Improvements in Secondary Voltaic Batteries.
Year: 1890

page_text: Date of Application, 15th Mar., 1890
Complete Specification Left, 7th May, 1890-Accepted, 7th June, 1890
PROVISIONAL SPECIFICATION.
Improvements in Secondary Voltaic Batteries.
I, HENRY TYRER CHESWRIGHT of Carcassonne, Departinent of Aude, France,
Manufacturer do hereby declare the nature of this invention to be as follows:-
My invention relates to the construction and connection of the electrode plates
of secondary voltaic batteries, which I effect in the following manner.
I force lead or alloy through a die as in the ordinary manufacture of lead pipes,
but this die is so formed that the pipe is made with a number of longitudinal ribs or
flanges projecting from its circumference, the spaces between these ribs forming
grooves which may be of various shapes and dimensions. I cut the pipe thus formed
into suitable lengths and 1 pile these lengths one above another in a frame which may
be of lead or alloy. The ends of each length of pipe may be flattened so as to enter
grooves in the frame. I charge the grooves which the pipes present on each side
and between each pipe and the next with lead oxide, thus forming an electrode plate
for a secondary battery, a number of which plates I place in a suitable cell. For the
purpose of connecting together all the positive plates of the cell, and also connecting
all the negative plates, I make each of the frames with a bracket projecting upwards
and outwards from its upper bar. The outer end of this bracket presents a notch or
gab like a U inverted, which engages on a longitudinal bolt extending the length of
the cell. On the bolt are strung a number of lengths of pipe of lead or alloy, each
length serving as a distance piece between one positive plate and the next, and by
screwing a nut on the end, or on each end of the bolt, 1 tighten up all these distance
pieces against the plates, making good conducting contact. In a similar manner the
negative plates of the cell are connected, their brackets extending on the other side of
the cell. When it is desired to remove or replace a plate, it is only necessary to
partly unscrew the nut or nuts on the bolt leaving a plate free to be lifted out, or
allowing a plate to be introduced between two of the distance pieces.
Dated this 15th day of March 1890.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Secondary Voltaic Batteries.
1, HENRY TYRER CHESWRIGHT of Carcassonne, Department of Aude, France,
Manufacturer, 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 the construction and connection of the electrode plates of
secondary voltaic batteries which I effect as I shall describe referring to the
accompanying drawings. I force lead or alloy through a die as in the ordinary
manufacture of lead pipes, but this die is so formed that the pipe is made with a
number of ribs or flanges projecting from its circumference, the spaces between these
ribs forming grooves which may be of various shapes and dimensions. Fig. 1 of the
accompanying drawings is a transverse section shewing three such ribbed pipes P
superposed.
Instead of round pipes the pipes may be of other forms, such for instance as those
of which two are shewn superposed in Fig. 1, and these may have internal stiffening
ribs as indicated at p. By preference the outwardly projecting ribs are made of
dovetail form or somewhat undercut so as to retain more firmly the lead oxide with
which the recesses between the ribs are charged. By thus making up a battery plate

page_text: of ribbed pipes I obtain great stiffness with comparatively little weight of metal. I
ent the pipe thus formed into suitable lengths and pile these lengths above one
another in a frame, A. which may be of lead or alloy, as shown in front view by
Fig. 2 and in sectional plan by Fig. 3. The ends of each length of pipe may be
flattened so as to enter grooves in the frame A or instead of flattening the ends of the
pipes, they may have inserted in them plugs of lead or alloy projecting into the grooves
of the frame.
P
The
The sides of the frame A may, as shewn in Figs. 3 and 3 be made tubular with .
projecting dovetail rib a extending their whole length. In this case the ends of the
pipes require only to have dovetail notches cut in them to fit on the rib a.
upper and lower sides of the frame instead of being cast in the same piece with the
vertical sides may consist each of a length of the ribbed pipe with a bolt of lead or
alloy passing through it and securing the vertical sides to it by nuts. I charge the
grooves which the pipes present on each side and between each pipe and the next with
lead oxide, thus forming an electrode plate for a secondary battery, a number of which
plates I place in a suitable cell. For the purpose of connecting together all the
positive plates of the cell and also connecting all the negative plates, I make each of
the frames A with a bracket B projecting upwards and outwards from its upper bar.
The outer end of this bracket presents a notch or gab like a U inverted, which
engages on a longitudinal bolt extending the length of the cell. On this bolt C
are strung a number of lengths D of lead or alloy pipe, each length serving as a
distance piece between one positive plate and the next, and by screwing the nut on
the end or on each end of the bolt C. I tighten up all these distance pieces against
the plates, making good conducting contact. In a similar manner the negative plates
of the cell are connected, their brackets extending on the other side of the cell. When
it is desired to remove or replace a plate, it is only necessary to partly unscrew the
nut or nuts on the bolt, leaving a plate free to be lifted out, or allowing a plate to be
introduced between two of the distance pieces.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim
is :-
1. An electrode plate for a secondary battery consisting of a number of lengths
of ribbed pipes of lead or alloy held in a suitable frame and having the intervals
between their ribs charged with lead oxide substantially as described.
2. For connecting the electrode plates of a secondary battery, the combination of
gabs in brackets projecting from them with longitudinal bolts on which are strung
lengths of pipe as distance pieces between the plates, substantially as and for the
purpose set forth.
Dated this 6th day of Mar 1800.
ABEL & IMRAY,
Agents for the Applicant.