US2092771A - Welding electrode holder - Google Patents

Description

Sept. 14, 1937. o. w. MYERS WELDING ELECTRODE HOLDER Filed Sept. 1,, 1936 FIG! FFQZ

INVENTOR BY OSCAR W MYERS ATTORNEY Patented Sept. 14, 1937 UNITED STATES PATENT OFFICE Application September 1 Claim.

1, 1936, Serial No. 98,870

(Granted under the act of March 3, 1883, as amended April so, 1928; 3'10 0. G. 757) This invention relates to an electrode holder, and has for an object to provide an improved electrode holder particularly adapted for holding an electrode used for arc welding purposes, where- 5 in the electrode may be rotated to any desired degree and held at any desired angle, but where the gripping holder and the cable remain stationary, that is, non-rotating.

A further object of this invention is to provide an electrode holder wherein the electrode is held in uniform tension provided by a spring, yet wherein the electrode may be easily released therefrom when desired with a minimum of effort.

A still further object of this invention is to provide an electrode holder made up of a number of easily assembled parts, light in weight, convenient to operate, and capable of carrying high amperage for the electrode without itself becoming too hot to handle.

With the foregoing and other objects in view, the invention consists in the construction, combination and arrangement of parts, as will be described more fully hereafter.

v In the drawing:

Fig. 1 is an elevational view of the electrode holder in completely assembled position;

Fig. 2 is a top plan view of Fig. 1, the releasing lever and spring being omitted.

The electrode holder shown at l comprises a plunger bar ll having an electric cable l2, suitably secured thereto in any convenient manner within the insulating handle l3. It will be observed that the plunger bar I l is of substantially the same diameter as the cable l2, and will be of a suitable material such as copper or the like, so that it can carry the full amperage carried by the cable l2 with substantially no heating effect whatever.

Extending upwardly from the plunger bar II are a pair of arms H which are apertured at their upper end so as to provide a journal for the releasing lever l5, which may be pivoted through the aperture in the arms by means of a bolt l6. Releasing lever I is in the-form of a bell crank lever and has bifurcated arms 11 at one end provided with oblong slots I8, the other arm l9 resting against a compression spring 26, the other end of thecompression spring 20 being set in the recess 2| within the handle l3. As will be apparent, the compression spring 26 tends to pivot the releasing lever l5 about the pivot l6 and away from the handle.

A hollow sleeve 22, having an outturned flange 23 at one end thereof, is provided with a pair of links 24 ending in enlarged knobs 25 which extend into the oblong apertures la in arms i1 so as to cause the longitudinal movement of the sleeve 22 to be controlled by the lever 15. A second sleeve 26 is swivelly connected to the sleeve 22 as by having a bell 21 integrally formed at one end thereof, adapted to engage over the flange 23 of sleeve 22. A plurality of fingers 2B are provided on the bell 21 and are adapted to be folded over the flange 23 of sleeve 22 so that the sleeve 26 will partake of the longitudinal movement of the sleeve 22, but will be free to rotate relative thereto.

The sleeve 26 is of such length that it just extends beyond the end 36 of the plunger bar II. This end of the sleeve 26 is provided with a pair of aligned apertures 29 through which the electrode may be inserted. The electrode may be inserted through both the apertures 29, in which case it will extend at right angles to the direction of the plunger H, and will be held tightly between the end 30 of the plunger H and the sides of the apertures 29 by reason of the compression spring 26 urging the bell crank lever IS in an anticlockwise direction, thus drawing the sleeve 26 in the direction of the handle l3. Instead of placing the electrode through both apertures 29 it may be inserted through one of the apertures 29 and out through the end of the hollow sleeve 26, in which case it will be held at a 45 angle to the plunger II. In either case, the sleeve 26 with the electrode may be freely swivelled about the plunger H, while the plunger H and handle I3 are held stationary, that is, non-rotative, thereby enabling the electrode to be held conveniently at any angle suitable to the work being performed. When the electrode is substantially used up and it is necessary to replace the same, it is released by merely pressing the arm IQ of bell crank lever l5 against the compression spring 20, and a new electrode may be substituted.

' Other modifications and changes in the proportions and arrangements of the parts may be made .by those skilled in the art without departing from the nature and scope of the invention, as defined in the appended claim.

The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.

Having thus set forth and disclosed the nature of this invention, what is claimed is:

An electrode holdercomprising a plunger bar, an electric cable connected to one end of said plunger bar, a. handle encompassing the con 10 a second sleeve rotatably secured to the further end of said first mentioned sleeve, the unsecured end of said second sleeve having apertures therethrough, said apertures being adapted to receive an electrode therethrough, said spring normally urging said bell crank lever to draw said sleevesonto said plunger bar to thereby hold an electrode extending through the apertures in the second sleeve against the end of the plunger bar.

OSCAR W. MYERS.

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