GB265711A - Improvements in or relating to the manufacture of evacuated vessels such as thermionic valves - Google Patents

Improvements in or relating to the manufacture of evacuated vessels such as thermionic valves

Info

Publication number
GB265711A
GB265711A GB2933025A GB2933025A GB265711A GB 265711 A GB265711 A GB 265711A GB 2933025 A GB2933025 A GB 2933025A GB 2933025 A GB2933025 A GB 2933025A GB 265711 A GB265711 A GB 265711A
Authority
GB
United Kingdom
Prior art keywords
tube
thimble
relating
manufacture
fused
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
GB2933025A
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.)
STEPHEN MICHAEL DUKE
General Electric Co PLC
Original Assignee
STEPHEN MICHAEL DUKE
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 STEPHEN MICHAEL DUKE, General Electric Co PLC filed Critical STEPHEN MICHAEL DUKE
Priority to GB2933025A priority Critical patent/GB265711A/en
Publication of GB265711A publication Critical patent/GB265711A/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
    • H01J9/40—Closing vessels

Landscapes

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

Abstract

265,711. General Electric Co., Ltd., and Duke, S. M. Nov. 20, 1925. Vacuum tubes.- A method of sealing off the wide vitreous exhaust tube of an evacuated vessel such as a thermionic valve, consists in inserting a support, such as a copper thimble, in the tube at the place at which the tube is to be sealed off, the tube being then fused and sealed close to the support. The vessel 1 is exhausted through the tube 2 by means of a pump connected at 3, and the thimble 6 is moved by a piece of iron 7 and a magnet, not shown, along the tube until the end rests against a constriction 8. The iron is withdrawn and the tube fused about the rounded end of the thimble.
GB2933025A 1925-11-20 1925-11-20 Improvements in or relating to the manufacture of evacuated vessels such as thermionic valves Expired GB265711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2933025A GB265711A (en) 1925-11-20 1925-11-20 Improvements in or relating to the manufacture of evacuated vessels such as thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2933025A GB265711A (en) 1925-11-20 1925-11-20 Improvements in or relating to the manufacture of evacuated vessels such as thermionic valves

Publications (1)

Publication Number Publication Date
GB265711A true GB265711A (en) 1927-02-17

Family

ID=10289837

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2933025A Expired GB265711A (en) 1925-11-20 1925-11-20 Improvements in or relating to the manufacture of evacuated vessels such as thermionic valves

Country Status (1)

Country Link
GB (1) GB265711A (en)

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