US1432411A

US1432411A - Electrode

Info

Publication number: US1432411A
Application number: US463226A
Authority: US
Inventors: Jr John H Payne
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1921-04-21
Filing date: 1921-04-21
Publication date: 1922-10-17
Anticipated expiration: 1939-10-17

Description

J. H. PAYNE, JR.

ELECTRODE.

APPLICATION FLED APR 21.1921."

Patented 00 5. 17, 1922.

I EI-XlFll Fig.2.

Patented Oct. 17, 1922.

UNITED STATES PATENT OFFICE.

JOHN H. PAYNE, JR., OI SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELEC- TRIC COMPANY, A CORPORATION OF NEW YORK.

ELECTRODE.

Application filed April 21, 1821. Serial No. 463,226.

To all whom it may comewt:

Be it known that I, JOHN H. PAYNE, J r., a citizen of the United States, residing at Schenectady, in the county of Schenectady, State of New York, have invented certain new and useful Improvements in Electrodes, of which the following is a specification.

My present invention relates to electrodes, and more particularly to grid electrodes for electron discharge devices.

The object of my invention is to provide a structure for a grid electrode made up of a large number of turns of wire of small diameter which will be self supporting, and which at the same time will be so arranged that adjacent turns of the wire will be maintained in desired spaced relation to one another. A further object of my invention is to provide such a structure in which there will be no necessity for welded joints be tween the different elements for maintaining them in their roper spaced relation.

The novel features which I believe to be characteristic of my invention are set forth in the appended claims, the invention itself, however, both as to its organization and method of operation will best be understood by reference to the following description taken in connection with the accompanying drawing in which Fig. 1 is an elevation of a complete grid electrode; Fig. 2 is an enlarged perspective on one end thereof; Fig. 3 is a still further enlarged detail view of a small portion; and Fig. llS a detail view of a modification.

As shown in the drawing, the electrode proper is made up of a helix of a large number of turns of small wire. In order to maintain the desired spacing between the turns of this helix, I provide a pluralityof smaller helices 2, 3, 4 and 5, which are in contact with the larger helix and so located with respect thereto that at least one turn of each of the small helices is interposed between every adjacent pair of turns of the large helix. Through each of the smaller helices, a rod 6 extends longitudinally so that each turn of the large helix where it passes through a small helix is ripped between the rod 6 and a turn 0? the small helix. By reason of this interlocking rela tion, the turns of the large helix are securely held in desired spaced relation to one another, without the necessity for any welded joints, and are also locked to the small hehces so that they cannot become disenga ed therefrom in any way.

11 the embodiment of my invention illustrated the helix 1 is supported u on supporting

arms

7, 8, 9 and 10, whic are secured to a sleeve 11 by means of which the electrode may be mounted upon'the stem of a vacuum tube in the usual way. The helix 1 may be secured to these supportin arms by means of binding wires 12, as in icated. In the modification shown in Fig. 4 two rods 13 and 14 extend longitudinally through each of the small helices and the turns of the large helix are held between these two rods.

While I have shown separate supporting

arms

7, 8, 9 and 10, the use of these separate arms is not essential as the small helices and the rods 6 may be made of such size that the rods 6 will be adapted to form the necessar supporting arms for the electrode.

hile I have shown and described the preferred embodiment of my invention, it will be apparent that my invention is by no means limited to the specific embodiment shown but that many modifications therein may be made without departing from the scope of my invention as set forth in the appended claims.

What I claim as new anddesire to secure by Letters Patent of the United States, IS I- 1. An electrode structure comprising a helix of large diameter, a plurality of helices of comparatively small diameter associated with the large helix in such a way that at least one turn of each of the small helices is interposed between every adjacent pair of turns of the large helix and a rod extending longitudinally through each of the small helices for locking the turns of the large helix in spaced relation to one another.

2. An electrode structure comprising a helix of large diameter, a plurality of helices of com aratively small diameter in contact with t e large helix with at least one turn of each of the small helices interposed between every adjacent pair of turns of the large helix and a rod extending longitudinally through each of the small helices in such a way that each turn of the large helix is interposed between the rod and a turn of each of the small helices.

It. .\n electrode structure comprising a plurality of turns oi wire, a wire helix associated therewith, in such a Way that at least one turn of the helix is interposed between ererv adjacent pair of turns of the wire. and "=1. rod extending longitudinally through the helix for locking each of the turns of wire in spaced relation to one another.

4. An electrode structure for an electron discharge device emnprising a plurality of supporting arms, a helix of large diameter surrounding said arms and supported thereby. a helix of comparatively small diameter associated with the. large helix in such a way that at least one turn of the small helix is interposed between every adjacent pair of turns of the large helix, and a rod extending longitudinally through the small helix in such a way that each turn of the large helix is interposed between the rod and turn of the small helix.

5. A grid electrode for an electron discharge device comprising a plurality of rigid supporting arms, a helix of large diameter surrounding said arms, a plurality of helices of comparatively small diameter associated with the large helix in such a way that at least one turn of each of the small helices is interposed between every adjacent pair of turns of the large helix, and a rod extending longitudinally through each of the small helices for locking the turns of the large helix in spaced relation to one another.

6. An electrode structure comprising a helix of large diameter, a helix of comparatively small diameter in contact with the large helix and With at least one turn thereof interposed between every adjacent pair of turns of the large helix, and a rod extending longitudinally through the small helix in such a Way that each turn of the large helix is interposed between the rod and a turn of the small helix.

In Witness whereof, I have hereunto set my hand this 20th day of April, 1921.

JOHN H. PAYNE, JR.