GB247593A - Improvements relating to electric switches - Google Patents
Improvements relating to electric switchesInfo
- Publication number
- GB247593A GB247593A GB4095/26A GB409526A GB247593A GB 247593 A GB247593 A GB 247593A GB 4095/26 A GB4095/26 A GB 4095/26A GB 409526 A GB409526 A GB 409526A GB 247593 A GB247593 A GB 247593A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- electromagnet
- armature
- moves
- contact
- 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
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Electromagnets (AREA)
- Breakers (AREA)
Abstract
247,593. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Aalborg, C.). Feb. 12, 1925, [Convention date]. Automatic circuit-breakers for direct-current traction &c. circuits have a floating lever 1 carrying the bridging contact-member 2 which is pivoted at its lower end 15 to the lower end of a bell-crank lever 18 which moves about a fixed pivot 26 and has the end of its second arm 19 pivotally attached at 32 to the core 31 of a closing electromagnet 4. The contact-member 2 is maintained closed by the attraction of an armature 44 to a. manitaining electromagnet 42 the armature being attached to a U-shaped pivoted lever 51 pivoted at 52, a link 53 connecting this lever to the contact lever 2. A straight conductor 45 passes through the air gap of electromagnet 42 and is connected in parallel with a reactor 46 in the load circuit so that on a sudden current surge the magnetic effect of the current passing through conductor 45 shifts the flex of the electromagnet 42 from the upper to the lower pair of pole faces and the attraction of the armature is then overcome by a spring 6 acting on the contact lever which moves it rapidly to the off-position in which its rear portion 34 is held against a fixed stop 33 which may be provided with a shock-absorbing spring 35. Tore-close, the closing electromagnet 4 is energized, rotating the lever 18 about its pivot 26 against the action of the spring 7. During this movement the pivot pin 15 between levers 1 and 18 moves in a clockwise direction, the lever 1 moving about the fixed stop 33 as a fulcrum so that the link 53 moves to the left bringing the armature 44 into engagement with the poles of electromagnet 42. On de-energizing the electromagnet 4 by opening its control switch 65 the spring 7 returns the lever 18 so that its rear portion nearly engages the adjustable stop 29, the contact lever during this movement pivoting about the point 13 at which it joins the link 53 and so bringing the member 2 in engagement with the fixed contacts, the lower of which may be attached thereto by a flexible lead 41. An arc chute 36 and blow-out magnet 37 are provided and a resistance 66 may be arranged across the circuit-breaker contacts.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8739A US1669546A (en) | 1925-02-12 | 1925-02-12 | Circuit interrupter |
Publications (1)
Publication Number | Publication Date |
---|---|
GB247593A true GB247593A (en) | 1927-01-06 |
Family
ID=21733376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4095/26A Expired GB247593A (en) | 1925-02-12 | 1926-02-12 | Improvements relating to electric switches |
Country Status (3)
Country | Link |
---|---|
US (1) | US1669546A (en) |
DE (1) | DE444202C (en) |
GB (1) | GB247593A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7373991B2 (en) | 2005-07-18 | 2008-05-20 | Schlumberger Technology Corporation | Swellable elastomer-based apparatus, oilfield elements comprising same, and methods of using same in oilfield applications |
US7407007B2 (en) | 2005-08-26 | 2008-08-05 | Schlumberger Technology Corporation | System and method for isolating flow in a shunt tube |
US7493947B2 (en) | 2004-12-21 | 2009-02-24 | Schlumberger Technology Corporation | Water shut off method and apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE767770C (en) * | 1938-11-26 | 1953-05-18 | Aeg | Circuit breakers, in particular oil switches with a motor drive |
-
1925
- 1925-02-12 US US8739A patent/US1669546A/en not_active Expired - Lifetime
-
1926
- 1926-01-31 DE DES73146D patent/DE444202C/en not_active Expired
- 1926-02-12 GB GB4095/26A patent/GB247593A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7493947B2 (en) | 2004-12-21 | 2009-02-24 | Schlumberger Technology Corporation | Water shut off method and apparatus |
US7373991B2 (en) | 2005-07-18 | 2008-05-20 | Schlumberger Technology Corporation | Swellable elastomer-based apparatus, oilfield elements comprising same, and methods of using same in oilfield applications |
US7407007B2 (en) | 2005-08-26 | 2008-08-05 | Schlumberger Technology Corporation | System and method for isolating flow in a shunt tube |
Also Published As
Publication number | Publication date |
---|---|
DE444202C (en) | 1927-05-18 |
US1669546A (en) | 1928-05-15 |
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