GB439000A - Improvements in or connected with electron discharge devices - Google Patents
Improvements in or connected with electron discharge devicesInfo
- Publication number
- GB439000A GB439000A GB337/35A GB33735A GB439000A GB 439000 A GB439000 A GB 439000A GB 337/35 A GB337/35 A GB 337/35A GB 33735 A GB33735 A GB 33735A GB 439000 A GB439000 A GB 439000A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- members
- standard
- bimetallic
- consist
- 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
Landscapes
- Solid Thermionic Cathode (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Springs (AREA)
Abstract
439,000. Springs. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London.-(Assignees of Ronci, V. L. ; 4009, Foster Avenue, Brooklyn, New York, U.S.A.) Jan. 4, 1935, No. 337. Convention date, May 3, 1934. [Class 108 (iii)] [See also Group XL] Bimetallic or other members are provided for relieving the stress in a spring which tensions the cathode filament structure of a thermionic valve, and is under abnormal heating conditions during manufacture of the valve. As shown in Fig. 2, the bimetallic members consist of (a) a spreader 31 resting on an insulator 30 on a tungsten spring 29 and carrying hooks 32 supporting the bights 24 of the filament and (b) two dished members 27 connected together by links 34 and supported on a collar 26 on a standard 17. The members 31, 27 consist of an outer layer of the alloy known by the Registered Trade Mark " Invar," and an inner layer of nickel or nickel alloy. When the spring is heated abnormally the parts 31, 27 flatten out and allow the spring to expand. In a modification, Fig. 4, the upper compensating element consists of a flanged disc 37 with a depressed central portion 38 sliding on the standard 17. A metal cylinder 39, carried by the disc 37, acts as a heat shield for the spring 29.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US723685A US2082120A (en) | 1934-05-03 | 1934-05-03 | Electron discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB439000A true GB439000A (en) | 1935-11-27 |
Family
ID=24907257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB337/35A Expired GB439000A (en) | 1934-05-03 | 1935-01-04 | Improvements in or connected with electron discharge devices |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2082120A (en) |
| FR (1) | FR786902A (en) |
| GB (1) | GB439000A (en) |
| NL (1) | NL41316C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL49681C (en) * | 1937-04-19 | |||
| US2570121A (en) * | 1949-05-26 | 1951-10-02 | Rca Corp | Nondeforming laminated electrode support and electron discharge device |
| US2599395A (en) * | 1950-01-25 | 1952-06-03 | Collins Radio Co | Filament temperature compensating device |
| US2632129A (en) * | 1951-07-09 | 1953-03-17 | Westinghouse Electric Corp | Filament support structure for electron discharge devices |
| US3351801A (en) * | 1965-02-16 | 1967-11-07 | John F Richter | Cathode cylinder having a heater member supported by a plurality of flexible metal bands |
-
0
- FR FR786902D patent/FR786902A/fr not_active Expired
- NL NL41316D patent/NL41316C/xx active
-
1934
- 1934-05-03 US US723685A patent/US2082120A/en not_active Expired - Lifetime
-
1935
- 1935-01-04 GB GB337/35A patent/GB439000A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL41316C (en) | |
| US2082120A (en) | 1937-06-01 |
| FR786902A (en) | 1935-09-12 |
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