GB500239A - Improvements in or relating to electric discharge tubes comprising cantilever springs - Google Patents
Improvements in or relating to electric discharge tubes comprising cantilever springsInfo
- Publication number
- GB500239A GB500239A GB2650/38A GB265038A GB500239A GB 500239 A GB500239 A GB 500239A GB 2650/38 A GB2650/38 A GB 2650/38A GB 265038 A GB265038 A GB 265038A GB 500239 A GB500239 A GB 500239A
- Authority
- GB
- United Kingdom
- Prior art keywords
- springs
- mica
- clamped
- clamp
- strips
- 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
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0002—Construction arrangements of electrode systems
Landscapes
- Electron Tubes For Measurement (AREA)
Abstract
500,239. Thermionic valves ; springs. M-O VALVE CO., Ltd., and WARREN, G. W. Jan. 27, 1938, No. 2650. [Class 39 (i)] [Also in Group XXXII] In electric discharge devices fitted with one or more cantilever springs, such as thermionic valves in which such springs are used for tensioning the filamentary cathodes, the ends of the springs are clamped between strips of flexible insulating material such as mica, by means of a metal clamp. Fig. 1 shows one arrangement in which the ends of the springs 1, of molybdenum, are clamped between mica strips 2 by a clamp 4 of sheet, metal such as nickel bent tu U-shape. Spacing of the springs is obtained by fitting the ends into slots in an intermediate mica strip 3, or, alternatively, pressing the sides of the clamp and mica strips together between the springs as in Fig. 2 (not shown). In the complete valve assembly shown in Fig. 6, the clamp 4 has lugs welded to the anode supports 11 and the grid supports 8 are located by wires 12 clamped between the mica strips 2 between which the filament tensioning springs 1 are clamped. Specification 436,819 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2650/38A GB500239A (en) | 1938-01-27 | 1938-01-27 | Improvements in or relating to electric discharge tubes comprising cantilever springs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2650/38A GB500239A (en) | 1938-01-27 | 1938-01-27 | Improvements in or relating to electric discharge tubes comprising cantilever springs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB500239A true GB500239A (en) | 1939-02-06 |
Family
ID=9743309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2650/38A Expired GB500239A (en) | 1938-01-27 | 1938-01-27 | Improvements in or relating to electric discharge tubes comprising cantilever springs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB500239A (en) |
-
1938
- 1938-01-27 GB GB2650/38A patent/GB500239A/en not_active Expired
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