US1617354A

US1617354A - Electric-welding tool

Info

Publication number: US1617354A
Application number: US10165A
Authority: US
Inventors: De Elbert A Reynolds
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-02-19
Filing date: 1925-02-19
Publication date: 1927-02-15
Anticipated expiration: 1944-02-15

Description

"Feb. 15,1927. 7,3

DE ELBERT A. REYNOLDS ELECTRIC WELDING T001.

Filed Feb. 19. 19.25

. ATTORNEY.

Patented Feb. 15, 1927.

UNITED STATES 1,617,354 PATENT OFFICE.

DE manner a. REYNOLDS, or Yommas, NEW Yoax;

ELECTRIC-WELDING TOOL.-

Application filed February 19, 1925. Serial No. 10,165.

This invention pertains ,to certain new and useful improvements in portable electricwelding tools.

. An objectof this invention 1s to provide a simple, cheap and effective device for electrical welding, where the electrical current may be directly conveyed to the partsto be welded without danger to the operator while simultaneously handling the parts to perform the desired mechanical operations. This device is of special importance in the manufacture ofsmall articles such as radio receiving sets and the like.

In one form of my invention, I prefer to make the device in the form of a pair of pliers constructed of fiber, condensite or other non-electrically conducting material,

the outer ends of the pliers being distended,-

and upon which are respectively fitted metal jaws of desired varied form to adapt the device to the particular character of work as to locate the insulate to be performed. These jaws are respecthe following detail description and the ac-' .companying drawings, in which- Fig. .1 is a plan view of one form of my. invention;

Figs. 2, 3, 4 and 5 are detail plan views of different forms of aws for attachment to the plier form of my invention.

Referring to the drawings, 1 and 1 rep 'resent the handles of a pair of plier members of non-electrically conducting material,

which are hinged at 2 in the usual manner as in the ordinar pair of pliers of metallic construction, an normally held in a distended condition by the spring 3. One handle 1 of the pliers is preferably groove? in its inner face 4, to receive the cord 0 insulated wires 4*, conveying the electrical current from any suitable source of electrical supply. One form of jaws 6 and 6 are Sl'lOWIllI'l Fig. 1 and each

jaw

5, 5 is provided at its inner end with a recess 6, .r 6 snugly receiving one of the projections 7 7 at the forward ends of the non-elec trically conducting handles 1, 1 The exposed

wire terminals

8, 8 are filled in the faces of the projections 7 7 0). the set of the shorter juxtaposed ends of the plier members to electrically contact with the re I spective jaws 5,. 5* b frictional engagement.

The openings 9 an 9 are provided in the

pro ections

7, 7 respectively registering with similar openings 10, 1O in the

jaws

5, 5" for receiving the locking pins 11, 11

respectively.

The

'aws

5, 5 are preferably provided with t

especial contact points

12, 12 usually located adjacent the extremities of the inner faces of the

jaws

5, 5 to attain a localized mechanical engagement with the parts, grasped by the jaws 5, 5'? and simultangously a'locahzed electrical contact therewit i In Fig. 3, I have illstrated another form of

plier jaws

13, 13 which are shaped with converging, reduced forward ends 14, 14

for simultaneous mechanical and electrical engagement without the provision of special electrical contacts. The rearward ends are provided with the recesses 6, .6? similarly as above described for receiving the

projections

7, 7 of the plier handles 1, 1 and

openings

10, 10* for the locking pins 11, 11.

Fig. 4 shows another form of

jaws

15, 15 of relativel sharp and blunt shape and bent at their

orward ends

16, 16 toward one another, similarly as in the construction of Fig. 3.

The form of jaws shown in Fig. 4 is particularly adapted for holding a pair of wires to be welded or soldered to one another and for such purpose I- provide the

grooves

16, 16 respectively adjacent the extremities of the aws.15, 15 and

cam locking members

17, 17, respectively eccentrically pivoted at 18, 18 and provided with the manipulating projections 19 19, whereby each wire may e-locked within a groove of the jaws.

Fig. 5 illustrates a form of

spider plier jaws

20, 20 which .are bent convergingly at their

ends

21, 21.

From the above, itwill be perceived that mfv form of pliers is adapted for many forms 0 operations of simu taneous mechanical handling and electrical soldering or welding by a single operation and if desired solely by the use of one hand of the operator, and at all times the operator is protected from the physical contact with the electrical parts.

ing plug may be located in the cord 4*,

adjacent the end of the'handle 1 to facilitate cutting off the electrical current when changing the form of jaws and also when the pliers are laid down idly'orstored.

The jaws may be secured to the pliers by frictional fit, in which circumstance each recess 6, 6 is preferably of wedge form,

the wedge converging in the direction toward the inner face of the jaw to thereby attain maximum frictional contact when pressure is applied to the handles against the work.

In the use of my invention, it is only necessary to bring the parts to be electrically welded together between the

contact points

12, 12 on the converging ends of the respective jaws under a slight pi'essure in orderto heat the parts while simultaneousl fusing the solder applied thereto or to sufli ciently fuse the metal parts adjacent the points of engagement to autogenously weld the parts to one another. My invention also protects the operator from the effect of the, heat developed in the soldering or weldingoperation by reason of the heat insulation afforded by my pliers or frame.

Whereas I have described my invention by reference to specific forms thereof it will be understood that many changes and modifications may be made without departing from the spirit of the invention.

I claim:

'1. In weldin pliers, a pair of plier members including handles having exterior surfaces wholly of electrically non-conducting material, means for pivotally connecting said plier members to one another intermediate their ends, a pair of insulated electrical conductors carried by said handles, the ends of said electrical conductors being exposed and positioned at one set of the'juxtaposed ends of said plier members respectively, and a pair of jaws of electrically conducting ma terial secured respectively to said juxtaposed ends of said plier members and respectively their ends a air of insulated electrical conductors carried by said handles. the ends of said electrical conductors being exposed and positioned at one set of the juxtaposed ends of said plier members respectively, a pair of jaws of electrically conducting material and means for rcmovably securing said jaws respectively to said juxtaposed ends of the plier members and in contact with said exposed ends of the electrical conductors respectively.

3. In welding pliers, a pair of plier members including handles having exterior surfaces wholly of electrically non-conducting material, means for pivotally connecting said plier members to'one another intermediate their ends, a pair of insulated electrical conductors carried by one of said handles, the ends of said electrical conductors being exposed and positioned at one set of the juxtaposed ends of said plier members respectively, and a pair of jaws of electrically conducting material secured respectively to said juxtaposed ends of said plier members and respectively in contact with said exposed ends of the electrical conductors.

4. In welding pliers, a pair of plier members including handles having exterior surfaces wholly of electrically non-conducting material, means for pivotally connecting said plier members to one another intermediate their ends, a pair of insulated electrical conductors carried by said handles, the ends