GB517447A - Improvements in and relating to electric switches with arc-extinguishing means - Google Patents
Improvements in and relating to electric switches with arc-extinguishing meansInfo
- Publication number
- GB517447A GB517447A GB22481/38A GB2248138A GB517447A GB 517447 A GB517447 A GB 517447A GB 22481/38 A GB22481/38 A GB 22481/38A GB 2248138 A GB2248138 A GB 2248138A GB 517447 A GB517447 A GB 517447A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- blow
- chamber
- gas
- cooler
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7007—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein the flow is a function of the current being interrupted
-
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Circuit Breakers (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
517,447. Gas-blast switches. BRITISH THOMSON-HOUSTON CO., Ltd. July 28, 1938. Nos. 22481, 22482, 22483 and 22484. Convention dates, July 29, 1937, Aug. 5, 1937, Aug. 5, 1937, and Aug. 7, 1937. Addition to 467,809. [Class 38 (v)] The invention of the parent Specification is modified in that the tubular member communicates with the blow-out chamber only at a part or parts located intermediately of the ends of the member. Fig. 1 shows the gas-evolving tube 1, the chamber 2 housing the fixed contact, the movable contact 4, and filling member 3 which may also be of gas-evolving material. The tube 1 consists of an inner carbamide-resin tube, reinforced by an outer hard-fabric tube screwed at 9, 10 into the blow-out chamber 6. This tube is further reinforced by a tube 11 made of non- carbonizing material, such as the polymerized acrylic acid derivatives described in Specification 483,128. The evolved gas passes through openings 5 into the chamber 6 and thence through a metal gauze cooler 7 and vents 8. In another embodiment, the oval blow-out chamber 22, Fig. 2, is formed of parts 25, 26, 27 braced together by an insulating tube 29 provided with opposite threads 15, 16 The evolved gas thus passes through the openings 5 into an intermediate chamber 20 within tube 29 and then through apertures 21 and preferably through a metallic gauze cooler 14 wound or otherwise mounted on the tube 29, into the blow-out chamber 22. A second cooler 13 may be located over the vents 8. To minimise the gas pressure impact on the walls of the blow-out chamber when the latter is oval, Figs. 4, 5 (not shown), the tube 1 is surrounded by a spaced concentric cylinder for taking up the first shock, this cylinder being, e.g., of metal and apertured so that the gas passes readily therethrough. A gauze cooler is provided on the inside of the cylinder and may itself be constructed to function as the " shock " cylinder. The " shock " cylinder may be made of springy material. e.g., of steel, Fig. 6 (not shown), with overlapping longitudinal edges controlled by a compression spring to vary the opening between these edges according to the gas pressure. In a further embodiment, the oval blow-out chamber 44, Fig. 7, has the tube 1 arranged at one focus, and at the other focus the chamber is provided with a dome 46 and if desired a similar lower dome 40 in which the vents 47 are provided. A cooler 49 is provided coaxial with the dome 46 which is braced by a bolt 48.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA83783D DE675368C (en) | 1936-02-22 | 1936-04-15 | Electric pressure gas switch with self-generated extinguishing gas |
DEA79109D DE647061C (en) | 1936-02-22 | 1936-04-16 | Electric gas switch |
DEA79789D DE660025C (en) | 1936-02-22 | 1936-06-26 | Electric gas switch |
Publications (1)
Publication Number | Publication Date |
---|---|
GB517447A true GB517447A (en) | 1940-01-30 |
Family
ID=41076845
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5265/37A Expired GB467809A (en) | 1936-04-15 | 1937-02-22 | Improvements in and relating to electric switches with arcextinguishing means |
GB10515/37A Expired GB470631A (en) | 1936-04-15 | 1937-04-13 | Improvements in and relating to electric switches with self-generated arc-extinguishing blast |
GB22481/38A Expired GB517447A (en) | 1936-04-15 | 1938-07-28 | Improvements in and relating to electric switches with arc-extinguishing means |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5265/37A Expired GB467809A (en) | 1936-04-15 | 1937-02-22 | Improvements in and relating to electric switches with arcextinguishing means |
GB10515/37A Expired GB470631A (en) | 1936-04-15 | 1937-04-13 | Improvements in and relating to electric switches with self-generated arc-extinguishing blast |
Country Status (6)
Country | Link |
---|---|
US (2) | US2131000A (en) |
BE (3) | BE420151A (en) |
CH (1) | CH205650A (en) |
FR (4) | FR818173A (en) |
GB (3) | GB467809A (en) |
NL (3) | NL49945C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2840668A (en) * | 1956-02-24 | 1958-06-24 | Joslyn Mfg & Supply Co | Fuse assembly for cutouts |
US3989342A (en) * | 1973-05-18 | 1976-11-02 | International Telephone And Telegraph Corporation | Chambered arc snuffing tube for bushing assembly |
US4683734A (en) * | 1986-06-19 | 1987-08-04 | Peterson Carroll T | Locked cover for air condition responsive controller |
-
0
- BE BE429437D patent/BE429437A/xx unknown
-
1937
- 1937-02-20 NL NL81333A patent/NL49945C/xx active
- 1937-02-20 BE BE420151D patent/BE420151A/xx unknown
- 1937-02-22 GB GB5265/37A patent/GB467809A/en not_active Expired
- 1937-02-22 FR FR818173D patent/FR818173A/en not_active Expired
- 1937-04-02 FR FR820242D patent/FR820242A/en not_active Expired
- 1937-04-05 BE BE420926D patent/BE420926A/xx unknown
- 1937-04-08 NL NL82020A patent/NL48750C/xx active
- 1937-04-13 GB GB10515/37A patent/GB470631A/en not_active Expired
- 1937-06-03 US US146253A patent/US2131000A/en not_active Expired - Lifetime
-
1938
- 1938-05-04 US US205955A patent/US2152497A/en not_active Expired - Lifetime
- 1938-06-27 FR FR49606D patent/FR49606E/fr not_active Expired
- 1938-07-25 CH CH205650D patent/CH205650A/en unknown
- 1938-07-28 GB GB22481/38A patent/GB517447A/en not_active Expired
- 1938-07-29 NL NL89082A patent/NL54182C/xx active
- 1938-12-21 FR FR50097D patent/FR50097E/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR50097E (en) | 1939-11-21 |
FR818173A (en) | 1937-09-20 |
BE420151A (en) | 1937-03-31 |
NL49945C (en) | 1941-02-15 |
NL48750C (en) | 1940-06-15 |
NL54182C (en) | 1943-03-15 |
BE420926A (en) | 1937-05-31 |
FR820242A (en) | 1937-11-06 |
GB467809A (en) | 1937-06-23 |
FR49606E (en) | 1939-05-16 |
BE429437A (en) | |
GB470631A (en) | 1937-08-18 |
US2152497A (en) | 1939-03-28 |
CH205650A (en) | 1939-06-30 |
US2131000A (en) | 1938-09-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB547705A (en) | Improvements in and relating to fluid blast electric circuit breakers | |
US2223975A (en) | Electric circuit breaker | |
GB1119087A (en) | Current-limiting fuse having an impact member to sever mechanically ribbon extensionsof current-limiting elements | |
GB517447A (en) | Improvements in and relating to electric switches with arc-extinguishing means | |
GB378535A (en) | Improvements relating to electric switches or circuit breakers, fusible cut-outs andlightning arresters | |
GB408077A (en) | Improvements in electric circuit-breakers | |
US2089050A (en) | Electric circuit interrupter | |
US2421236A (en) | Electric circuit interrupter | |
GB791690A (en) | Improvements in or relating to a device for interrupting high-powered electric arcs | |
US1953788A (en) | Electric circuit breaker | |
ES357491A1 (en) | High voltage circuit interrupter | |
GB990723A (en) | Electric fuse constructions | |
GB460700A (en) | Improvements in or relating to electron valves | |
US2184841A (en) | Electric discharge tube | |
AT135172B (en) | Gas-filled electric discharge tube. | |
US736127A (en) | Mercury safety attachment for electric circuits. | |
GB507334A (en) | Improvements in or relating to fusible electric cut-outs | |
AT132265B (en) | Electron-emitting cathode that can be excited by a glow discharge. | |
DE901434C (en) | Discharge vessel for luminous discharges to be modulated | |
GB401334A (en) | Improvements in or in connection with the use of electric fuses | |
GB527702A (en) | Improvements in and relating to liquid-blast electric circuit breakers | |
GB1110258A (en) | Improvements relating to electrical spark-gaps | |
GB521861A (en) | Improvements in liquid break electric circuit breakers | |
GB443187A (en) | Improvements in and relating to electric switches having arc extinguishing chambers | |
GB701415A (en) | Improvements in electric fuses |