GB773226A - Improvements in or relating to methods of sealing a metal contact element into a glass wall - Google Patents

Improvements in or relating to methods of sealing a metal contact element into a glass wall

Info

Publication number
GB773226A
GB773226A GB2730254A GB2730254A GB773226A GB 773226 A GB773226 A GB 773226A GB 2730254 A GB2730254 A GB 2730254A GB 2730254 A GB2730254 A GB 2730254A GB 773226 A GB773226 A GB 773226A
Authority
GB
United Kingdom
Prior art keywords
contact
wall
collar
glass
softened
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
GB2730254A
Inventor
Robert Leonard Breadner
Charles Henry Simms
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 PLC
Original Assignee
General Electric Co PLC
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 PLC filed Critical General Electric Co PLC
Priority to GB2730254A priority Critical patent/GB773226A/en
Publication of GB773226A publication Critical patent/GB773226A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/92—Means forming part of the tube for the purpose of providing electrical connection to it
    • H01J29/925—High voltage anode feedthrough connectors for display tubes
    • 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
    • H01J5/20—Seals between parts of vessels
    • H01J5/22—Vacuum-tight joints between parts of vessel
    • H01J5/26—Vacuum-tight joints between parts of vessel between insulating and conductive parts of vessel
    • 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
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/62—Connection of wires protruding from the vessel to connectors carried by the separate part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
    • H01J2893/0037—Solid sealing members other than lamp bases
    • H01J2893/0041—Direct connection between insulating and metal elements, in particular via glass material
    • H01J2893/0043—Glass-to-metal or quartz-to-metal, e.g. by soldering

Landscapes

  • Spark Plugs (AREA)

Abstract

773,226. Glass-metal seals. GENERAL ELECTRIC CO., Ltd. Sept. 5, 1955 [Sept. 21, 1954], No. 27302/54. Class 36. In sealing a button contact 1 to a glass wall 4, the contact is first sealed to one end of a glass collar 3, the opposite end of the collar is placed against the wall 4 which is softened by heat, the contact and collar are pushed axially into the softened wall to form a closed chamber within the collar in which a gas pressure is created so as to cause the softened glass of the wall to bulge away from the contact and eventually blow out and form an aperture in the wall, the movement of the contact and collar being arrested when the former reaches the position in which it is to be sealed, and the contact, collar and softened glass surrounding the aperture are heated to cause the glass to flow over the outside of the contact and form a seal. The contact 1 is mounted, with the collar 3 uppermost, on a support 5 having a spigot 6 fitting within the contact. The spigot is mounted on a base 7 carried by a rod 8 which is slidable but not rotatable in a mounting 14. The support is biased upwardly by a spring 15, upward movement being limited by stop 16. A circular rim projects above but is spaced from the base 7, the lower edge of the annular gap 19 communicating with a number of ducts 18 radiating from duct 20. A rotating gas burner is arranged above the wall 4 so that a circular zone of glass surrounding an indentation 11 in the wall 4 is heated whilst the collar 3 is pressed against the wall by the-spring 15. The air trapped within the collar, or gas given off from a decomposable substance provided therein, expands, forming an upward bulge in the part of the wall covering the end of the collar. The stop 16 arrests upward movement of the support when rim 17 is just pressed into the softened wall 4. After the bulge has burst, a vacuum is created in the chamber between the base 7 and wall 4, causing the softened glass to be drawn down towards the base and moulded to the shape of the base and the rim 17 (Fig. 5). The mounting carrying the spigot 6 is then withdrawn from the contact and the glass annealed. Instead of being formed with a central aperture, the contact may be of the type provided with a central stud and the spigot 6 is then shaped to fit over the stud and closely adjacent the inner conical surface of the contact.
GB2730254A 1954-09-21 1954-09-21 Improvements in or relating to methods of sealing a metal contact element into a glass wall Expired GB773226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2730254A GB773226A (en) 1954-09-21 1954-09-21 Improvements in or relating to methods of sealing a metal contact element into a glass wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2730254A GB773226A (en) 1954-09-21 1954-09-21 Improvements in or relating to methods of sealing a metal contact element into a glass wall

Publications (1)

Publication Number Publication Date
GB773226A true GB773226A (en) 1957-04-24

Family

ID=10257365

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2730254A Expired GB773226A (en) 1954-09-21 1954-09-21 Improvements in or relating to methods of sealing a metal contact element into a glass wall

Country Status (1)

Country Link
GB (1) GB773226A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632327A (en) * 1968-05-07 1972-01-04 Nippon Electric Co Machine for planting a refractory piece in a sheetlike thermoplastic mass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632327A (en) * 1968-05-07 1972-01-04 Nippon Electric Co Machine for planting a refractory piece in a sheetlike thermoplastic mass

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