GB473863A - Improvements in methods of producing electric lamps with high pressure gas fillings - Google Patents

Improvements in methods of producing electric lamps with high pressure gas fillings

Info

Publication number
GB473863A
GB473863A GB4029/37A GB402937A GB473863A GB 473863 A GB473863 A GB 473863A GB 4029/37 A GB4029/37 A GB 4029/37A GB 402937 A GB402937 A GB 402937A GB 473863 A GB473863 A GB 473863A
Authority
GB
United Kingdom
Prior art keywords
gas
lamp
pressure
high pressure
lamps
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
GB4029/37A
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.)
HAMMARBYLAMPAN AB
Original Assignee
HAMMARBYLAMPAN AB
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 HAMMARBYLAMPAN AB filed Critical HAMMARBYLAMPAN AB
Publication of GB473863A publication Critical patent/GB473863A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Discharge Lamp (AREA)

Abstract

473,863. Discharge apparatus. AKTIEBOLAGET HAMMARBYLAMPAN. Feb. 10, 1937, No. 4029. Convention date, Feb. 11, 1936. [Class 39 (i)] [Also in Group XI] In a method of filling electric incandescent lamps and discharge tubes with a gas which, even when the lamp is not in operation has a pressure exceeding atmospheric pressure, the pressure within the lamp during the sealing operation is kept lower than or substantially equal to the surrounding pressure. The lamp bulb may be evacuated by a vacuum pump, filled with gas and then cooled so that the contained gas is liquefied or solidified, the sealing next being carried out in the usual manner by heating the glass until it is softened sufficiently for the pressure of the outer atmosphere to press the walls of the stem together at the sealing point. The pressure within the lamp is subsequently increased by warming the lamp. The cooling may be effected by using liquid air in the manufacture of lamps containing Krypton or xenon or a mixture of those gases at high pressure, while liquid nitrogen is preferable in the production of high pressure argon lamps. Alternatively, liquid hydrogen or liquid neon may be used. The condensation of the filling gas may be carried out in a separate cooling plant and the condensed gas then supplied to the lamps through a heat-insulated conduit. The gas may also be supplied to a lamp by introducing therein a substance containing the gas in chemical or mechanical combination whereby, after sealing the lamp, the gas is liberated, for example by heating. Examples of such substances are the nitrides of alkali or alkaline earth metals, such as NaN3. For the production of hydrogen at high pressure in an electric discharge tube the hydride of lithium may be used which, upon heating, will liberate hydrogen.
GB4029/37A 1936-02-11 1937-02-10 Improvements in methods of producing electric lamps with high pressure gas fillings Expired GB473863A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE473863X 1936-02-11

Publications (1)

Publication Number Publication Date
GB473863A true GB473863A (en) 1937-10-21

Family

ID=20310363

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4029/37A Expired GB473863A (en) 1936-02-11 1937-02-10 Improvements in methods of producing electric lamps with high pressure gas fillings

Country Status (1)

Country Link
GB (1) GB473863A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1258514B (en) * 1962-03-22 1968-01-11 Lampes Elect Fab Reunies Process for purging and filling electric lamps with a gas mixture
EP1390963A1 (en) * 2001-05-30 2004-02-25 Advanced Lighting Technologies, Inc. High intensity discharge lamps, arc tubes and methods of manufacture
EP1779402A2 (en) * 2004-07-13 2007-05-02 Advanced Lighting Technologies, Inc. High intensity discharge lamps, arc tubes, and methods of manufacture
CN106051509A (en) * 2016-05-31 2016-10-26 厦门蓝水电子有限公司 Method for gas filling for LED filament bulb

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1258514B (en) * 1962-03-22 1968-01-11 Lampes Elect Fab Reunies Process for purging and filling electric lamps with a gas mixture
EP1390963A1 (en) * 2001-05-30 2004-02-25 Advanced Lighting Technologies, Inc. High intensity discharge lamps, arc tubes and methods of manufacture
EP1390963A4 (en) * 2001-05-30 2006-02-08 Advanced Lighting Tech Inc High intensity discharge lamps, arc tubes and methods of manufacture
EP1779402A2 (en) * 2004-07-13 2007-05-02 Advanced Lighting Technologies, Inc. High intensity discharge lamps, arc tubes, and methods of manufacture
EP1779402A4 (en) * 2004-07-13 2010-12-29 Advanced Lighting Tech Inc High intensity discharge lamps, arc tubes, and methods of manufacture
CN106051509A (en) * 2016-05-31 2016-10-26 厦门蓝水电子有限公司 Method for gas filling for LED filament bulb

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