GB227320A - Improvements in and relating to electric switches - Google Patents
Improvements in and relating to electric switchesInfo
- Publication number
- GB227320A GB227320A GB8337/24A GB833724A GB227320A GB 227320 A GB227320 A GB 227320A GB 8337/24 A GB8337/24 A GB 8337/24A GB 833724 A GB833724 A GB 833724A GB 227320 A GB227320 A GB 227320A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- rod
- arc
- pivoted
- piston
- 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
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
Landscapes
- Mechanisms For Operating Contacts (AREA)
- Circuit Breakers (AREA)
Abstract
227,320. British Thomson-Houston Co., Ltd., (General Electric Co.). April 2, 1924. Oil switches; fluid actuation. - A fluid-break switch comprises a piston connected on either side with the mechanism for operating the movable contact and arranged to be. affected by the pressure generated by the action of the arc on the fluid on separation of the contacts to accelerate the separation thereof. A tank 2 containing an insulating liquid is secured to a casing 1 wherein an opening 8 is connected to an oilseparating and pressure-relieving device. The movable contacts are carried on an insulating rod 14 guided in a frame 15 and fastened into a cap 17 to which are pivoted the two arms 19 of a bifurcated actuating lever 20 by means of a horizontal pin 18. This lever is fulcrummed at 21 on a pair of links 22 pivoted at 23 and connected by a bridge 24, through which extends loosely a rod 25 pivoted to lever 20 and guiding a spring 26. A link 27 is pivoted to each arm 19 of the lever 20 and to the casing to cause the rod 14 to move in a straight line and each arm has a flange. 28 loosely receiving a rod 29 with a head 30. Each rod 29 is threaded into a cross-bar 32 and abuts the cover 6, which supports a cylindrical bracket 33 carrying a flanged button 34 and felt discs 35 which are adjustably compressed by the crossbar 32 against the button 34. The piston 39 slides in an opening 38 and is connected on one side to lever 20 bv a link 40 and on the other side to an operating lever 41 by a link 42. The lever 41 may be operated by a solenoid or centrifugal device, or manually by means of a rod inserted in a socket 44 therein. Means are provided for retaining the toggle 41, 42 in an underset position when the switch is closed, subject to manual or automatic tripping. To close, the lever 41 is operated, moving the piston 39 and lever 20, and the movement is cushioned by the pin 18 striking the resiliently-retained button 34. When the switch is tripped open, the parts move under gravity and are accelerated by spring 26, the gas-pressure due to the arc acting on the piston 39 to assist the movement. At the full open position, the flanges 28 strike the heads 30 of the rods 29 and the movement is cushioned by the felt discs 35. The invention is applicable to any switch opening in an arc-extinguishing fluid, or in an arc-extinguishing gas not dissociated by the. arc. the pressure in the latter case being due to the expansion resulting from an increase in temperature, Specification 26694/01 is referred to.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US684669A US1569683A (en) | 1924-01-05 | 1924-01-05 | Electric switch |
US67137A US1745122A (en) | 1924-01-05 | 1925-11-05 | Buffer for electric switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB227320A true GB227320A (en) | 1925-01-15 |
Family
ID=26747520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8337/24A Expired GB227320A (en) | 1924-01-05 | 1924-04-02 | Improvements in and relating to electric switches |
Country Status (4)
Country | Link |
---|---|
US (1) | US1745122A (en) |
BE (1) | BE227320A (en) |
FR (1) | FR592693A (en) |
GB (1) | GB227320A (en) |
-
0
- BE BE227320D patent/BE227320A/xx unknown
-
1924
- 1924-04-02 GB GB8337/24A patent/GB227320A/en not_active Expired
-
1925
- 1925-01-05 FR FR592693D patent/FR592693A/en not_active Expired
- 1925-11-05 US US67137A patent/US1745122A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US1745122A (en) | 1930-01-28 |
FR592693A (en) | 1925-08-06 |
BE227320A (en) |
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