US1978067A - High power short wave transmitting apparatus - Google Patents

Description

Oct. 23, 1934. c. vRANY ET AL 1,978,067

HIGH POWER SHORT WAVE TRANSMITTING APPARATUS Filed NOV. 3, 1931 5 Sheets-Sheet 1 Oct. 23, 1934. c. VRANY El AL 1,973,057

HIGH POWER SHORT WAVE TRANSMITTING APPARATUS I Filed Nov. 3, 1931 5 Sheets--Shee1:v 2

In Vezz Zazzs: ['ar/ l rany naw/mm 20mm Oct. 23, 1934.

C. VRANY ET AL HIGH POWER SHORT WAVE TRANSMITTING APPARATUS Filed Nov. 3, 1931 3 Sheets-Sheet 5 Pat nted a. 23, 1934 r 1,978,067

g UNITED [STATES PATENT OFFICE siaos'zs 1 HIGH POWER SHORT WAvE TRAN'sMITTInd v k t APPARATUS,

7 'Carl Vrany, Berlin-Lichterfelde-Ost, and Heine v rich Zodtner, Birkenwerder, near Berlin, Germany, assignors to C. Lorenz Aktiengesellschaft, Berlin-Tempelh of Germany Application November 3, 1931, Serial No. 572,796

In Germany November 5, 1930 5 claims. (01. 250-47) The present invention relates to high power Fig. 5 shows a modified form of the invention short wave; transmitting apparatus, and more in elevation. particularly to an improved form of construction Fig. 6 is an adaptation of the apparatus shown of the apparatus. Hitherto, transmitters have in Fig.1. i i beenbuilt up on metal frames in which the In Fig.1, the final stage of ahigh-power transelectron discharge valves and tuning members mitter employing eight tubes is illustrated diawere arranged; Such a construction, however, grammatically the grid circuits being omitted has the disadvantage that, owing to the many for the sake of clearness, only the anode circuits metal parts, the capacity to earthis very great being shown. The tubes, 1 to 8, are connected 0 and the connecting leads cannot be madeshort in such a manner that pairs of tub (1 an 2,

enough. The necessity for a small capacity to 3 and 4, 5 and 6, 7 and 8) are connected in parearthiand shortconnecting leads, becomes more allel. ,The connection is moreover effected important as the wave-length is decreased, but through the inductance coils 9 to 12 and the conit is desirable that thesedemands should also be n rs 13 and '14- T n li in ndensers met when using medium wave-lengths. 15, 16,17 and 18 have plates common with these An object of the invention is to provide a high condensers, The input i n rated'oscilpower short wave transmitting apparatus in latiOIlS is 6fi60ted"thT011ghthe inductance y which the elements are supported upon a single ind v up g With the coils 11 andlZ. The pillar of insulating material, anode voltage is applied at thepoint 20. t 2 A further object is to provide an insulating In constructional example illustrated in pillar for supporting the elements of a high power gu es 2, 3 and 4 0f the accompany g drawings, short wave transmitting apparatus in which is the various components are indicated by the same incorporated a channel for the supply oicooling reference numerals as theircorresponding symbols fluid to the electron discharge tubes employed in F u 011 a P l 21 (Figs- 2 a dfi) 0f inusaid transmitting apparatus. insulating material (preferably stoneware or 30 Another object is to provide a hollow pillar for p rcelain) th r rests a pi a t of urs this purpose through the interior of which curpossible to m the p r 21 and 22 in 0116 p rent. supply leads pass to the elements of the In the example illustrated, the walls of the pedshort wave transmitting apparatus. estal 21 have special passageways formed therein 30 Another object of the invention is to provide through which the anode cooling water flows. 5 t a plurality of pillars of insulating material each Since the city water mains or other sources of of which supports a plurality of electron discooling water are usually at ground potential the charge tubes and which support conjointly furcooling water pathmust be sufficiently long to ther elements which constitute with said elecisolatethe plate battery. These spiral passages 3 tron discharge tubes a short wave generating set. a formed in the in$1l1ating material 2 provide Still a h Object f the invention is, to a column of water to isolate the tube anodes from ,vide a pillar of insulating material carrying the gmnmt Q h s i P P s Ys the elements of a high power short wave transmitcoolmg Water arfformed 1n t round b 1:119 40 ting set which is provided with shoulders upon is gi gi 'g gf s igg g ggfgg g i fi '.ee oed .placannes 2: ;zi ti isg gg isggz 225 S mp1 y which are indicated diagrammatically. At the upper end, connections 24 and 25 to the anodes of Furthel oblects W111 be apparent from the the tubes are provided for this purpose. The tubes lowing description taken in conjunction with the themselves are mounted directly on the fixed 45 accompanying drawings in whlch: plates of the anode tuning condensers 13 and 14 1 illustrates diagrammatically a CHOU-1t so that additional connecting leads between the arrangement which may Convenienfly be anode cooling jacket and the fixed plates of the ploy d n t apparatus according to the iIWen" condensers are dispensed with. The condensers tion. themselves are directly fixed to the pillar 22. To 5 Fig. 2 shows an elevation of one form of the this end, the pillar 22, as can best be seen from apparatus. the plan view in Fig. 4, has arms 26 to which Fig. 3 shows another view partly in section of the condensers are fixed. The shafts of the rotors the apparatus shown in Fig. 2. are mounted in the insulating material at the Fig. 4 is a plan view of the apparatus shown points 27. A very compact construction is thus v1.5 in Figs. 2 and 3. obtained and no special connecting leads are used.

The movement of the rotors is effected by means of a worm wheel drive operated by a common shaft. Since the fixed plates of the condensers are arranged parallel to one another, the rotors do not interfere with one another. The clearance of the condensers can therefore be kept small and is determined only by the thickness of the arms 26. The neutralizing condensers are fixed to the arms in the same way, as can best be seen from Fig. 3. The plates'29 of the anode condensers, as mentioned above, are common with the fixed plates for the neutralizing condensers. The coupling coil 19 is likewise rotatably mounted in arms 31 (Fig. 4) of insulating material.

A roof-shaped metal screening sheet 32 (Fig. 3) which screens the anode circuits from the grid circuits is provided, mounted in the upper part of the pillar 22. In order that the electron tubes may be interchangeable, the outer edge of the metal sheet may be hinged. The head 33 of the pillar, also has arms in which the grid-circuit condensers and the grid-circuit tuning members are mounted, but this mounting is only diagrammatically illustrated in the drawings. It is preferable not to make the head 33 in one piece with the pillar, but to attach it thereto. As can be seen in Fig. 4, the interior of the pillar22 is made hollow, so that the current supply leads (anode potential) may be passed up inside.

A modifiaction of the invention, embodying im provements upon the arrangement described and particularly suitable for discharge tubes of very high power, for instance, 150 kw. will now be described. According to this feature of the invention, the clamps or the like by which the tubes are fixed to the porcelain pillar in the construction shown in Figs. 2 to 4, are replaced by arms with which the pillar is provided and on which the tubes and other heavy parts of the transmitter rest. It is then necessary only to protect the tubes from falling over. This arrangement has the advantage that the entire weight of the tubes is borne by the arms and that metal fixing members, which would otherwise be necessary, are dispensed with.

A constructional arrangementis shown by way of example in Figs. 5 and 6. The pillar S is provided on its lower portion with arms A on which the anode cylinders of the discharge tubes R stand. In order to prevent the tubes falling over, the clamps L are provided. As can be seen from Fig. 5, the upper portion of the pillar S thereby becomes very narrow, by which means it is also possible to economize in material. On the head of thepillar are arranged the grid-circuit members G which are screened off; furthermore, measuring instruments may be provided, as indicated diagrammatically in the figure.

In Fig. 6 is shown the side view of an arrangement where two pillars are arranged side by side. Such an arrangement is provided for instance, when two normally operating tubes and two reserve tubes are provided. In this case it is of advantage, according to a further feature of the invention, to support the transmitter parts, for in stance, as illustrated, the grid circuits G by both pillars at the same time.

" We claim:-

1. High power short wave transmitting apparatus comprising the combination of a short wave generating set including at least one electron discharge tube, and a pillar of insulating material supporting said set, said pillar incorporating a channel for the supply of cooling fluid to the electron discharge tube.

2. High power short wave transmitting apparatus comprising the combination of a pillar of insulating material, electron discharge tubes mounted on said pillar, said pillar incorporating a channel for the supply of cooling fluid to the anodes of said electron discharge tubes,

condenser plates mounted in parallel relation on said pillar, said tubes being directly secured by their anodes to said condenser plates.

3. High power short wave transmitting apparatus comprising the combination of a pillar of insulating material, having fluid cooled anodes, said pillar incorporating a channel for the supply of cooling fluid to said anodes, a plurality of projecting arms on said insulating pillar, and rotatable tunelectron discharge tubes 7 ing members journalled in said projecting arms.

4. High power short wave transmitting apparatus comprising the combination of a short wave generating set including electron discharge tubes having fiuid cooled anodes, a hollow pillar of insulating material supporting said set, the walls of said pillar incorporating a channel for the supply of cooling fluid to said anodes and current supply leads passing through the interior of said pillar.

5. High power short wave transmitting apparatus comprising the combination of a hollow pillar of insulating material, a plurality of condenser plates arranged in parallel relation on said pillar, electron discharge devices supported by their anodes on said condenser plates, the walls of said pillar incorporating a channel for the supply of cooling fluid to the anodes of said electron discharge tubes, and current supply leads passing through the interior of said pillar.

CARL VRANY. HEINRICH ZODTN ER.

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