US2744207A - Two-piece television picture tube - Google Patents

Two-piece television picture tube Download PDF

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Publication number
US2744207A
US2744207A US359615A US35961553A US2744207A US 2744207 A US2744207 A US 2744207A US 359615 A US359615 A US 359615A US 35961553 A US35961553 A US 35961553A US 2744207 A US2744207 A US 2744207A
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section
tube
neck
electron gun
screen
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Expired - Lifetime
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US359615A
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Sessions Rollie Hazel
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Individual
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    • 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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/26—Sealing together parts of vessels
    • H01J9/263—Sealing together parts of vessels specially adapted for cathode-ray tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
    • H01J31/501—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output with an electrostatic electron optic system

Definitions

  • This invention relates to the large picture tube of a television receiver, and in particular the plural type of cathode ray tube wherein the picture tube is formed of a plurality of sections with the sections positioned whereby a fluorescent layerin the section in which the electron -:gun is positioned transmits light to a photosensitive layer in the large tube.
  • this-invention is to reduce the replace ment cost of television tubes as the-part that requires replacement is the neck or electron gun and with this provided as a separate and independent unit it may be removed and replaced without replacing the large screen section of the tube.
  • this invention contemplates means for forming a television receiver tube in two sections whereby each section is sealed and wherein both the screen section and electron gun section are replaceable independently.
  • the object of this invention is, therefore, to provide means for forming the large tube of a television receiver whereby the electron gun section is adapted to be separated fromthe large end or screen section and wherein the two parts may be assembled without disturbing the large or screen section.
  • Another object of the invention is to provide a two piece television picture tube in which both the screen section and electron gun section are removable and replaceable independently and in which the tube is adapted to replace conventional television tubes in cabinets now in use.
  • pie'ce television picture tube in which both parts are removable and replaceable and in which the tube is of a simple and economical construction.
  • the invention embodies a plural type of cathode ray tube in which a fluorescent layer in a section in which the electron gun is positioned transmits light to a photosensis V :jtiye layer in another section and in which the bell.
  • shapedv section is provided with a cylindrical flange adapted to receive-one end of the neck and in which fastening elements are extended across the ends of theneck and bell shaped section for retaining the parts in assembled relation.
  • i't'g Figure 1 is a side elevational view of the two piece television picture tube with parts broken away and parts iii section illustrating fastening elements for connecting the neck to the screen section.
  • a further object of the invention is to provide a two United States Patent 2,744,207 'i atented May 1, .1956
  • Figure 2 is a detail showing a longitudinal section through the connection between the two sections of the tube with the parts shown on an enlarged scale and illuspiece television picture tube of this invention includes a neck 10, a bell shaped screen section 11, a collar 12 extended around-and spaced from one end-of the neck 10, a collar 13 positioned around and extended from a cylindrical section 14 of the section 11, rings formed with sections 15 and 16 positioned against surfaces of the collars and fastening elements, such as the springs 17 connecting the rings.
  • the neck or electron gun section 10 is sealed and one end of the neck is provided with a fluorescent layer which transmits light to the photosensitive layer 19 in the end of a I cylindrical section 20 of the bell shaped section 11.
  • the end of the neck 10 is designed to nest in the cylindrical section 14 of the bell shaped section 11 of the tube and with a gasket 21 positioned between the lenses of the two sections the lenses Will be spaced apart, as shown in Figure 1.
  • the rings formed with the sections 15 and 16 are provided with ears 22 on the sections 15 and 23 on the section 16 and these ears are provided with openings 24 and 25, respectively, to which springs 17, as shown in Figure 1, may be connected or through which bolts 26 with nuts 27 thereon may be extended to clamp the sections of the tube together.
  • the sections of the rings are adapted to be placed over the tubular sections of the parts It) and 11 of the tube and with the sections of the rings in position, bolts, as indicated by the numeral 36 are placed through the openings in the overlapping tongues and ends of the rings for securing the rings in assembled relation on the parts of the tube.
  • a neck 37 similar to the neck 10 is secured in a cylindrical flange 38 of a bell shaped screen section 39 of a television picture tube with the bolts 26, which are mounted in rings 40 and 41, and these rings are positioned against collars 42 and 43 of the screen section and neck, respectively.
  • a gasket 44 may also be placed between the sections and the adjoining end walls 45 and 46 may be ground to form lenses, as shown.
  • the electron gun in the neck section 10 may readily be separated from the large or screen section 11 of a television tube whereby the electron gun section may be removed and replaced without replacing the entire tube. It will also be understood that the screen section 11, which is preferably sealed, may also be removed and replaced without replacing the electron gun section or neck 10.
  • a two piece television picture tube comprising an elongated cylindrical electron gun section providing a neck, a fluorescent layer in one end of the neck a bell shaped section, a photosensitive layer in an end of said bell-shaped section, the end of the bell-shaped section in which the photosensitive layer is positioned being mounted in abuting relation with the end of the neck in which the fluorescent layer is positioned, said bell-shaped section having a cylindrical portion with a cylindrical flange extended therefrom and said cylindrical flange positioned to receive an end of the neck, a collar extended around the cylindrical section of the bell shaped section, a similar collar extended around the neck and spaced from the end thereof, rings positioned against the collars and fastening elements extended between the rings.
  • a television picture tube which comprises a screen section having a cylindrical portion thereon and said cylindrical portion having a cylindrical flange extended therefrom and an annular collar on the outer surface, an electron gun casing also having an annular collar on the outer surface adapted to nest in the cylindrical flange of the screen section with the annular collar spaced from the end of the flange, rings formed with connected semi-circular sections positioned around the cylindrical portion of the screen section and also around the electron gun section, and fastening elements extended between the rings for retaining the parts of the tube in assembled relation.
  • the combination which comprises a screen portion and an electron gun portion, said screen portion having a neck with an extended cylindrical flange and having a transverse section with a photosensitive layer on the inner surface, said electron gun portion having an end adapted to nest in the cylindrical flange extended from the neck of the screen portion and having a fluorescent layer on the inner surface of the end adapted to be positioned in the cylindrical flange of the screen portion whereby the fluorescent layer of the electron gun portion transmits light to the photosensitive layer of the screen portion, a gasket positioned between the end wall of the electron gun portion and end of the neck of the screen portion, and fastening elements for retaining the end of the electron gun portion in the cylindrical flange of the neck of the screen portion.

Description

y 1956 R. H. SESSIONS TWO-PIECE TELEVISION PICTURE TUBE Filed June 4, 1953 III 174! v 6 m MM Z 1 1 a a IN VENTOR.
8 s M e A m a i l mm A Wm M Z, x
This invention relates to the large picture tube of a television receiver, and in particular the plural type of cathode ray tube wherein the picture tube is formed of a plurality of sections with the sections positioned whereby a fluorescent layerin the section in which the electron -:gun is positioned transmits light to a photosensitive layer in the large tube.
The purpose of this-invention is to reduce the replace ment cost of television tubes as the-part that requires replacement is the neck or electron gun and with this provided as a separate and independent unit it may be removed and replaced without replacing the large screen section of the tube.
Failure of a television tube is due to burning out of the electron gun in the neck portion of the tube and with the parts formed in one piece it is necessary to replace the entire tube including the gun and screen should the gun burn out. Both sections are comparatively costly and with one section being replaceable without the other, the cost of repairing a television set is greatly reduced.
With this thought in mind, this invention contemplates means for forming a television receiver tube in two sections whereby each section is sealed and wherein both the screen section and electron gun section are replaceable independently.
The object of this invention is, therefore, to provide means for forming the large tube of a television receiver whereby the electron gun section is adapted to be separated fromthe large end or screen section and wherein the two parts may be assembled without disturbing the large or screen section.
Another object of the invention is to provide a two piece television picture tube in which both the screen section and electron gun section are removable and replaceable independently and in which the tube is adapted to replace conventional television tubes in cabinets now in use.
pie'ce television picture tube in which both parts are removable and replaceable and in which the tube is of a simple and economical construction.
With these and other objects and advantages in view the invention embodies a plural type of cathode ray tube in which a fluorescent layer in a section in which the electron gun is positioned transmits light to a photosensis V :jtiye layer in another section and in which the bell. shapedv section is provided with a cylindrical flange adapted to receive-one end of the neck and in which fastening elements are extended across the ends of theneck and bell shaped section for retaining the parts in assembled relation.
Other features and advantages of the invention will appear from. the following description taken in connection with the drawing, wherein:
i't'gFigure 1 is a side elevational view of the two piece television picture tube with parts broken away and parts iii section illustrating fastening elements for connecting the neck to the screen section.
A further object of the invention is to provide a two United States Patent 2,744,207 'i atented May 1, .1956
ice
Figure 2 is a detail showing a longitudinal section through the connection between the two sections of the tube with the parts shown on an enlarged scale and illuspiece television picture tube of this invention includes a neck 10, a bell shaped screen section 11, a collar 12 extended around-and spaced from one end-of the neck 10, a collar 13 positioned around and extended from a cylindrical section 14 of the section 11, rings formed with sections 15 and 16 positioned against surfaces of the collars and fastening elements, such as the springs 17 connecting the rings.
With the parts formed as illustrated in Figure 1 the neck or electron gun section 10 is sealed and one end of the neck is provided with a fluorescent layer which transmits light to the photosensitive layer 19 in the end of a I cylindrical section 20 of the bell shaped section 11.
The end of the neck 10 is designed to nest in the cylindrical section 14 of the bell shaped section 11 of the tube and with a gasket 21 positioned between the lenses of the two sections the lenses Will be spaced apart, as shown in Figure 1.
As illustrated in Figure 4 the rings formed with the sections 15 and 16 are provided with ears 22 on the sections 15 and 23 on the section 16 and these ears are provided with openings 24 and 25, respectively, to which springs 17, as shown in Figure 1, may be connected or through which bolts 26 with nuts 27 thereon may be extended to clamp the sections of the tube together.
31 'are provided with registering holes 34 and 35, respec- "tively. By this means the sections of the rings are adapted to be placed over the tubular sections of the parts It) and 11 of the tube and with the sections of the rings in position, bolts, as indicated by the numeral 36 are placed through the openings in the overlapping tongues and ends of the rings for securing the rings in assembled relation on the parts of the tube.
In the design illustrated in Figure 2 a neck 37, similar to the neck 10 is secured in a cylindrical flange 38 of a bell shaped screen section 39 of a television picture tube with the bolts 26, which are mounted in rings 40 and 41, and these rings are positioned against collars 42 and 43 of the screen section and neck, respectively. A gasket 44 may also be placed between the sections and the adjoining end walls 45 and 46 may be ground to form lenses, as shown.
With the parts formed in this manner the electron gun in the neck section 10 may readily be separated from the large or screen section 11 of a television tube whereby the electron gun section may be removed and replaced without replacing the entire tube. It will also be understood that the screen section 11, which is preferably sealed, may also be removed and replaced without replacing the electron gun section or neck 10.
It will be understood that other modifications, within the scope of the appended claims, may be made in the design and arrangement of the parts without departing from the spirit of the invention.
What is claimed is:
l. A two piece television picture tube comprising an elongated cylindrical electron gun section providing a neck, a fluorescent layer in one end of the neck a bell shaped section, a photosensitive layer in an end of said bell-shaped section, the end of the bell-shaped section in which the photosensitive layer is positioned being mounted in abuting relation with the end of the neck in which the fluorescent layer is positioned, said bell-shaped section having a cylindrical portion with a cylindrical flange extended therefrom and said cylindrical flange positioned to receive an end of the neck, a collar extended around the cylindrical section of the bell shaped section, a similar collar extended around the neck and spaced from the end thereof, rings positioned against the collars and fastening elements extended between the rings.
2. In a television picture tube, the combination which comprises a screen section having a cylindrical portion thereon and said cylindrical portion having a cylindrical flange extended therefrom and an annular collar on the outer surface, an electron gun casing also having an annular collar on the outer surface adapted to nest in the cylindrical flange of the screen section with the annular collar spaced from the end of the flange, rings formed with connected semi-circular sections positioned around the cylindrical portion of the screen section and also around the electron gun section, and fastening elements extended between the rings for retaining the parts of the tube in assembled relation.
3. In a plural type television picture tube, the combination which comprises a screen portion and an electron gun portion, said screen portion having a neck with an extended cylindrical flange and having a transverse section with a photosensitive layer on the inner surface, said electron gun portion having an end adapted to nest in the cylindrical flange extended from the neck of the screen portion and having a fluorescent layer on the inner surface of the end adapted to be positioned in the cylindrical flange of the screen portion whereby the fluorescent layer of the electron gun portion transmits light to the photosensitive layer of the screen portion, a gasket positioned between the end wall of the electron gun portion and end of the neck of the screen portion, and fastening elements for retaining the end of the electron gun portion in the cylindrical flange of the neck of the screen portion.
References Cited in the file of this patent UNITED STATES PATENTS 1,907,507 Coolidge May 9, 1933 2,058,914 Rudenberg Oct. 27, 1936 2,203,334 Labin June 4, 1940 2,617,953 Brasch Nov. 11, 1952
US359615A 1953-06-04 1953-06-04 Two-piece television picture tube Expired - Lifetime US2744207A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892087A (en) * 1956-06-14 1959-06-23 Itt Electron discharge assembly
US3099762A (en) * 1962-01-15 1963-07-30 Hertz Michael Cathode ray tube using replaceable cathode
US4872863A (en) * 1987-06-11 1989-10-10 U.S. Philips Corporation Method of fixing a cathode-ray tube cone and display window prior to sealing and a cathode-ray tube manfactured by such a method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907507A (en) * 1925-04-28 1933-05-09 Gen Electric Electron discharge device
US2058914A (en) * 1931-05-31 1936-10-27 Siemens Ag Apparatus for producing images of objects
US2203334A (en) * 1936-10-22 1940-06-04 Int Standard Electric Corp Electron discharge devcie
US2617953A (en) * 1949-06-28 1952-11-11 Electronized Chem Corp Window structure for cathode-ray tubes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907507A (en) * 1925-04-28 1933-05-09 Gen Electric Electron discharge device
US2058914A (en) * 1931-05-31 1936-10-27 Siemens Ag Apparatus for producing images of objects
US2203334A (en) * 1936-10-22 1940-06-04 Int Standard Electric Corp Electron discharge devcie
US2617953A (en) * 1949-06-28 1952-11-11 Electronized Chem Corp Window structure for cathode-ray tubes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892087A (en) * 1956-06-14 1959-06-23 Itt Electron discharge assembly
US3099762A (en) * 1962-01-15 1963-07-30 Hertz Michael Cathode ray tube using replaceable cathode
US4872863A (en) * 1987-06-11 1989-10-10 U.S. Philips Corporation Method of fixing a cathode-ray tube cone and display window prior to sealing and a cathode-ray tube manfactured by such a method

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