US429273A - Secondary battery - Google Patents

Description

a l. Y

C. HERING.

. SECONDARY BATTERY. l

Patented June 3, 1890.

(No Model.)

UNITED STATES PATENT @mica CARL HERING, OF PHILADELPHIA, PENNSYLVANIA.

S'ECON DARY BATTERY.

SPECIFICATION forming part of Letters Patent No. 429,273, dated June 8, 1890.

Application iiled May 24, 1889.

To all whom t r11/ay concern.'

Be it known that I, CARL HERING, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Secondary Batteries, of which the following is a specification.

My invention relates to means of supporting the elements of a secondary battery.

The object of my invention is to provide means for supporting the elements in the liquid to enable them to be readily removed, inspected, and renewed without having to unsolder joints, to provide a cheap and simple method for supporting` the material of the anodes and cathodes, and to provide replacealolev conductors for the same.

Referring to the accompanying drawings, Figure 1 is a vertical cross-section of a cell. Fig. 2 is an elevation of the same with some portion removed. Fig. 3 is a top view of same. Fig. 4 shows two connected conductors for the active material. Fig. 5 shows one block of the active material. Fig. 6 is a vertical cross-section of a cell containing only one pair of blocks.

A A are solid blocks of lead peroxide, which may be made by mixing lead oxide with a solution of a salt of lead, pressing the mixture in a mold and drying it and forming it, one side of each heilig fiat and preferably surfaced and the other side being somewhat cylindrical.

B B are blocks of spongy lead.

C C are the replaceable conductors, which are made of lead or lead alloy, and which lie against the fiat sides of the blocks of active material.

D D are non-conducting straps, preferably perforated, which lie against the rounded sides of the blocks of active material.

E E are rigid plates of non-conducting material.

F F are non-conducting bolts, which pass through the whole set of plates composing a cell and bind them together.

G G are stops of insulated material between the straps D D, by which they are held apart, and the pressure of the bolts is brought to bear upon the blocks A A and B B.

H H are stops of non-conducting material between the straps and at the edges of the Serial No. 311,931. (No model.)

spongy lead blocks B B, relieving them from excessive pressure from the bolts F F. The conductors C C are connected in the ordinary way at their top, forming the terminals of the cell.

I do not bind myself, in the construction and connection of a secondary-battery cell made in the manner described, since, should any other method be hereafter discovered for making porous battery-plates, it is evident that I may use the same wit-hout departing from the principles of my invention herein described. It is evident that a cell may contain one pair of blocks, as shown in Fig. 6, or two pairs or four pairs, as shown in Fig. l, or that its size may be increased in any direction by increasing the number of these sets of blocks vertically or in either direction horizontally, and therewith the capacity. In this way any number of blocks may be combined into one cell. These blocks I maybe made of one standard size-say of ten ampere hours capacityand a cell of any dimensions can thus be built up with them. Small blocks adapted to this purpose are readily molded or pressed, and can therefore be made very cheaply.

The only perishable part-namely, the lead conductors for the peroxide plates--can'i readily be replaced at small cost, and any defect` ive blocks can readily be renewed, and a block which may break will not necessarily fall out, but will remain in as good working condition as before. The dead-Weight is reduced to a minimum. Ample room is given for expansion in all directions, as well as for unequal expansion of the active material and its conductor, and buckling is eectually prevented.

I claim as my invention- 1. The combination, in a secondary-battery cell, of two or more blocks of lead peroxide in positions parallel to each other, with removable eonducting-plates and two or more blocks of spongy lead in positions parallel to each other, with conducting-plates a-nd removable clamps adapted to hold said blocks severally in Contact with their conducting-plates and upon removal to allow said plates and blocks to be removed.

2. The combination, with two lead peroxide blocks, as A, and two spongy lead blocks, as B, having conducting-backings, as C, between IOO All. The een'lbinsLtien,with :L peroxide bleek, ns A, and :L spengy lend bleek, as l, eendneters, as C, clamps, as E F, and steps, als Gand ll, ef perforated flexible nen-conducting straps, as l), adapted te receive the pressure 0 the elemp, te held the blocks in contact with their Conductors, und te admit the pas- Sage ef the current through the perferatiens.

VEARL IIERING.

lVitneSses;

(menen I IeUsE, IIENRY V. MASSEY.

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