GB484511A - Improvements in surface coatings of powdered material and in the method of applying the same - Google Patents

Improvements in surface coatings of powdered material and in the method of applying the same

Info

Publication number
GB484511A
GB484511A GB35251/36A GB3525136A GB484511A GB 484511 A GB484511 A GB 484511A GB 35251/36 A GB35251/36 A GB 35251/36A GB 3525136 A GB3525136 A GB 3525136A GB 484511 A GB484511 A GB 484511A
Authority
GB
United Kingdom
Prior art keywords
sulphur
layer
tube
products
powder
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
GB35251/36A
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.)
ROGERS RADIO TUBES Ltd
Original Assignee
ROGERS RADIO TUBES 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 ROGERS RADIO TUBES Ltd filed Critical ROGERS RADIO TUBES Ltd
Publication of GB484511A publication Critical patent/GB484511A/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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/22—Luminous paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Luminescent Compositions (AREA)

Abstract

484,511. Ornamenting. ROGERS RADIO TUBES, Ltd. Dec. 23, 1936, No. 35251. Convention date, Jan. 11. [Class 93] [Also in Group XX] A coating of powder is formed on a surface as of metal or glass, e.g. a luminescent coating on a cathode-ray tube, by cleaning the surface, exposing it to the products of incomplete combustion of a compound of sulphur in order to form by condensation a layer of sulphur on the surface, dusting finely powdered material evenly on the layer, removing excess of powder, and then heating to evaporate the sulphur layer, so that the powder coating is left adhering directly to the surface. The Figure shows an apparatus wherein the end of a cleaned cathode-ray tube is coated with sulphur produced by burning carbon bisulphide contained in a holder 4 heated electrically by a coil 5, in a slow draught produced by an aspirator attached at 8, the products of combustion being drawn up a tube 2 with a jacket 7 leading to the aspirator tube 8 and being dispersed over the end wall of the ray tube 1 by a plug 6 on the top of tube 2. After wiping off any undesired sulphur at the edge of the layer, powdered luminescent material such as synthetic willemite activated with manganese, or zinc sulphide from which copper and other impurities have been removed, is dusted on evenly the excess wiped off, and heat applied to evaporate the sulphur. Specification 458,635, [Group XX], is referred to. The Specification as open to inspection under Sect. 91 states also that the condensation layer may be formed by exposure to the products of incomplete combustion of compounds of other elements. This subject-matter does not appear in the Specification as accepted.
GB35251/36A 1936-01-11 1936-12-23 Improvements in surface coatings of powdered material and in the method of applying the same Expired GB484511A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US484511XA 1936-01-11 1936-01-11

Publications (1)

Publication Number Publication Date
GB484511A true GB484511A (en) 1938-05-06

Family

ID=21954652

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35251/36A Expired GB484511A (en) 1936-01-11 1936-12-23 Improvements in surface coatings of powdered material and in the method of applying the same

Country Status (1)

Country Link
GB (1) GB484511A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894840A (en) * 1955-06-14 1959-07-14 Haloid Xerox Inc Method for fixing xerographic images

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894840A (en) * 1955-06-14 1959-07-14 Haloid Xerox Inc Method for fixing xerographic images

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