US1293538A - Arc-welding electrode-holder. - Google Patents

Description

- J. E. PIERCE.

ARC WELDING ELECTRODE HOLDER.

APPLICATION FILED NOV. I2. 1918.

Patented Feb. 4, 1919.

amen/5oz Gam a,

JZFz/ w JAMES EDWARD PIERCE, OF ALBION, MICHIGAN.

ABC-WELDING ELECTRODE-HOLDER.

Specification of Letters Patent;

Patented Feb. 4, 1919.

Application filed November 12, 1918. Serial No. 262,201.

To all whom it may concern Be it known that I, JAMES E. PIERCE, a citizen of the United States, residin at Albion, in the county of Calhoun and tate of Michigan, have invented a new and useful Arc-Welding Electrode-Holder, of which the following is a s ification.

The subject of t is invention is an arc welding electrode holder.

The main object of the invention is the provision of a holder which may be readily and easily opened to receive the electrode, and which will afford safety to the operator or user.

Another object of the invention is the provision of a holder which may be easily disassembled for the removal and replacement of parts.

Another object of the invention is the provision of connecting means whereby the cable or conductor may be connected to the holder.

The invention also contemplates generally improving the construction and enhancing the utility of electrode holders.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the comination and arrangement of parts and in the details of construction hereinafter de scribed and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the inven tion.

A practical structure for carrying out the invention is illustrated in the accompanying drawing, wherein:

Figure l is a View in elevation of a holder constructed in accordance with the invention; I

Fig. 2 is a longitudinal section of the same;

Fig. 3 is an enlarged detail view in perspective of the push rod or bar.

- Referring to the drawing by numerals of reference In carrying out the invention there is provided a handle 1, preferably formed of wood, though any insulating material would be adapted for the purpose, which is formed with a longitudinal bore for the reception of a rod 2.

The rod 2 is formed of any good conducting material, preferably copper, and extends forwardly of the handle '1 for a suitable dlstance and is provided with an enlarged portion or head 3 at its extended end. nor the purpose of holding the rod or conductor 2 in place in the handle, the rod is tapped diametrically for the reception of a screw 4 which enters the tap through a suitable opening formed radially in the handle. The head of the screw 4 is sunk sufficiently below the surface of the handle to prevent contact with the hand of the operator.

That end of the rod or conductor 2 which extends from the rear end of the handle is threaded to engage the interior threads of the interiorly-exteriorly threaded coupling nut 5, which is threaded on the extending end of the rod 2 and the forward face of which rests firmly against the rear end of the handle. The exteriorly threaded portion of the coupling nut 5 is engaged by the interiorly threaded end of a tubular connector 6, the opposite end of which is formed with a flaring mouth, as indicated at 7. A cable 8 has its end inserted through the flaring mouth of the connector, and a wedge pin 9 is driven in from the opposite end of the connector between the exposed ends of-the wire of the cable to bind the cable and connector firmly together.

The flaring mouth of the connector avoids a tight binding edge at the place where the cable emerges from the connector against which the cable would be bent as the holder was moved from place to place, and which would cause a breakage of the cable at that location. The wedge pin connection makes it possible to readily cut off the end of the cable, when broken, drive the end and pin out the connect-or 6, and insert the new end of the cable and the wedge pin. This makes a rapid method of repairing the connection without the use of solder or other binding means.

A sleeve 10 incloses the forwardly projecting portion of the rod 2 and has a close slidin fit on the head 3 thereof. This sleeve is pre erably formed with an enlarged portion or head 11 at its forward end, and in this portion is provided a slot 12, which is disposed at an incline, as shown, and into which the forward end of the head 3 projects under normal conditions.

In order that the sleeve 10 may be retained in its normal rearward position, a compression spring 13 encircles the for- 'wardly extending portion of the rod 2 and The handle 1 is provided with a slot 16,

formed at its forward end and extending for a short distance longitudinally thereof, and this slot registers with a slot 17, formed in'the rear end of the sleeve 10, of which it extends longitudinally for a short distance.

A housing or casing 18 is provided on the sleeve 10, adjacent its rear end, and this casing enters the forward end of the slot 16 when the sleeve is in normal position.

push bar 19 is loosely'mounted in the housing 18, and the bifurcated rear end of the push bar straddles a lug or finger 20, which projects from a trigger 21, of wood fiber or other suitable insulating material.

' A split collar 22 encircles the handle 1 ad jacent its forward end, and is preferably positioned in an annular groove formed circumferentially of the handle. The collar is formed. with outturned apertured cars 23 between which the trigger 21 is mounted, being pivoted on a screw pin 24 which engages the ears and binds the collar in place.

The operation is as follows The device is disassembled by removing the connector 6 and the coupling nut 5. The

screw 4 is then threaded out and the sleeve 10'and rod 2 withdrawn from the handle 1. The socket wrench may then be slipped on the rod 2 and its prongs forced into the notches 15 of the threaded sleeve 14 andthe sleeve backed out of the sleeve 10. The rod 2 and spring 13 may now be withdrawn from the sleeve 10. r

In assembling the device, it is preferably held lower side up, as indicated or shown in Fig. 2. The rod 2 and spring 13 are inserted in the sleeve 10 and the threaded sleeve 14 screwed into the sleeve 10 until a proper tension of the spring 13 is had. Place the push bar 19 in the housing 18 and insert the rod 2 in the handle 1. Thread the coupling nut 5 on the end of rod 2, and

pull the trigger 21 to throw the sleeve 10 forward and insert an electrode wire 25 in place in the groove 12. This relieves the tension on the handle 1 and permits the screw 4 to be easily screwed in. The cable may now be connected and the holder is ready for use.

As will be understood from the foregoing,

the trigger is pulled to move the sleeve 10 forwardly, which draws the'head 3 ofthe place.

The sleeve 14, as will be rod 2 free from the slot 12 and permits.

electrode wire 25 to be readily inserted in It is evident that the holder is so constructed that the hand of the operator is thoroughly insulatedfrom the current carrying'rod 2. It is also apparent that the operation of the device is readily accomplished without necessity for the operator to shift his hand, as the trigger is within easy reach of his finger. It isfurther seen that there are no riveted parts in the device which are difficult to repair, and that the current is carried directly to the electrodes with no chance for short circuiting or heating of the handle.

Having described myinvention, what is claimed as new is V p 1. An arc welding electrode holder, including a handle having a longitudinal bore, a rod in the bore and extending forwardly of the handle, a coupling nut threaded on the rear end of the rod, a connector threaded on the nut, a cable secured in the connector, a sleeve inclosing the forwardly projecting portion of the rod and provided with a slot adjacent the forward end thereof into which the forward end of the rod normally projects, resilient means for retaining the sleeve. in its rearmost position, and a trigger for moving the sleeve against the tension of the resilient means to withdraw the rod from the slot.

necting a conductor to the rear end of the rod, a sleeve inclosing the forwardly projecting portion of the rod and slidable rectilinearly thereon, said sleeve having a slot adjacent its forward end into which the rod projects, means for retaining the sleeve, normally, in its rearmost position to project the rod into the slot, and means for sliding the sleeve-forwardly upon the rod to withdraw the rod from the slot whereby an electrode may be placed in the slot.

3' An arc welding electrode holder, including ahandle, a conductor rod carried by the handle, means for connecting a cable to the conductor rod, a sleeve inclosing a portion of the rod and slidable longitudinally thereof, said sleeve having a slot adj acent its forward end into which the end of the rod normally projects, means for normally retaining the sleeve in position with sleeve inclosing the forwardly projecting portion of the rod and slidable longitudinally thereof, said sleeve having a slot into which the forward end of the rod projects,

' means for normally holding the sleeve in position with the rod extending into the slot, and a trigger carried by the handle and operable to slide the sleeve longitudinally of the rod to Withdraw the end of the rod from the slot.

5. An arc welding electrode holder, including a handle, a conductor rod carried by the handle and extending forwardly thereof, there being an enlarged head at the forward end of the rod, a sleeve housing the for- Wardly projecting portion of the rod and slidable longitudinally thereon, the said sleeve having a slot into which the forward end of the rod projects, aspring encircling the rod and abutting the head at its forward end, means in the sleeve and engaging the spring to confine the spring within the sleeve, and operable to regulate the tension of the spring, the said spring normally retaining the sleeve in its rearmost position to project the rod into the slot, and a trigger carried by the handleand engaging the sleeve and operable to slide the sleeve longitudinally of the rod to withdraw the rod from the slot.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

JAMES EDWARD PIERCE.

Witnesses:

- H. G. PIERCE,

- C. G. GREGOROFF.

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