Abstract: A plastic television chassis adapted for use in combination with a cathode-ray tube within an enclosure includes a base having integral snap-together parts disposed at opposite ends thereof. A pair of side frames are attached, respectively, to the opposite ends of the base in a substantially orthogonal orientation. Each side frame has integral snap-together parts disposed adjacent a first edge thereof for mating with the snap-together parts of the base, and also has integral slidable-groove parts disposed along a second edge thereof adjacent the first edge. A panel is attached to the side frames by integral slidable-groove parts disposed along opposite sides thereof for mating, respectively, with the slidable-groove parts of the side frames.

Abstract: A system for sealing a mount in a cathode-ray tube using first and second tiers of burners includes a first valve in an oxygen supply line and a third valve in a fuel supply line connected to the first tier, and a second valve in the oxygen supply line and a fourth valve in the fuel supply line connected to the second tier for controlling, respectively, the flow of oxygen and fuel therethrough. The system comprises a preignition timing relay responsive to a start signal and coupled to both the first and the third valves for effecting a preignition gas flow period. An ignition timer is responsive to the preignition timing relay and is coupled to both the first and the third valves and to an igniter for effecting an ignition latchup interval at the end of the preignition gas flow period. A first timing relay is responsive to the ignition timer and is coupled to both the first and the third valves for effecting a first-tier gas flow period following the preignition gas flow period.

Abstract: A method of sealing an electron gun mount of a cathode-ray tube to a back section thereof comprises the steps of applying a glass frit between an edge of the back section and the mount where the sealing is to be effected, heating the glass frit to a temperature sufficient to cause the frit to become vitreous, thereby sealing the mount to the back section, and flowing a gas containing a reducing agent past the electron gun during the heating step.

Abstract: A cathode-ray tube has a rectangular faceplate panel sealed to a funnel thereof along an edge of a sidewall of the panel, and has an internal magnetic shield disposed therein proximate an inner surface of the sidewall and extending backward along an inner surface of the funnel. The magnetic shield has at least one opening disposed in at least one corner thereof for allowing dispersal of getter material therethrough and onto the inner surfaces of the sidewall and the funnel adjacent the edge.

Abstract: A method for sealing a mount including a wafer in a neck of a stationary cathode-ray tube comprises positioning a first tier of burner tips completely around the neck such that the burner tips are aimed nonradially along directions tangent to a first circle, the plane of the first circle being aligned along the wafer. The first tier of burner tips is split into at least first and second radial segments, each segment being connected to means for moving the segment toward and away from the neck. The first tier of burner tips, while remaining stationary, provide a vortical pattern of flames around the neck. The radial segments are then removed from around the stationary neck sufficiently to allow the tube to proceed along a conveyor line.

Abstract: A punch and pad for forming a square planar shadow mask have curved outer edges. A pair of dies respectively receiving the punch and pad have straight inner edges. The dies clamp a flat shadow mask blank and the punch is lowered to only partially form the shadow mask. The mask is then unclamped and the punch is fully lowered towards the pad to complete the forming of the mask without wrinkles.

Abstract: A CRT has a spring for mounting the shadow mask assembly of the CRT onto a stud of the CRT panel. The spring has a circular flange contered on a stud receiving hole. Thus the stud hole is always straight up and at a fixed distance from a locator of an insertion machine regardless of any tilt of the spring, and therefore the shadow mask assembly is always correctly inserted into the panel.

Abstract: A CRT has an Einzel lens focus mask with a high voltage between the shadow mask and the meshes to achieve a strong focusing action and therefore minimize beam current interception by the shadow mask. The mask is supported by an insulating block inside a tube. During gettering, the getter material does not deposit on the inside of the tube and therefore spurious conduction paths are avoided. Thus the support can withstand the high voltage. A lead-in wire for the mask has a tube surrounding it which is open near the mask. This also withstands the high voltage.

Abstract: A technique for interconnecting a plurality of stacked printed circuit boards, each board having a plurality of spaced contact areas at an edge thereof, utilizes a multiconductor cable having a plurality of insulation-stripped window regions therein at predetermined intervals. The cable is continuous through a plurality of the window regions which are positioned, respectively, adjacent the edges of the printed circuit boards so that, at each window region, each stripped wire is aligned with a different contact area. The stripped wires are soldered in bulk to their respective contact areas.

Abstract: A system for inputting any one of a plurality of inputs to a computer includes a latch circuit which provides an input to the computer in response to the input. The latch circuit also provides a start signal to the computer when the parity is correct. The start signal is delayed so that the system is independent of the amount of time that a switch is held closed by the operator.

Abstract: An interface circuit in a television receiver selects two pulses from a pulse train for transfer to a digital computer. The interface circuit includes first and second logic elements, a counter and a comparator for enabling a gating circuit to transfer the selected two pulses to the digital computer.

Abstract: Apparatus for sealing a mount including a wafer into a neck of a cathode-ray tube oriented along an axis comprises two tiers of burner tips. The first tier is disposed completely around the axis at a first distance therefrom and similarly aimed nonradially along directions tangent to a first circle. The second tier of burner tips is disposed completely around the axis below the first tier at a second distance from the axis and similarly aimed nonradially along directions tangent to a second circle. The first distance and the diameter of the first circle are greater, respectively, than the second distance and the diameter of the second circle.

Abstract: An apparatus for sealing a wafer in the neck of a CRT has two groups of burners, one group provides the optimum temperature for sealing, the other group provides the optimum temperature for cutting off the cullet. The burners are arranged in an arc with the outer burners performing the cutting off operation and the inner burners performing the sealing operation.

Abstract: A method of testing a panel assembly of a color cathode-ray tube, prior to sealing a faceplate panel of the assembly to a funnel section of the tube, detects defects in the assembly including dents and misregistration of an apertured shadow mask mounted therein adjacent to a luminescent screen disposed on the faceplate panel. The screen is exposed to radiation passed through apertures in the mask including ultraviolet but substantially excluding visible radiation, and examined for variations in color from light emitted by the screen, whereby the variations in color are indicative of defects in the assembly.

Abstract: A getter flasher has a movable, self-centering coil enclosure including an rf induction coil adapted to heat a getter container disposed within a cathode-ray tube and adjacent to a funnellike surface thereof. The coil enclosure is supported by a holder and has a spring coupled thereto for moving the coil enclosure in a direction away from the holder. A surface of the coil enclosure has a contour substantially similar to a portion of the funnellike surface of the tube.

Abstract: A device for measuring the offset between the funnel and panel of a kinescope includes a pivotable member which engages the reference pads on the funnel. The pivotable member is mounted on a slidable mount which is biased to an extended position. When the reference pads are engaged, the mount slides whereby all kinescope sizes can be measured. The pivotable member supports a gage which measures the offset and provides a reject signal when the offset exceeds a predetermined amount.

Abstract: A sealing fixture for aligning the sealing edges of a funnel and a panel of a kinescope during fritting is tilted so that a funnel placed in the fixture is gravity moved toward a corner of the fixture. All contact between the funnel and the fixture is made through rotatable referencing elements so that gravity accurately positions the funnel in the fixture.

Abstract: A hybrid uses stubs to provide 90 degrees of phase shift between output lines for feeding a circularly polarized antenna. Capacitive and inductive stubs have low and high characteristic impedances for broad bandwidth. The stubs can be located in the output lines for compactness, or in a T-section between an input line and the output lines, for compactness, to minimize undesired phase shift, and for ease of connection. The hybrid can include one quarter wave transformers having a characteristic impedance of geometric mean of the hybrid and antenna for improved axial ratio.

Abstract: A device for maintaining a moveable faceplate panel a constant distance from a stationary point includes a fixed caddy. The caddy has longitudinally parallel fixed rails which curve in the same direction as one curvature of the panel. A moveable caddy rides on the fixed rails and includes additional rails which curve in the same direction as the other curvature of the panel. A panel carrier rides on the additional rails whereby the surface of the panel remains the constant distance from the stationary point and as movement occurs along either or both sets of rails.

Abstract: The method for sealing a glass stem wafer into the neck of a CRT has a plurality of burner tips disposed completely around the neck. The burner tips are angled such as to create rotating hot gases around the neck. This eliminates the need to rotate the CRT bulb, the wafer or the burner tips, to achieve a uniform seal.