GB588969A - Improvements in and relating to electrical discharge devices - Google Patents

Improvements in and relating to electrical discharge devices

Info

Publication number
GB588969A
GB588969A GB6762/43A GB676243A GB588969A GB 588969 A GB588969 A GB 588969A GB 6762/43 A GB6762/43 A GB 6762/43A GB 676243 A GB676243 A GB 676243A GB 588969 A GB588969 A GB 588969A
Authority
GB
United Kingdom
Prior art keywords
seal
conductor
container
resistant
glass
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
GB6762/43A
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 GB588969A publication Critical patent/GB588969A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J5/40—End-disc seals, e.g. flat header
    • H01J5/42—End-disc seals, e.g. flat header using intermediate 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
    • H01J2893/0034—Lamp bases

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

588,969. Thermionic valves. BHITISH THOMSON-HOUSTON CO., Ltd. April 29, 1943, No. 6702. Convention date, May 7, 1942. [Class 39 (i)] In a container 10 having an electrode 18 within and a lead-in conductor 15 extending through a metallic wall part, a two-part seal is provided for the conductor, one part composed of metal eyelet 31 and glass part 24 being highly resistant to the filling of the chamber 10 and the second part composed of a similar metal eyelet 33 and glass part 25 being resistant to air, each seal shielding the other from contact with the medium to which it is not specially resistant. In the rectifier shown as an example, the steel container 10 which is also the anode, contains caesium vapour. The seal 24 is formed of borosilicate-barium glass having low alkali and silica content and the metal part co-operating in the seal is a nickeliron-cobalt alloy. The container may be exhausted through tube 34 and the space between the seals may be exhausted through tube 35. This space may contain a body 41 of graphite, tin oxide or copper oxide to absorb caesium. In modified seals, a thin metal section may be interposed between conductor 15 and the sealing material 24 or 25 to relieve strain. Specification 545,426, [Group XXXVI], is referred to.
GB6762/43A 1942-05-07 1943-04-29 Improvements in and relating to electrical discharge devices Expired GB588969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US588969XA 1942-05-07 1942-05-07

Publications (1)

Publication Number Publication Date
GB588969A true GB588969A (en) 1947-06-09

Family

ID=22019586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6762/43A Expired GB588969A (en) 1942-05-07 1943-04-29 Improvements in and relating to electrical discharge devices

Country Status (1)

Country Link
GB (1) GB588969A (en)

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