US2738501A - Picture tube support - Google Patents

Description

March 13, 1956 E. w. swANsoN PICTURE TUBE SUPPORT Filed Dec. 31, 1952 .'5 Sheets-Sheet l IN V EN TOR.

March 13, 1956 E. w. swANsoN 2,738,501

PICTURE TUBE SUPPORT Filed Deo. s1, 1952 s sheets-sheet v2 IN V EN TOR.

dagzfd 5a/Jansma March 13, 1956 E, w. swANsoN 2,738,501

PICTURE TUBE SUPPORT Filed Dec. 31, 1952 3 Sheets-Sheet 5 M f H I IN V EN TOR.

a/wcga/ 4% rj'wazzsazz a web portion 34 from opposite rear edges of which rear flanges 36 extend away from each other and are of width `decreasing toward their upper ends. The lower ends of the flanges 36 are bent slightly and continue below the webs to provide lugs 37 bolted to the rear wall at 35. The lower ends of the webs 34 are flanged laterally toward each other to provide feet 38 through which screws 39 pass for securing the beams 29 to the top wall 7. The front edges of the beams also bear flanges 41 extending toward each other.

Intermediate -their ends the beams 29 are rigidly secured to each other by a cross member 42, also of channel-shaped cross-section, the cross member additionally having end flanges 43, bolted to the web portion 31 of the beams 29, and lateral flanges 44 for the sake of rigidity.

Any convenient means may be adopted for connecting the draft rod 31 to the legs 2 8. For example, the member 31 may be bent at one end thereof to provide a hook 46. In assembly the tripod mechanism with the chassis 6, the draft member 31 is passed -through an aperture 47 in the cross member 42 until the hook portion 46 engages the member and the threaded end 32 extends through the bracket 26. Then the nut 33 is tightened against bracket 26. To resist turning of the rod 31 about its axis when the nut 33 is tightened, the hook 46 is nally bent to extend backward and to pass through a hole 50, in the cross member, spaced from the hole 47. For coupling thetube 14 to the tripod mechanism, the coil housing 23 has at its base a pair of lateral flanges 48 extending away from each other and arranged to overlie a pair of anges 49 extending laterally from the tops of the beams 29. Provision is made -to releasably and adjustably associate the coil housing with the beams 29. This is carried out by means of slots 51 in rthe flanges 48 and screws S2 which pass freely through the slots 51 but which are threaded in the flanges 49. Prior -to tightening the screws 52, the coil housing is pushed to the right to urge the picture tube into pressure engagement with the iinger 28 and while it is so disposed the screws 52 are tightened to retain this relationship between the coil hous- Aing 23 and the stop 26. Then, if need be, the nut 33 on the draft member 31 may also be tightened or loosened to slightly vary the engagement between bracket 26 and the front of the picture tube so that the position of the screen is in a desired relationship to the front of the frame 6.

In Figs. and 6 is depicted another embodiment of the present invention. This construction is desirable when the size of picture tubes does not permit a draft rod 63 to pass under it to the front of the frame. Accordingly, a draft rod 63 has at its lower end an S-shaped hook portion 64 adapted to be inserted in an aperture 67 in the top wall 68 of a chassis frame. The upper end of the draft member 68 extends through a cross member 71 bridging the beams 61, the counterparts of beams 28. Lock nuts 72, threaded on the upper end of member 63 rigidly secure it to the beams 61.

It will now be apparent that the tripod mechanism, while supporting the rear of the tube 14, also plays the role of a prop or brace to resist displacement of the picture tube away from the stop linger 26. It will also be noted that the legs 29 and 31 are attached to points, on the frame, least susceptible of deflection by the pinching operation exerted on the picture tube to secure it to the frame. This has been accomplished by securing the draft rod 31 to the frame at a point remote from the two points where the beams 28 are attached to the frame. And it is also noteworthy that the area of the top wall 7 occupied by the beams overlie but a small area of said top wall thereby affording additional room for small tubes and other components of the apparatus. As will be apparent from an examina-tion `of Fig. 6, the vertical area taken up by the beams 29 is particularly slight so that a minimum of obstruction is presentedto a service mande- Cil siring to make repairs to the chassis when it is in an open backed cabinet.

Although I have described two embodiments of my invention I am aware that numerous and extensive departures may be made therefrom without departing from the spirit or scope of the invention.

I claim:

l. In television apparatus comprising a frame having a top wall from which front, rear and side walls extend downward and a stop at the front wall extends upward for abutment by the front of a picture tube concurrently anchored in engagement with a pair of supports at either end of the front wall, the tube having a back portion converging to a cylindrical neck embraced by a coil housing in engagement with the back portion, the combination of, means by which the picture tube is supported and concurrently braced rearwardly thereof to urge it toward the stop comprising a pair of spaced-apart supports having lower end portions iixed to the frame at the junction of the top and rear wall, said supports being inclined over the top wall, means by which a releasably clamped relationship is provided between the coil housing and the upper ends of the supports, said means enabling the picture tube to be pushed against the stop when the clamped relationship is relieved and for said tube to be secured in pressure engagement with said stop when said clamped relationship is restored comprising a draft member having anchor portions at either end thereof, one of the anchor portions being anchored to the pair of supports intermediate their ends and the other of the portions being anchored to the frame at a point remote from the rear wall to resist tipping of the braces about the rear of the frame.

2. In television apparatus comprising a frame having a top wall from which front, rear and side walls extend downward and a stop at the front wall is extending upward for abutment by the front of a picture tube concurrently anchored in engagement with a pair of supports at either end of the front wall, the tube having a back portion converging to a cylindrical neck embraced by a coil housing in engagement with the back portion, the combination of, means by which the picture tube is biased toward the stop and concurrently supported rearwardly thereof comprising a pair of lspaced-apart braces having lower end portions fixed to the frame at the junction of the top and rear wall, said braces slanting upward over the top wall to the coil housing, means by which a releasably clamped relationship is provided between the coil housing and the upper ends of the braces, said means enabling the picture tube to be pushed against the stop when the clamped relationship is relieved and for said tube to be secured in pressure engagement with said stop when said clamped relationship is restored, bridging means xed to the braces intermediate their ends and rigidly securing the braces together, a draft member having anchor portions at either end thereof, one of the anchor portions being anchored to the bridging means and the other of the portions being anchored to the frame at a point remote from the rear wall, and adjustment means in connection with one of the anchor portions by which the tension in the draft member may be varied to resist tipping of the braces about their junction with the top and rear walls.

3. In television apparatus comprising a frame having a top wall from which front, rear and side walls extend downward and a stop at the front wall is extending upward for abutment by the front of a picture tube concurrently anchored in engagement with a pair of supports at either end of the front wall, the tube having a back portion converging to a cylindrical neck embraced by coil i housing in engagement with the back portion, the combination of, means by which the picture tube is biased toward the stop and concurrently supported rearwardly thereof comprising a pair of elongated metallic members of channel shaped cross section having web and tiange portions and lower ends xed to the frame atrthe junction of the top and rear wall, said braces slantingl upward over the top wall to the coil housing, a transverse beam fixed to both of the members and spacing them from each other, means by which a releasably clamped relationship is provided between the coil housing and the upper ends of the braces, said means enabling the picture tube to be pushed against the stop when the clamped relationship is relieved and for said tube to be secured in pressure engagement with said stop when said clamped relationship is restored comprising a draft member having anchor portions lat either end thereof, one of the anchorA portions beingv anchored to the transverse beam and the other of the portions being anchored to the frame at a point adjacent the front wall to resist tipping of the braces about their junction with the top and rear walls, and adjustment means in connection with one of the anchor portions by which the tension in the draft member may be varied to govern the angular relationship between the picture tube and the frame.

4. A support for supporting a television picture tube on top of a chassis wherein the front end of said tube is provided with means to limit its movement forward of the chassis, said support being arranged to engage the tube around the neck and adjacent the outwardly flared part to push said tube forwardly comprising a pair of spaced apart beams secured to the back top edge of the chassis and inclined forwardly and upwardly, a yoke support housing carried on the top ends of said beams and tieing said beams together, and draw bar means secured between the upper end of said beams and to a forward portionof said chassis and having adjustment means thereon for pulling the upper end of the support toward the flared part of the tube.

5. A support for supporting a television picture tube on top of a chassis wherein the front end of said tube is provided with means to limit its movement forward of the chassis and said support is arranged to engage the tube around the neck and adjacent the outwardly ared part to push said tube forwardly on the chassis comprising a pair of spaced apart beams, each of which is narrow at the base and wider at the top, secured to the back top edge of the chassis and inclined forwardly and upwardly to a point spaced below the tube neck, a yoke support housing carried on the top ends of said beams and tieing said beams together and having a yoke coil therein engaging the neck and ared base of the tube, draw bar means secured between the upper end of said beams and to a forward part of said chassis and having adjustment means thereon for pulling the upper end of the support toward the iiared part of the tube.

References Cited inthe le of this patent UNITED STATES PATENTS 1,866,028 Goolsbee July 5, 1932 2,354,661 Berejkoi Aug. 1, 1944 2,428,928 Cain v Oct. 14, 1947 2,484,345 Hinz Oct. 11, 1949 2,505,736 Herscher Apr. 25, 1950 2,567,303 Statkus Sept. 11, 1951 2,567,996 Gaffney Sept. 18, 1951 2,568,631 Hoellerich Sept. 18, 1951

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