Improvements in Secondary Battery Plates.
Year: 1889

page_text: Date of Application, 12th Feb., 1889.
Complete Specification Left, 12th Nov., 1889-Accepted, 12th Feb., 1890
PROVISIONAL SPECIFICATION.
[Communicated from abroad by THE GIBSON ELECTRIC COMPANY OF EUROPE, of
35, Boulevard des Capucines, Paris, France.]
Improvements in Secondary Battery Plates.
I, WILLIAM LLOYD WISE, of No. 46 Lincolns Inn Fields, in the County of
Middlesex, Consulting Engineer and Patent Agent do hereby declare the nature of
this invention to be as follows:-
This invention has for object the production of an improved plate or element for a
secondary battery.
A secondary battery plate, according to this invention, has a raised border, or rim,
the base of the said plate being pierced with holes, or perforations. The plate may be
made of rolled lead, or it may, if desired, be cast in a mould the base being pierced by
perforations that may be advantageously inclined to the surface of the plate. It is
advantageous that the holes, whether mechanically pierced or cast, should be so made
that the tool used in producing the perforations raises a lip at the upper side, and a
projection, or opening, on the lower surface of the plate. These plates, which from
their form may be called " saucer plates" are filled with the active material, or material
designed to become active, and the said material entering and filling the above
mentioned perforations, becomes firmly united with the plate. Several such plates are
arranged horizontally, alternately positive and negative, to form a cell. The horizontal
position of the plates prevents the active material from falling out, and so making a
short circuit between the plates, and destroying the battery.
In a modified form of plate loops are struck by suitable means from the bottom of
the plate (the plate having, as in the previous form, a rim or, border) and these loops
extend to the same height or thereabouts, as the top of the raised rim or border. The
active material is pressed into the plate and is held in position by the above mentioned
"loops." These loops may be struck from the top of the plate, if desired, or from the
top and bottom. Both these forms or constructions of plates have in the centre of
each side a hollow space, in order to allow the electrodes from the different plates to
pass to the top; the hollow space economises room and allows of the containing vessel
being about the same size as the united plates:
The terminals constituting each set thus brought to the top of the cell are united
into one piece by fusion or lead soldering" and connected by ordinary means to one
terminal of the adjoining cell.
Dated this 19th day of Fahmi 1000
COMPLETE SPECIFICATION.
Improvements in Secondary Battery Plates.
A communication from abroad by THE GIBSON ELECTRIC COMPANY OF EUROPE, France.
1, WILLIAM LLOYD WISE of 46 Lincolns Inn Fields in the County of Middlesex,
Patent Agent, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
The invention relates to the construction of storage-batteries or accumulators; and
it consists in a novel form of supporting-plates or electrodes, designed to be of simple
construction, which shall reliably unite the plate and the active material together,
while perfectly exposing both to the action of the electrolytic fluid.
The invention consists in striking out from the surface of the sheet or plate of lead
which forms the electrode or in casting thereon raised loops which form continuous
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Duin 201

page_text: sections of the sheet or plate, and as the active material, when applied, extends under
these loops or raised sections it becomes thereby firmly united with the metallic plate.
The plate is preferably prepared with a raised rim about its edge of a height
approximately equal to the thickness of the active material to be applied, and the loops
are made of about the same height as the rim., It will be seen that when the loops
are struck out from the material of the plate, which may be done in a very simple and
inexpensive manner by proper tools, a hole is made through the body of the plate
under each loop. The loop may be curved in shape or rectangular, or of any desired
shape. When the active material is laid upon the plate, it forms a continuous body
extending under all the loops, and the upper portions of the loops, which are even
with the surface of the active material, form points of contact for the electrolytic fluid
throughout the entire surface of the plate.
In the accompanying drawings
Figure 1 is an elevation, and
Figures 2 and 3 are transverse sections of a battery-plate embodying the features
of the invention.
Referring to the Figures :-
A represents a sheet of metal, preferably lead. From its surface the loops D are
struck up to a height approximately equal to that of the rim B. These loops form
continuous sections of the metallic plate, and may be said to tie the active material to
the body of the plate. The loops are preferably made in alternating lines, and as some
of the end loops extend to the rim and become attached thereto they strengthen the
plate.
As shown in Figures 2 and 3, holes d are made in the plate by striking up the-
material of the loops, and the active material C extends through the holes and fills
them up.
The plate possesses great strength, is easily and cheaply made, the active material
may be applied in an expeditious and simple manner, and as the upper parts of the
loops extend even with the surface of the active material, as shown in Figure 1, the
metallic portions of the plate are brought into contact with the electrolytic fluid
throughout the whole surface of the plate.
While the loops shown in the drawings are curved in shape, it is plain that they
may be made rectangular or of any other desirable form.
Loops may be struck up from both sides of the plates, if desired.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to
me by my foreign correspondents, I declare that what I claim is :-
1. A storage-battery plate consisting of a sheet of metal having portions thereof
raised above its surface in the form of loops.
2. A storage-battery plate consisting of a sheet of metal having loops raised from
its surface and active material covering the surface of said plate and extending under
the loops.
3. The combination of the plate A, having the rim B, the loops D; and the active
material C, covering the plate and secured thereto by extending under said loops, as..
.described.
Dated this 11th day of October 1889.
1
W. LLOYD WISE.