Improvements in Electrodes and Cells for Secondary Batteries or Accumulators.
Year: 1893

page_text: Date of Application, 29th Nov., 1893
. Complete Specification Left, 10th Mar., 1894-Accepted, 21st Apr., 1804
PROVISIONAL SPECIFICATION.
Improvements in Electrodes and Cells for Secondary Batteries or
Accumulators.
I EDWARD HENRY WHEELER of Walton Road, East Molesey in the County
of Surrey, Electrical Engineer do hereby declare the nature of this invention to
be as follows:-
And consists of a grooved cell combined with a hollow plate or grid which is
calculated to be better and more durable than secondary batteries or accumulators
heretofore employed. The plate is hollow and made of lead, or an alloy of lead,
and may be either cast or stamped in two separate parts and afterwards joined
together as shewn in the accompanying drawing and being held in their respective
positions by grooves manufactured in the cells to suit their sizes, and being made of
non-conductive material.
The plan of cell is shewn in the accompanying drawings, Fig. 1 A B being plan
of a five plate cell; Fig. 2 represents sectional elevation of cell, the dotted lines
shewing the position of plate in cell.
The plate as shewn by Fig. 3 C. D. represents inside face of rebated plate.
Fig. 5 C. D. represents section of rebated plate.
Fig. 4. E. F. represents outside face of flat plate, and Fig. 6 E. F. represents
section of flat plate which said parts are either soldered or burnt together on the
inside rim of rebated plate Fig. 3 C. D. and outside edge of flat plate Fig. 4 E. F.
the centre being rivetted together by the four raised pins as shewn in Fig. 3 C. D
leaving a clear space in the centre for material designed to become active and
which material is pressed into the plates after the plates have been riveted and
soldered together and the said material becoming one body as represented in
Figure 7. part enlarged section of plates when riveted and soldered together part
shewing paste or active material in position.
Dated this 28th day of November 1893.
COMPLETE SPECIFICATION.
Improvements in Electrodes and Cells for Secondary Batteries or
Accumulators.
I, EDWARD HENRY WHEELER, of Walton Road, East Molesey, in the County
of Surrey, 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 :-
My invention relates to electrodes and cells for secondary batteries or
accumulators.
According to my invention I construct improved electrodes each electrode
consisting of two grids or perforated plates made of lead or lead alloy between
which grids the active material is held in position.
I moreover provide improved cells or jars for holding the several electrodes to
form a battery, said cells or jars being constructed to maintain a suitable distance
between the plates.

page_text: The active material in my improved electrodes is supported by two separate
grids cast or stamped with longitudinal and transverse bars of wedge shaped section,
one of the grids of each pair has a rebated edge forming a frame in which the
other grid fits. When so fitted together the bars of the grids are separated by a
suitable distance and the thin ends of the wedge shaped sections face each other.
The active material or substance from which it is to be formed is contained in the
space between the grids and in the interstices thereof being held in position by the
wedge shaped bars above mentioned.
My improved battery jars are constructed with grooves in their sides in which
grooves the electrodes are placed. The portions of the walls of the jar between
the said grooves act as separators to keep the electrodes at the proper distance
apart. The said grooves preferably do not extend to the bottom of the jar
thereby forming a ledge on which the electrodes are supported the bottoms of the
said electrodes being at a distance from the bottom of the cell.
In order that my invention may be more clearly understood I have shewn in the
drawings left with my Provisional Specification a method of carrying it into
practice.
In the said drawings
Figure 1 is a plan view, and
Figure 2 is a section of one of my improved jars, the dotted lines in Figure 2
shewing the position occupied by one of the electrodes when placed therein.
Figure 3 is a front view shewing the inner face of the rebated grid, and
Figure 4 is a similar view shewing the outer face of the plain grid.
Figure 5 is a section on the line C D Figure 3, and
Figure 6 is a section on the line E F, Figure 4.
Figure 7 is a portion of a sectional view of a partly completed electrode.
Referring now to Figures 1 and 2. The sides A, B of the jar are furnished with
grooves for containing the plates, which grooves in this particular design stop at a
considerable distance from the bottom of the jar forming ledges in which rest
shoulders formed on the sides of the electrode as shewn in Figures 3 and 4.
The grids for the electrodes are formed of longitudinal and transverse bars as
shewn in Figures 3 and 4 said bars being wedge-shaped in section as clearly seen
in Figures 5, 6 and 7. One of the grids, shewn in Figures 3 and 5 has a rebate
extending round forming a frame in which the other plate shewn in Figures 4 and 6
fits, the two grids being burnt or otherwise secured together at the joint inside the
rim of the rebated grid. I form projections on one of the grids which pass through
suitable orifices in the other grid and are riveted over or otherwise secured. Four
of these projections or rivets are shewn towards the central parts of the figures.
The space between the grids and the interstices thereof is filled with material
which is formed into active material. Said material is pressed into place either
before or after the two grids are secured together.
The electrodes shewn in the drawing are somewhat tapered in form and have
shoulders formed at the sides but it will be understood that said electrodes may be
made of any suitable shape the grooves in the cell walls being made to correspond.
The battery jar or cell is of course made of nonconducting material.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1. A battery jar having grooves in its sides for receiving the electrodes, said
electrodes being separated by the portions of the jar intermediate between the
grooves, substantially as described.
2. For a secondary battery, an electrode constructed of two separate grids of
lead or lead alloy secured together and having the active material placed between
them.
3. For a secondary battery, an electrode constructed of two separate grids of
lead or lead alloy having the active material between them, one of the said grids

page_text: being formed with a rebated edge inside which the other grid fits, for the purpose-
specified.
4. For a secondary battery, an electrode constructed substantially as described
with reference to the drawings for the purpose specified.
Dated this 10th day of March 1894.
E. H. WHEELER.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant..