GB268329A - Improvements in and relating to electric circuit makers and interrupters - Google Patents
Improvements in and relating to electric circuit makers and interruptersInfo
- Publication number
- GB268329A GB268329A GB7313/27A GB731327A GB268329A GB 268329 A GB268329 A GB 268329A GB 7313/27 A GB7313/27 A GB 7313/27A GB 731327 A GB731327 A GB 731327A GB 268329 A GB268329 A GB 268329A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- contact
- latching
- engage
- spring
- 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
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
- H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
- H01H77/104—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement with a stable blow-off position
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
268,329. British Thomson-Houston Co., Ltd., (Assignees of Jones B. W., and Chapman, C. H.). March 26, 1926, [Convention date]. Electromagnetic switches; contacts; switches, latching and unlatching.-In order to prevent the contacts of electromagnetic contactors from welding together when they re-engage after they have separated due to the repulsive action between them caused by abnormal currents therein while the contactor is closed, an automatic latching arrangement for the movable contact is provided which can only be released manually. As shown in Fig. 2, if the spring- pressed contact 11 is forced from the fixed contact 10 by the electrodynamic action of the current passing through the contacts, a spring- pressed detent 24 slips behind the extension 25 holding the contact 11 away from the fixed contact 10 as shown in Fig. 3. Thus the contacts cannot immediately re-engage, while they are heated by the arcing between them, on reduction of current effected by the magnetic closure, and the latching plunger has to be disengaged by pressure of the knob 28 before the circuit can again be closed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US97734A US1724840A (en) | 1926-03-26 | 1926-03-26 | Circuit maker and interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB268329A true GB268329A (en) | 1927-07-14 |
Family
ID=22264853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7313/27A Expired GB268329A (en) | 1926-03-26 | 1927-03-16 | Improvements in and relating to electric circuit makers and interrupters |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1724840A (en) |
| BE (1) | BE340864A (en) |
| FR (1) | FR630059A (en) |
| GB (1) | GB268329A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2515596A (en) * | 1946-10-16 | 1950-07-18 | Electric Controller & Mfg Co | Electric switch |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2424308A (en) * | 1942-09-15 | 1947-07-22 | Westinghouse Electric Corp | Contactor |
| US2788421A (en) * | 1953-05-12 | 1957-04-09 | Westinghouse Electric Corp | Circuit breaker contact structure |
| US3068379A (en) * | 1957-04-11 | 1962-12-11 | Fed Pacific Electric Co | Circuit protective apparatus |
| US2944129A (en) * | 1957-11-12 | 1960-07-05 | Fed Pacific Electric Co | Circuit breakers |
| NL112822C (en) * | 1958-07-30 | |||
| US3012118A (en) * | 1958-10-29 | 1961-12-05 | Ite Circuit Breaker Ltd | Current limiting circuit breaker |
| US3813619A (en) * | 1962-05-18 | 1974-05-28 | Gen Electric | Current-limiting circuit breaker |
| US3284601A (en) * | 1963-09-10 | 1966-11-08 | Galion Jeffrey Mfg Co | Electrical contactor with removable arc chute |
| US4259651A (en) * | 1978-10-16 | 1981-03-31 | Westinghouse Electric Corp. | Current limiting circuit interrupter with improved operating mechanism |
| US4339642A (en) * | 1981-01-19 | 1982-07-13 | General Electric Company | Current switching member for circuit breakers |
-
0
- BE BE340864D patent/BE340864A/xx unknown
-
1926
- 1926-03-26 US US97734A patent/US1724840A/en not_active Expired - Lifetime
-
1927
- 1927-03-02 FR FR630059D patent/FR630059A/en not_active Expired
- 1927-03-16 GB GB7313/27A patent/GB268329A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2515596A (en) * | 1946-10-16 | 1950-07-18 | Electric Controller & Mfg Co | Electric switch |
Also Published As
| Publication number | Publication date |
|---|---|
| US1724840A (en) | 1929-08-13 |
| FR630059A (en) | 1927-11-23 |
| BE340864A (en) |
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