GB229156A - Improvements in and relating to relief devices for electric switches or the like - Google Patents
Improvements in and relating to relief devices for electric switches or the likeInfo
- Publication number
- GB229156A GB229156A GB1192924A GB1192924A GB229156A GB 229156 A GB229156 A GB 229156A GB 1192924 A GB1192924 A GB 1192924A GB 1192924 A GB1192924 A GB 1192924A GB 229156 A GB229156 A GB 229156A
- Authority
- GB
- United Kingdom
- Prior art keywords
- washers
- hot gases
- relating
- pass
- electric switches
- 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
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
- H01H9/042—Explosion-proof cases
- H01H9/043—Explosion-proof cases with pressure-relief devices
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
229,156. British Thomson-Houston Co., Ltd., and Hanna, C. T. May 14, 1924. Explosions, preventing in connection with electric apparatus.-The casings of switches, mining controllers &c. are fitted with a device which allows the hot gases to escape should there be an explosion within the casing but cools them down so that no flame can pass through to the outer atmosphere. The device comprises two or more groups of spaced washers A arranged so that the hot gases pass through them in series. Fig. 1 shows two groups separated by a plate B which drives the gases into contact with the cooling metallic enclosure E. A rod C prevents undue pressure on the upper group of washers. The enclosure E has three or more projections G, Fig. 3, which serve to locate the washers A and also to divide the hot gases into sections.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1192924A GB229156A (en) | 1924-05-14 | 1924-05-14 | Improvements in and relating to relief devices for electric switches or the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1192924A GB229156A (en) | 1924-05-14 | 1924-05-14 | Improvements in and relating to relief devices for electric switches or the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB229156A true GB229156A (en) | 1925-02-19 |
Family
ID=9995225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1192924A Expired GB229156A (en) | 1924-05-14 | 1924-05-14 | Improvements in and relating to relief devices for electric switches or the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB229156A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE761170C (en) * | 1941-04-01 | 1951-08-09 | Bosch Gmbh Robert | Housing for firedamp protected, especially electrical devices and machines |
-
1924
- 1924-05-14 GB GB1192924A patent/GB229156A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE761170C (en) * | 1941-04-01 | 1951-08-09 | Bosch Gmbh Robert | Housing for firedamp protected, especially electrical devices and machines |
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