GB241215A - Improvements in filament supports for vacuum tubes - Google Patents
Improvements in filament supports for vacuum tubesInfo
- Publication number
- GB241215A GB241215A GB25247/25A GB2524725A GB241215A GB 241215 A GB241215 A GB 241215A GB 25247/25 A GB25247/25 A GB 25247/25A GB 2524725 A GB2524725 A GB 2524725A GB 241215 A GB241215 A GB 241215A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- filament
- hook
- spring
- vacuum tubes
- 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
- Vessels And Coating Films For Discharge Lamps (AREA)
- Electron Sources, Ion Sources (AREA)
Abstract
241,215. British Thomson-Houston Co., Ltd., (Assignees of Mullaney, D. A.). Oct. 9, 1924, [Convention date]. Filaments, supports for. - A body 10 of fused quartz has two members 11, 12 of molybdenum or other metal embedded in it; one for anchoring to a support and the other to the filament. The embedded ends of the metal pieces are notched or jagged to improve the mechanical connection. The member 12 may be connected to a hook 14 by means of a spring 13, or the spring may be placed between the hook and the filament. To embed the metal members in the quartz insulators, a number of metal pieces are spaced in an evacuated quartz tube, which is heated at spaced intervals until it collapses upon the metal, as described in Specification 18255/03 for connecting glass and metal.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US742683A US1662032A (en) | 1924-10-09 | 1924-10-09 | Filament support for vacuum tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB241215A true GB241215A (en) | 1925-12-03 |
Family
ID=24985808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25247/25A Expired GB241215A (en) | 1924-10-09 | 1925-10-09 | Improvements in filament supports for vacuum tubes |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1662032A (en) |
| FR (1) | FR606646A (en) |
| GB (1) | GB241215A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2667594A (en) * | 1951-01-02 | 1954-01-26 | Gen Electric | Electric incandescent lamp |
| US3116992A (en) * | 1959-10-02 | 1964-01-07 | Gen Electric | Method of manufacture of lamp filament supports |
-
1924
- 1924-10-09 US US742683A patent/US1662032A/en not_active Expired - Lifetime
-
1925
- 1925-10-06 FR FR606646D patent/FR606646A/en not_active Expired
- 1925-10-09 GB GB25247/25A patent/GB241215A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR606646A (en) | 1926-06-17 |
| US1662032A (en) | 1928-03-06 |
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