US692433A - Electric accumulator. - Google Patents

Description

Patent'ad Feb. 4,- I902. C. P. ELIESON 8:. V. BE BDBINSKY.

ELECTRIC AGCUMULATOR.

(Application filed May 15, 1901.)

(No Model.)

lNVf/VTORS:

. WJIWD.

m: NORRIS PETER; cm, monnmwu wAsnmcnona.

Nrrnn STATES PATENT OFFICE.

CHAIMSONOVITZ PROSPER ELIESON AND VLADIMIR DE BOBINSKY, OF

PARIS, FRANCE.

ELECTRIC ACCUM ULATOR.

SPECIFICATION forming part of Letters Patent No. 692,433, dated February 4, 1902 Application filed May 15,1901. Serial No. 60,315. (No model- To all whom it may concern:

Be it known that we, CHAIMSONOVITZ Pnos- PER ELIESON and VLADIMIR DE BoBINsKY, subjects of the King of Great Britain, and residents of Paris, France, have invented certain new and useful Improvements in Electrical Accumulators, of which the following is a specification.

Our invention relates to electrical accumulators comprising very thin bands or strips of lead, which are alternately corrugated and straight and form very clear and regular spaces. The mounting of the accumulator allows the said strips to expand in a transverse direction laterally, because on the edges there is no mounting uniting the said strips of lead together. These strips, which constitute the active surface of the accumulator, are united together by a central core of lead, which constitutes a kind of backbone, from each side of which extend the thin strips of lead, or, again, this accumulator may be said to be similarin appearance to a birds feather, the shaft of which constitutes the central con ductor and the lead strips resembling the vanes of the feather. A plate of our accumulator is reduced to what We have just explained; but in order that it may not get out of shape and that it shall possess suflicient strength when handled we strengthen it with a frame, which is, however, completely insulated and which in no wayinvolves the employment of metal. At the top and bottom we arrange cross-pieces of wood, ebonite, or other insulating material, and on the sides we arrange small strips of wood, ebonite, or other like material. Pieces of india-rubber placed on the said bands and embracing the upper and lower cross-pieces give sufficient strength to the whole and serve at the same time to separate the plates. In this manner with a very little weight we construct an accumulator of great electrical capacity, which will not get out of shape, because the small strips of lead, which constitute the active elements, extend from a central conductor and can freely expand. Moreover, our accumulator-plate is clearly distinguished from plates of known construction by the absence of all metallic covering-frames.

Having thus explained the principle of our accumulator, we will describe by way of example a practical way of carrying out our invention with reference to the accompanying drawings.

Figure 1 represents a plain strip at. Two or preferably three of them are generally placed upon one another, as shown in Fig.2. Fig. 3 represents a corrugated strip .2; and Fig. 4 shows, on a smaller scale, a band formed of several corrugated strips. Fig. 5 is a front elevation of an fiOClllIllllfill0P-Plitt6 formed with superposed strips. In this figure a part is broken away in order to show the strips on the side. Fig. 6 is a side elevation. Fig. 7 is a horizontal section. Fig. Sis a section on the line M N, Fig. 5; and Fig. 9 is a section on the line P Q. Fig. 10 is a horizontal section showing several juxtaposed plates, the accumulator. comprising two positive plates interposed between three negative plates.

Each accumulator-plate is constructed of two columns composed of a certain number of lead strips or and b and which are alternately corrugated and flat. These lead strips a Z; are free at their outer sides; but at approximately the middle of the plate they are united together by lead strips 0, connected by solder with the ends of the strips a and b. The two columns are placed almost side by side, the two supports 0 0 receiving between them a strip of lead d. With grains of solder e the said lead strip cl is united to ribs 0 c of the two columns. As shown, the accumulator plate is provided at the middle in the direction of its length with a compound strengthening-rib comprising the united strips 0 and d, on each side of which extend small lead strips a and I), designed to constitute the active surfaces of the accumulator. The middle rib thus formed extends upward in the form of a lead stem f, whereby the plate can be handled. The latter has connected to one side of its upper part a lead rod g, as indicated in Fig. 5, which serves to establish the connectionsforcommunicatingcurrent. The accumulator-plate is completed bya number of upper and lower cross-pieces '53, of Wood, ebonite,or other insulating material. Wooden strips 70 7.: are applied to the sides, and pieces :00

of india-rubber placed over the strips of wood 7c and over the cross-pieces ij bind the whole of the plate together and also serve to separate the adjacent plates. The plate thus formed is a positive plate. A negative plate is constructed in the same manner, with the difference that there are no wood strips 70 k. The connecting-rods of the positive plates are always on the same side. Those of the negative plates are all on the opposite side. In Fig. 10 the middle plate is a negative plate, and on each side are two positive plates, the two end plates being also negative plates.

We would observe that, contrary to the arrangements usually adopted, this accumulator-plate has no metallic frame.

70 claim- 1. An electric accumulator-plate comprising a central conducting-core, and strips of thin lead alternately flat and corrugated, at-

tached at one end to each side of the core and free at their other end.

2. The combination with an accumulatorplate having a central conducting-core, and

strips of thin lead alternately flat and corru- 2 5 gated, attached at one end to each side of the core and free at their other end, and a strengthenin g frame comprising upper and lower cross-pieces of insulating material and indiarubber ligatures binding the whole together 30

Images