GB191406439A - Improvements in and relating to Filaments for Incandescent Electric Lamps and Methods of Making the same. - Google Patents

Improvements in and relating to Filaments for Incandescent Electric Lamps and Methods of Making the same.

Info

Publication number
GB191406439A
GB191406439A GB191406439DA GB191406439A GB 191406439 A GB191406439 A GB 191406439A GB 191406439D A GB191406439D A GB 191406439DA GB 191406439 A GB191406439 A GB 191406439A
Authority
GB
United Kingdom
Prior art keywords
filaments
wound
wire
helix
same
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
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB191406439A publication Critical patent/GB191406439A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Resistance Heating (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB191406439D 1914-09-11 1914-03-13 Improvements in and relating to Filaments for Incandescent Electric Lamps and Methods of Making the same. Expired GB191406439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US458877XA 1914-09-11 1914-09-11

Publications (1)

Publication Number Publication Date
GB191406439A true GB191406439A (en) 1920-08-26

Family

ID=32586531

Family Applications (2)

Application Number Title Priority Date Filing Date
GB191406439D Expired GB191406439A (en) 1914-09-11 1914-03-13 Improvements in and relating to Filaments for Incandescent Electric Lamps and Methods of Making the same.
GB191421435D Expired GB191421435A (en) 1914-09-11 1914-10-23 Improvements in and relating Electric Incandescent Lamps.

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB191421435D Expired GB191421435A (en) 1914-09-11 1914-10-23 Improvements in and relating Electric Incandescent Lamps.

Country Status (3)

Country Link
FR (3) FR458877A (https=)
GB (2) GB191406439A (https=)
NL (1) NL8044C (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7804040A (nl) * 1978-04-17 1979-10-19 Philips Nv Elektrische menglichtlamp.
US4920624A (en) * 1988-12-07 1990-05-01 Texas Instruments Incorporated Method and apparatus for making a double helix thermostat metal spring
JP2007529860A (ja) * 2004-03-17 2007-10-25 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ ２つのコイルを含む白熱電球及び電球組立体
DE102008059292A1 (de) * 2008-11-27 2010-06-02 Osram Gesellschaft mit beschränkter Haftung Glühlampe

Also Published As

Publication number Publication date
FR458877A (fr) 1913-10-21
NL8044C (https=)
GB191421435A (en) 1915-06-24
FR20302E (fr) 1917-08-01
FR19410E (fr) 1915-01-29

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