Year: 1887

page_text: Date of Application, 17th May, 1887
Complete Left, 17th Mar., 1888
Complete Accepted, 11th May, 1888
1, WILLIAM HOPKIN AKESTER, of No. 41, Reporton Road, Walham Green,
Middlesex, Electrician, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in the construction of secondary batteries
whereby a large active surface is arranged in a small space and with comparatively
little weight.
A number of frames are arranged in a case of any suitable material, such as, wood,
vulcanite or glass. The said frames are formed of lead and have arranged therein a
number of bars or plates of lead which extend in a position parallel to, and a short
distance from, each other, from side to side, small pieces of fead are, by preference,
placed between the ends of the said bars or plates, for the purpose of keeping the required
distance between the bars or plates, and the said pieces of lead are of such thickness
as to allow of the insertion between each pair of bars or plates of an intermediate layer
of horse hair cloth which has been treated by a solution of nitro-cellulose in acetate of
amyl, or, instead of employing horse hair cloth, I sometimes substitute therefor any
suitable material which is not acted on by the acid or by the electrolytic action of the
cell.
Two lugs of lead of a truncated conical shape, are formed at the top of each
frame and pass into holes at the top of the case, the surfaces of which holes correspond
in shape with the sides of the said lugs, so that by screwing the necessary
ry terminals on
to a pin projecting beyond the top of the case from one of the lugs, and a nut or ring
on to a pin projecting in a similar manner from the second lug, the plate is closely and
firmly secured to the top of the case.
The distance pieces, hereinbefore referred to, and frame are burnt together.
VAUGHAN & SON,
Agents for the Applicant.

page_text: I, WILLIAM HOPKIN AKESTER, of No. 37, Bishop's Terrace, Fulham, in the County
of Middlesex, Electrician, 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 said invention relates to improvements in the construction of secondary
batteries whereby a large active surface is arranged in a small space and with
comparatively little weight.
A number of frames are arranged in a case of any suitable material, such as, wood,
vulcanite or glass. The said frames are formed of lead and have arranged therein a
number of bars or plates of lead which extend in a position parallel to, and a short
distance from, each other, from side to side, small pieces of lead are, by preference,
placed between the ends of the said bars or plates for the purpose of keeping the
required distance between them, and the said pieces of lead are of such thickness as
to allow of the insertion between each pair of bars or plates of an intermediate layer
of horse hair cloth which has been treated by a solution of nitro-cellulose in acetate of
amyl, or, instead of employing horse hair cloth, I sometimes substitute therefor any
suitable material which is not acted on by the acid or by the electrolytic action of
the cell.
Two lugs of lead of a truncated conical shape, are formed at the top of each frame
and pass into holes at the top of the case the surfaces of which holes correspond in
shape with the sides of the said lugs, so that by screwing the necessary terminals on
to a pin projecting beyond the top of the case from one of the lugs and a nut or ring
on to a pin projecting in a similar manner from the second lug, the plate is closely
and firmly secured to the top of the case.
The sides of the frame, the ends of the bars or plates and also the distance pieces,
when used, are burnt or fused together.
The electrodes constructed as hereinbefore described are placed within cases which
are supplied with an acid solution in the ordinary manner.
I will now proceed to refer to the accompanying drawing which represents a
vertical-cross section of a case and a side view of one of the electrodes arranged within
the same.
A. is the case, b. the lead frame of the electrode, and c. the lead cross bars
or plates, the ends of which are shown separated by the distance piece d. e. is an air
hole and are the lugs of lead at the top of the frame, which lugs, as hereinbefore
stated, pass through holes in the top of the case thereby allowing the frame to be
secured in its position within the latter, as above described.

page_text: 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 :-
In secondary batteries the employment of a frame containing cross bars or plates
(and sometimes distance pieces), such frame and bars or plates, and also the distance
pieces, when employed, being formed of lead and burnt or fused together, suitable
layers of horse hair or other material being interposed between the bars or plates and
between the sides of the frame and the nearest bars or plates, substantially as herein-
before described.
VAUGHAN & SON,
Agents for the Applicant.