GB551432A - Improvements in and relating to heavy-current electric switches - Google Patents
Improvements in and relating to heavy-current electric switchesInfo
- Publication number
- GB551432A GB551432A GB6661/42A GB666142A GB551432A GB 551432 A GB551432 A GB 551432A GB 6661/42 A GB6661/42 A GB 6661/42A GB 666142 A GB666142 A GB 666142A GB 551432 A GB551432 A GB 551432A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- arm
- heavy
- pivot
- bracket
- 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
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
Abstract
551,432. Switches partly electromagnetic. BRITISH THOMSON-HOUSTON CO., Ltd. May 16, 1942, No. 6661. Convention date, May 20, 1941. [Class 38 (v)] A heavy-current switch, suitable for on-load, transformer-tap changing, is so arranged that the electrodynamic effect of the current-loop reinforces the contact-pressure instead of tending to throw the switch open. The arm 8 is pivoted by a pin and slot connection to a bracket 7 and operated by a member 12 separated from the pivot and contact 9 by distances A, B, respectively, such that A is greater than B. The effect of the loop on the part of the arm between 12 and the pivot is thus greater than that between 12 and the contact 9 and assists the wear-accommodating spring 13 in reinforcing the contact-pressure. In a modification, Fig. 2 (not shown), the'spring acts between a fixed abutment and a point on the arm in line with and behind the contact. The later is connected to the bracket 7 directly by a braid 10 and conductor 11.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US394328A US2283748A (en) | 1941-05-20 | 1941-05-20 | Switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB551432A true GB551432A (en) | 1943-02-22 |
Family
ID=23558472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6661/42A Expired GB551432A (en) | 1941-05-20 | 1942-05-16 | Improvements in and relating to heavy-current electric switches |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2283748A (en) |
| GB (1) | GB551432A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2559216A (en) * | 1945-04-20 | 1951-07-03 | Ite Circuit Breaker Ltd | Circuit maker |
| US2538245A (en) * | 1946-10-19 | 1951-01-16 | Edward R Mchugh | Welding electrode holder switch |
| US2601483A (en) * | 1948-03-16 | 1952-06-24 | Ite Circuit Breaker Ltd | Blow open, blow closed circuit breaker system |
| US2599242A (en) * | 1949-12-29 | 1952-06-03 | Gen Electric | Rotary circuit interrupter |
| US2664479A (en) * | 1951-09-19 | 1953-12-29 | Ite Circuit Breaker Ltd | Blow-on contact structure |
| US2911492A (en) * | 1957-02-25 | 1959-11-03 | Gen Electric | Operating mechanism for a fluid blast circuit breaker |
| US3071669A (en) * | 1959-01-13 | 1963-01-01 | Westinghouse Electric Corp | Circuit interrupters |
| DE1187292B (en) * | 1961-11-30 | 1965-02-18 | Sachsenwerk Licht & Kraft Ag | Multipole high-voltage disconnector |
| US3215803A (en) * | 1962-12-31 | 1965-11-02 | Allis Chalmers Mfg Co | Contact structure for circuit breaker |
| US3263042A (en) * | 1963-02-18 | 1966-07-26 | Westinghouse Electric Corp | Electric control device with electromagnetic contact-biasing means |
-
1941
- 1941-05-20 US US394328A patent/US2283748A/en not_active Expired - Lifetime
-
1942
- 1942-05-16 GB GB6661/42A patent/GB551432A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2283748A (en) | 1942-05-19 |
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