US1347776A - Electrode-holder - Google Patents

Description

R. H. CHADWICK. ELECTRODE HOLDER. APPLICATION FILED SEPT. 23. 1919.

1, 7'76. Patented July 27, 1920.

/7 20 Wmm Inventor- Ralph H. Chndwi ok, y 4. His Attorney.

Fort Wayne, in the county I of which the following is a such as are used in soldering,

3lrconsequently 2 is aview,

'u'N TED. STATES.

PATENT OFFICE.

Yunnan n. cmmwrcxg or roar WAYNE, INDIANA, ASSIGNOR r0 GENERAL ELECTRIC GQMPAZN'Y, A conronnrron 01E" NEW YORK.

' ELECTRODE-HOLDER.

Patented July 27,1920.

Application filed September-23, 1919: Serial no. a25,e4s.

To all whom it may concern: 4

Be it known that I RALPH H. CHADWIOK, a citizen of the United States, residing at of Allen, State of Indiana, have invented certain new and useful Improvements in Electrode-Holders,

specification.

My invention relates to electrode holders for holding carbon electrodes and the like. More particularly my invention relates to manually ,manipulated electrode holders welding and like operations depending on the heat generated by resistance of the electrode to th passage of an electric current. Y

The object of my; invention is to provide an improved holder of this type which is rigid and not easily liable to depreciation through use, and one inwhich' supply or renewal parts may be readily applied. A still further object of; my invention is to provide an improved arrangement of parts whereby the power losses in the'parts of the electrode holder itself, are materially reduced. A

In accomplishing this end 1' have made use of a novel arrangement for securing together the mum of securing means are employed and little power is consumed in resistance jo1nts,.and the whole is quickly assembled and disassembled.

Also, those parts which. are liable to 'be heated by eddy currents, such as are induced where alternating currents are used in the electrode, rials, thus materially reducing the inherent losses incidental to use of such electrodes.

For a more complete understanding of the nature and objects of my invention referones should be had to the following detailed" description when taken in connection with the accompanying drawing in which: 1 Figure 1 is a-vi'ew, mainlyin-longitudinal section, of an electrode holder constiucted in accordance with m invention; while Fig.

principal y diagrammatic, showinglghe application of my invention.

I 'ferring now to the drawings, 10 represents a-'sleeve for the electrode holder having a split portion'lll so as to readily receive a carbon or other suitable electrode, as indicated at in Fig. 2. -The split porof an insulated cable 18 several parts whereby a mini-,

are made of non-magnetic mate-.

tion 11 has a'screw 12 workingin a well known manner in the parallel cars 13, formed on opposite portions of the split sleeve, in order that the electrode may be properly secured therein. I The sleeve with, but projecting away from it, the shank or elongated arm 14, which has an enlarged portion 15 adapted to be inserted in the cylindrical insulating member 16; the latter being suitably shaped for manual manipur lation by theroperator using my device.

The enlarged portion 15 has a central bore arranged to receive the bared end 17 which cable is adapted to be connected as' for instance as indicated in 2 to one terminal of a transformer, electrode C. The manual member, the electrode holder, and the cable are conveniently secured together b means of the screw' 20. The screw 20 penetrates the wall of member 16 in register wi h a threaded opening in the wall of the enlarged portion 15, and bears upon the bared end 17 in order to force it into good electrical contact with the. metal of the electrode holder. I A coiled spring 21 is inserted in the end of the manual member 16, surrounding the cable 18 as it emerges from the end of member 16 in order to takethe edge strain, due to flexure of the cable, off that portion which is 'immediately'exterior to the member 16, as iswell understood; Such springs, have heretofore generally been are used to supply the electrical ener y, such steel springs become unduly heated currents induced. therein; able to use s rin rial such as p osp or bronze.-- a w The electrode holder, which I have deit is hence preferscribed, is particularly adapted for solder- 4 welding, andlike operations through cable .18 to the electrode C, thence throu h the job itself (not shown)-"to the for supplying current to the made of steel, but where alternating currentsy reason of the eddy of nonmagnetic mateclip" whichis attached during the operation to some convenient point on the job or j ob holding vise; and thence through the cable 23, attached to the cli to the other terminal of the source of M. F. Such transformer as has been indicated .at T

would be a step down transformer where the primary P was lighting circuit.

he arm 14 is preferably of such length that very little heat is conducted from the electrode C back to the member 16, 'but my improved means for uniting the elementsof the electrode holder avoids all use of solder in making electrical connections. Hence there are no' parts to get loose or joints to depreciate 01*. make bad electrical contact by reason of the heat conducted into the member- 16 softening the solder heretofore generally been-used. Moreover the use of but one securing means,

tapped onto a commercial as at 20, makes the removal of an old holder 10 and the substitution of a new readily accomplished.

aving now described what is at present to me for carryingone very the best means known out an embodiment of my invention, I would have it understood that such means are that I do not meanmerely illustrative and to belimited thereby to the exact details shown norin the choice of recognized equivalents except as defined in my claims hereunto appended.-

What I claim as new and desire to secure by Letters Patent of the United Statesis 1. An electrode holder, comprising a sleeve member provided with a shank, an insulating member adapted. to receive a por-- tion of said shank, said portion being formed to receive an electric cable to be electrically connected. with said shank por! tion within said insulating member, and

unitary means for uniting in having a bared end her, and cable in operative relation said insulating member, said shank and said cable. a

2. 'An electrode holder, comprising a sleeve member provided'with a shank, an insulating member adapted toreceive a portion of said shank, said portion being formed to receive 'an insulated electric cable portion adapted to be secured in electrical contact with said shank, and a securing means in the wall of said insulating member arran ed both to hold said shank in place in said insulating memher and to force said end portion of the cable into electrical contact with said shank.

3. An electrode holder, comprising a sleevemember provided with a shank, an insulating member adapted to receive a portion of said shank, said portion being recessed to receive an insulated electric cable having a bared end adapted to enter therecess formed in theshank portion within said insulating member, and a screwpenetrating both the wall of said insulating. member and said shank and engaging said bared end of thecable when in said recess. 4. An electrode holder for use in connection with alternating currents, comprising an electrode. holding sleeve provided with a shank, an insulating portion of said shank and adapted for manual manipulation, said shank being adapted to receive a cable entering said member and. to make electric contact therewith, a funitary means forsecuiiing said shankf -memoperative relation, and non-magnetic means secured in saidmember for avoiding edge-strain on saidgcab'le at the point where it enters said membern In witness whereof I haveflhereunto set 1 my hand this 15th day of, September,1919.-

---RALPH Hi member enveloping a

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