US1326134A - Ralph d - Google Patents

Description

H. D. MERSHON.

ELECTRODE FOR ELECTROLYTIC APPARATUS.

APPLICATION FILED APR. 2. 19u.

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@afg @r1-fur Maya-@WL UNITED sTATEs PATENT oEEioE. V

RALPH D. MERSHON, 0F NEW YORK, N. Y.

ELECTRODE FOR ELECTROLYTIC APPARATUS..

Application filed April 2,

To .all whom t may concern: y Be it known that I RALPH D. MERsHoN,a citizen of the United tates, residing at Newl .-York, county and State of New York, have vobject isto provide an electrode of aluminum or other suitable metal, having for eX- bends, as at 11.- Preferably7 p'osure to the electrolyte a superficial area which is large in proportion to the bulk of the electrode. Another object is to provide an electrode thatn ot only has the largel superficial area indicated, but which also possesses the mechanical strength needed to meet the various conditions ofactual use. To thesey and other ends vthe invention consists in the novel features hereinafter described.

One form of the invention is illustrated in the accompanying drawing, in which- Figure 1 is an elevation of the electrode.

Fig. 2 is al vertical section on line 2 2 of Fig-1.

Fig. 3 is a horizontal section on line 3-3 of Fig. l'. l

Fig. 4 is a detail perspective View.

My improved electrode consists essentiall of a crimped plate 10 of sheet metal, preferably very thin sheet metal, say a few thousandths of an inch thick, surrounded and carried by a suitable supporting frame.

As stated, the plate 10 is crimped, that is, it is corrugated in form, the folds, crimps, or corrugations being deep and close together but out of contact with each other throughout their length, andtheir sides are Asubstantially parallel to each other. Pref- Fig. 3. To facilitate circulation of the elec- I trolyte and flow of current through the same when the electrodes are in use the crimps ,or folds are perforated at their the perforations are mere slits, with their edges spread apart as indicated in Fig. 4, to enlarge the openings. this way apertures of good size are obtained without diminishing the area of the metal exposed to the electrolyte as would be Athe case if parts of the metal were actually punched out.

1917. Serial No. 159,146.

The crimped plate may be made all in one piece, but it is more convenient to make it in two or more sections, for instance three, as shown in Fig. 1.

The supporting frame ispreferably all 'metal, and in the form shown it consists of vertical angle bars forming side members 12, and upper and lower cross members 13, riveted or otherwise fastened together. To

.increase the stiffness of the cross members they are slotted at the ends, as at 14, and the intermediate portions are bent to give them a curved cross section, as shown in Fig. 2. The edges of these bent portions may project beyond the surface of the late 10 so that when the electrode is laid own on a table or other flat surface the crimped plate will not come in contact therewith. The ianges on the side bars l2, extending Specification of Letters Patent. Patented Dec, 23, 1919,.

oppositely to the bent portions of the cross members, perform alike function forV the other side of the plate. v

For the purpose of holding the plate 10 securely in the frame the inner edges of the upper and lower members 13 are seated in slots 15, Fig. 2, in the upper and lower edges of the plate. l

Electrical connection of the crimped plate with the external circuit is preferably made through the supporting frame. purpose at lea-st one member of the frame is made of metal, preferably the upper cross member, and the terminals of the 'crimped plate are welded or soldered thereto.r These vterminals can be conveniently formed by cutting strips 16 from the edges of the final folds at the sides of the plate sections. The terminal strips thus provided are bent up and inserted in slits 17 cut in the upper cross member'of the supporting frame and are soldered or welded thereto; By preference the slits are formed in tongues 18 cut out of the bent portions of said cross members so that the strips will be gri ped bv the spring pressure 'of the two ha ves of the vtongues as well as by the soldered or welded connection therewith. i

The Hat end portions or ears 19 or the upper and lower cross members afford convenient points 4for grasp by 'supporting- For this vtioned, say) a few thousandthsof an inch, composed of aluminum or .similar metal, is so easily deformed that it-has heretofore been difficult if not impossible to vuse metal of -such thinness, inasmuch as when arranged side by side in the electrolyte the plates are apt to bulge at the center or bend at the edges and thus come'into contact one with i another. But by mounting each plate in a separate frame, as described above, thel in-v dividual plates aremade practically rigid 'and the proper spacing and separation in `the electrolyte is easily maintained. Moretribution of the heat generated in the apparatus, and also to facilitatethe freeing of bubbles from the surface of the plates.

-It'is to be understood that the invention is not limited to the specific construction herein described, but can be embodied in other forms without departure from its spirit.

I claiuu-v 1. An electrode for electrolytic appara' tus, comprising a crimped plate of sheet metal having apertures extending across they crimps or folds, and a supporting frame surrounding the plate, having crossf members extending through said apertures to support the platein said frame.v

2. An electrode for electrolytic apparatus, comprising a crimped or folded plate of sheet metal having slots extending across the crimps or folds, and a supporting frame surrounding the plate, having cross members arranged with their edges seated in said slots to support the plate in said frame.

3, An electrode for electrolytic apparatus, comprising a crimped orlfolded plate of V-sheet metal, a supporting frame surrounding and secured to the crimped plate and having a metallic member, and one or more terminal strips extending from the crimped late and welded to the said metallic memer to afford electrical connection therewith. l

4. A n electrode for electrolytic apparatus, comprising a crimped plate of sheet' metal, a supporting frame' surrounding and secured to the plate and having a metallic member, and one or more terminal strips integral with the plate andwelded to the said metallic member.

5. An electrode for electrolytic apparatus, comprising a'crimped or folded plate of sheet metal having apertures in the bends of the crimps or folds.

v6. An electrode for electrolytic apparatus, comprising a crimpedor folded plate ofl sheet metal having slots in its edges across the crimps or folds, a supporting frame surrounding the plate having vertical and cross-members the latter arranged with their edges seated in said slots to hold the plate in the frame, at least'one of the members of p plate and the metallic member.

` the frame being metallic, and a welded con- .nection between the 7. An electrode for the purpose described,

Vthin sheet metal having closely spaced folds the sides of which are' parallel, and a rigid l` frame surrounding the crimped `sheet and serving to maintain the same in proper form'.-

In testimony whereof I hereunto aiiix my signature. l A

RAL-tra n. Maestros.

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