GB176898A - Improvements in and relating to thermionic valves for wireless telegraphy and telephony - Google Patents
Improvements in and relating to thermionic valves for wireless telegraphy and telephonyInfo
- Publication number
- GB176898A GB176898A GB3546420A GB3546420A GB176898A GB 176898 A GB176898 A GB 176898A GB 3546420 A GB3546420 A GB 3546420A GB 3546420 A GB3546420 A GB 3546420A GB 176898 A GB176898 A GB 176898A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- filament
- insulating
- supports
- corrugations
- 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
- 238000010276 construction Methods 0.000 abstract 2
- 239000004020 conductor Substances 0.000 abstract 1
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
- Electron Sources, Ion Sources (AREA)
Abstract
176,898. Preston, L. G., Hodgson, B., and Goldup, T. E. Dec. 16, 1920. Vacuum tubes.-A structure for supporting a grid and cathode filament, so that they can be relatively adjusted before mounting in a bulb, comprises insulating pieces with. corrugations. In one construction, supports S, Fig. 1, for a grid G are secured by means of the corrugations to the insulating pieces A, B which support the ends of the filament F and a spring engaging its apex. In an alternative construction, the grid supports S, Fig. 4, are lashed or otherwise attached to an insulating piece CD of the form shown, having secured within it a tube or guide traversed by the tensioning device RH. Fig. 4 also shows an alternative arrangement for the other end of the supporting structure, in which the filament conductors are lashed on opposite sides and in different corrugations of the insulating tube T, and insulated from the lashing where necessary. Attached to the insulating tube T is an insulating piece R with corrugations for securing the grid supports. The structure may be supported from the insulating pieces or the grid or filament supports. In the arrangement shown in Fig. 4, the tube T is fused to the envelope and the other end is held by springing the grid supports into a tubular extension of the envelope. By cutting a flange M of the envelope, access may be had to the grid and filament. The anode P may be supported by spring arms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3546420A GB176898A (en) | 1920-12-16 | 1920-12-16 | Improvements in and relating to thermionic valves for wireless telegraphy and telephony |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3546420A GB176898A (en) | 1920-12-16 | 1920-12-16 | Improvements in and relating to thermionic valves for wireless telegraphy and telephony |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB176898A true GB176898A (en) | 1922-03-16 |
Family
ID=10378010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3546420A Expired GB176898A (en) | 1920-12-16 | 1920-12-16 | Improvements in and relating to thermionic valves for wireless telegraphy and telephony |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB176898A (en) |
-
1920
- 1920-12-16 GB GB3546420A patent/GB176898A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB176898A (en) | Improvements in and relating to thermionic valves for wireless telegraphy and telephony | |
| US1766460A (en) | Electron-discharge device | |
| GB214455A (en) | Improvements in electric discharge tubes | |
| GB358649A (en) | Improvements relating to electron discharge tubes of thermionic valves | |
| US1866358A (en) | Electrode support | |
| US1879514A (en) | Means for supporting the electrodes of thermionic devices | |
| US2151816A (en) | Mount for electron discharge devices | |
| US2151522A (en) | Incandescent lamp with means to reduce bulb blackening | |
| US2022984A (en) | Mount for electron discharge devices | |
| GB353905A (en) | Improvements relating to electron discharge tubes or thermionic valves | |
| US1660153A (en) | Mount for electron-emission devices and method of making | |
| GB220747A (en) | Improvements in electric tube devices having coiled filaments | |
| GB298715A (en) | Improvements in electrode structures for thermionic valves | |
| GB245574A (en) | Improvements in or relating to valve holders for wireless receiving sets | |
| GB225293A (en) | Improvements in and relating to thermionic vacuum tubes or valves | |
| US1560911A (en) | Vacuum tube | |
| GB489309A (en) | Improvements in or relating to thermionic valves | |
| GB332071A (en) | Improvements in thermionic valves | |
| GB729577A (en) | Filamentary cathode supporting arrangements in electron discharge devices | |
| GB251406A (en) | Improvements in and relating to thermionic valves | |
| GB173363A (en) | Improvements in vacuum or low-pressure bulb electron-discharge apparatus | |
| US1922672A (en) | Discharge tube | |
| GB385340A (en) | Improvements relating to vacuum electric tube devices | |
| GB181812A (en) | Improvements in or relating to ionic or vacuum tubes or relays | |
| GB253668A (en) | Improved method of and means for mounting filaments in thermionic valves and the like |