US867319A - Electrode. - Google Patents

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- J. w. STUBBS. v

ELECTRODE. APPLICATION FILED APE-9,1907- V T/VES S 55 f w PATBNTBD OCT 1 1965. I 4

UNITED STATES PATENT. OFFICE} JOHN wr LIiM STUBBS, F MIDDLEWIGH, ENGLAND, ASSIGNOR TO THE GENERAL GREAT BRITAIN.

ELECTROLYTIC BARENT COMBANY LIMITED, A JOINT STOCK COMPANY, OF

nmcrnonn.

. Patented Oct. 1, 190

To all whom it may I I Be it known-that I, Joan Wmuur' saunas, asub ject of the King of GreatBritain', residing at Middlewich, in the county of Chester, England, have invented a new and useful Improvement in Electrodes, of which the following is a specification. l'

This invention relates to electr'o des'liziving conductors partly protected from the electrolyte, and carbon blocks connected to the conductors and exposed to the 10 electrolyte, and the object is to provide a composition of high conductivity which may be readily molded round the endsoi the conductors to protect them while the surface of the mass of coir 'ition may be finished of a form which can be readilyfiited into the usual ex 5 ternal carbon blocks, so as to render renewal of the latter easy. In carrying out the invention we 'mix ggether powdered carbon or graphite, resin, and tetra orid of car bon, the resin and tetrachlorid being in sufficient proportion to make a soft or plastic mass which can be easily molded or poured round the end of the conductor and between any projections thereon without leaving any spaces, and it is then'allowed to dry, or it may be heated to drive off the tetrachlorid of carbon. The invention -is illustrated in the accompanying drawings in which, I Figure 1 is a sectional view of one form and Fig. 2 is a like view oianother form.

In Fig. 1. ais a metal conductor covered for the greater part with Portland cement b. c is a mixture of graphite, resin, and tetrachiorid of carbon, molded'roundthe end d of the conductor, the outerv surface s of the mass beingfornied to fit into an opening f in the usual carbon block g. The end d of the conductor is thus efiiciently protected from chlorin or other corrosive agents in' the 3b electrolyte and at the same time the electrical resistance of the junction is reduced, while when theblock'g. is 3 worn it can readily be removed and a new one put on.- h is cement for protecting the outer end of the conductor when the opening f is made completely through the 40' block 9.

Fig. 2. is similar to Fig. 1. except that the conductor a instead of being all metallic is provided with carbon pins 11 to connect with the outer blocks g. When these pinsbecomeworn awayat the ends, which happens after {5 long use and causes loss of efficiency, the pins are repaired by reducing the ends at j preferably to a hexagonal shape, and then molding roimd such ends the mixture of carbon or graphite resin, and tetrachlorid of carbon, as before described. The invention is simi- 5'0 larly applicable'to other forms of conductor.

Iclaim. a In .the construction or an electrode tl? combination with .the end of an electrical conductor 0 of a mixture -or powdered carbon. resin, and tetiachiarid 0155 if carbon, substantially as den-mined.

In testimony er-co I have signed my name to thisspecification, in the presence of twosubscrlbing witnesses.

JOHN WILLIAM STUBBS. Witnesses:

W. B. JonNsoN, Jsuns BARRON.

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