US1632769A - Filament for incandescent lamps or similar articles - Google Patents

Filament for incandescent lamps or similar articles Download PDF

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Publication number
US1632769A
US1632769A US152699A US15269926A US1632769A US 1632769 A US1632769 A US 1632769A US 152699 A US152699 A US 152699A US 15269926 A US15269926 A US 15269926A US 1632769 A US1632769 A US 1632769A
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US
United States
Prior art keywords
filament
incandescent lamps
similar articles
coils
mounting
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 - Lifetime
Application number
US152699A
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English (en)
Inventor
Severin Carl
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.)
General Electric Co
Original Assignee
General Electric Co
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
Priority to BE346958D priority Critical patent/BE346958A/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US152699A priority patent/US1632769A/en
Priority to DEP54915D priority patent/DE464733C/de
Application granted granted Critical
Publication of US1632769A publication Critical patent/US1632769A/en
Priority to FR645029D priority patent/FR645029A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape

Definitions

  • My invention relates to electric incandescent lamps and similar devices comprising a filament or other energy translating body and more particularly to the said filament or '5 translating body per se. Still more particularly my invention relates to coiled aments which have a U or V shape comprising two straight leg portions connected by a bend portion. l v It is desirable inthe case of coiled filament to have a uniform spacing of the turns since this causes the various portions of the filament to be heated to a uniform temperature, thus avoiding hot spots. The practice has been to deliver the straight sections of the coiled filaments to the operator for mounting who, in the process of mounting, bends the lament in the desired shape.
  • Fig. 1 is an elevation of B5 an electric incandescent lamp comprising a filament made in accordance with my invention
  • Fig. 2 is an enlarged elevation of a mounted filament
  • Fig. 3 is a partially broken away elevation of a straight section 40 of a lament ready for mounting.
  • the filament 10 is of coiled metal, ordinarily tungsten, and is mounted upon the rigid .conducting supports 11-12 which are 'united to the leading-in conductors 13-14 sealed into the flattened portion 15 of the glass stem 16, said stem bein sealed into a lamp which comprises the usua vturns e coils more closely together at thel bulb 17 and base 18.
  • the straight section of filament consists of a coil ordinarily of drawn tungsten.
  • the coil is wound with a variable pitch, that is, the spaces of the coil are narrower at the ends of the section than in the middle. as indicated in the drawing.
  • the number of per inch runs from one hundred twenty-five at the extreme ends to one hun- Adred at the middle portion.
  • a coiled filament comprlsing two leg portions connected by an intermediate or bend portion and having its coils substantially uniformly spaced from each other along the inside the filament.
  • incandescent lamps and similardevices comprising a filament and supports therefor, .the method4 which consists in coilin said filament with a variable pitch such t at in the intermediate portion of the filament the coils are more widely spaced than in the end portions, and then mounting said filament on said supports so that it assumes a substantially U shape.

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  • Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
US152699A 1926-12-04 1926-12-04 Filament for incandescent lamps or similar articles Expired - Lifetime US1632769A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE346958D BE346958A (en, 2012) 1926-12-04
US152699A US1632769A (en) 1926-12-04 1926-12-04 Filament for incandescent lamps or similar articles
DEP54915D DE464733C (de) 1926-12-04 1927-03-27 Wendelleuchtkoerper fuer elektrische Gluehlampen
FR645029D FR645029A (fr) 1926-12-04 1927-12-01 Perfectionnements aux filaments pour lampes à incandescence et appareils similaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US152699A US1632769A (en) 1926-12-04 1926-12-04 Filament for incandescent lamps or similar articles

Publications (1)

Publication Number Publication Date
US1632769A true US1632769A (en) 1927-06-14

Family

ID=22544030

Family Applications (1)

Application Number Title Priority Date Filing Date
US152699A Expired - Lifetime US1632769A (en) 1926-12-04 1926-12-04 Filament for incandescent lamps or similar articles

Country Status (4)

Country Link
US (1) US1632769A (en, 2012)
BE (1) BE346958A (en, 2012)
DE (1) DE464733C (en, 2012)
FR (1) FR645029A (en, 2012)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2633552A (en) * 1951-06-04 1953-03-31 Westinghouse Electric Corp Lamp, filament therefor and method
WO2001091161A1 (en) * 2000-05-23 2001-11-29 Illumination Technology, Inc. Low voltage incandescent lamp with variable pitch filament
US6690103B1 (en) 1999-07-21 2004-02-10 Alan K. Uke Incandescent light bulb with variable pitch coiled filament
EP1777726A2 (en) 2005-10-21 2007-04-25 Rigaku Corporation Filament for X-ray tube and X-ray tube having the same
WO2007125075A3 (de) * 2006-05-03 2008-07-31 Osram Gmbh Halogenglühlampe mit carbidhaltigem leuchtkörper
US20120098407A1 (en) * 2010-10-20 2012-04-26 General Electric Company Electric incandescent lamp for vehicle headlights with new filament geometry

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2633552A (en) * 1951-06-04 1953-03-31 Westinghouse Electric Corp Lamp, filament therefor and method
US6690103B1 (en) 1999-07-21 2004-02-10 Alan K. Uke Incandescent light bulb with variable pitch coiled filament
WO2001091161A1 (en) * 2000-05-23 2001-11-29 Illumination Technology, Inc. Low voltage incandescent lamp with variable pitch filament
EP1777726A2 (en) 2005-10-21 2007-04-25 Rigaku Corporation Filament for X-ray tube and X-ray tube having the same
EP1777726A3 (en) * 2005-10-21 2009-10-21 Rigaku Corporation Filament for X-ray tube and X-ray tube having the same
WO2007125075A3 (de) * 2006-05-03 2008-07-31 Osram Gmbh Halogenglühlampe mit carbidhaltigem leuchtkörper
US20120098407A1 (en) * 2010-10-20 2012-04-26 General Electric Company Electric incandescent lamp for vehicle headlights with new filament geometry
US8581492B2 (en) * 2010-10-20 2013-11-12 General Electric Company Electric incandescent lamp for vehicle headlights with new filament geometry

Also Published As

Publication number Publication date
DE464733C (de) 1928-08-25
BE346958A (en, 2012)
FR645029A (fr) 1928-10-18

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