en) * | 1948-07-01 | 1953-07-07 | Roller Smith Corp | Air circuit breaker |
US3177325A (en) * | 1960-12-21 | 1965-04-06 | Ite Circuit Breaker Ltd | Mechanical and electrical pivot between removable arc chute and stationary contact structure |
-
1925
- 1925-03-26 US US18635A patent/US1811451A/en not_active Expired - Lifetime
-
1926
- 1926-03-24 GB GB8083/26A patent/GB249870A/en not_active Expired
- 1926-03-25 FR FR613413D patent/FR613413A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US1811451A (en) | 1931-06-23 |
FR613413A (en) | 1926-11-17 |
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