GB725695A - Improvements in and relating to quartz-to-metal seals - Google Patents

Improvements in and relating to quartz-to-metal seals

Info

Publication number
GB725695A
GB725695A GB4986/53A GB498653A GB725695A GB 725695 A GB725695 A GB 725695A GB 4986/53 A GB4986/53 A GB 4986/53A GB 498653 A GB498653 A GB 498653A GB 725695 A GB725695 A GB 725695A
Authority
GB
United Kingdom
Prior art keywords
quartz
jaws
tube
lands
jaw
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
GB4986/53A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB725695A publication Critical patent/GB725695A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/02—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing by fusing glass directly to metal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

725,695. Quartz-metal seals. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 23, 1953 [Feb. 23, 1952], No. 4986/53. Class 36. A quartz-metal seal comprising a quartz tube having one end pressed around and hermetically united to a foil portion of a metal conductor is made with an apparatus comprising a pair of jaws 14, 15 having opposing operative faces across each of which extends a wide groove 17 and lands 18, 19 which are so spaced that the groove overlies the foil section of the conductor and the lands overlie the ends of said section. Two molybdenum conductors 1, 2, having foil sections 3, 4, are supported in a jig 5 between the jaws 14, 15. A quartz tube 12 is placed around the wires and held with its lower end approximately ¢ mm. above the surface of the jig to allow for the circulation of an inert gas therethrough during sealing. The lower end of the tube is softened by heat and flattened by the jaws. The jaws are retracted and the tube end reheated after which the jaws are advanced until the pressed quartz stops further movement. The lands 18, 19 restrict the flow of quartz in the longitudinal direction of the assembly. Lateral flow is prevented by a flange 22 on each jaw which, when the jaws are closed, overlies a corresponding cut away portion 23 on the opposing jaw. The top surface 20 of each jaw is preferably concave and the upper land 19 correspondingly curved so that a pair of arcuate grooves 21 (Fig. 2) are impressed on the quartz, leaving no cavities at the sealed end of tube 12. The lower lands 18 are straight and close the outer end of tube 12, pressing the quartz about the lead-in wires. Specification 713,828, [Group XL (a)], is referred to.
GB4986/53A 1952-02-23 1953-02-23 Improvements in and relating to quartz-to-metal seals Expired GB725695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US272985A US2816398A (en) 1952-02-23 1952-02-23 Apparatus for manufacture of a quartzto-metal foil press seal

Publications (1)

Publication Number Publication Date
GB725695A true GB725695A (en) 1955-03-09

Family

ID=23042075

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4986/53A Expired GB725695A (en) 1952-02-23 1953-02-23 Improvements in and relating to quartz-to-metal seals

Country Status (5)

Country Link
US (1) US2816398A (en)
BE (1) BE517821A (en)
DE (1) DE1018548B (en)
FR (4) FR1068795A (en)
GB (1) GB725695A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857712A (en) * 1957-06-24 1958-10-28 Gen Electric Quartz lamp sealing machine
US3025426A (en) * 1960-02-18 1962-03-13 Westinghouse Electric Corp Press seal
US3557991A (en) * 1968-08-20 1971-01-26 Wagner Electric Corp Electric lamp envelope with pinch-sealed portion
FR2464559A1 (en) * 1979-08-31 1981-03-06 Gte Prod Corp ARC TUBE FOR HALIDE METAL DISCHARGE LAMP HAVING IMPROVED COLOR UNIFORMITY
DE19724544A1 (en) * 1997-06-11 1998-12-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Molybdenum foil sealing in glass and electric lamp with such a molybdenum foil sealing
DE102005056956A1 (en) * 2005-11-29 2007-05-31 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High-pressure electric discharge lamp or a halogen lamp for e.g. reflector lamps has twin-stage squeeze seal

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1659613A (en) * 1925-01-17 1928-02-21 Gen Electric Method and apparatus for making stems
US1933323A (en) * 1930-08-27 1933-10-31 Westinghouse Lamp Co Method of making mercury switches
DE573448C (en) * 1931-03-13 1933-04-01 Siemens & Halske Akt Ges Vacuum tight current introduction
US1969525A (en) * 1931-05-29 1934-08-07 Bell Telephone Labor Inc Machine for working glass
US2020729A (en) * 1934-01-27 1935-11-12 Gen Electric Vapor Lamp Co Method of and apparatus for sealing vitreous bodies
US2069079A (en) * 1935-07-10 1937-01-26 Gen Electric Stem for electric lamps and similar articles
GB476488A (en) * 1936-06-05 1937-12-06 Gen Electric Co Ltd Improvements in the sealing of electric conductors into quartz envelopes
US2143690A (en) * 1936-08-22 1939-01-10 Gen Electric Stem for electric lamps and similar devices
GB481940A (en) * 1936-09-16 1938-03-16 Ernest Yeoman Robinson Improvements in the sealing of electric lead-in wires into glass envelopes
GB489626A (en) * 1937-01-28 1938-07-28 Gen Electric Co Ltd Improvements in the sealing of electric conductors through quartz envelopes
US2334604A (en) * 1939-09-19 1943-11-16 Gen Electric Glassworking apparatus
NL57687C (en) * 1939-10-14
DE762748C (en) * 1942-03-04 1952-10-27 Patra Patent Treuhand Pair of pinch jaws for melting electrically conductive metal foils into hard glass, especially quartz glass
US2632033A (en) * 1949-07-19 1953-03-17 Krefft Hermann Eduard Seal for electrical discharge devices

Also Published As

Publication number Publication date
FR63277E (en) 1955-09-12
FR1068795A (en) 1954-06-30
BE517821A (en)
US2816398A (en) 1957-12-17
DE1018548B (en) 1957-10-31
FR63733E (en) 1955-10-03
FR64156E (en) 1955-10-21

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