GB788553A - Improvements in or relating to methods of applying internal coatings to envelopes for discharge devices - Google Patents

Improvements in or relating to methods of applying internal coatings to envelopes for discharge devices

Info

Publication number
GB788553A
GB788553A GB526255A GB526255A GB788553A GB 788553 A GB788553 A GB 788553A GB 526255 A GB526255 A GB 526255A GB 526255 A GB526255 A GB 526255A GB 788553 A GB788553 A GB 788553A
Authority
GB
United Kingdom
Prior art keywords
envelope
shaft
coating material
axis
coating
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
GB526255A
Inventor
Anthony Victor De Vere Krause
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.)
Cinema Television Ltd
Original Assignee
Cinema Television 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 Cinema Television Ltd filed Critical Cinema Television Ltd
Priority to GB526255A priority Critical patent/GB788553A/en
Publication of GB788553A publication Critical patent/GB788553A/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Coating Apparatus (AREA)

Abstract

<PICT:0788553/III/1> <PICT:0788553/III/2> Coating material, e.g. a colloidal graphite suspension, is applied to the axially symmetrical walls of the envelope of an electron discharge device by supporting the envelope with its axis vertical, introducing a member carried upon a shaft which is rotated about a vertical axis and has a surface extending perpendicularly outwardly from the said axis, and applying to the surface a dispersion of the coating material, whereby it is distributed to the inner walls of the envelope. Means may be provided for producing relative axial movement between the envelope and the coating member. As shown, in Fig. 4 the envelope 18 is carried by a clamp 19 attached to a nut 21 on a lead-screw 22. A shaft 23 is mounted coaxially with the envelope 18 for rotation by an electric motor 31, which also rotates the lead-screw 22 through pulleys 33 and 35 and belt 34. The shaft 23 carries a dished member 36 to which coating material is applied through a tube 37. Alternatively, as in Fig. 5, the shaft 38 is made hollow, and the supply tube 40 passes along its axis. The coating material may be applied as a series of spaced bands, or as a continuous coating.
GB526255A 1955-02-22 1955-02-22 Improvements in or relating to methods of applying internal coatings to envelopes for discharge devices Expired GB788553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB526255A GB788553A (en) 1955-02-22 1955-02-22 Improvements in or relating to methods of applying internal coatings to envelopes for discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB526255A GB788553A (en) 1955-02-22 1955-02-22 Improvements in or relating to methods of applying internal coatings to envelopes for discharge devices

Publications (1)

Publication Number Publication Date
GB788553A true GB788553A (en) 1958-01-02

Family

ID=9792780

Family Applications (1)

Application Number Title Priority Date Filing Date
GB526255A Expired GB788553A (en) 1955-02-22 1955-02-22 Improvements in or relating to methods of applying internal coatings to envelopes for discharge devices

Country Status (1)

Country Link
GB (1) GB788553A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654895A (en) * 1969-08-15 1972-04-11 Texas Instruments Inc Apparatus for forming a refractory coating on the inner periphery of a tubular object
FR2124485A1 (en) * 1971-02-05 1972-09-22 Philips Nv
US3961599A (en) * 1971-08-12 1976-06-08 Air Products And Chemicals, Inc. Apparatus for making miniature layer resistors on insulating chips by digital controls
DE2802462A1 (en) * 1977-01-21 1978-07-27 Sony Corp METHOD AND DEVICE FOR COATING CATHODE BEAM TUBES
US4268544A (en) * 1978-04-03 1981-05-19 The Oakland Corporation Method of applying friction materials to threaded article

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654895A (en) * 1969-08-15 1972-04-11 Texas Instruments Inc Apparatus for forming a refractory coating on the inner periphery of a tubular object
FR2124485A1 (en) * 1971-02-05 1972-09-22 Philips Nv
US3961599A (en) * 1971-08-12 1976-06-08 Air Products And Chemicals, Inc. Apparatus for making miniature layer resistors on insulating chips by digital controls
DE2802462A1 (en) * 1977-01-21 1978-07-27 Sony Corp METHOD AND DEVICE FOR COATING CATHODE BEAM TUBES
US4268544A (en) * 1978-04-03 1981-05-19 The Oakland Corporation Method of applying friction materials to threaded article

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