Патент USA US2114620код для вставки
April 19, 1938. ' B. WIENECKE MULTISYSTEM TUBE - Filed Feb. 5, 1934 2,1 14,620 Patented Apr. 19, 1938 ' UNITED STATES PATET FFi€E 2,114,620 MULTISYS'I‘EM TUBE Bruno Wienecke, Berlin, Germany vApplication February 5, 1934, Serial No. 709,705 ‘ In Germany February 6, 1933 4 Claims. (Cl. 250-275) The subject matter of the present invention is tact between the anodes and the strips of mica, a novel arrangement of the electrode systems in which might lead to disturbances, particularly multi~system tubes for mounting the systems to when the system is loaded, by heating the anodes, ‘ be free of vibration, and a method of obtaining 5 a rigid assembly of the systems. The arrange- small spacers are provided, for example of ceramic ’ material, which upon the assembly of the total ‘5 ment and the method are for use both in con- system structure are slipped over the cross bars nection with recti?er tubes, and more particularly secured to the anodes. . ' two-way recti?er tubes, as well as for power ampli?er tubes and transmission tubes, insofar 10 as these possess a plurality of systems. It has been found that without the arrange~ ment of the systems according to the invention a displacement of the systems or the single parts thereof frequently takes place by the vibration The assembly of the total system on the pine in accordance with the invention is now per formed in such fashion that the total system rests 10 upon the pinch merely by means of the mica braces in two-point or two-surface contact, possibly with rectangular or trapezoidal cross section. The diagonal braces are provided at a 15 of these tubes of relatively high output. Owing to‘ this relative displacement of the systems or system parts the tube data is naturally a different one, and the tubes are thus made in- suitable point, preferably at the centre, with a '15 small metal plate, which may conveniently be secured to said braces by riveting. Said metal plates are secured, preferably by spot welding, to capable of use. short holding rods, which are fused into the pinch A, , 20 . It has also been found that in the production of tubes of relatively high output as hitherto known the most frequent error in manufacture consists in rupture or fracture of the pinch. This and secure in this way the entire system in its ‘20 position on said pinch. The ?laments which may preferably be V shaped are held by means of resilient leads con is due to the fact that the electrodes, and more 25 particularly the anodes, are secured in direct fashion to the leading or holding rods fused into the glass pinch. In the heating of the me- nected to each. of the ends of the ?lament. The V centre-point of the ?lament is held ?rmly on a ‘25 cross strut between the diagonal braces. To sup tallic parts necessary for outsassins purposes there occurs, however, a strong conduction of 30 heat over these short holding rods to the glass port the current leads for the cathode there is provided in. accordance with the invention, a transverse bracing, preferably composed of mica, between the diagonal braces on either side, which 30 pinch, so that inadmissible thermal stresses are transverse bracing ensures a sufficient spacing produced, which may lead to rupture of the pinch. between the current leads. It may also occur on occasion that, owing to overloading during operations, more particularly 35 the anodes become excessively heated, and that also in this Case the glass Din-0h may become fractured owing to conduction of the heat. ACCOrding HOW to the invention, the electrode systems are ?rst united to form a ?rm self-com 40 tained mechanical structure. This is performed in such fashion that the single electrode systems are so supported in relation to each other by means 0f diagonal braces that the systems have no possibility whatsoever of moving in relation 4 tO each other. The diagonal braces are produced from a highly insulating material, which may be readily outgassed, for example mica, and are connected together at the point of intersection. The diagonal braces, hOWEVer, may also be D‘1'0~ 50 duced in one piece, which conveniently is in the form of an X. To these there are secured in By reason of the arrangement according to the invention it is accomplished that insofar as the electrodes of a certain system possess a certain‘ freedom of movement at all in relation to each other, these electrodes, for example the cathodes of the sys tern, are unable to move the direction from anode to cathode, but only in a direction verti cal thereto. This is particularly important in the All) case of recti?er systems, in which the spacing between cathode and anode is extremely small. The assembly of the systems according to the invention is illmtrated in the drawing in con junction with a possible form of embodiment of a 45 two-way recti?er. Fig. 1 is complete View of the system accord mg to the invention, while in Fig, 2 there is shown an elevation and in Fig. 3 a plan of the systeln with the same reference characters as 50 in Fig. 1. Y accordance with the invention cross bars for In Fig. 1, l is the glass pinch having the pump holding the electrodes, for example the anodes, tube 2 attached thereto, 3 and ii the box-shaped which bars are mounted ?rmly in corresponding . anodes, and s and s the cathodes guided in the 55 borings in the diagonal braces. To avoid conform of a V. In the pinch there are fused the 5 2 2,114,620 holding rods 1 and 8, which at the same time are constructed to form leads for the anodes. Over these holding rods there is slipped and se and the pinch, and a heat insulation is provided between the anodes and the pieces of mica, (6) The cathodes, which are preferably guided cured the structure carrying the systems. The anode systems are connected with each other by in the form of a V, are secured on the one side means of the cross-members 9 and ID. diagonal braces, and at the two other ends are This connection causes on the one hand the combi nation of the electrode systems to form a me chanical unit, and on the other hand, insofar 10 as relative displacement of the electrodes is still possible at all, provides security against the danger of short-circuiting and other electrical disadvantages. 9 and I!) are the diagonal braces according to the invention, which’ consist of a 15 highly insulating material readily capable of be ing outgassed, for example of mica, and are in the form of an X. They are bored at the ends, and carry the anodes by means of transverse bars 22 and 23 secured thereto, spacers 28, composed 20 for example of ceramic material, being provided to avoid contact between the anodes and the pieces of mica. There are also fused into the pinch a middle holding rod II and the leads l3 and M for the cathodes 5 and 6. The spac ing between these electrodes is ensured by means of a cross strut IS. The fixed holding of the ?laments at the bottom is performed by means of the transverse rod 2! with the abutment 26, whilst the upper lead is constructed to be elastic 30 by means of the resilient yokes 24 or 25 for each ?lament. The pieces of mica 9 and I0 carry at the centre a circular metallic disc l6, which is riveted ?rmly to the mica itself. By means of the bent abutments I‘! and I8 furnished with 35 apertures the rigid system structure is slipped over the holding rods 1 and 8 until it rests ?rmly at two points or surfaces against the pinch at I2, and is then welded to the rods 1 or 8 with the assistance of the plate l9. At the same time there are also welded to this plate l9 asuitable to a transverse strut, which is mounted on the secured resiliently in respect of each ?lament section to avoid any irregular or insufficient ten sion of these ?lament sections. I claim: 10 1. In an electron discharge device a stem hav ing a press portion, two cathodes, two box-shaped anodes, two diagonal braces consisting of a high ly insulating and highly vacuum-proof material, the ends of said braces connected with each other 15 by four transverse rods and with said anodes forming a mechanical unit without heat-conduc tive connections, said unit being rested upon said press portion in two-point contact by means of said diagonal braces, the centre of gravity of 20 said unit situated below the upper surface of said press portion. 2. In an electron discharge device a stem hav ing a press portion, two cathodes, two box shaped anodes, two diagonal braces consisting of a highly insulating and highly vacuum-proof ma terial, the ends of said braces connected with each other by four transverse rods and with said anodes forming a mechanical unit without heat conductive connections, said unit being rested so upon said press portion in two-point Contact by means of said diagonal braces, the centre of grav ity of said unit situated below the upper surface of said press portion, said diagonal braces se cured ‘against displacement by additional holding 35 means comprising holding rods fused in the press portion and connectedwith metallic discs ?xed in the centre of said diagonal braces. _ 3. In an electron discharge device a stemhav ing a press portion, two cathodes, two box getter material 20, for example, magnesium, and 1 shaped anodes, two diagonal braces consisting of the anode lead 21. It is also possible, in addition to the electrode systems assembled in accordance with the in vention, to ?t coupling elements in the same vac uum space, or to provide any additional electrode systems, which are not assembled in the man ner according to the invention. The particular and essential features of the 50 present invention are to be regarded in the fact that (1) The bracing of the systems or system a highly insulating and highly vacuum-proof material, the ends of said braces connected with each other by four transverse rods and with said anodes forming a mechanical unit without heat— conductive connections, said unit being rested upon said press portion in two-point contact by means of said diagonal braces, the centre of grav~ ity of said unit situated below the upper surface of said press portion, a heat insulation compris ing spaces of ceramic material provided between said anodes and said diagonal braces. parts in relation to each other is performed by means of diagonal braces, (2) The centre of gravity of the total system 55 structure is disposed as low as possible, preferably below the supporting points for the system on the ' , 4. In an electron discharge device a stem hav pinch, (3)‘ The diagonal braces may each be produced 60 from a strong and preferably X-shaped piece of material, (4) The total system is mounted by (two~ point or two-surface) bearing of the diagonal braces against the pinch, and additional holding 65 is performed by securing the total system to holding rods, preferably by means of spot weld mg, (5) The arrangement is such that .no heat conductive connection exists between the anodes ing a press portion, two cathodes, two box-shaped anodes, two diagonal braces consisting of a high ly insulating and highly vacuum-proof material, the ends of said braces connected with each other by four transverse rods and with said anodes forming a mechanical unit-without heat conductive connections, said unit being rested upon said press portion in two-point contact by means of said diagonal braces, the centre of gravity of said unit situated below the upper surface of said press—portion, the lower end of said cathodes secured ?rmly on a transverse strut mounted on said diagonal braces, the upper ends of said cathodes being held in resilient fashion, cathode leads supported by a transverse brac ing mounted in said diagonal braces. BRUNO WIENECKE.