GB450971A - Improvements in and relating to electric discharge devices - Google Patents
Improvements in and relating to electric discharge devicesInfo
- Publication number
- GB450971A GB450971A GB250935A GB250935A GB450971A GB 450971 A GB450971 A GB 450971A GB 250935 A GB250935 A GB 250935A GB 250935 A GB250935 A GB 250935A GB 450971 A GB450971 A GB 450971A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gauze
- cathode
- plates
- welded
- discharge devices
- 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
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
- H01J17/06—Cathodes
Landscapes
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Discharge Lamp (AREA)
Abstract
450,971. Thermionic cathodes. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and KNIGHT, H. DE B., 108, Eastlands Road, Rugby. Jan. 25, 1935, No. 2509. [Class 39 (i)] A cathode of the directly or indirectly heated type and particularly for use in gas or vapour filled discharge devices consists of gauze sheets welded on to the sides of plates, the gauze receiving the emissive material such as a mixture of barium and strontium carbonates, which is subsequently reduced. As shown a number of plates 3 are welded together to form a cylinder with radial vanes and central tube 2, which receives the heater 1 ; the gauze sheets are welded to some or all sides of the plates 3. Heat shields 4, 5 surround the cathode. According to the Provisional Specification the cathode may be made of rolled gauze impregnated with emissive material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB250935A GB450971A (en) | 1935-01-25 | 1935-01-25 | Improvements in and relating to electric discharge devices |
| DEA6122D DE879129C (en) | 1935-01-25 | 1936-01-26 | Vapor or gas-filled discharge vessel with a directly or indirectly heated, strip-shaped cathode provided with an emission layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB250935A GB450971A (en) | 1935-01-25 | 1935-01-25 | Improvements in and relating to electric discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB450971A true GB450971A (en) | 1936-07-27 |
Family
ID=9740802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB250935A Expired GB450971A (en) | 1935-01-25 | 1935-01-25 | Improvements in and relating to electric discharge devices |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE879129C (en) |
| GB (1) | GB450971A (en) |
-
1935
- 1935-01-25 GB GB250935A patent/GB450971A/en not_active Expired
-
1936
- 1936-01-26 DE DEA6122D patent/DE879129C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE879129C (en) | 1953-06-11 |
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