CH288008A

CH288008A - Electron tube.

Info

Publication number: CH288008A
Authority: CH
Inventors: Telephone Et Radio S Standard
Original assignee: Standard Telephone & Radio Sa
Priority date: 1941-10-24
Filing date: 1947-09-25
Publication date: 1952-12-31

Description

Tube electronique. La presente invention est relative ä un tube electronique suseeptible d'utilisation pour des tres hauten frequences et comportant une anode, une grille de commande, une cathode et un disque metallique scelle ä 1'enveloppe et formant un ecran divisant 1'interieur de 1'enveloppe en deux Parties. Ce tube est carac- t6ris6 en ce que detlx au moins des electrodes et leurs pieces de support sont jointes entre elles de fagon ä constituer un ensemble rigide, cet ensemble etant monte Jans Tune desdites Parties de 1'enveloppe de fa@on que ladite grille est electriquement reliee audit ecran, tandis que 1'anode se trouve d'Lln cöt6 de 1'6cran et la cathode de 1'autre cöte de 1'eeran. Electronic Tube. The present invention relates to an electron tube suitable for use at very high frequencies and comprising an anode, a control grid, a cathode and a metal disc sealed to the envelope and forming a screen dividing the interior of the envelope in two parts. This tube is characterized in that two at least of the electrodes and their supporting parts are joined together so as to constitute a rigid assembly, this assembly being mounted on one of the said parts of the casing so that the said grid is electrically connected to said screen, while the anode is on the side of the screen and the cathode on the other side of the screen.

Quelques formen d'execution de 1'objet de 1'invention sont representees, ä titre d'exem- ple, dann 1e dessin annexe, dann lequel: La fig. 1 est une vLie en coupe d'Line pre- miere forme d'execLition, la fig. JA une vue partielle representant ttne variante de la connexion entre 1e pied d'anode et 1'anode proprement dite, la fig. 2 une vue montrant de fagon d6ta- chee les differents elements du tube de la fig. 1, la fig. 3 une vue montrant egalement de fagon detachee 1'anode, la grille et la cathode, la fig. 3A une vue en perspective de 1'anode ,representee ä la fig. 1A, la fig. 4 une vue en couple dune autre forme d'execution du tube; la fig. 5 est une vue montrant, de fagon d6tachee, les elements du tobe de la fig. 4; la fig. 6 est une vue montrant, egalement de fa@on detachee, la grille et la cathode du tube de la fig. 4; la fig. 7 est une coupe dune atitre forme de tube; la fig. 8 est une vue, de faQon detachee, representant les differents elements du tube de la fig. 7, et la fig. 9 est tane vue montrant, egalement de fagon detachee, la cathode, la grille et 1e guide d'anode du dispositif de la fig. 7. Some embodiments of the object of the invention are shown, by way of example, in the appended drawing, in which: FIG. 1 is a cross-sectional view of the first form of execution, FIG. JA a partial view representing a variant of the connection between the anode foot and the anode proper, FIG. 2 a view showing in a detached fashion the various elements of the tube of FIG. 1, fig. 3 a view also showing the anode, the grid and the cathode in a detached fashion, FIG. 3A is a perspective view of the anode shown in FIG. 1A, FIG. 4 a couple view of another form of execution of the tube; fig. 5 is a view showing, in a detached fashion, the elements of the tobe of FIG. 4; fig. 6 is a view showing, also in a detached way, the grid and the cathode of the tube of FIG. 4; fig. 7 is a cross section of a tube shape; fig. 8 is a view, in a detached way, representing the various elements of the tube of FIG. 7, and fig. 9 is a view showing, also in a detached way, the cathode, the grid and the first anode guide of the device of FIG. 7.

Sur les differentes figures, 1 et 2 desi- gnent les Parties entree et sortie du tube, lequel comprend une enveloppe de verre cylin- drique et un disque de 1'ecran metallique 3, de cuivre scella entre lesdites Parties et se prolongeant bien au-delä de 1'enveloppe. Ledit disque forme un blindage entre les deux Par ties 1 et 2 du tube et constitue en outre un Organe de montage permettant de connecter 1e tube directement dann 1e circuit de grille. Le centre du disque presente une ouverture 4 pour recevoir la grille 5. Dann les construc- tions representees aux fig. 7. ä 6, la grille 5 est montee, en meme temps que la cathode 6 et 1'anode 7, nur 1e pied 8 dann la Partie 1: du tube, tandis que dann la variante repre- sentee aux fig. 7 ä 9, la grille et la cathode sont montees nur 1'anode 20, comme il Sera deerit plus loin. La grille est enrou1ee autour de deux tiges de support indiquées en 9, por tées par les organes de support 10 en forme de plaques terminales de mica munies de res sorts de contact 11 pour assurer le contact. avec l'écran. In the various figures, 1 and 2 designate the inlet and outlet parts of the tube, which comprises a cylindrical glass envelope and a metal screen disc 3, of copper sealed between said parts and extending well beyond. beyond the envelope. Said disc forms a shield between the two parts 1 and 2 of the tube and further constitutes a mounting member allowing the first tube to be connected directly to the first grid circuit. The center of the disk has an opening 4 to receive the grid 5. In the constructions represented in FIGS. 7. to 6, the grid 5 is mounted, at the same time as the cathode 6 and the anode 7, on the foot 8 in Part 1: of the tube, while in the variant shown in FIGS. 7 to 9, the grid and the cathode are mounted on the anode 20, as will be described below. The grid is enrou1ee around two support rods indicated at 9, carried by the support members 10 in the form of end plates of mica provided with contact springs 11 to ensure contact. with the screen.

Dans l'exemple représenté aux fig. 1 à 3, l'anode, plate 7 est montée sur les tiges de sup port 12 portées par les plaques terminales de mica 10, et une pièce métallique tubulaire 7.3 prolonge ladite anode sur laquelle elle est fixée. Une fente rend ladite pièce tubulaire élastique et celle-ci s'adapte dans le logement formé par la partie en retrait 15 an pied d'anode 16, lequel est scellé à la base de l'en-- _ veloppe dans la partie 2 du tube. Les fig. 1A et 3A représentent une variante dans laquelle L'anode plate 7 est munie d'un prolongement plein en forme de tronc de cône 13a qui s'adapte dans le logement 14 formé par la partie en retrait 15 du pied d'anode 16. Dans la construction représentée, l'anode plate con= siste en un bloc de cuivre plein avec des tenons de support 12a d'une seule pièce avec ledit bloc et. situés à ses extrémités, s'adap tant dans les fentes ménagées dans les pla ques terminales de mica 10. In the example represented in FIGS. 1 to 3, the flat anode 7 is mounted on the support rods 12 carried by the end plates of mica 10, and a tubular metal part 7.3 extends said anode on which it is fixed. A slit makes said tubular piece elastic and the latter fits into the housing formed by the recessed part 15 of the anode foot 16, which is sealed at the base of the casing in part 2 of the tube. Figs. 1A and 3A show a variant in which the flat anode 7 is provided with a solid extension in the form of a truncated cone 13a which fits into the housing 14 formed by the recessed part 15 of the anode foot 16. In the construction shown, the flat anode consists of a solid copper block with support tenons 12a integral with said block and. located at its ends, fit into the slots made in the end plates of mica 10.

Dans l'exemple représenté aux fig. 4 à 6, la construction est sensiblement. identique, mais, dans ce cas, l'anode plate 7 est munie d'une paire de petites plaques élastiques 17 qui peuvent être de molybdène et viennent s.'appuyer de part et d'autre sur le pied d'anode 16. On constatera que dans ces différentes constructions, l'anode 7 est maintenue à la distance correcte de la grille au moyen des plaques terminales de mica 10. Le pied d'anode 16 est scellé au préalable dans le tube de la manière habituelle et l'on verra que la dispo sition est indépendante des légères variations d'espacement entre le pied d'anode et le disque de cuivre. Bien que le dispositif représenté aux fig. 4 et 6 ait un fonctionnement satisfai sant, les constructions des fig. 1 à 3A sont à préférer en raison du fait que, lorsqu'on exé cute la raréfaction, l'anode se dilate par suite de l'élévation de température, dans le loge- ment 14 de son pied, tandis que les petits ressorts plats 7.7 se dilatent en tendant à s'écarter du pied,d'anode. In the example represented in FIGS. 4 to 6, the construction is noticeably. identical, but, in this case, the flat anode 7 is provided with a pair of small elastic plates 17 which may be of molybdenum and rest on either side of the anode foot 16. It will be seen that in these different constructions the anode 7 is held at the correct distance from the grid by means of the mica end plates 10. The anode foot 16 is pre-sealed in the tube in the usual way and one will see that the arrangement is independent of the slight variations in spacing between the anode foot and the copper disk. Although the device represented in FIGS. 4 and 6 has a satisfactory operation, the constructions of FIGS. 1 to 3A are to be preferred because, when the rarefaction is carried out, the anode expands as a result of the rise in temperature, in the housing 14 of its foot, while the small flat springs 7.7 expand while tending to move away from the anode foot.

Dans la construction du tube des fig. 7 à 9, l'ensemble comprend la grille et cathode ainsi que leurs pièces de support 9 et 10, et est monté sur l'anode, laquelle est à cet. effet formée spécialement d'une partie terminale ; rectangulaire 20 comportant des épaulements 21 qui coopèrent avec un guide d'anode formé par les bandes métalliques 22 fixées dans les fentes 23 des pièces terminales de mica 10. Ainsi, l'ensemble grille-cathode est fixé en po sition précise sur l'anode, et l'espacement cor rect entre l'anode, la grille et la cathode est assuré. In the construction of the tube of Figs. 7 to 9, the assembly comprises the grid and cathode as well as their supporting parts 9 and 10, and is mounted on the anode, which is at this. specially formed effect of a terminal part; rectangular 20 comprising shoulders 21 which cooperate with an anode guide formed by the metal strips 22 fixed in the slots 23 of the end pieces of mica 10. Thus, the grid-cathode assembly is fixed in precise position on the anode , and the correct spacing between the anode, the grid and the cathode is ensured.

Dans ce cas, l'ensemble porte un petit dis que de cuivre 24 qui, lors de l'assemblage, s'engage avec l'écran 3 scellé au préalable dans l'enveloppe. Les fils de connexions de l'élément chauffant et de la cathode indiquées en 25 sont placées dans l'autre partie, comme indiqué en 26. In this case, the assembly carries a small copper disc 24 which, during assembly, engages with the screen 3 previously sealed in the casing. The heater and cathode lead wires shown at 25 are placed in the other part, as shown at 26.

Claims

CLAIM: Electron tube comprising an anode, a control grid, a cathode and a metal disc sealed to the casing and forming a screen dividing the interior of the casing into two parts, characterized in that at least two of said electrodes and their support parts are joined together so as to form a rigid assembly, this seems to be mounted in one of said parts of the casing, so that said grid is. electrically connected to said screen, while the anode is on one side of the screen and the cathode on the other side of the screen. 1. Tube according to claim, characterized in that all said electrodes (5, 6, 7, fig. 1, 2, 3, 5 and 6) and their support members (9, 10, 12) constitute a rigid assembly fixed to the tube in one of said parts (fig.1 and 4) of the tube, the cathode being in this same part of the tube and the said assembly extending through an opening (4) provided in the said screen ( 3) so that the anode (7) is located in the other part (2) of the tube, and in that the anode engages an anode foot (16) provided in this other part (2) of the tube .

2. Tube according to -the claim, characterized in that the grid (5, Fig. 9) and the cathode (6, Fig. 9) and their support members (9, 10, Fig. 8 and 9) constitute a set rigid having an anode guide (22, figs. 7 to 9) engaging a shoulder (21, fig. 8) of the anode (20, figs. 7 and 8) in order to ensure the correct distance between the grid and the anode, and in that said rigid assembly is mounted on the anode on one side (partial, fig. 7) of the screen and extends through an opening (4) provided in the screen, the grid being housed in this opening and the cathode as well as its connecting wires being on the other side of said screen. 3. Tube according to sub-claim 2, characterized in that the part of the screen provided with an opening is formed by a detachable metal disc (24). 4. Tube according to sub-claim 1, charac terized in that the anode (fig. 1 to 6) comprises a flat member (7) having at least one metal part (7.3, 13a, (fig. 1 to 3A; 17. Fig. 4 to 6) connecting the anode with said anode foot (16) 5. Tube according to sub-claim 4, characterized in that said part (13, Fig. 1 to 3) is 6. Tube according to sub-claim 4, charac terized in that said part (13a, fig.3A) is of conical shape and fits in a recess (14, fig. 1) of the anode foot 7. Tube according to sub-claim 1, characterized in that said anode foot (16, fig.1) has a housing (14, fig.1) formed by a removal (15, fig. 1) of the anode foot 8. Tube according to sub-claim 4, characterized in that the flat member (7) of the anode (fig. 4 to 6) has two parts 9. Tube according to sub-claim 2, characterized in that the anode guide (22, fig. 7 to 9) comprises a pair of parallel metal blades (22) fixed in the support parts (10, fig. 8 and 9) of said assembly. 10. Tube according to sub-claim 2, characterized in that the metal disc (24, Fig. 7 and 8) is connected to the grid (5). 11. Tube according to claim, as shown in FIGS. 1, 2 and 3 of the accompanying drawing. 12. Tube according to claim, as shown in FIGS. 4, 5 and 6 of the accompanying drawing. 1.

3. Tube according to claim, as shown in Figs. 7, 8 and 9 of the accompanying drawing.