GB509507A - Improvements in and relating to vacuum-tight connections between metal and ceramic parts - Google Patents

Improvements in and relating to vacuum-tight connections between metal and ceramic parts

Info

Publication number
GB509507A
GB509507A GB1952/38A GB195238A GB509507A GB 509507 A GB509507 A GB 509507A GB 1952/38 A GB1952/38 A GB 1952/38A GB 195238 A GB195238 A GB 195238A GB 509507 A GB509507 A GB 509507A
Authority
GB
United Kingdom
Prior art keywords
metal
ceramic
parts
insulator
lower portion
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
GB1952/38A
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 GB509507A publication Critical patent/GB509507A/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

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

509,507. Uniting metal to ceramic material. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 20, 1938, No. 1952. Convention date, Jan. 21, 1937. [Class 36] A vacuum-tight connection between overlapping ceramic and metal parts 1, 5 is formed by providing between the parts a gap stepped to form a narrow lower portion 8 and an enlarged upper portion 7, inserting in the upper portion just sufficient soldering medium 15 to fill the lower portion, assembling the parts together and then heating them to cause the soldering medium to run into the lower portion of the gap. In the construction shown, the ceramic body constitutes an insulator for a lead-in conductor 2 of a mercury vapour discharge vessel, the insulator being carried by a metal tube 6 welded to the vessel 4 and sealed to the ceramic insulator in a manner similar to the metal part 5. The conductor 2 is carried by a cap 3 welded to the metal part 5. To prevent attack of the solder 15 by mercury vapour, seals 9, 10 may be disposed adjacent the solder, the seals consisting either of asbestos, or of vitreous material, such as a mixture of talcum and borax, fused between the metal and ceramic parts.
GB1952/38A 1937-01-21 1938-01-20 Improvements in and relating to vacuum-tight connections between metal and ceramic parts Expired GB509507A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE509507X 1937-01-21

Publications (1)

Publication Number Publication Date
GB509507A true GB509507A (en) 1939-07-18

Family

ID=6547218

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1952/38A Expired GB509507A (en) 1937-01-21 1938-01-20 Improvements in and relating to vacuum-tight connections between metal and ceramic parts

Country Status (1)

Country Link
GB (1) GB509507A (en)

Similar Documents

Publication Publication Date Title
GB514264A (en) Improvements in and relating to electric lamps and the like
US2212556A (en) Method of manufacturing electric discharge tubes
US2121590A (en) Vacuum-and gas-tight vessel for electric apparatus
US1560690A (en) Electron-discharge device
GB533107A (en) Improvements in and relating to methods of exhausting and sealing evacuated envelopes having a metal portion in which the seal is effected
GB509507A (en) Improvements in and relating to vacuum-tight connections between metal and ceramic parts
GB495165A (en) Improvements relating to the envelopes of and leads in high frequency electron discharge tubes
GB950475A (en) Improvements in electric discharge lamps
US1930090A (en) Gaseous electric discharge device
GB533106A (en) Improvements in and relating to methods of exhausting and sealing envelopes having a metal portion to which the seal is applied
GB469978A (en) Improvements in or relating to quartz to metal joints
GB692299A (en) Improvements in and relating to electric incandescent lamps
GB490627A (en) Improvements relating to electric discharge tubes
GB418906A (en) Improvements relating to seals for current leads into quartz vessels
GB442417A (en) Improvements in and relating to glass-to-metal seals
US2340460A (en) Tube
US1918794A (en) Mercury switch
GB511356A (en) Improvements in and relating to vacuum-tight seals
US2229772A (en) Vacuum tube device
GB474706A (en) Improvements relating to glass-to-metal seals
GB676679A (en) Improvements in and relating to electrode seals
GB448727A (en) Improvements in and relating to glass to metal seals
GB478018A (en) Improvements in or relating to the sealing of electric conductors through quartz
GB506562A (en) Improvements in gas-tight seals whereby electric conductors pass into a vitreous envelope
GB462485A (en) Improvements in or relating to the sealing of electrical conductors through quartz envelopes