GB653886A - Improvements relating to envelopes for discharge devices, especially cathode ray tubes - Google Patents

Improvements relating to envelopes for discharge devices, especially cathode ray tubes

Info

Publication number
GB653886A
GB653886A GB2432448A GB2432448A GB653886A GB 653886 A GB653886 A GB 653886A GB 2432448 A GB2432448 A GB 2432448A GB 2432448 A GB2432448 A GB 2432448A GB 653886 A GB653886 A GB 653886A
Authority
GB
United Kingdom
Prior art keywords
discharge devices
glass
envelopes
cathode ray
metal
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
GB2432448A
Inventor
Ronald Henry Colborne
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB2432448A priority Critical patent/GB653886A/en
Publication of GB653886A publication Critical patent/GB653886A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
    • 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
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/08—Vessels; Containers; Shields associated therewith; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

653,886. Electric discharge devices. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Sept. 16, 1948, No. 24324. [Class 39 (i)] In a gas-discharge device having an envelope of metal sealed to glass-the metal is coated internally with a substance which will not oxidize at temperatures below 500‹ to 600‹ C. The invention is described with particular reference to the manufacture of a cathode-ray tube, the metal part being of frusto-conical shape having a glass wall fused to the wider end and a glass stem to the narrower. The envelope may be formed of mild steel although nickel-iron, chrome-iron, or nickel or copper alloys may be used. The coating may be of chromium rhodium or vitreous enamels ; the chromium for example being deposited electrically and the vitreous enamel sprayed and then fired to harden.
GB2432448A 1948-09-16 1948-09-16 Improvements relating to envelopes for discharge devices, especially cathode ray tubes Expired GB653886A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2432448A GB653886A (en) 1948-09-16 1948-09-16 Improvements relating to envelopes for discharge devices, especially cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2432448A GB653886A (en) 1948-09-16 1948-09-16 Improvements relating to envelopes for discharge devices, especially cathode ray tubes

Publications (1)

Publication Number Publication Date
GB653886A true GB653886A (en) 1951-05-30

Family

ID=10209914

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2432448A Expired GB653886A (en) 1948-09-16 1948-09-16 Improvements relating to envelopes for discharge devices, especially cathode ray tubes

Country Status (1)

Country Link
GB (1) GB653886A (en)

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