US2317780A

US2317780A - Welder's electrode holder

Info

Publication number: US2317780A
Application number: US445291A
Authority: US
Inventors: Laskey Clifford
Original assignee: Individual
Current assignee: Individual
Priority date: 1942-06-01
Filing date: 1942-06-01
Publication date: 1943-04-27
Anticipated expiration: 1960-04-27

Description

C. LASKEY WELDERS ELECTRODE HOLDER April 27, 1943. 2,317,780

Filed June 1, 1942 2 Sheets-Sheet l .FfiGJ- FTI'E'L 4) l I i v 9 4 /8 3i ll '3 3w r 29 F f l 1:) I: m 29 23 la 23 20 4 2o 22 I ll I r 40 40 4-6 I, INVENTOR. 4- CLIFFORD LASKEY,

4 TTOE NE Y8.

Patented Apr.-27', 1943 OFFICE wnmmn's Emc'raonn nomma Clili'ord Laskey, Albany, Calif. Application June 1, 194 2, Serial No. 445,291

Claims. This invention relates to welders electrode holders of the type adapted to be connected to a are retained between spring jaws. tually impossible to fully insulate the tong type be relatively inexpensive to manufacture and convenient to operate. -It is a further object of the invention to provide an electrode holder of such simple constructionthat it maybe readily disassembled for inspection, maintenance and repair and replacement of parts.

These and other objects of the invention will become more apparent as this specification proceeds and the particular novelty of the device will be defined in the appended claims. a

In the drawings forming a part hereof,

Figure 1 is aside elevation of the device forming the subject matter hereof,

Figure 2 is another side elevation of the device with'the parts tion,

Figure 3 is a vertical sectional view taken along the line 3-3 of Figure 1, and

Figure 4 is another sectional view taken along the line 4-4 of Figure 1.

The electrode holder forming the subject matter of this application was designed primarily, though by no means exclusively, for use in shipbuilding. It is well known that in shipyards thereof in slightly different posi- -welding electrode holders are subjected to extremely rough usage and that as a consequence the repair and replacement costs are exceedingly high. It is also a well known fact that the holders most commonly used in this particular art are of the tong'type wherein the electrodes As it is vir-= holders the exposed contact points are the cause of countless accidents in which the operator is injured, or the work surface damaged, or the holder itself isdamaged or destroyed. For. example, when any conducting part of the devices comes in contact with grounded metal the cur- 1 of oppositely disposed

openings

21 and 28, alined rent will arc causing flashes orburning, the

latter being extremely destructive in character.

The electrode holder forming the subject matportion of cover ll.

ter hereof overcomes the stated and other objections'to the prior art 'devicesin that it is a fully insulated structure.

Referring now to the drawings wherein there is illustrated a preferred embodiment of the invention, the numeral Hi designates an elongated conductor tube of copper, or other conducting material, encased within a cover H of insulating material, such as pressed paper fiber or the like. As will be noted from Figures 3 and 4, the conductor tube iii is open-ended and its upper end is enclosed by the cover ll. The cover I! is rigidly secured on the conductor tube Ill by means of a pin H which is preferably, though not necessarily, of fiber or other suitable insulating material. 7

The conductor tube in is provided with com plemental longitudinally extending slots i5 projecting downwardly from its upperend. The insulating cover I i likewise has a pair of complemental longitudinallyj-extending slots l8, terminating short of its upper or closed end and in registry with a substantial portion oi the slots II in tube Ill. The registering portions of slots l5 and I6 provide clearance for pin 20, of fiber or other insulating material, connecting rod retaining plunger 2!, slidably disposed within the tube l0, and sleeve 22 telescoped'upon theupper It will thus be seen that sleeve 22 and the rod retaining plunger 2| are coupled for unitary movement within the limits defined by the length of the slots 16 in cover H, or by a welding rod I! inserted into the device.

The device forming the subject'matter of this application will retain an electrode l8 in two separate and distinct positions, first, at right angles to, the body of the structure and second,

at an oblique angle (see Figure 3). This is made possible by the use of a tubular insert 25 secured within the upper end of tube HI by means of a pin 26. The insert 25 is provided with a pair The rod retaining plunger ii is normally urged upwardly past the

openings

21 and 28 in the tubular insert 25 and against the cross pin 16 by a coil spring 34. The upper end of the spring l4 welding operations.

tube iii by means of a cross pin 31.

The lower end of the cover ii is encased ,within a grip 39 secured adjacent its upper end by means oi a fiberpin 40 extending through tube id and cover ii. As will be noted from Figures 1 and 2, the grip 39 is relieved at one side, as at the former to be slipped from the cover ll.

Grip

39 maybe removed by simply tapping out pin 40 M, to facilitate movement of the holder withv respect to a conventional electrical cable 32 with which it is adapted to be connected.

An improved means for connecting the conductor element iii of the holder with the cable G2 is, shown in Figures 3 and 4 as comprising obliquely disposed slots as 'cut into one side of tube 59 and terminating in a pair of medially disposed openings is adapted to receive a wedge pin 455. Having stripped an end of cable 62 of its conventional insulation tobare wires (it, theend of the cable is inserted in the lower end of tube it to dispose the mass of wires oppositeand extending beyond the complemental openings lid. Wedge pin 65 isthen driven into the slot 63 to obtain a connection between the cable and the tube sufficiently rigid for all normal operations,

but also a connection which may be conveniently broken for inspection or repair of the holder by tapping out the wedge pin dli. 7

From the foregoing it will beseen that the construction and operation of the device is comparatively simple. In making the holder ready for use, the operator has merely to pull the sleeve 22 downwardly on cover ll, against the tension of the coil spring 35, to expose the opening 29 in cover i I, the elongated slots IS in tube it! and the

complemental openings

28 and 21 in the insert 25,

v for insertion of the electrode it.

If it be desired to place the electrode l 8 at right angles to the body of the holder for ,normal welding operations, the rod I8 is inserted through opening 29 in cover ll, slot I5 in tube land into the

openings

28 and 21 in insert 25, with its inner end abutting cover it. (See Figure 3.) By then releasing the sleeve 22 the tension of spring -34 will urge the plunger 2| upwardly in tube Hi I against rod H3, at which point it will be held or gripped with sufiicient rigidity for all normal Additionally, sleeve 22 is notched, as at 28, to bear directly against and aid in proper positioning of rod l8.

If it be desired to dispose the rod ill at an oblique angle to the body of the holder for overhead or close work, the sleeve 22 and the plunger 2l coupled therewith are simply moved downwardly to expose undercut 30 in insert 25. Rod I8 maybe then inserted through the opening 29 in cover ll, slot IS in tube In, the opening 28 in insert 25, with its inner and below the undercut 30 in insert 25, and into slot at the opposite side of tube ill and abutting cover I I. Again, the tension of spring 34 will urge plunger 2| upwardly in tube ID to hold the rod IS in position.

(See dotted lines in Figure 3.)

The burned down stubs of rods "l8 may be quickly and conveniently removed from the holder by simply pulling downwardly on sleeve 22 and inverting the device permitting the stub to drop from the-holder.

The breakdown of the device for inspection and ,repair is an extremely simple operation in that it is but necessary to tap out the fiber pin to separate sleeve 22 from plunger 2| permitting 31 permits withdrawal of spring 35, the associated cup seat 36 and plunger 2|.

An important feature of the present invention is the fact that except when a rod i8 is inserted for normal operations, the device is fully insulated and provides a dead end for the cable 42 when the device is not in use. Thus it may be conveniently laid on any surface such as grounded metal or the like without the usual dangers thought to be a normal incident of the use of electrode holders as a class.

From the foregoing it will be seen that I have provided a welder7s electrode holder having many advantages and a high degree of utility in this art. It will be understood that while I have shown and described herein a preferred embodiment of the invention, nevertheless, the principles thereof may take other forms and for this reason protection is'desired according to the iull tubular member, an electrode receiving opening in,the cover in registry with one of theslots in the tubular member, said cover also having a pair of complemental slots spaced apart from one of its ends in registry with a portion of the slots in the tubular member, an electrode engaging member slidably received in the tubular member, a spring seated in the tubular member normally urging the electrode engaging member past the electrode receivingopening in said cover, a sleeve of insulating material slidably encasing a portion of said cover and having a non-conducting coupling through the slots in said cover and the tubular member with the slidable electrode en'- gaging member. I

2. A welders electrode holder comprising, a tubular electrical conductor, a. pair or complemental slots extending longitudinally of the tube from one of, its ends, an insulating cover for the tubular member, an electrode receiving opening in the cover in registry with one of the slots in the tubular member, said cover also having a pair or complemental slots spaced apart from one of its ends in registry with a portion of the slots in the tubular member, an electrode engaglng member slidably received in the tubular membet, a spring seated in the tubular member normally urging the electrode engaging member past the electrode receiving openingin said cover; and means within the tubular member defining a two position seat for the innermost end of the electrode inserted through the opening in said cover.

-3. A welders electrode holder comprising, a

tubular electrical conductor, a pair of complemental slots extending longitudinally of the tube from one of its ends, an insulating cover for the. tubular member, an electrode receiving opening in the cover in registry with one of the slots in ing member slidably received in the tubular memher, a spring seated in the tubular member normally urging the electrode engaging member past the electrode receiving opening in said cover, a sleeve of insulating material slidably encasing a portion of said cover and having a non-conducting coupling through the slots in said cover and said tubular member with the slidable electrode engaging member, and means within the tubular member defining a two position seat for the innermost end of the electrode inserted through the opening in said cover.

4. A welders electrode holder comprising, a tubular electrical conductor, a pair of complemental slots extending longitudinally of the tube from one of its ends, an insulating cover for the tubular member, an electrode receiving opening in the cover in registry with one of the slots in the tubular member, said cover also having a pair of complemental slots spaced apart from one of its ends in registry with a portion of the slots in the tubular member, an electrode engaging member slidably received in the tubular member, a spring seated in the tubular member normally urging the electrode engaging member past the electrode receiving opening in said cover, a tubular insert in the tubular member having on one side an opening in registry with the opening in said cover and overlaying one of the slots in said tubular member, and on its other side a pair of openings one of which complements the first mentioned opening.

5. A welders electrode'holder comprising, a tubular electrical'conductor, a pair of complemental slots extending longitudinally of the tube from one of its ends, an insulating cover for the tubular member, an electrode receiving opening in the cover in registry with one of the slots in the tubular member, said cover also having a pair oi complemental slots spaced apart from one of its ends in registry with a portion of the slots in the tubular member, an electrode engaging member slidably received in the tubular member, a spring seated in the tubular member normally urging the electrode engaging member past the electrode receiving opening in said cover, a sleeve of insulating material slidably encasing a portion-of said cover and having a non-conducting coupling through the slots in said cover and the tubular member with the slidable electrode engaging member, a grip of insulating material encasing the end of the cover opposite that which receives the electrode.