US1565603A

US1565603A - Electron-discharge device

Info

Publication number: US1565603A
Application number: US256825A
Authority: US
Inventors: Russell F Trimble
Original assignee: Western Electric Co Inc
Current assignee: AT&T Corp
Priority date: 1918-10-04
Filing date: 1918-10-04
Publication date: 1925-12-15
Anticipated expiration: 1942-12-15

Description

Dec.

. R. F. TRIMBLE ELECTRON DISCHARGE DEVICE Filed Oct. 4, 1918 //7 ven/"ak:

Russel! F Tr/mb/e Patented Dec. 15, 1925.

UNITED STATES PATENT OFFICE.

RUSSELL F. TRIMBLE, OI ELIZABETH, NEW JERSEY, ASSIGNOR TO WESTERN ELEC- TRIO COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

ELECTRON-DISCHARGE DEVICE.

Application filed October 4, 1918. Serial No. 256,825.

To all whom it may concern-.-

Be it known that I, RUssELL F. TRIMBLE, a citizen of the United States, residing at Elizabeth, in the county of Union, State of New Jersey, have invented certain new anduseful Improvements'in Illectron-Discharge Devices, of which the following is a full, clear, concise, and exact description.

This invention relates to electron discharge devices and pertains especially to vacuum tubes of the audion type.

An object of this invention is a vacuum tube wherein the possibility of breakage of the-glass supporting structure for the electrodes, is materially reduced.

To attain this object the glass arbor from which the electrodes are sup orted, instead of being a continuation o the press, is anchored to the tubular portion of the stem. The anchoring of the arbor to the stem reduces the strain on the press and provides a connection capable of sustaining severe jarring without breaking.

For further details of the invention, reference ma be made to the drawings, in which Fig. 1 s owsv in perspective a vacuum tube which illustrates the preferred form of; mounting, and Fig. 2 is an elevation of the arrangement shown in Fig.1.

Referrin in detail to the drawings, the vacuum tu%e 1 contains within it two V- shaped filamentary cathodes 2, a pair of grid aces 3 and 4, and a pair of plate or

anode surfaces

5 and 6. This invention is not restricted to anyparticular manner of connecting these electrodes, which may, however,'be connected as shown in the patent to Arnold No. 1,129,942, March 2,1915.

The vacuum tube 1 is provided with the usual inwardly projecting tubular portion 7, the top 8 of whichhas been compressed to form a so-called press in which the lead wires are sealed. At one side of the tubular portion 7, at the point 9, is anchored an arbor 10, from which extend the supporting wires 11, 12, 13 and 14 which are connected at one end to the arbor and at their outer ends to the plate electrode 6. From the top of the arbor extends supporting

wires

15 and 16 for positioning the grid, and the wires 17 and 18 for supporting the filament. The arbor is anchored to the tubular portion 7 at a point equidistant from the ends of the press 8, and issues therefrom substantially radially, after which it is bent to parallelism with the axis of the tubular portion whereby it is located outside of the area bounded by the electrodes, and lying beyond the direct line of action between the electrodes, it does not interfere with the flow and control of space current therebetween.

- The plate 5 is supported from the plate 6 by four wire arms, only two of which, 19 and 20, are shown, the other two being lo cated at the other side of the plates. These plates are provided with upturned edges, as shown, to which the

wires

19, 20 are welded. Lead wire 21 is provided for the plates.

The bottom of the grid is supported by wires 22 and 23, anchored to the press 8. Electrical connection to the grid is provided by the lead 24.

Leads

25 and 26 connect with the filament, the former being connected to the ends of the filament by way of the stiff wires 27, 28, which are sealed in the press 8 and which position the ends of the filament. The middle of the filament is connected to the wire 26 by'the supporting wire 29. This arrangement serves to connect the two halves of the filament in parallel. Y

The arbor 10 is anchored to the tubular portion at'such a point that the planes of all electrodes are substantially parallel to the plane of the press 8, which brings the electrodes into such positions that the lead wires may be readily connected thereto. The filament or'cathode is furthermore substantially in the plane of the pressand the other electrode surfaces are symmetrically disposed about it.

\Vha't is claimed is:

1. In an electron discharge device, a containing vessel comprising a stem terminating in a flat press, a plurality of leading-in wires sealed in said ress and lying substantially in the same p ane, an arbor anchored to said stem at a point removed from said press, and a plurality of electrodes supported cated outside of the space bounded by said electrodes and outside of the plane of said leading-in Wires, said arbor, press and sup porting connections thereto comprising substantia ly the only means for supporting said electrodes.

3. In an electron discharge device, a containing vessel comprising a reentrant stem terminating in a press, an. arbor anchored to said stem 'at a point removed from said press, said arbor having its major portion arallel to the axis of said stem and offset rom the surface of said stem, a plurality of electrodes supported by said arbor, and

lead Wires for said electrodes sealed in said 1 RUSSELL F. TRIMBLE.