GB479953A - Improvements relating to electric circuit breakers - Google Patents
Improvements relating to electric circuit breakersInfo
- Publication number
- GB479953A GB479953A GB25164/36A GB2516436A GB479953A GB 479953 A GB479953 A GB 479953A GB 25164/36 A GB25164/36 A GB 25164/36A GB 2516436 A GB2516436 A GB 2516436A GB 479953 A GB479953 A GB 479953A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- trip
- flywheel
- rack
- operating
- 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
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
479,953. Automatic circuit-breakers. DEWAR, G., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 15, 1936, No. 25164. [Class 38 (v)] To avoid hesitation or reversal of contactmovement by electromagnetic forces during closure of a circuit-breaker, the movement of the operating-lever of which is communicated to the actuating lever through trip-free mechanism, the operating-lever is connected with a flywheel which is thereby caused to rotate during the closing-operation in such a manner that if the speed of movement of the operating-lover is reduced, the continued rotation of the flywheel due to its inertia will release the trip-free mechanism. The operating-lever 7 is adapted to be coupled to the actuating-lever 5 by means of a catch 8 on the latter engaging a roller 9 on a trip-lever 10 pivoted at 11 to lever 7. Also pivoted at 11 is a link 12 which is connected to a rack-bar 13 in engagement with a pinion 18, which has a spring cushioning connection 17 with a flywheel 15 carried on shaft 16. The rack is held up to the pinion by a roller 19 carried by a casing 21 which can swing about axis 16. When 7 is lowered to close the breaker, a part 22 thereon engages and drives the link 12 and rack, so rotating the flywheel clockwise. If during this movement, 7 is unduly checked, the inertia of the flywheel causes the rack to move downwards relatively to lever 7, so that the projection 14 on link 12 engages and deflects the triplever 10. If closure proceeds normally, lever 7 reaches position 71, in which position projection 14 engages an adjustable stop 26 to prevent undesired tripping. The lever 10 can, however, be deflected by the trip-lever 29 of a trip-coil 27. The breaker may alternatively be electrically closed, and may be oil-immersed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB25164/36A GB479953A (en) | 1936-09-15 | 1936-09-15 | Improvements relating to electric circuit breakers |
| US160691A US2134549A (en) | 1936-09-15 | 1937-08-24 | Electric circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB25164/36A GB479953A (en) | 1936-09-15 | 1936-09-15 | Improvements relating to electric circuit breakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB479953A true GB479953A (en) | 1938-02-15 |
Family
ID=10223264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25164/36A Expired GB479953A (en) | 1936-09-15 | 1936-09-15 | Improvements relating to electric circuit breakers |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2134549A (en) |
| GB (1) | GB479953A (en) |
-
1936
- 1936-09-15 GB GB25164/36A patent/GB479953A/en not_active Expired
-
1937
- 1937-08-24 US US160691A patent/US2134549A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2134549A (en) | 1938-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB448674A (en) | Improvements in and relating to automatic reclosing circuit breakers | |
| US2053961A (en) | Circuit breaker mechanism | |
| US2298143A (en) | Reclosing circuit interrupter | |
| GB1390987A (en) | Electrical circuit breakers | |
| GB555021A (en) | Improvements in or relating to electric circuit breakers | |
| US1999410A (en) | Automatic circuit breaker | |
| US2696536A (en) | Control arrangement for circuit breakers | |
| GB479953A (en) | Improvements relating to electric circuit breakers | |
| GB1519230A (en) | Overcurrent detection devices | |
| GB571997A (en) | Improvements in or relating to electric circuit breakers provided with overload release devices | |
| GB545482A (en) | Automatic reclosing circuit breaker operating mechanism | |
| US3384846A (en) | Current limiting circuit breaker mechanism | |
| GB461699A (en) | Improvements in and relating to electric liquid-blast circuit breakers | |
| GB582643A (en) | Improvements in or relating to spring operating-mechanism for electric switchgear | |
| US1480306A (en) | Electrical-switching apparatus | |
| GB269496A (en) | Retarded overload relay or tripping device for electric circuit breakers and the like | |
| GB484861A (en) | Improvements in and relating to automatic reclosing mechanism for electric switches and the like | |
| US2078657A (en) | Automatic reclosing circuit interrupter | |
| US3213322A (en) | Electric brake for circuit interrupters | |
| US1779848A (en) | Circuit breaker | |
| USRE19753E (en) | Automatic cibctjit breaker | |
| GB769005A (en) | Improvements in and relating to tripping devices for electrical circuit breakers | |
| GB763747A (en) | Electric circuit breaker operating mechanism | |
| GB809187A (en) | Improvements in or relating to automatic reclosing electric circuit interrupters | |
| GB558878A (en) | Improvements relating to electric circuit breakers having trip mechanism |