GB541629A - Improvements in electrode mounting arrangements for electron discharge devices - Google Patents
Improvements in electrode mounting arrangements for electron discharge devicesInfo
- Publication number
- GB541629A GB541629A GB9548/40A GB954840A GB541629A GB 541629 A GB541629 A GB 541629A GB 9548/40 A GB9548/40 A GB 9548/40A GB 954840 A GB954840 A GB 954840A GB 541629 A GB541629 A GB 541629A
- Authority
- GB
- United Kingdom
- Prior art keywords
- secured
- filaments
- disc
- envelope
- tension
- 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
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/15—Cathodes heated directly by an electric current
- H01J1/18—Supports; Vibration-damping arrangements
Abstract
541,629. Thermionic valves. BRITISH THOMSON-HOUSTON CO., Ltd. May 31, 1940, No. 9548. Convention date, May 31, 1939. [Class 39 (i)] In high-frequency power valves, the cathode consists of a number of filaments 13, arranged in parallel around a cylinder. They are secured at their upper ends to fixed supporting leads 33, which are spaced in insulating discs 35, 36. The lower ends are secured to lugs 42 on a disc 41. A rod 44 secured to the disc 41, moves freely in the discs 35, 36 and is acted on by a compression spring bearing on a stop piece 46 to maintain the filaments in tension. A housing formed in two parts 49, 50 encloses the spring and the two parts are designed to abut when the spring is compressed to a degree representing the tension of the filaments in the cold state. The invention is described in connection with a valve, the envelope of which is formed by the anode to which is sealed a glass part carrying re-entrant press for the cathode leads. A base cap, carrying the terminals, consisting of a disc of insulating material is secured to the envelope by an angle ring cemented in position. The Specification as open to inspection under Sect. 91 describes also a mount for the grid. This subject-matter does not appear in the Specification as accepted, but is described in Specification 541,645.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US276587A US2175880A (en) | 1939-05-31 | 1939-05-31 | Electrode mounting arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB541629A true GB541629A (en) | 1941-12-04 |
Family
ID=23057257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9548/40A Expired GB541629A (en) | 1939-05-31 | 1940-05-31 | Improvements in electrode mounting arrangements for electron discharge devices |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2175880A (en) |
| GB (1) | GB541629A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2995673A (en) * | 1958-11-07 | 1961-08-08 | Rca Corp | Self-shielded electron tube |
-
1939
- 1939-05-31 US US276587A patent/US2175880A/en not_active Expired - Lifetime
-
1940
- 1940-05-31 GB GB9548/40A patent/GB541629A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2175880A (en) | 1939-10-10 |
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