GB191315297A - Improvements in and relating to the Manufacture of Electric Incandescent Lamps. - Google Patents

Improvements in and relating to the Manufacture of Electric Incandescent Lamps.

Info

Publication number
GB191315297A
GB191315297A GB191315297DA GB191315297A GB 191315297 A GB191315297 A GB 191315297A GB 191315297D A GB191315297D A GB 191315297DA GB 191315297 A GB191315297 A GB 191315297A
Authority
GB
United Kingdom
Prior art keywords
oxidation
air
filaments
making
relating
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
Inventor
Fred Simpson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191315297A publication Critical patent/GB191315297A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Resistance Heating (AREA)

Abstract

15,297. Simpson, F. July 2. [Cognate Application, 2612/14.] Modifying chemical characters of metals.- In making tungsten filaments or rods, carbon is removed by reaction with oxidized metal, the oxidation being produced to a predetermined extent, after a preliminary reduction of any oxide originally present, by exposure at a temperature not exceeding 240‹ C. to air, or less preferably to pure oxygen, ozone, or the vapour of hydrogen peroxide, or the like. After making the filaments by squirting, drying and reducing, a definite amount of oxidation is imparted, by heating for about fifteen minutes in an oven to which air has access, to some chosen temperature not over 240‹ C. Arsenic and other oxidizable impurities are eliminated. For decarbonizing, a separate heating may take place in a vertical vacuum furnace at 800-900‹ C.; or both this stage and the subsequent sintering may be carried out in pure hydrogen. Specifications 11,409/06. 13,596/06, 21,509/06, 8947/07, 12,720/08, and 15,192/09 are referred to.
GB191315297D 1913-07-02 1913-07-02 Improvements in and relating to the Manufacture of Electric Incandescent Lamps. Expired GB191315297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191315297T 1913-07-02

Publications (1)

Publication Number Publication Date
GB191315297A true GB191315297A (en) 1914-07-02

Family

ID=32645479

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191315297D Expired GB191315297A (en) 1913-07-02 1913-07-02 Improvements in and relating to the Manufacture of Electric Incandescent Lamps.

Country Status (1)

Country Link
GB (1) GB191315297A (en)

Similar Documents

Publication Publication Date Title
JP3726256B2 (en) Method for nitriding tantalum metal powder
US3697255A (en) Scrap tantalum reclamation process
KR20020021996A (en) Gold-free platinum material dispersion-strengthened by small, finely dispersed particles of base metal oxide
US2505001A (en) Method of making ultraviolet transmitting high silica glass
US8262813B2 (en) Oxygen-enriched niobium wire
GB191315297A (en) Improvements in and relating to the Manufacture of Electric Incandescent Lamps.
US5795366A (en) Method of manufacturing a non-sag tungsten wire for electric lamps
US1054005A (en) Decarbonization of raw metallic filaments for incandescent electric lamps.
US908930A (en) Method of decarbonizing filaments for incandescent lamps.
US2076381A (en) Process for manufacturing metal bodies
JP2002160930A (en) Porous quartz glass and method of producing the same
US1659205A (en) Method of producing refractory metals
JP2007506634A (en) Preparation of niobium oxide powder for use in capacitors
US1280704A (en) Treatment of tungsten filaments.
US1795785A (en) Method of manufacture of electric incandescent lamps and like devices
US1023290A (en) Reduction of oxids.
US1188057A (en) Process of making metallic filaments.
JPS593042A (en) Quartz glass and its manufacture
US1586543A (en) Process of refining metals
GB191005388A (en) Improvements in Processes for Manufacturing Metal Filaments for Incandescent Electric Lamps.
US1034018A (en) Manufacture of tungsten filaments for incandescent electric lamps.
US1001105A (en) Manufacture of electric filaments.
JPS6276152A (en) Manufacturing glass sealing molybdenum wire
GB190520175A (en) Improvements relating to the Manufacture of Incandescing Bodies for Electric Incandescent Lamps.
GB190519379A (en) Process for the Production of Incandescence Filaments for Electric Incandescence Lamps.