GB348848A - Improvements in gas-tight seals for electric conductors - Google Patents

Improvements in gas-tight seals for electric conductors

Info

Publication number
GB348848A
GB348848A GB12431/30A GB1243130A GB348848A GB 348848 A GB348848 A GB 348848A GB 12431/30 A GB12431/30 A GB 12431/30A GB 1243130 A GB1243130 A GB 1243130A GB 348848 A GB348848 A GB 348848A
Authority
GB
United Kingdom
Prior art keywords
electrode
cap
connector
glass
soldered
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
GB12431/30A
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 GB348848A publication Critical patent/GB348848A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J13/00Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
    • H01J13/02Details
    • H01J13/26Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors

Landscapes

  • Joining Of Glass To Other Materials (AREA)
  • Spark Plugs (AREA)

Abstract

348,848. Discharge apparatus ; leading-in insulators. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Schmidt, A. ; 1147, Parkwood Boulevard, Schenectady, New York, U.S.A.) April 22, 1930, No. 12431. Convention date, April 23, 1929. [Class 36.] Mercury arc rectifiers, hot cathode rectifiers, &c., are provided with a seal consisting of glass 9 cast between two cylindrical metal members 1, 3, the latter of which supports an electrode 7, but is spaced therefrom. The member 1 is made of a metal having a coefficient of expansion greater than that of the glass, such as machine steel, and is copper plated on the inside to provide a surface which is wetted by glass when hot. The member 3 is formed of chrome iron. A soapstone spacer and insulator 10 retains the electrode 7 in position. The electrode 7 may be screwed into a boss 5 integral with the cap 4 which is welded to the member 3, or the electrode and connector 8 may be butt welded to opposite sides of the cap 4. Fig. 3 shows a.modified form of connector 8b which is soldered to a cap 4b soldered to the member 3b. The electrode 7 screws into a plug 5b. In a further construction in which no connector is required directly outside the seal the electrode is simply butt welded to the closed end of the member 3.
GB12431/30A 1929-04-23 1930-04-22 Improvements in gas-tight seals for electric conductors Expired GB348848A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US348848XA 1929-04-23 1929-04-23

Publications (1)

Publication Number Publication Date
GB348848A true GB348848A (en) 1931-05-21

Family

ID=21879205

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12431/30A Expired GB348848A (en) 1929-04-23 1930-04-22 Improvements in gas-tight seals for electric conductors

Country Status (1)

Country Link
GB (1) GB348848A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750154C (en) * 1935-03-15 1944-12-16 Rca Corp Device for cooling for partly glass and partly metal discharge tubes of higher performance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750154C (en) * 1935-03-15 1944-12-16 Rca Corp Device for cooling for partly glass and partly metal discharge tubes of higher performance

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