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GB1061127A - Device for sealing an electric lamp envelope and electric lamp made with such a device - Google Patents

Device for sealing an electric lamp envelope and electric lamp made with such a device

Info

Publication number
GB1061127A
GB1061127A GB795065A GB795065A GB1061127A GB 1061127 A GB1061127 A GB 1061127A GB 795065 A GB795065 A GB 795065A GB 795065 A GB795065 A GB 795065A GB 1061127 A GB1061127 A GB 1061127A
Authority
GB
United Kingdom
Prior art keywords
jaws
blade
electric lamp
stem
leading
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
GB795065A
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of GB1061127A publication Critical patent/GB1061127A/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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/32—Sealing leading-in conductors
    • H01J9/323—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device
    • H01J9/326—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device making pinched-stem or analogous seals

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

<PICT:1061127/C1/1> One of the pinching jaws used to pinch-seal the lamp envelope and simultaneously to seal-in the leading-in wire or wires is provided with a transverse metal blade to stop the flow of softened glass towards the end of the lamp. For producing a stem press rectangular cross-section, the jaws 4, 5 have lateral extensions 8, 9. The jaw 4 carries a blade 12 with a slot 13 having a funnel-shaped opening 14 to receive the leading-in wire 2. To produce a stem press of I-shaped cross-section, two pairs of jaws moving at right-angles may be used, one pair of which is first brought into contact with the softened glass 3 of the stem. The glass 3, which may be quartz, is then pressed by the second pair of jaws which are similar to the jaws 4, 5 but without the lateral extensions and one of which carries the slotted blade. The jaws are of brass and the blade of stainless steel.
GB795065A 1964-03-04 1965-02-24 Device for sealing an electric lamp envelope and electric lamp made with such a device Expired GB1061127A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964P0033745 DE1238571B (en) 1964-03-04 1964-03-04 Device for closing a lamp vessel and an electric lamp produced with the device

Publications (1)

Publication Number Publication Date
GB1061127A true GB1061127A (en) 1967-03-08

Family

ID=7373384

Family Applications (1)

Application Number Title Priority Date Filing Date
GB795065A Expired GB1061127A (en) 1964-03-04 1965-02-24 Device for sealing an electric lamp envelope and electric lamp made with such a device

Country Status (3)

Country Link
DE (1) DE1238571B (en)
FR (1) FR1425956A (en)
GB (1) GB1061127A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818804A3 (en) * 1996-07-10 1998-03-18 Koito Manufacturing Co., Ltd ARC tube for discharge lamp device
GB2424992A (en) * 2005-04-07 2006-10-11 Gen Electric Lamp capsule pinch seal and method of making such a seal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4233469A1 (en) * 1992-10-05 1994-04-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Method for producing a high-pressure discharge lamp of small wattage, which is pinched on one side, and high-pressure discharge lamps

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2109544A (en) * 1929-10-07 1938-03-01 Raytheon Production Corp Space discharge tube stem machine
US1945769A (en) * 1930-02-14 1934-02-06 Westinghouse Lamp Co Method of sealing off
US2006231A (en) * 1934-09-28 1935-06-25 Gen Electric Method of and apparatus for sealing electric lamps and similar articles
US2491237A (en) * 1947-05-17 1949-12-13 Westinghouse Electric Corp Manufacture of miniature lamps
BE517821A (en) 1952-02-23
DE965426C (en) * 1955-06-16 1957-06-06 Patra Patent Treuhand Process for the production of electric incandescent or glow lamps

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818804A3 (en) * 1996-07-10 1998-03-18 Koito Manufacturing Co., Ltd ARC tube for discharge lamp device
US5877591A (en) * 1996-07-10 1999-03-02 Koito Manufacturing Co., Ltd. Arc tube for discharge lamp device
GB2424992A (en) * 2005-04-07 2006-10-11 Gen Electric Lamp capsule pinch seal and method of making such a seal
GB2424992B (en) * 2005-04-07 2009-04-01 Gen Electric Lamp capsule pinch seal and method of making such a seal

Also Published As

Publication number Publication date
DE1238571B (en) 1967-04-13
FR1425956A (en) 1966-01-24

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