International Standard Electric Corporation

Nokia Graetz

Eberhard Nill

Otto Brunn

Peter Schmidt

A shadow-mask color picture tube has a glass panel and glass funnel joined together via outwardly extending flange portions thereof. To mount a shadow mask in the picutre tube, holding plates are fastened between the flanges, preferably in internal recesses of the flanges, and each of the holding plates has a hole for a rivet which holds the mask and, in a preferred embodiment, an internal shield. The mask is preferably connected with the holding plates via bimetal elements.

Shadow mask mounting apparatus in a color picture tube

For the purpose of the exact position adjustment and mounting of the cathodes (3) in their supporting plates (4) outside the system of a TV-Picture tube electron gun, the fitting position of the supporting plate and the fitting positions of the cathodes in this supporting plate are transferred to the outside of the system with the aid of a measuring head comprising independently guided spacing jigs (8, 10) for transferring the fitting position instead of having to use a limit stop lying outside the system.

Method of adjusting the electrode spacings in systems of electron-beam

In a shadow-mask color-picture tube, adjustability of the deflection yoke on the tube is required. A ring is mounted around the front portion of the deflection yoke. The ring being supported by the yoke is free to move axially and can be swivelled. The ring is also lockable into a fixed position.

Mounting assembly for a deflection yoke

The invention relates to a method of aluminizing the inside of the panel of a television picture tube. When aluminizing the inside of the panel, blisters caused by the vaporizing lacquer, are likely to develop in the layer of aluminum, especially on the side walls of the panel portion. When taking care in accordance with the invention, that the coat of lacquer is roughened prior to the performance of the aluminizing process, these blisters are avoided.

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Esslingen, Germany

Eberhard Nill