GB1158487A - Coating Removal Device in the manufacture of Cathode Ray Tubes - Google Patents
Coating Removal Device in the manufacture of Cathode Ray TubesInfo
- Publication number
- GB1158487A GB1158487A GB42404/66A GB4240466A GB1158487A GB 1158487 A GB1158487 A GB 1158487A GB 42404/66 A GB42404/66 A GB 42404/66A GB 4240466 A GB4240466 A GB 4240466A GB 1158487 A GB1158487 A GB 1158487A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sidewall
- lacquer
- face plate
- rollers
- tracking means
- 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
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
- H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
-
- 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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/28—Luminescent screens with protective, conductive or reflective layers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
1,158,487. Luminescent screens. SYLVANIA ELECTRIC PRODUCTS, Inc. 22 Sept., 1966 [29 Sept., 1965 (2)], No. 42404/66. Heading H1D. In a process of applying an aluminium backing layer to the cathodo-luminescent screen 19 and surrounding sidewalls 15 of a cathode ray tube comprising applying first a layer of lacquer 21, removing the lacquer from the sidewall portion of the tube face plate, covering the entire inner surface of the face plate with an aluminium film and then baking to remove volatile constituents, the lacquer 21 is removed from the sidewall 15 by rotating horizontally a freshly lacquered face plate 11, with its inner surface facing downwards, relative to a stationary nozzle 23 which traverses the periphery of the sidewall at a constant distance to direct at a constant angle and pressure a jet of flushing liquid 27 on to the sidewall such that a constant terminal formation of liquid 39 results which completely flushes the lacquer layer from the sidewall before the lacquer has had time to form a film. The nozzle 23 is mounted in a panel tracking means 49 which is maintained a fixed distance from the sidewall by two tracking rollers 151, and the flushing liquid, which may be water, is supplied through the rod 107 which supports tracking means 49. The lacquer should not form a film too quickly-the mixture of xylene and toluene in which 4.6 to 5% by weight of acrylic resin solids and butyl phthalate plasticizer is dissolved is suitable As shown in Figs. 4 and 5, the face plate 11 is initially temporarily held on a number of panel rests 79 prior to being mounted without distortion by retainers 93 and pressure retainer 95 on an annular disc 51 which in turn is mounted on a base 61 by a number of vertical sets of rollers 55. Lateral movement of disc 51 is limited by horizontal rollers 63 and the disc 51 is rotated about vertical axis 104 by a chain 69 and drive mechanism 67. During the mounting of the face plate the tracking means 49, which are mounted on rods 107 and pivoted about post 109, are pushed towards the centre of the disc 51 by the plungers 113 of horizontal pressure means 111 against springs 117, which normally retain the rollers 151 of tracking means 49 against sidewall 15. A drainage well 161 is provided to dispose of the flushing effluence. During the tracking of the nozzle 23 round the sidewall 115 the jet of flushing liquid 27 is maintained at a constant angle to the sidewall and the head of the tracking means may swivel to have limited arcuate movement so that it can negotiate the corners of a rectangular tube face plate whilst maintaining constant spacing therefrom, Fig. 8 (not shown). The sequence of operations may be programmed and automatically controlled.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US49127365A | 1965-09-29 | 1965-09-29 | |
US491131A US3326224A (en) | 1965-09-29 | 1965-09-29 | Coating removal device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1158487A true GB1158487A (en) | 1969-07-16 |
Family
ID=27050318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB42404/66A Expired GB1158487A (en) | 1965-09-29 | 1966-09-22 | Coating Removal Device in the manufacture of Cathode Ray Tubes |
Country Status (3)
Country | Link |
---|---|
US (2) | US3326224A (en) |
DE (1) | DE1564724A1 (en) |
GB (1) | GB1158487A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2517469A1 (en) * | 1981-12-02 | 1983-06-03 | Videocolor | Cleaning appts. for smears on internal TV tube screen edges - removes excess chemicals with articulated cleaning head moved by system of pulleys, cords and counterweights |
FR2531805A1 (en) * | 1981-02-19 | 1984-02-17 | Videocolor Sa | Removing protective plastic films from CRT screen support |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4039701A (en) * | 1971-10-02 | 1977-08-02 | U.S. Philips Corporation | Method of metallizing a screen having a luminescent layer |
US3873365A (en) * | 1973-03-21 | 1975-03-25 | Gte Sylvania Inc | Apparatus for cleaning seal edge regions of cathode ray tube panels |
NL7510274A (en) * | 1975-09-01 | 1977-03-03 | Philips Nv | PROCEDURE FOR MANUFACTURE OF A CATHODE NOZZLE TUBE WITH AN INTERNAL CONDUCTIVE COVER, DEVICE FOR PERFORMING THE METHOD AND TUBE OBTAINED ACCORDING TO THIS PROCESS. |
US4351265A (en) * | 1981-02-19 | 1982-09-28 | Rca Corporation | System for applying a liquid to the studs of a color kinescope faceplate panel |
NL8602717A (en) * | 1986-10-29 | 1988-05-16 | Philips Nv | METHOD FOR MANUFACTURING AN ELECTRON BEAM TUBE AND SO MANUFACTURED ELECTRON BEAM TUBE. |
KR920005770Y1 (en) * | 1990-05-25 | 1992-08-21 | 삼성전관 주식회사 | Pannel washing equipment of crt |
JPH04129129A (en) * | 1990-09-20 | 1992-04-30 | Sony Corp | Manufacture of cathode-ray tube |
JP3503263B2 (en) * | 1995-05-15 | 2004-03-02 | ソニー株式会社 | Manufacturing method of cathode ray tube |
KR100189838B1 (en) * | 1996-07-30 | 1999-06-01 | 손욱 | A panel cleaning apparatus of c.r.t. |
DE19638951B4 (en) * | 1996-09-16 | 2006-04-20 | Samsung Sdi Germany Gmbh | Method and apparatus for optimizing phosphor coating in picture tube production |
DE60004622T2 (en) * | 1999-05-21 | 2004-06-17 | Koninklijke Philips Electronics N.V. | METHOD AND DEVICE FOR PAINTING THE INSIDE OF A SCREEN |
US7041231B2 (en) * | 2003-01-06 | 2006-05-09 | Triumph Brands, Inc. | Method of refurbishing a transition duct for a gas turbine system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1886503A (en) * | 1930-08-05 | 1932-11-08 | Harry K Shockey | Machine for reclaiming worn brake drums |
US2763564A (en) * | 1953-11-25 | 1956-09-18 | Gen Electric | Means and methods for processing cathode ray tube bulbs |
US2907688A (en) * | 1955-09-01 | 1959-10-06 | Philco Corp | Improved washing operation for cathode ray tube manufacturing process |
US2880697A (en) * | 1957-04-19 | 1959-04-07 | Corning Glass Works | Coating apparatus |
US2987415A (en) * | 1960-07-21 | 1961-06-06 | Gen Electric | Method of filming cathode ray tubes |
-
1965
- 1965-09-29 US US491131A patent/US3326224A/en not_active Expired - Lifetime
- 1965-09-29 US US491273A patent/US3473942A/en not_active Expired - Lifetime
-
1966
- 1966-09-22 GB GB42404/66A patent/GB1158487A/en not_active Expired
- 1966-09-28 DE DE19661564724 patent/DE1564724A1/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2531805A1 (en) * | 1981-02-19 | 1984-02-17 | Videocolor Sa | Removing protective plastic films from CRT screen support |
FR2517469A1 (en) * | 1981-12-02 | 1983-06-03 | Videocolor | Cleaning appts. for smears on internal TV tube screen edges - removes excess chemicals with articulated cleaning head moved by system of pulleys, cords and counterweights |
Also Published As
Publication number | Publication date |
---|---|
US3473942A (en) | 1969-10-21 |
DE1564724A1 (en) | 1969-12-11 |
US3326224A (en) | 1967-06-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |