US385558A - Dddde - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

P. KING.

SBONDAR'Y BATTERY.

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3 Streets-Sheet (No Model.)

F. KING. SEGONDARY BATTERY.

PatentedJuly 3, 1888! (No Model.) 3 Sheets-Sheet 3.

P KING SEGONDARY BATTERY..

No. 385,558. Patented July 3, 1888.

Miran STATES Arena* rrrcrs.

FRANK KING, OF FULHAM, COUNTY OF h/IDDLESEX, ENGLAND.

ECON DARY BATTERY.

SPECIFICATION forming part of Letters Patent No. 385,558, dated July 3, 1888.

Application filed April 4, ISS-8. Serial Na. 9.179.605. (No modehi Patentcd in England December 10, 1887, No. 17,047.

To aZZ whom it may concel'n:

Be it known that 1, FRANK KING, a subject of the Queen of Great Britain and Ireland, and a resident of Fulham, in the county of Middlesex, England, have invented certain new and useful Improvements. in Secondary Batteries, (for which I have obtained Letters Patent in Great Britain, No. 17,047, dated December 10, 1887,) of which the following is a specification.

My invention is an improvement in secondary batteries.

The improvcmentrelates to the arrangement or construction of the battery whereby the two series of plates of oppositc name or Character istics are firmly, compactly, and dnrably asscinbled together to form the two elements of the couple,while one element maybe removed without disturbing the other.

The object of 1ny improvemcnt is to pre- Vent buckling` of the positive-pole plates when such plates are subjected to overdischarge or ill usage, as sometimes happens, and to provide for rcmoving said plates for repair or substitution.

I have shown and described my inveution as applied to a battery in which plates of lead containing numerous cells or perforations are pasted with an oxide of lead. One series of snch plates are provided with projections at their lower corners. The projections on each of these corners are united by burning 77 to a strip of the same material, so that they are iirnily united, a regular interval or space being maintained between each pair of plates. There are similar projections on each side about midway the distancc to the top corners, and the projecting lugs on one of the upper Corners are likcwise united. This arrangeinent provides at five points forfirmly and dnrably uniting with considerable mechanical strength the hydrogen, spongy metallic lead, or negative-pole plates. The pcroXide or positivepole plates are only united in two placesat the lugs projecting` from an upper corner and at a point on the upper edge between the corners. They are provided with projections between the upper and lower corners on the edge of the plates,\vliieh rest upon the bars of lead uniting the firstnamed plates. Suitable sections of insulating material are used to elec- 'trically separate them at these points.

For separators I use two parallel strips of insnlating material united at one end like a hair-pin or tuning-fork. These are slipped onto the peroxide plates and held in position by a notch or by notches in or on said plates.

The accompanylng drawings illustrate my iuvention.

Figure 1 is a complete perspective view. Fig. 2is a section parallel with a plate or element. Fig. 3 is a cross-section. Fig. li is a plan view showing details in position. Fig. 5 is a view of the Separator employcd in this arrangement, and Fig'. 6 is a section of insulating material upon a series of which the plates of one element rest.

The two elements M and N are composed of a series of perforated lead plates, each perforation containing an active or absorptive material, as an oXide of lead. The plates are arranged alternately or interleaved, and they are immersed in an electrolytic liquid within a containing-cell, O. These interleaved plates are neccssarily separated by insnlating niaterial. 1 prefer to use separators in the form of parallel strips united at one end, I), Fig. 5, and theplates are notched, as at a, to prevent displacement of these separators, which are placed on the plates forming` one element, N, so that the two parallel pieces are upon opposite sides of the plate. I prefer to use hard rubber for this pnrpose.

There are usually more plates in the negative than in the positive element. As shown, there are three positives and four negatives. These positives are sometimes deformed by unfavorable conditions, ignorance, or abuse, and in such cases it becomcs necessary to temporarily remove them, besides providing` means to prevent this deformation or buckling. To make a meehanically strong pile, while at the same time allowing one element to be removed without disturbing the other, I unite the series of plates forming the negative element in five places by lugs or strips of lead, as at a b c (Z e.

d and e are at the bottom of feet or projections, which raise the plates from the bottom of the cell and afford free circulation for the liquid. The plates forming the other element, M, are united at two points only, :r and 9/, and they are furnished with projections, as shown at h h', which rest upon the straps b and c,

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uniting the first-named series of plates, thus suspending the plates of element M above the bottom of the cell, so that finely-divided lead dropping out of the perforations and falling to the bottom of the cell cannot electrically unite the two elements. At points where the projections h 71,' rest upon the straps or lugs of the other element I place saddles i, of insulating material, as hard rubber. (Shown in Fig. 6.)

Itisintended that the element M, united electrically and niechanioally at five points, shall remain fixed in position, and that by placing one hand upon each strap w and y of the element N that element may be readily removed, repaired, and replaced.

The lugs Z and Z' form the electrical terminals of the cell.

lVhat I clain1,and desire to secure by Letters Patent, is

1. In a secondary battery, an element consisting of two or more plates mechanically' united at two or more points, combined with a second element consisting of plates interleaved or alternating with the plates of the first element, both elements being located in an inclosing-cell containing an electrolytic liquid.

2. In a secondary battery, the combination of two series of verticall y disposed plates forming the two elements, one series having feet or projections at the lower edge thereof to provide free circulation for the electrolyte, the second series of plates having projections resting upon the first series, but insnlated therefrom, substantially as described.

3. In a secondary battery,two or more plates or elements having` feet or projections at the lower Corners thereof, combined with strips of conducting material uniting such projections and secnring them at a uniforin distan ce, substantially as described.

4. In a secondary battery,two or more plates or elements united at one or more points intermediate the upper and lower edges by bars or strips of conducting1naterial,wherehy they are united and secured at a uniform distance apart.

5. In a secondary battery, two or more plates mechanically secured together at two or more points below the upper edge thereof, whereby they are maintained at a uniform distance with respect to each other.

6. In a secondary battery,two or more plates mechanically and electrically united at two ois more points upon or in proxiinity to the upper edge, in combination with two or more plates alternating therewith and electrically united at two or more points below the upper edge, substant-ially as described.

7. In a secondary battery, the combination of two series of plates foruiing the two elements of the battery interleaved or alternating with each other, one series being niechanically and electrically united at two or more points between the upper and lower edges, the other series being` mechanically and electrically united at or about their upper edge and having projeotions resting upon the first-named series, whereby they are supported in a movable position, snbstantially as described'.

8. In a secondary battery, the combination of two series of plates alternaling with each other and forming, rcspectively, the two elements, one series being mechanically and electrically united at two or more points below their upper edge, the other series being similarly united at two or more points above the points of union in the first plates and having projections rcsting upon the first plates, but insulated thcrel'roin.

9. In a secondary battery, the combination of two series of ve1ticallydisposedinterleaved plates forming the two elements, one series being supported by the other, but insulated therefrom, substantially as described.

10. In a secondary battery, two or more plates or elements and one or more separators therefor, each consisting of a separate and independent pair ofstrips ofinsulating material. located, rcspectively, upon opposite sides of a plate and united at the upper ends, whereby said Separator may be remove'd and replaced without disturbing the elements.

ll. In a secondary battery, the combination of a plate or element and one or more separators therefor, each consisting of a separate and independent pair of strips of insulat'ing material united at one end, and one or more notches or seats fornied in said plates to receive said separators and prevent displacemeut thereof, substantially as described.

FRANK KING.

Vitnesses:

CHARLEs HENRY DENNis, H. DILL, Bothy of 4 Great llfnchestcr Street, E. O.

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