GB232201A - Improvements in or relating to incandescent cathodes for discharge tubes - Google Patents
Improvements in or relating to incandescent cathodes for discharge tubesInfo
- Publication number
- GB232201A GB232201A GB8586/25A GB858625A GB232201A GB 232201 A GB232201 A GB 232201A GB 8586/25 A GB8586/25 A GB 8586/25A GB 858625 A GB858625 A GB 858625A GB 232201 A GB232201 A GB 232201A
- Authority
- GB
- United Kingdom
- Prior art keywords
- supports
- filament
- wire
- hoods
- cathode
- 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
- 239000011521 glass Substances 0.000 abstract 2
- 239000010453 quartz Substances 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000000969 carrier Substances 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 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
Abstract
232,201. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. April 8; 1924, [Convention date]. Vacuum tubes.-A cathode having a number of filament portions connected in parallel and mounted on two or more carriers is provided with one or more metal supports connected with intermediate points of the filament at the same potential. As shown in Fig. 1, V-shaped filaments 63 are mounted on two supports 60, 62, and the tops of the filament are connected by a support 61 secured by a wire 65 to a quartz tube- 64 spacing the supports 60, 62. In the arrangement shown in Fig. 2, a filament 5 is wound helically around supports 6 - - 9; the supports 6, 7 are mounted on hoods 15, 16 which are sealed into glass tubes 17, 18 and connected with leads, and the supports 8, 9 are joined at the ends by members 10, 11, the member 11 being mounted on a support secured to a hood 12, and the member 10 engaging with a quartz rod 14 spacing the supports 6, 7. The supports 8, 9 are thus connected with parts of the filament at the same potential. The wire may be welded to the supports or may be wound in grooves. The Specification as open to inspection under Sect. 91 (3) (a) comprises also another arrangement in which two hair-pin filaments are mounted on U-shaped supports, and the loops are connected by a wire. Such a cathode may be mounted with a grid in an envelope consisting of a glass tube and a cylindrical anode sealed thereto. The anode and the hoods may be of chrome-iron. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL232201X | 1924-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB232201A true GB232201A (en) | 1925-12-31 |
Family
ID=19780039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8586/25A Expired GB232201A (en) | 1924-04-08 | 1925-03-31 | Improvements in or relating to incandescent cathodes for discharge tubes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1852739A (en) |
| FR (1) | FR595204A (en) |
| GB (1) | GB232201A (en) |
| NL (1) | NL16653C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2967971A (en) * | 1957-08-14 | 1961-01-10 | Hughes Aircraft Co | Storage tube with improved flood gun |
| US3513348A (en) * | 1967-12-07 | 1970-05-19 | Machlett Lab Inc | Filament structure having arc suppressing means |
-
0
- NL NL16653D patent/NL16653C/xx active
-
1925
- 1925-03-16 FR FR595204D patent/FR595204A/en not_active Expired
- 1925-03-30 US US19351A patent/US1852739A/en not_active Expired - Lifetime
- 1925-03-31 GB GB8586/25A patent/GB232201A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR595204A (en) | 1925-09-29 |
| NL16653C (en) | |
| US1852739A (en) | 1932-04-05 |
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