GB183389A - Improvements in and relating to electric incandescent lamps and other electric apparatus in which an incandescent filament requires to be kept stretched - Google Patents

Improvements in and relating to electric incandescent lamps and other electric apparatus in which an incandescent filament requires to be kept stretched

Info

Publication number
GB183389A
GB183389A GB27512/21A GB2751221A GB183389A GB 183389 A GB183389 A GB 183389A GB 27512/21 A GB27512/21 A GB 27512/21A GB 2751221 A GB2751221 A GB 2751221A GB 183389 A GB183389 A GB 183389A
Authority
GB
United Kingdom
Prior art keywords
electric
incandescent
relating
filament
kept stretched
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
GB27512/21A
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.)
NAAMLOOZE VENNOOTSCHAP METAALD
Original Assignee
NAAMLOOZE VENNOOTSCHAP METAALD
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 NAAMLOOZE VENNOOTSCHAP METAALD filed Critical NAAMLOOZE VENNOOTSCHAP METAALD
Publication of GB183389A publication Critical patent/GB183389A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K7/00—Lamps for purposes other than general lighting
    • 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

  • Resistance Heating (AREA)

Abstract

183,389. Naamlooze Vennootschap Metaaldraadlampenfabriek Holland. July 29, 1921, [Convention date]. Vacuum tubes.-In an electric incandescent lamp or other apparatus having a stretched filament, the filament 2 is kept taut by a spring 5 of tungsten or other metal which rebains its elasticity when heated and the current is carried by a bridgepiece 3 across the filament, between its extremity and the terminal 4, this bridge being made of nickel or other suitable metal of low resistance. In an alternative form, the bridge piece is helical and concentric with the spring 5.
GB27512/21A 1921-07-29 1921-10-17 Improvements in and relating to electric incandescent lamps and other electric apparatus in which an incandescent filament requires to be kept stretched Expired GB183389A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL183389X 1921-07-29

Publications (1)

Publication Number Publication Date
GB183389A true GB183389A (en) 1922-07-27

Family

ID=19777469

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27512/21A Expired GB183389A (en) 1921-07-29 1921-10-17 Improvements in and relating to electric incandescent lamps and other electric apparatus in which an incandescent filament requires to be kept stretched

Country Status (1)

Country Link
GB (1) GB183389A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010257A1 (en) * 1988-12-27 1991-07-11 Eastman Kodak Company Lamp for scanning apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010257A1 (en) * 1988-12-27 1991-07-11 Eastman Kodak Company Lamp for scanning apparatus

Similar Documents

Publication Publication Date Title
GB183389A (en) Improvements in and relating to electric incandescent lamps and other electric apparatus in which an incandescent filament requires to be kept stretched
GB225293A (en) Improvements in and relating to thermionic vacuum tubes or valves
GB247167A (en) Improvements in or relating to incandescent cathode discharge tubes
GB231280A (en) Improvements in electric couplings, terminals and the like
GB254639A (en) Improvements in tubular electric incandescent lamps
GB189270A (en) Improvements in electrically heating wires such as the filaments of electric discharge devices
GB156411A (en) Improvements in or relating to enclosed-bulb electric devices
GB210944A (en) Improvements in and relating to thermionic valve holders for wireless telegraphy apparatus
GB174929A (en) Improvements in or relating to incandescent electric lamps
GB192697A (en) Improvements in carrier current signalling systems
US1498253A (en) Filament holder to be used in connection with the regenerating of electric incandescent lamps
GB214455A (en) Improvements in electric discharge tubes
GB222247A (en) Improvements in or relating to thermionic valves
GB245574A (en) Improvements in or relating to valve holders for wireless receiving sets
GB194595A (en) Improvements in or connected with the manufacture of thermionic valves and the like
GB216772A (en)
GB185410A (en) Improvements in or relating to electric incandescent lamps
GB646386A (en) Electric gaseous discharge device
GB379090A (en) Improvements in or relating to thermionic valve holders
GB438865A (en) Improvements in or relating to gasfilled electric incandescent lamps intended more particularly for photographic purposes
GB225038A (en) Improvements in incandescent electric lamps
GB486418A (en) Improvements in means for producing light comprising in combination an electric discharge lamp and an electric incandescent lamp whose filament is in series with the discharge path
GB125392A (en) Improved Electrical Device for Heating Liquids.
GB161211A (en) Improvements in or connected with glow or incandescent electric lamps
GB194754A (en) Improvements in and connected with electric incandescent lamps