US567045A

US567045A - rhodin

Info

Publication number: US567045A
Authority: US
Publication date: 1896-09-01
Anticipated expiration: 1913-09-01

Description

(No Model.)

J. G. A. RHODIN. PLATE FOR SECONDARY VOLTAIG BATTERIES.

No.567,046. Patented Sept. 1, 1896.

TO LITHQ, wAsmumou n L UNITED STATES PATENT O FICE.

JOHN G. A. RHODIN, OF CLIFTON HALL, ENGLAND, ASSIGNOR TO THE CHLORIDE ELECTRICAL STORAGE SYNDICATE, LIMITED,. OF CLIFTON JUNCTION, ENGLAND.

PLATE-FOR SECONDARY VOLTAIC BATTERIES SPECIFICATION forming part of Letters Patent No. 567,045, dated September 1, 1896.

Original application filed September 25, 1895, Serial No. 564,966. Divided and this application filed April 23, 1896. Serial No. 588,815. (to model.) Patented in England May 2,1895, No. 8,728; in France September 4,1895,N0.250,070; in Belgium September '7, 1895, No. 117,303,- in Cape Colony g t mber 26,1895,N0.492; in Hungary September 29,1895,N0- 8,723; in New South Wales October 14, 1895, No. 6,121; in Italy October 22, 1895, LXXVIII, 99; in Victoria October 22, 1895, No. 12,611 in Austria November 6,1895,No.45/4,197; in Canada November 9,1895,No. 50,530, and in Spain November To all whom it may concern.-

Be it known that I, JOHN GUSTAF ADOLF RHODIN, a citizen of Sweden, residing at Clifton I-Iall, near Manchester, in the county of Lancaster, England, have invented certain new and useful Improvements in Plates for Secondary Voltaic Batteries, (for which Ihave obtained patents in the following countries, viz: Austria November 6,1895,N0.4,197/; Belgium September 7, 1895, No. 117,303; Canada November 9, 1895, No. 50,530; Cape of Good Hope September 26, 1895, No. 492; France September 4, 1895, No. 250,070, Great Britain May 2, 1895, No. 8,728; Hungary September 29, 1895, No. 3,723; Italy October 22, 1895, LXXVIII, 99; New South Wales October 14, 1895, No. 6,121; Spain November 25, 1895, No. 17,936, and in Victoria October 22, 1895, No. 12,611,) of which the following is a specification.

This invention relates to the construction of plates and of plugs forsecondary batteries, and is a division of my application for Letters Patent filed September 25, 1895, and numbered in serial 564,966.

The invention consists in the novel construction of battery-plates and of the plugs of active material therefor as hereinafter described and claimed.

In the accompanying drawings, Figure 1 is an elevation of part of a plate constructed in accordance with my invention. Fig. 2 is a cross-section. Fig. 3 is a detail of the plug of active material. Fig. 4, 5, 6, and 7 are perspective views of sections of different forms of sheets which when rolled form plugs of active material.

In the said drawings, the reference-letter A designates the frameplate alloyed with a little antimony and provided with perforations A for the reception and retention of the plugs of active material,the edges of said perforations being preferably chamfered off, as

' shown in Fig. 2, to facilitate the introduction of the plugs.

The reference-letter B designates a plug of active material to fit the perforations A .of the plate A. This plug of active material is constructed with projecting solid ribs, as shown in the drawings. These projecting solid ribs may be given different forms, such as illustrated at b, 5 and b and instead of being continuous, as in Figs. 4, 5, and 6, they may be discontinuous, as in Fig. 7, and the ribs may be formed upon both sides of the strip of lead, as shown in Fig. 4, or upon one side thereof only, as in Figs. 5 and 6. The projecting ribs are joined together bya film, which serves to keep them together. These plugs are inserted in the respective perforations and are acted upon by the electrolyte for production of the requisite active material or peroxid.

In the preferable practice the frame-plate is laid on a fiat bed and preferably the ends of the roll plug inserted into one of the holes and cut off level with the face of the plate, and this is continued until each perforation is occupied.

The plate when prepared in accordance with myinvention to be used as a positive plate is then treated by any of the Well-known methods for the formation of peroxid on the plugs, the expansion under such action serving to secure the plugs firmly in place.

- The invention is equally applicable to negative plates. The plugs constructed in accordance with my invention have great regularity of structure and are sufficiently permeable to allow passage for the electrolyte through them, and they admit of expansion without injury to the frame-plate. They have good conducting contact with the frame, and the method of construction is simple, economical, and perhaps preferable to the construction of plugs of separate wires or rods, as described in my application for Letters Patent of which this is a division.

In Fig. 6 I have illustrated a form of plug wherein the projecting solid ribs are formed upon one side only of the sheet or strip, the other side being fiat.

Having thus described the nature of this invention and in what manner the same is to be performed, I claim 1. The herein-described plate for secondary batteries consisting of a perforated frameplate, in .combination with plugs composed of a roll of lead provided with projecting solid ribs joined by a thin film of lead, said plugs filling the perforations of said frame-plate and JOHN G. A. RHODIN.

Vitnesses:

Mrs. S. BROADFOOT, PERCY W. HOLT.