US2156048A - Electric discharge device - Google Patents

Description

April 25, 1939. 0. BAIER El AL 2,156,048

ELECTRIC DISCHARGE DEVICE FiledMay 15, .1938

Patented Apr. 25, 1939 UNITED STATES PATENT OFFICE ELECTRIC DISCHARGE DEVICE Otto Baier and Annemarie Katsch, Berlin, Germany, assignors to C. Lorenz Aktiengesellschaft, Berlin-Tempelhof, Lorenzweg, Germany, a com- D y Application May 13, 1938, Serial No. 207,754 In Germany May 15, 1937 4 Claims. (Cl. 250-275) The present invention relates to electric disrangement shown in Fig. l. The difference becharge devices and more particularly to such detween these two designs is that the leading-in vices adapted for generation of very high freconductors 5 are fixed in holes at the outer edge quency oscillations. which merely project into the base portion 3.

5 As well known, the mechanical stability of The manufacturing of the tubes as above de- 5 electric discharge devices may be improved by scribed is effected in such manner that the leadmaking them entirely or partially of a ceramic ing-in conductors are at first sealed to the base material. Electron discharge tubes of this type portion by the agency of a material having a high are preferably employed for the generation of melting point such as hard glass or metal wherevery high frequency oscillations at which the inupon the various electrodes are attached to their 10 ductance value of the leading-in conductors is appertaining leading-in conductors. Finally, a of great importance and where normal sockets material having alower melting point is employed cannot be employed. for the seal 8 between the cylindrical membed l The present invention deals with such discharge and the base portion 3. l5 tubes which essentially consist of a ceramic ma- It is also within the scope of the invention to terial and in which the leading-in conductors are apply the above described shape of the leading-in formed as a bail and rigidly attached to the base conductors to tubes of other types. The essential portion of the discharge vessel at two points. The feature is that the leading-in conductors present advantage obtained on account of the structure the shape of a bail and are attached to the base of the electron discharge tube according to the portion of the tube at two points. 20

invention is that this tube may be directly at- What is claimed is: tached to a supporting means and that the lengths 1. An electric discharge device comprising a of the leading-in conductors to the various elecdischarge vessel composed of diiferent portions, trodes of the tube present minimum lengths. a plurality of electrodes arranged in said vessel,

The possibility for a displacement of the leadand leading-in conductors to the various elecing-in conductors which may occur when these 0C1 5. each of Said leading-in Con u or being leads are fixed only at one point is substantially bail-shaped and sealed to said vessel at two points.

avoided on accoiuit of the bail-shaped leading-in 2. An electric discharge device comprising an conductors and the method of fixing these leadenvelope, a base portion of ceramic material, a ing-in conductors at two points. plurality of electrodes arranged in said envelope, 30

The invention will be more readily understood d ai ap d leading-in Conductors 130 s from the following description taken in conjuncelectrodes, said base portion having two circular tion with the accompanying drawing, in which: rows of holes adapted to receive said leading-in Fig. l is a cross sectional View through one emconductors in radial relation to each other. bodiment according to the invention; Fig. 2 is a 3. An electric discharge device comprising a 35 bottom view of the arrangement shown in Fig. 1; discharge Vessel having 611% y c l a n while Fig. 3 illustrates a modification over the portion, a glass Cover sealed 0116 6nd d arrangement shown in Fig. 1. ceramic base portion sealed to the opposite end In the figures, i represents a cylinder of ceramic hereof, a plurality of electrodes arrang in sa d material carrying at its upper end a cover 2 of envelope, and bail-shaped leading-in conductors glass which is elongated in the shape of a pipe to said electrodes, said base portion having two to which the vacuum pump is connected and circular rows of holes adapted to receive said which is sealed after an evacuation has been efleadin COIIGHCtOTS in ad a r ation to each fected. The remote end of the cylinder 1 is other.

covered by a base portion 3. Two circular rows 4. An electric discharge device according to 45 of holes 4 are arranged in the base portion 3 and claim 1 and in which the different portions of extending throughout the entire thickness therewhich the discharge vessel is composed are held of. These holes are adapted to receive the bailtogether by means of a seal and the leading-in shaped leading-in conductors 5 which after havconductors are sealed directly to the wall of the ing been brought into position are sealed to the discharge vessel by means of a material having 50 base portion at two points 6 so that lateral benda higher melting point than the seal holding toing of these leads after the tube has been finished gether the different portions of the vessel. is not possible. Moreover, the tube may be direct- 1y placed in a fitting. OTTO BAIER.

Fig. 3 illustrates a modification over the ar- ANNEMARIE KATSCH.

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