GB546815A - Improvements in and relating to methods of making metal-enclosed vacuum tubes - Google Patents

Improvements in and relating to methods of making metal-enclosed vacuum tubes

Info

Publication number
GB546815A
GB546815A GB12223/41A GB1222341A GB546815A GB 546815 A GB546815 A GB 546815A GB 12223/41 A GB12223/41 A GB 12223/41A GB 1222341 A GB1222341 A GB 1222341A GB 546815 A GB546815 A GB 546815A
Authority
GB
United Kingdom
Prior art keywords
parts
tin
sept
supported
conductors
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
GB12223/41A
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 GB546815A publication Critical patent/GB546815A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • 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
    • H01J5/20—Seals between parts of vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/12—Copper or alloys thereof
    • 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
    • H01J2893/0037—Solid sealing members other than lamp bases

Abstract

546,815. Making electrical devices. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 22, 1941, No. 12223. Convention date, Sept. 21, 1940. [Classes 83 (ii) and 83 (iv)] Soldering.-A sealed electrical device, comprising two container-forming iron parts joined vacuum tight and having lead-in conductors sealed through one of the parts, is made by copper plating the one part 11, sealing the conductors 21 ... 25 by applying fusible vitreous material 50, e.g. as described in Specification 536,362, [Group XXXVI], while the part 11 is at about 500 ‹C, removing the copper oxide, e.g. by a flux containing 3 parts of zinc chloride and 1 of ammonium chloride, and joining the parts by tin or solder melting at about 200‹C. The solder may be applied by dipping the other part 10 in molten tin or by electroplating it with tin before assembling the parts and the part 10 is supported by a magnet 41 outside the gas tight chamber 31 while it is evacuated and heated to at least 900‹C. by means of electric induction. The part 11 is supported and kept relatively cool by a ring 35, preferably magnetic. The part 10 is then allowed to fall on to the part 11 and, to ensure correct engagement, the base 32 may be rapped by a solenoid-operated mechanism.
GB12223/41A 1940-09-21 1941-09-22 Improvements in and relating to methods of making metal-enclosed vacuum tubes Expired GB546815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US546815XA 1940-09-21 1940-09-21

Publications (1)

Publication Number Publication Date
GB546815A true GB546815A (en) 1942-07-30

Family

ID=21992793

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12223/41A Expired GB546815A (en) 1940-09-21 1941-09-22 Improvements in and relating to methods of making metal-enclosed vacuum tubes

Country Status (1)

Country Link
GB (1) GB546815A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969129C (en) * 1944-08-30 1958-05-08 Siemens Ag A connection between current conductors and sheets through which they penetrate is produced by melting down using glass plugs as melting bodies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969129C (en) * 1944-08-30 1958-05-08 Siemens Ag A connection between current conductors and sheets through which they penetrate is produced by melting down using glass plugs as melting bodies

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