GB900036A - Improvements relating to the production of refractory metal electrodes for electric discharge lamps - Google Patents
Improvements relating to the production of refractory metal electrodes for electric discharge lampsInfo
- Publication number
- GB900036A GB900036A GB3887857A GB3887857A GB900036A GB 900036 A GB900036 A GB 900036A GB 3887857 A GB3887857 A GB 3887857A GB 3887857 A GB3887857 A GB 3887857A GB 900036 A GB900036 A GB 900036A
- Authority
- GB
- United Kingdom
- Prior art keywords
- refractory metal
- electric discharge
- production
- metal electrodes
- discharge lamps
- 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
- 239000003870 refractory metal Substances 0.000 title abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 230000008018 melting Effects 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Discharge Lamp (AREA)
- Powder Metallurgy (AREA)
Abstract
900,036. Casting composite articles. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 3, 1958 [Dec. 13, 1957], No. 38878/57. Class 83 (1). [Also in Group XL (a)] An electrode for a high pressure electric discharge lamp is made by arc-melting sintered refractory metal, e.g. tungsten, in an annular mould 1 so as to fuse it to a stem 3 of refractory metal, and then machining, e.g. to the shape shown in Fig. 2. The mould is liquid-cooled and the melting chamber 7 is evacuated and filled with an inert gas such as argon.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3887857A GB900036A (en) | 1957-12-13 | 1957-12-13 | Improvements relating to the production of refractory metal electrodes for electric discharge lamps |
| DEB51401A DE1088612B (en) | 1957-12-13 | 1958-12-11 | Process for the production of a raw electrode for electrodes of high pressure discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3887857A GB900036A (en) | 1957-12-13 | 1957-12-13 | Improvements relating to the production of refractory metal electrodes for electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB900036A true GB900036A (en) | 1962-07-04 |
Family
ID=10406226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3887857A Expired GB900036A (en) | 1957-12-13 | 1957-12-13 | Improvements relating to the production of refractory metal electrodes for electric discharge lamps |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1088612B (en) |
| GB (1) | GB900036A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3850604A (en) * | 1972-12-11 | 1974-11-26 | Gte Laboratories Inc | Preparation of chalcogenide glass sputtering targets |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2153009A (en) * | 1935-09-10 | 1939-04-04 | Gen Electric | Electric discharge lamp |
| FR901198A (en) * | 1943-01-15 | 1945-07-19 | Philips Nv | Gas or vapor atmosphere discharge tube |
-
1957
- 1957-12-13 GB GB3887857A patent/GB900036A/en not_active Expired
-
1958
- 1958-12-11 DE DEB51401A patent/DE1088612B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1088612B (en) | 1960-09-08 |
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