GB925023A - Improvements in or relating to methods of and apparatus for internally coating hollow vessels - Google Patents

Improvements in or relating to methods of and apparatus for internally coating hollow vessels

Info

Publication number
GB925023A
GB925023A GB2866060A GB2866060A GB925023A GB 925023 A GB925023 A GB 925023A GB 2866060 A GB2866060 A GB 2866060A GB 2866060 A GB2866060 A GB 2866060A GB 925023 A GB925023 A GB 925023A
Authority
GB
United Kingdom
Prior art keywords
vessel
powder
tube
lamp bulb
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
GB2866060A
Inventor
Ronald Arthur Laurie Mason
Evan Herbert Nelson
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.)
General Electric Co PLC
Original Assignee
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2866060A priority Critical patent/GB925023A/en
Publication of GB925023A publication Critical patent/GB925023A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/005—Methods for coating the surface of the envelope

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Abstract

925,023. Coating the inside of hollow vessels. GENERAL ELECTRIC CO. Ltd. Aug. 8, 1961 [Aug. 18, 1960], No. 28660/60. Class 117. [Also in Group XL (a)] In electrostatically coating the inner surface of a hollow vessel, such as a lamp bulb 24, with a powdered material, such as silica, magnesium fluoro-germanate phosphor or coloured glazing, the powder 29 is blown into the vessel from a reservoir tube 1 extending coaxially within and beneath the vessel, the tube 1 supporting the powder 29 together with a supply of milling elements 23, such as glass ballotini, on a diffusing pad 6 through which the gas (air) is fed at a rate, controlled by a valve 5, sufficient only to entrain powder particles below a predetermined size, the larger particles being broken down by circulation with the ballotini for eventual entrainment in the gas stream and delivery within the vessel. The invention allegedly provides a more uniform coating. The pad 6 may be of glass fibre or loosely sintered glass or ceramic particles. The apparatus particularly described is that described in Specification 925,022 which provides for reciprocation of the lamp bulb axially of the tube at different rates at different relative axial positions of the lamp bulb and the tube to provide for delivery of powder commensurate with the size of the zone being coated. Specification 925,021 also is referred to.
GB2866060A 1960-08-18 1960-08-18 Improvements in or relating to methods of and apparatus for internally coating hollow vessels Expired GB925023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2866060A GB925023A (en) 1960-08-18 1960-08-18 Improvements in or relating to methods of and apparatus for internally coating hollow vessels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2866060A GB925023A (en) 1960-08-18 1960-08-18 Improvements in or relating to methods of and apparatus for internally coating hollow vessels

Publications (1)

Publication Number Publication Date
GB925023A true GB925023A (en) 1963-05-01

Family

ID=10279116

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2866060A Expired GB925023A (en) 1960-08-18 1960-08-18 Improvements in or relating to methods of and apparatus for internally coating hollow vessels

Country Status (1)

Country Link
GB (1) GB925023A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT384911B (en) * 1982-09-22 1988-01-25 Tungsram Reszvenytarsasag DEVICE FOR ELECTROSTATICALLY COATING LIGHT SOURCE BELLS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT384911B (en) * 1982-09-22 1988-01-25 Tungsram Reszvenytarsasag DEVICE FOR ELECTROSTATICALLY COATING LIGHT SOURCE BELLS

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