GB468531A - Method of applying luminescent substances to the surface of a vitreous body - Google Patents

Method of applying luminescent substances to the surface of a vitreous body

Info

Publication number
GB468531A
GB468531A GB10604/36A GB1060436A GB468531A GB 468531 A GB468531 A GB 468531A GB 10604/36 A GB10604/36 A GB 10604/36A GB 1060436 A GB1060436 A GB 1060436A GB 468531 A GB468531 A GB 468531A
Authority
GB
United Kingdom
Prior art keywords
applying
atmospheres
april
binder
coated
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
GB10604/36A
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
General Electric Co PLC
Original Assignee
British Thomson Houston Co Ltd
General Electric Co PLC
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, General Electric Co PLC filed Critical British Thomson Houston Co Ltd
Publication of GB468531A publication Critical patent/GB468531A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/221—Applying luminescent coatings in continuous layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

468,531. Fluorescent screens. BRITISH THOMSON-HOUSTON CO., Ltd., and GENERAL ELECTRIC CO., Ltd. April 9, 1936, No. 10604. Convention date, April 11, 1935. Drawings to Specification. [Class 98 (i)] [Also in Group XXIII] In applying a coating of luminescent material to a vitreous surface within or forming part of a gas or vapour filled electric discharge tube, the vitreous body is coated with the material, preferably by applying the powdered material to a layer of binder such as glycerine, and the whole surface of the body is then subjected to a gas pressure above 1À25 atmospheres, usually of the order of 10 or 20 atmospheres whilst heated to a temperature at which it is soft. The material thus becomes embedded in the surface and the binder is evaporated, the resulting vapour being removed by finally evacuating the electrically heated drum in which the body is subjected to the gas pressure. During the heating, the drum is rotated to prevent distortion of the body by gravity. The interior surface of the envelope of a discharge lamp may be coated by this process, and the creation of pressure and a vacuum may be repeated several times. Specification 421,955 is referred to.
GB10604/36A 1935-04-11 1936-04-09 Method of applying luminescent substances to the surface of a vitreous body Expired GB468531A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE468531X 1935-04-11

Publications (1)

Publication Number Publication Date
GB468531A true GB468531A (en) 1937-07-07

Family

ID=6540862

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10604/36A Expired GB468531A (en) 1935-04-11 1936-04-09 Method of applying luminescent substances to the surface of a vitreous body

Country Status (1)

Country Link
GB (1) GB468531A (en)

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