GB1453943A - Incandescent lamp and method of amnufacturing the same - Google Patents

Incandescent lamp and method of amnufacturing the same

Info

Publication number
GB1453943A
GB1453943A GB5858773A GB5858773A GB1453943A GB 1453943 A GB1453943 A GB 1453943A GB 5858773 A GB5858773 A GB 5858773A GB 5858773 A GB5858773 A GB 5858773A GB 1453943 A GB1453943 A GB 1453943A
Authority
GB
United Kingdom
Prior art keywords
glass
tube
lead
lamp
tungsten
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
GB5858773A
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
Application filed by General Electric Co filed Critical General Electric Co
Priority to BE145317A priority Critical patent/BE816211A/en
Publication of GB1453943A publication Critical patent/GB1453943A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Glass Compositions (AREA)

Abstract

1453943 Glass-metal seals; glass compositions GENERAL ELECTRIC CO 18 Dec 1973 [18 Dec 1972] 58587/73 Heading C1M [Also in Division H1] A method of making a tungsten-halogen lamp having an envelope made of aluminosilicate glass which is rounded at one end and has refractory metal lead-in wires and an exhaust tube sealed into the other end is characterized in that a refractory metal spiral is positioned inside the exhaust tube in the region of the seal to keep the tube open during the sealing operation. The spiral which is preferably made of tungsten, is introduced into the tube prior to the assembly of the lamp and is held in position by lightly heating the tube until some of the glass of the tube flows between the turns of the spiral. The aluminosilicate glass comprises between 59% and 70% by weight of SiO 2 , between 10% and 20% of Al 2 O 3 and between 7À4% and 28% of BaO, the preferred composition being as follows: 62À0% by weight of SiO 2 17À2% " " " Al 2 O 3 19.0% " " " BaO 1À5% " " " CaO trace of ZrO 2 trace of TiO and the coefficient of thermal expansion of the glass is substantially the same as that of the lead-in wires, which are made of molybdenum or tungsten, so that no foliated sections of lead-in wire are required in the seal which can consequently be small. A preferred fill gas for the lamp has the following composition: 98À95% by volume of Kr 0À05% " " " O 2 1À00% " " " CH 3 I the methyl iodide being cracked after the lamp has been sealed by applying an arc between the lead-in wires and an external semicircular probe in the vicinity of the seal.
GB5858773A 1972-12-18 1973-12-18 Incandescent lamp and method of amnufacturing the same Expired GB1453943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE145317A BE816211A (en) 1972-12-18 1974-06-12 Hard wurtzitic boron nitride polycrystals - suitable for cutting tools have improved plasticity and shock resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31577272A 1972-12-18 1972-12-18

Publications (1)

Publication Number Publication Date
GB1453943A true GB1453943A (en) 1976-10-27

Family

ID=23225991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5858773A Expired GB1453943A (en) 1972-12-18 1973-12-18 Incandescent lamp and method of amnufacturing the same

Country Status (5)

Country Link
US (1) US3798491A (en)
JP (1) JPS5846822B2 (en)
DE (1) DE2362528A1 (en)
FR (1) FR2210822B1 (en)
GB (1) GB1453943A (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2341028B2 (en) * 1973-08-14 1975-08-28 Philips Patentverwaltung Gmbh, 2000 Hamburg Process for the production of miniature incandescent lamps
US3912960A (en) * 1974-06-21 1975-10-14 Gen Electric Halogen lamp with internal molybdenum parts
US4015158A (en) * 1974-08-30 1977-03-29 General Electric Company Bromine lamp with molybdenum parts
US4015157A (en) * 1974-09-20 1977-03-29 General Electric Company Iodine lamp with molybdenum parts
US3978362A (en) * 1975-08-07 1976-08-31 Corning Glass Works Glass envelope for tungsten-bromine lamp
US4126810A (en) * 1976-06-01 1978-11-21 General Electric Company Ceramic base for glass halogen lamps
JPS5369485A (en) * 1976-11-26 1978-06-20 Gen Electric Incandescent lamp
NL7804198A (en) * 1978-04-20 1979-10-23 Philips Nv ELECTRIC LAMP.
GB2032909B (en) * 1978-08-09 1982-12-22 Gen Electric Sealing glass compositions
JPS55155464A (en) * 1979-05-24 1980-12-03 Tokyo Shibaura Electric Co Halogennfilled incandescent lamp
US4463277A (en) * 1980-08-11 1984-07-31 North American Philips Lighting Corporation Compact halogen-cycle incandescent lamp, and lamp unit utilizing such lamp as a light source
US4409516A (en) * 1981-01-22 1983-10-11 General Electric Company Rounded end halogen lamp with exhaust tube having different glass
US4394453A (en) * 1981-09-08 1983-07-19 Corning Glass Works Envelopes for tungsten-halogen lamps
US4857804A (en) * 1982-04-28 1989-08-15 Gte Products Corporation Tungsten-halogen lamp with metal additive
US4409337A (en) * 1982-11-12 1983-10-11 Corning Glass Works Glass envelopes for tungsten-halogen lamps
US5037342A (en) * 1988-11-15 1991-08-06 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. Method of making an electric lamp, and more particularly a lamp vessel in which electrodes are retained in the lamp by a pinch or press seal
FR2644933A1 (en) * 1989-03-24 1990-09-28 Gen Electric MONOBLOCK LAMP WITH REFLECTOR
EP0500340A3 (en) * 1991-02-21 1992-12-30 General Electric Company Double filament incandescent lamp
US5359262A (en) * 1992-08-31 1994-10-25 Welch Allyn, Inc. Sub-miniature tungsten halogen lamp with major inert gas and minor halide gas constitutes
US5473226A (en) * 1993-11-16 1995-12-05 Osram Sylvania Inc. Incandescent lamp having hardglass envelope with internal barrier layer
DE19843525A1 (en) * 1998-09-23 2000-03-30 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Halogen incandescent lamp has an additional filling containing oxygen in the form of a nitrogen-oxygen compound
DE602006018342D1 (en) * 2005-10-05 2010-12-30 Philips Intellectual Property CRACKING PROCESS FOR HALOGENATED HYDROCARBON IN A HALOGEN LAMP THROUGH EXTERNAL HEAT SOURCE
JP2016206484A (en) * 2015-04-24 2016-12-08 株式会社リコー Heater, fixing device, and image forming apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE464660A (en) *
US1833488A (en) * 1926-09-08 1931-11-24 Sirian Lamp Co Apparatus for manufacturing electric light bulbs
GB717630A (en) * 1951-07-20 1954-10-27 British Thomson Houston Co Ltd Improvements in and relating to electric incandescent lamps
US2825040A (en) * 1955-03-31 1958-02-25 Gen Electric Ornamental illuminating device
NL280883A (en) * 1961-07-13
US3270237A (en) * 1963-06-26 1966-08-30 Gen Electric Electric lamp with single ended pinch seal
US3496401A (en) * 1965-12-30 1970-02-17 Corning Glass Works Glass envelopes for iodine cycle incandescent lamps
DE1802092A1 (en) * 1968-10-09 1970-06-04 Patra Patent Treuhand Method for sealing glass base incandescent lamps filled with excess pressure

Also Published As

Publication number Publication date
FR2210822B1 (en) 1977-06-10
JPS5846822B2 (en) 1983-10-19
DE2362528A1 (en) 1974-07-04
US3798491A (en) 1974-03-19
FR2210822A1 (en) 1974-07-12
JPS4989381A (en) 1974-08-27

Similar Documents

Publication Publication Date Title
GB1453943A (en) Incandescent lamp and method of amnufacturing the same
GB1231517A (en)
CA1041156A (en) Halogen lamp with internal molybdenum parts
EP0178700A1 (en) Electric lamp and glass composition
GB1043172A (en) Electric lamp and manufacture thereof
GB1374063A (en) Highpressure gas discharge lamps
US4721886A (en) High-pressure discharge lamp with precision end seal structure
GB1475381A (en) Tungsten-halogen lamp
GB986514A (en) Improvements in the manufacture of electric incandescent lamps
SE8200046L (en) URL Adding Piston to High Pressure Sodium Lamp
GB1488804A (en) Electric lamp
JPS57123625A (en) Bulb
GB1231141A (en)
GB882190A (en) Improvements in or relating to envelopes for electrical devices
GB788655A (en) Improvements in electric discharge lamps
GB1055257A (en) Improvements relating to tubular incandescent electric lamps
GB1294954A (en)
GB441000A (en) Improvements in and relating to vapour electric discharge devices
US2330072A (en) Seal and method of manufacture
GB1362646A (en) Method for producing a multiple filamented cartridge lamp
GB1309337A (en) Arc tubes
JPH0119226B2 (en)
GB638208A (en) Lead wire construction and method of sealing
GB945020A (en) Method of introducing iodine into incandescent lamps
JPS6336608Y2 (en)

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee