US1700478A - Electron-discharge device - Google Patents

Description

Jan. 29, 1929..

A. HADDOCK ELECTRON DI SCHARGE DEVICE Filed Nov; 20. 1.922

' wen/m? Ar) ur Haddock? y Patented Jan. 29, 19 29.

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rat-Es NEW JERSEY, ASSIGNOR T0 WESTERN ELECTRIC GOMJPANY, INCORYORATED, OF NEVt YORK, N. Y., A CORPORATION OF NEW YORK.

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Application fi1ed1q'ovember 20, 1922. Serial No. 601,954.

This inventionrelates to electron discharge devices and more particularly to vacuum tubes of the exterior anode type and has as its object to remove efliciently from the anode the excess heat generated therein.

This invention provides .a coolin device comprising a jacket havin means or supporting an exterior anode e ectron discharge device with substantially the entire active surface of the anode exposed to the cooling fluid. The configuration of the jacket adja-- cent the inlet port thereof is such as to cause a cooling fluid admitted to the jacket under pressure to traverse a substantially helical path around the anode.

Other objects and novel features of the invention will be apparent from the following description andaccompanying drawing wherein Fig. 1 is an elevation partially in section of the water jacket-with an electron discharge device therein. Fig. 2 is a plan view of the water jacket' and Fig. 3 is a detail view of the lower end of the water jacket taken at right angles to the showing in Fig. 1.

A. substantially cylindrical casing 10 hav-=- traverse a helical path around the anode 15.

ing an exterior flange 11 nearits mid point comprises a water jacket which is adapted to be arranged in an aperture in a frame with the flange 11 serving to support the jacket from the :traine. The open end of the water acket is interiorly threaded to receive a bushing 12'having an angular flange 13 project'- ing inwardl at one end, the inner wall of the bushing eing divergent at the other end.'

The electron discharge device 14 comprises a metallic cup-shaped portion 15 which serves the anode of the device and a glass portion which is fused to the flared rim of the anode. Just beyond the inner end of theflared portion of the anode there is provided an outwardly extendingflange 16 which comprises a closed plait formed from the metal of the anode. This plait is supported from the flange 13, there being interposed between the plait 16 and the flange 13, an annular gasket 17 of rubber orother suitable m'ateriaL. A two-part collar 18 surrounds the anode and restson the plait 16. This collar is provided with an exterior shoulder 19 which is engaged by the lower rim of the annular cap 20 screwed on to the bushing 12.

In assembling this device; the bushing 12 is first screwed into the water jacket and is permanently fastened in place, the threads tightened until the pressure'exerted beingsealed with solder or other suitable material. The gasket 17 is then laid on the flange 13 and the anode15 passed there- .through until the plait 16 engages the gasket.

Prior to the insertion of the anode 15 in the water jacket, the apertured cap 20 is slid over the anode. The aperture in the ca is of such diameter as to pass freel over t e plait 16,

but of smaller diameter t an the diameter of the flare of the anode 15. The two portions of the collar 18 are then placed around the anode resting on the plait 16 after which the cap 20 is screwed on the threaded bushing and r it through the collar 18 establishsa water tight Eonnection between .the' plait 16 and the an e 13.

T e water jacket is provided near its upper end with an outlet 21 and at its lower portion with an inlet 22, each ofwhich is directed substantially tangentialof the inner wall of the jacket. The bottom of the water jacket is shaped to provide a substantially helical channel 23 communicating with the inlet port whereby the incoming water is caused to The passage of the water around the anode effectively wipes ofl any air bubbles, thus prep venting localoverheating.

This type of connection between the water jacket and the anode of the electron discharge device exposes substantially all the surface of the active portion of the anode to the cooling fluid whereby heat may be readily dissipated from the anode through the cooling fluid. a

The invention'clalmed 1s: 1. In combination, a cylindrical water jacket, 2. bushing therefor having an inwardly projecting flange, inlet and outlet ports in said jacket, an electron discharge device comprising 2. containing vessel having a metallic anode portion, a second flange extending outwardly from said metallic portion and resting a containing vessel having a cup-sha ed anode with a flare at one end, a flange a jacent said flared end, an annular cap surthreaded at one end, a bushing screwed into said jacket, said bushing having an inwardly projecting flange, an exterior anode electron dischar e device having a flange projecting outwardly from the anode, said anode flange being supported from said first flange, a gasket interposed between said first and second flanges, a collar resting on said anode flange, a cap screwed on to said bushing and having a portion engaging said collar whereby pressure may be applied to establish a fluid tight connection between said flanges.

In witness whereof, I hereunto subscribe my name this 17th day of November A. D 1922.

ARTHUR HADDOCK.

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