GB452854A - Improvements in and relating to methods of sealing off evacuated containers - Google Patents

Improvements in and relating to methods of sealing off evacuated containers

Info

Publication number
GB452854A
GB452854A GB3373334A GB3373334A GB452854A GB 452854 A GB452854 A GB 452854A GB 3373334 A GB3373334 A GB 3373334A GB 3373334 A GB3373334 A GB 3373334A GB 452854 A GB452854 A GB 452854A
Authority
GB
United Kingdom
Prior art keywords
tube
bead
leading
wire
exhausting
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
GB3373334A
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
Priority to FR781676D priority Critical patent/FR781676A/en
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB3373334A priority patent/GB452854A/en
Publication of GB452854A publication Critical patent/GB452854A/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
    • 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
    • H01J9/40—Closing vessels

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

452,854. Making electric incandescent lamps. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Nov. 23, 1934, No. 33733. Void [Abridged as open to inspection under Sect. 91 of the Acts, May 27, 1935]. [Class 39 (ii)] A method of sealing a leading-ir wire within the exhausting-tube of an electric lamp, radio tube, or similar device comprises the step: of (a) fusing a bead of plastic material around the leading-in wire, (b) inserting the leading-in wire within the exhausting tube so that the bead is located therein (c) evacuating the bulb through the tube and (d) heating the tube adjacent to the bead to fuse the tube and bead together. The Figure shows a double-ended electric incandescent lamp wilh a leading-in wire 19 sealed into one end 23, a leading-in wire 20 located within the exhausting tube 24 at the other end being surrounded by a bead of glass 22 The leading-in wires and glass bead have substantially the same coefficient of expansion as the bulb 21, the melting point of the bead, however, being less than that of the tube. Fires are directed upon the part of the exhausting tube adjacent to the bead 22 to seal the tube and bead together while the lamp is still closed off by the exhausting mechanism.
GB3373334A 1934-11-23 1934-11-23 Improvements in and relating to methods of sealing off evacuated containers Expired GB452854A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR781676D FR781676A (en) 1934-11-23 1934-11-22 Method of manufacturing electric lamps and similar devices
GB3373334A GB452854A (en) 1934-11-23 1934-11-23 Improvements in and relating to methods of sealing off evacuated containers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3373334A GB452854A (en) 1934-11-23 1934-11-23 Improvements in and relating to methods of sealing off evacuated containers

Publications (1)

Publication Number Publication Date
GB452854A true GB452854A (en) 1935-05-27

Family

ID=10356758

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3373334A Expired GB452854A (en) 1934-11-23 1934-11-23 Improvements in and relating to methods of sealing off evacuated containers

Country Status (2)

Country Link
FR (1) FR781676A (en)
GB (1) GB452854A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE860094C (en) * 1939-06-03 1952-12-18 Sueddeutsche Telefon App Process for the production of electron tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE860094C (en) * 1939-06-03 1952-12-18 Sueddeutsche Telefon App Process for the production of electron tubes

Also Published As

Publication number Publication date
FR781676A (en) 1935-05-20

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