Патент USA US2409856код для вставки
Oct. 22, 1946. c. H1LL.YER, JR., ,ET AL 2,409,855 GASEOUS DISCHARGE TUBE Original Filed Sept. 7, 1940 z\, 2z54 7/7//á/ ZN ä „ î 57Na Z<"Nm"7/ /.1Iï,.l lÉâl2ê@Tîam@Nña@„äêW,wMY„,VL INVENTORS ' _ ßlac/É's?ane "Hyer, ONM 2,400,855 Patented Oct. 22, 1946 UNITED ‘STATES PATENT OFFICE 2,409,855 GAsEoUs DISCHARGE TUBE Curtis Hiuyer, Jr., and Henry Blackstone, nach; mond Hill, N. Y. Original application September 7, 1940, Serial No.` Divided and this application March 6, 1941, Serial No. 381,951 355,708. 12 Claims. (Cl. Z50-27.5) l This invention relates to an electron discharge device and more particularlyto a gaseous dis charge tetrode of the “thyratron” type. This application is a division ot our applica tion Serial No. 355,708, ñled September 7, 1940, entitled “Projectile” Different types of apparatus depend for con 2 headers are welded in place within cylinder I, support 4 is securely held in proper position. If desired, the support may be welded to cylinder I. The inside of support section` 5 is provided with a shoulder 8, on which is seated a perfo rated disc-like shield grid 9. Grid SI is `held in place on shoulder B by an annular ceramic bush ing I0, the upper portion of which has a rabbet II. Another ceramic bushing I2 is also provided electron discharge devices of the character here with a rabbet I3, which, with rabbet II, forms 10 under consideration. For purposes of brevity, an annular slot in which a perforated disc-like devices of this >character are hereinafter referred control grid I4 is seated, and accordingly in to as tubes. These tubes are inherently delicate sulated from screen grid 9 and support section 5. or frangible, and accordingly unable to with A second perforated disc-shaped screen grid I5 stand substantial shocks or continued excessive rests on top of ceramic bushing I2, and includes 15 Vibration. As often as not their heater iilaments, an upwardly extending flange I5a which fits control and screen grids are formed of fine within support section 5, and may be electrically coil form, which readily be ` wire, quite often in and mechanically connected thereto as by weld comes displaced if the tube is roughly handled, ing, if desired. It may be seen that grids 9, I4 while other parts of the tubes tend to bend, and I5 are spaced from one another by ceramic crumble or break. It is accordingly among the 20 bushings I0 and I2, grid I4 being insulated from objects of this invention to provide aV tube of grids 9 and I5 and from support 4 by bushings the above character which is able to function I0 and I2. efliciently and over an extended period of time Still another ceramic bushing I6 is disposed under conditions of substantial shock or exces within support section 5, and includes a down sive continued vibration. Other objects will be 25 wardly extending reduced portion Ilia, which fits in part apparent and in part pointed out here within flange I5a of grid I5. Bushing I6 also inafter. has an interior annular rabbet IGI), which pro The invention accordingly consists in the fea vides a shoulder on which an anode plate I1 is tures of construction, combinations of elements, 30 clamped by a generally conical shaped ceramic and arrangements ofl parts as will be exempliiied cap I8. The top of lceramic cap I8 has a small in the structure to be hereinafter described, and depression lßa formed therein into which a pro the scope of the application of which will be jection I9, formed in the bottom 2o of header indicated in the following claims. 2V extends. Thus, when the several ceramic pieces In the drawing, wherein there is shown one 35 are assembled within support 4, and header 2 is trol thereof upon circuits including one or more of the various possible embodiments of our in vention, the single ligure is a sectional elevation installed in the top of cylinder I, projection I9 not only locates ceramic cap I3 in proper position, but securely holds it therein against transverse With reference to the drawing, we have gen and axial displacement, together with the bush erally indicated at I a rigid elongated cylinder therebelow. fabricated from any malleable, inexpensive metal 40 ings Header bottom 2a is provided with an opening such as iron, nickel or the like, the top and bot which may conveniently be sealed by an insulat tom of which are closed, respectively, by metallic ing seal 20 of glass or the like, through which a header members 2 and 3. Headers 2 and 3 may conductor 2l extends. Conductor 2| also extends conveniently take the form of reentrant cylin through ceramic cap I8 and is connected to 45 drical members fitting snugly within the interior anode I1. Another conductor 22 is disposed of cylinder I to which they may be secured in within cylinder I and is electrically connected to any suitable manner as by welding. grid I4. It may be seen that conductor 22 is Securely clamped between headers 2 and 3 electrostatically isolated from anode conductor within cylinderI is an elongated generally cylin by support 4 and cylinder I. drical metallic support, generally indicated at 4, 50 2l As noted hereinabove, support 4 includes a preferably comprising a tubular intermediate lower, outwardly flared section 1, and grid con section 5, an upper flared section Ii, and a lower duotor 22 extends by way of an insulator 22a ñared section 'I. The top of Support 4 abuts the through this section and through a seal 23 bottom of header 2, while the bottom of the sup mounted in the bottom 3a of header 3. From 55 port abuts the top of header 3. Hence, when the of our tube. 2,409,855 3 4 the above, it may now be seen that inasmuch as the several grids 9, I4 and l5, and anode Il, are Vdisc-shaped and are supported at their periph eries, and inasmuch as their supporting structure is formed of coaxial elements, a unitary struc ture is vprovided which is well able to withstand v substantial axial stresses as well as transverse stresses resulting from forces imparted axially and transversely of the tube. As these several ing said cylinder and respectively said headers, a plurality of insulating members supported by said supporting member, anode and grid ele ments supported by said insulating members in spaced relation, and an elongated cathode sup portedl by one of `said headers and» extending therefrom into said supporting member toward said elements. 2. An electric discharge device comprising, in parts are securely held in proper spaced relation 10 combination, a hollow metal cylinder closed at ship, continued shocks or excessive vibration can both ends by headers hermetically sealed thereto, have. no effect in displacing them relative to one an elongated metal cylindrical supporting mem another. Furthermore, inasmuch as the upper ber disposed within said cylinder, a plurality of portion of ceramic cap I8 is generally conical in shape, and is accurately located with respectv to 15 insulating members supported by said supporting member, anode and grid elements supported by header 2, assembly of the parts is greatly expe saidA insulating >members in spaced relationship, dited and lateral displacement thereof, which might otherwise occur from shock or vibration, ' and a cathode secured to one of said headers and extending into said supporting member toward said elements. Still further, as the side walls of support ‘i 20 3. An electric discharge device comprising, in diverge laterally at the upper and lower ends combination, a hollow metal cylinder closed at thereof so as to form substantially frusto-conical both ends by headers hermetically sealed thereto, portions terminating in enlarged cylindrical por an elongated supporting member disposed within tions, the support walls are well able to absorb all stresses imparted thereto from the inertia of the ' said cylinder and coaxial therewith, anode and grid elements supported by said supporting mem. grids and their ceramic bushings. ber in spaced insulting relationship, and a cath Top 3a of header 3 also has mounted therein is substantially precluded. insulating seals 24 and 25, and also has mounted thereon a post 26 which may be formed of glass ode secured to one of said headers and disposed within said supporting member. 4. An electric discharge device comprising, in or other suitable insulating material, and which extends upwardly and preferably coaXially of the 30 combination, a hollow metal cylinder closed at tube.- A support 2l is mounted in the upper end of post 26 and has a groove 27a formed in the top thereof. A filament wire or cathode 28 is sup- _ ported in groove 21a so `that the ends of the ñla ment hang -down from the groove and are con both ends by headers hermetically sealed thereto, a cylindrical supporting member secured within said cylinder, anode and grid elements supported by said supporting member, and a cathode sup ported by one of said headers and extending to ward said elements. 5. An electric discharge device comprising, in combination, a hollow metal cylinder closed at nected respectively to spring wires 29 and 3U, of desirable thickness and length, these spring wires in turn being respectively connected to conduc tors 3| and 32 which extend through 'insulating 40 both ends by headers hermetically sealed thereto, a cylindrical supporting member secured within seals 25 and 24. Thus post 25, filament support 27, filament wire 28 and control grid wire 22 all said cylinder, anode and grid elements supported extend, or rather are disposed in substantially parallel relationship to the axis of the tube, in which. position they are best able to withstand the stresses resulting from forces impressed on the tube axially thereof. The stresses imparted to ñlament support 21 are largely compressional, whereas those, imparted to filament >wire 28 are tensional. .It should. also be noted that spring wires 2S and 3d hold the filament wire taut during , assembly, and also accommodate such expansion as may occur in the filament upon heating thereof, with the result that the ñlament is con stantly maintained condition. . in a substantially taut l Y It will now appear that we have provided a tube of the character under consideration which is well able to withstand shocks and vibration With by said supporting member, and a cathode sup ported by one of said headers and extending to ward but spaced from said elements. 6. An electric discharge device comprising, in combination, a hollow cylinder closed at ,both ends, a supporting member within said cylinder, an anode peripherally supported by said support ing member, a plurality of disc-likegrids periph erally supported by said supporting member and spaced from one another and from said anode, and an elongated cathode mounted within- said cylinder and extending toward said grids. 7. An electric discharge device comprising,rin combination, a hollow cylinder closed at both ends by headers hermetically sealed theretdan elongated support mounted within said cylinder and coaxial thereto, a circular anode peripherally out any impairment of its operating eiiiciency. 60 supported by said support, a disc-like perforated As many possible embodiments may be made grid peripherally supported by said support, a of theA above invention and as many changes filament support mounted on one of said headers might _be made in the> embodiment above set and extending therefrom toward said grid, and forth, it is to be understood that all matter here a cathode filament mounted on said filament inbefore set forth or shown in the accompanying 65 support. drawing is to be interpreted as illustrative and 8. An electric discharge device comprising, in not in a limiting sense. , » combination, a hollow metal cylinder closedat both ends by headers hermetically sealed thereto, 1. An electric discharge device comprising, in combination, an elongated hollow metal cylinder 70 a hollow metal cylindrical support disposed within said cylinder and having a flared end en closed at both ends by metal headers hermetically gaging one of said headers, a disc-like anode sealed thereto, a metallic >supporting member mounted in said support, a plurality of disc-like Within said cylinder, said supporting member‘in grids mounted in said support, means associated _cluding a middle elongated cylindrical section and ilared end sections, said end sections engag 75 with said support for insulating said grids from lsaid anode, and a cathode iilamentv supported by We claim :_v 2,409,855 5 6 Y said last-mentioned header and disposed within said cylinder coaxially therewith, said support said support, ing member being substantially narrower along Y 9. An electric discharge device comprising, in combination, a cylinder closed at both ends by headers hermetically sealed thereto, anode and grid elements in said cylinder, supporting means in said cylinder for supporting said elements in said cylinder against forces exerted on said cylin its central portion than at its ends, anode and grid elements supported by said supporting mem ber in said narrower portion in spaced insulated relationship, and a cathode secured to one of said headers and disposed within said support ing member . der axially or transversely thereof, a ñlament in 12. In an electric discharge device comprising, said cylinder, and means in said cylinder for sup 10 in combination, a cylinder closed at both ends by porting said ñlament against shocks exerted on said cylinder coaxially thereof. 10. An electric discharge device comprising, in combination, a cylinder closed at both ends by headers hernietically sealed thereto, a shock re headers hermetically sealed thereto, anode and grid elements in said cylinder, supporting means in said cylinder for supporting said elements in said cylinder against forces exerted on said cyl inder axially or transversely thereof, a glass post sistant support disposed within said cylinder be tween said headers, disc-like anode and grid ele ments carried by said support in spaced relation, secured to one of said headers within said cyl inder, a metal post mounted in said glass post and extending therefrom, the free end of said metal post being bifurcated, ñlament wire looped means for insulating said elements from one an other, a cathode filament in said cylinder, and a 20 over said bifurcated end, a pair of conductors extending through said header, and resilient con shock resistant support carried by one of said nectors connecting the ends of said ñlament re headers for supporting said ñlament. 11. An electric discharge device comprising, in spectively to said conductors. combination, a hollow metal cylinder closed at both ends by headers hermetically sealed thereto, 25 an elongated supporting member disposed within CURTIS HILLYER, JR, HENRY BLACKSTONE.