GB514967A - Improvements in and relating to electric discharge devices - Google Patents
Improvements in and relating to electric discharge devicesInfo
- Publication number
- GB514967A GB514967A GB14987/38A GB1498738A GB514967A GB 514967 A GB514967 A GB 514967A GB 14987/38 A GB14987/38 A GB 14987/38A GB 1498738 A GB1498738 A GB 1498738A GB 514967 A GB514967 A GB 514967A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- anode
- metal
- insulating
- mercury
- 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
- H01J17/16—Vessels; Containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/50—Thermionic-cathode tubes
- H01J17/52—Thermionic-cathode tubes with one cathode and one anode
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
514,967. Thermionic valves. BRITISH THOMSON-HOUSTON CO., Ltd. May 19, 1938, No. 14987. Convention date, May 22, 1937. [Class 39 (i)] In an electron discharge device of the type comprising a hot cathode, a gas or metal vapour filling and a metal envelope forming the anode, the envelope comprises two metal caps 1, 2, preferably of iron joined to each other in a known vacuum tight manner by a body 3 of ceramic or other insulating material, such as glass, of low heat conductivity. The cap 1 acts as the anode and the cap 2 is connected to one lead of the cathode 4, the other lead passing through an insulating bead 6. The supply of mercury 5 to maintain the vapour pressure is retained in the cup 2 and protected from the temperature of the cathode and anode by one or more slotted, perforated or mesh screens 7 of insulating or conducting material. The cathode may be directly or indirectly heated and may be of the '' Hull " type. If a control grid is used its potential may be supplied by a metal ring 8 seated between two halves of the insulator 3. A gaseous filling such as argon or neon may be provided , in addition to the mercury.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE514967X | 1937-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB514967A true GB514967A (en) | 1939-11-22 |
Family
ID=6548815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14987/38A Expired GB514967A (en) | 1937-05-22 | 1938-05-19 | Improvements in and relating to electric discharge devices |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB514967A (en) |
| NL (1) | NL50011C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2422945A (en) * | 1944-11-23 | 1947-06-24 | Gen Electric | Apparatus for manufacturing electron discharge devices |
| US2544104A (en) * | 1941-04-01 | 1951-03-06 | Radio Electr Soc Fr | Electric discharge valve |
-
0
- NL NL50011D patent/NL50011C/xx active
-
1938
- 1938-05-19 GB GB14987/38A patent/GB514967A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2544104A (en) * | 1941-04-01 | 1951-03-06 | Radio Electr Soc Fr | Electric discharge valve |
| US2422945A (en) * | 1944-11-23 | 1947-06-24 | Gen Electric | Apparatus for manufacturing electron discharge devices |
Also Published As
| Publication number | Publication date |
|---|---|
| NL50011C (en) |
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