[go: up one dir, main page]

GB468449A - Improvements in or relating to the manufacture of double or multiple helical tungsten incandescent bodies - Google Patents

Improvements in or relating to the manufacture of double or multiple helical tungsten incandescent bodies

Info

Publication number
GB468449A
GB468449A GB451/36A GB45136A GB468449A GB 468449 A GB468449 A GB 468449A GB 451/36 A GB451/36 A GB 451/36A GB 45136 A GB45136 A GB 45136A GB 468449 A GB468449 A GB 468449A
Authority
GB
United Kingdom
Prior art keywords
per cent
tungsten
cores
core
hydrogen
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
GB451/36A
Other languages
English (en)
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.)
Egyesuelt Izzolampa es Villamossagi Rt
Original Assignee
Egyesuelt Izzolampa es Villamossagi Rt
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 Egyesuelt Izzolampa es Villamossagi Rt filed Critical Egyesuelt Izzolampa es Villamossagi Rt
Publication of GB468449A publication Critical patent/GB468449A/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)
  • Resistance Heating (AREA)
GB451/36A 1935-01-07 1936-01-06 Improvements in or relating to the manufacture of double or multiple helical tungsten incandescent bodies Expired GB468449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU468449X 1935-01-07

Publications (1)

Publication Number Publication Date
GB468449A true GB468449A (en) 1937-07-06

Family

ID=10979270

Family Applications (1)

Application Number Title Priority Date Filing Date
GB451/36A Expired GB468449A (en) 1935-01-07 1936-01-06 Improvements in or relating to the manufacture of double or multiple helical tungsten incandescent bodies

Country Status (2)

Country Link
BE (1) BE413156A (xx)
GB (1) GB468449A (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439913A (en) * 1941-10-28 1948-04-20 Gen Electric Method of treating coiled tungsten filaments
EP0849770A2 (de) * 1996-12-20 1998-06-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren zur Herstellung von helikal gewickelten Wendelkörpern und Wendelkörper, die nach dieser Methode hergestellt sind
CN105047523A (zh) * 2015-06-15 2015-11-11 成都凯赛尔电子有限公司 一种灯丝定型的方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439913A (en) * 1941-10-28 1948-04-20 Gen Electric Method of treating coiled tungsten filaments
EP0849770A2 (de) * 1996-12-20 1998-06-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren zur Herstellung von helikal gewickelten Wendelkörpern und Wendelkörper, die nach dieser Methode hergestellt sind
EP0849770A3 (de) * 1996-12-20 1999-06-09 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren zur Herstellung von helikal gewickelten Wendelkörpern und Wendelkörper, die nach dieser Methode hergestellt sind
CN105047523A (zh) * 2015-06-15 2015-11-11 成都凯赛尔电子有限公司 一种灯丝定型的方法

Also Published As

Publication number Publication date
BE413156A (xx)

Similar Documents

Publication Publication Date Title
GB468449A (en) Improvements in or relating to the manufacture of double or multiple helical tungsten incandescent bodies
US2225239A (en) Filament
US2165310A (en) Filament
US3113893A (en) Incandescent filament
US2136649A (en) Coiled coil and the method and apparatus for making
US3346761A (en) Incandescent lamp with a tungsten filament with tantalum imbedded in the surface to act as a gettering agent
US2308700A (en) Method of treating fabricated tungsten wires or rods
US1733752A (en) Refractory metal and its manufacture
US1728814A (en) Manufacture of ductile bodies from highly-refractory metals
US599306A (en) Ng filaments for electric lighting
GB428189A (en) Improvements in metallic scouring pads and the method of producing same
GB1136949A (en) Improvements in electric incandescent lamp and filament
US2083456A (en) Manufacture of coiled-coil filaments for electric incandescent lamps and similar devices
GB227385A (en) Improvements in spiral filaments for electric incandescent lamps
DE694240C (de) Verfahren zum Herstellen von doppelwandigen Hochdruckmetalldampfentladungslampen mitGluehelektroden
GB481964A (en) Filaments for electric incandescent lamps and method of manufacturing the same
GB439243A (en) An improved method of evacuating vessels, more particularly lamp bulbs
US1904105A (en) Nonsag helical tungsten filament and method of making it
GB798945A (en) Improvements in or relating to electric discharge devices
SU56796A1 (ru) Способ изготовлени сердечника дл оксидных катодов
AT143576B (de) Verfahren zum Entlüften von Gefäßen, insbesondere von Glühlampenkolben.
SU7415A1 (ru) Способ изготовлени тел накаливани
AT152981B (de) Verfahren zur Herstellung von mittelbar geheizten Kathoden für elektrische Entladungsgefäße mit wendelförmigem Heizfaden.
GB486884A (en) Improvements in and relating to the production of spiral filaments
GB418284A (en) Method of precipitating zirconium and/or hafnium on a core consisting of a highly refractory material