GB764160A - Wire electrode for electric vapour and/or gaseous discharge lamp - Google Patents
Wire electrode for electric vapour and/or gaseous discharge lampInfo
- Publication number
- GB764160A GB764160A GB4530/55A GB453055A GB764160A GB 764160 A GB764160 A GB 764160A GB 4530/55 A GB4530/55 A GB 4530/55A GB 453055 A GB453055 A GB 453055A GB 764160 A GB764160 A GB 764160A
- Authority
- GB
- United Kingdom
- Prior art keywords
- torsion
- wire
- core
- fibres
- feb
- 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
- 239000011162 core material Substances 0.000 abstract 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 1
- 239000010406 cathode material Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 239000011733 molybdenum Substances 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12333—Helical or with helical component
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Discharge Lamp (AREA)
Abstract
764,160. Cathode materials and processing. PATENT-TREUHAND-GES. FUR ELEKTRISCHE GLUHLAMPEN. Feb. 15, 1955 [Feb. 26, 1954], No. 4530/55. Class 39(1). The adherence of the electron-emitting coating on a core made by working sintered metallic powders so as to produce a wire having a fibre structure is increased by first distorting the core by torsion so that cracks are left between the fibres ; the final angle of the fibres may be 1570, preferably 3050, to the wire axis. The core material may be tungsten or molybdenum and the emissive materials are alkaline earths to which have been added metals of the 4th and 5th Periodic Groups. During torsion the wire may be heated to 200250C. A cathode suitable for discharge lamps may be made by winding the coated wire in a single or double coil, care being taken to see that the coiling torsion is not counter to the original torsion.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP11394A DE960561C (en) | 1954-02-26 | 1954-02-26 | Wire electrode for electric vapor and / or gas discharge lamps and process for their manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB764160A true GB764160A (en) | 1956-12-19 |
Family
ID=6183469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4530/55A Expired GB764160A (en) | 1954-02-26 | 1955-02-15 | Wire electrode for electric vapour and/or gaseous discharge lamp |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2873518A (en) |
| BE (1) | BE535889A (en) |
| CH (1) | CH326003A (en) |
| DE (1) | DE960561C (en) |
| GB (1) | GB764160A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3232717A (en) * | 1962-05-14 | 1966-02-01 | Gen Motors Corp | Uranium monocarbide thermionic emitters |
| FR2553565B1 (en) * | 1983-10-18 | 1987-04-10 | Comp Generale Electricite | PROCESS FOR THE PREPARATION OF MULTIFILAMENTARY SUPERCONDUCTING STRANDS FROM MOLYBDENE TERNARY CHALCOGENIDE |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1602526A (en) * | 1922-09-15 | 1926-10-12 | Westinghouse Lamp Co | Control of crystal development in refractory metals |
| US1722468A (en) * | 1924-04-05 | 1929-07-30 | Forest Radio Telephone & Teleg | Electron-discharge device |
| US2060441A (en) * | 1934-03-29 | 1936-11-10 | Albert M Ross | Welding rod for arc welding |
| DE654918C (en) * | 1935-04-21 | 1938-01-04 | Osram G M B H Komm Ges | Process for the production of electrodes for electrical discharge vessels, in particular discharge lamps |
| DE692705C (en) * | 1936-09-15 | 1940-06-25 | Siemens Schuckertwerke Akt Ges | Incandescent cathode for gas or vapor filled discharge vessels |
| GB478024A (en) * | 1936-11-25 | 1938-01-11 | Gen Electric Co Ltd | Improvements in or relating to thermionic cathodes for high pressure metal vapour discharge devices |
| US2249672A (en) * | 1936-12-10 | 1941-07-15 | Gen Electric | Discharge device |
| US2353635A (en) * | 1941-02-11 | 1944-07-18 | Gen Electric | Cathode for discharge tubes |
| US2363028A (en) * | 1941-12-16 | 1944-11-21 | Carl J Warnke | Cathode filament |
| BE461800A (en) * | 1942-11-23 | |||
| BE496607A (en) * | 1947-04-29 | |||
| US2625666A (en) * | 1950-02-27 | 1953-01-13 | Eitel Mccullough Inc | Filament for electron tubes |
| CH290128A (en) * | 1951-02-02 | 1953-04-15 | Lumalampan Ab | Electrode for low-pressure electric discharge tubes. |
| US2749467A (en) * | 1951-05-17 | 1956-06-05 | Gen Electric | Electrode construction |
-
0
- BE BE535889D patent/BE535889A/xx unknown
-
1954
- 1954-02-26 DE DEP11394A patent/DE960561C/en not_active Expired
-
1955
- 1955-02-07 CH CH326003D patent/CH326003A/en unknown
- 1955-02-14 US US487926A patent/US2873518A/en not_active Expired - Lifetime
- 1955-02-15 GB GB4530/55A patent/GB764160A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE535889A (en) | |
| DE960561C (en) | 1957-03-21 |
| CH326003A (en) | 1957-11-30 |
| US2873518A (en) | 1959-02-17 |
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