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 lamps

Info

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
Application number
GB3887857A
Inventor
Eric John George Beeson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB3887857A priority Critical patent/GB900036A/en
Priority to DEB51401A priority patent/DE1088612B/en
Publication of GB900036A publication Critical patent/GB900036A/en
Expired legal-status Critical Current

Links

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)
  • Powder Metallurgy (AREA)
  • Discharge Lamp (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.
GB3887857A 1957-12-13 1957-12-13 Improvements relating to the production of refractory metal electrodes for electric discharge lamps Expired GB900036A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE1088612B (en) 1960-09-08

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