GB237053A - Improvements relating to thermionic valves or electron discharge tubes - Google Patents
Improvements relating to thermionic valves or electron discharge tubesInfo
- Publication number
- GB237053A GB237053A GB1235224A GB1235224A GB237053A GB 237053 A GB237053 A GB 237053A GB 1235224 A GB1235224 A GB 1235224A GB 1235224 A GB1235224 A GB 1235224A GB 237053 A GB237053 A GB 237053A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- anode
- filament
- wire
- bent
- 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
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
237,053. Mullard Radio Valve Co., Ltd., and Mullard, S. R. May 20, 1924. Vacuum tubes.-A thermionic valve has a filament-cathode 4, Fig. 3, of inverted U or semicircular shape, a grid 1 formed from a zig-zag of wire bent to inverted channel form, and an anode plate 5 also of inverted channel form. The grid wire may be lashed or welded to a central backbone 2, Fig. 7, supported at one end only. The anode is stiffened by channels near the bent edges, and one of these channels has a gap to accommodate a single supporting wire 8 to which the anode is spot-welded. In order more completely to surround the hottest part of the filament, the middle part 15, Fig. 10, of the flat sides of the anode 5 may be bent inwards after slitting; the grid may be similarly shaped. Alternatively, the central portion of the grid and anode may be prolonged and bent under the filament as shown at 13 in Fig. 7. Both the cold electrodes may completely encircle the middle part of the filament. The wire zig-zag from which the grid is formed may have square or rounded corners. Specification 191,767 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1235224A GB237053A (en) | 1924-05-20 | 1924-05-20 | Improvements relating to thermionic valves or electron discharge tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1235224A GB237053A (en) | 1924-05-20 | 1924-05-20 | Improvements relating to thermionic valves or electron discharge tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB237053A true GB237053A (en) | 1925-07-23 |
Family
ID=10002928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1235224A Expired GB237053A (en) | 1924-05-20 | 1924-05-20 | Improvements relating to thermionic valves or electron discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB237053A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2503806A (en) * | 1946-03-21 | 1950-04-11 | Hivac Ltd | Thermionic valve element assembly |
| US2797349A (en) * | 1951-10-31 | 1957-06-25 | Pensak Louis | Ultra high frequency electron discharge devices |
-
1924
- 1924-05-20 GB GB1235224A patent/GB237053A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2503806A (en) * | 1946-03-21 | 1950-04-11 | Hivac Ltd | Thermionic valve element assembly |
| US2797349A (en) * | 1951-10-31 | 1957-06-25 | Pensak Louis | Ultra high frequency electron discharge devices |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB237053A (en) | Improvements relating to thermionic valves or electron discharge tubes | |
| GB543403A (en) | Improvements in or relating to the manufacture of electron discharge devices | |
| GB321553A (en) | Improvements relating to electrode construction for electron discharge tubes | |
| GB500239A (en) | Improvements in or relating to electric discharge tubes comprising cantilever springs | |
| GB477787A (en) | Electric discharge tube | |
| GB476394A (en) | Improvements in grid electrodes of thermionic valves | |
| GB236692A (en) | Improvements relating to thermionic valves or electron discharge tubes | |
| GB267198A (en) | Improvements in or relating to wireless receiving apparatus | |
| GB248648A (en) | Improvements in or relating to electrodes for thermionic valves | |
| GB242662A (en) | Improvements in electrodes for electron discharge devices | |
| GB214455A (en) | Improvements in electric discharge tubes | |
| GB241216A (en) | Improvements in and relating to electron discharge apparatus | |
| GB251073A (en) | Improvements in or relating to thermionic valves | |
| GB531200A (en) | Improvements in or relating to electron discharge devices | |
| GB690420A (en) | Improvements in or relating to thermionic valves | |
| GB237680A (en) | Improvements relating to thermionic valves or electron discharge tubes | |
| GB282150A (en) | Improvements in or relating to thermionic valves | |
| GB642600A (en) | Improvements in or relating to electron discharge apparatus | |
| GB542971A (en) | Improvements in electron discharge devices | |
| GB253426A (en) | Improvements in or connected with vacuum tubes, or wireless valves for use with wireless apparatus | |
| GB307558A (en) | Improvements in thermionic valves | |
| GB222124A (en) | Improvements in electron discharge devices | |
| GB445738A (en) | Improvements in and relating to electron discharge devices | |
| GB301855A (en) | Improvements in or relating to electronic discharge bulbs | |
| GB297886A (en) | Improvements in or relating to thermionic valves |