Improvements in Secondary Batteries or Accumulators.
Year: 1893

page_text: France),
Date of Application (in United Kingdom), 6th June, 1893
Complete specification Left, 6th Mar., 1894-Accepted, 14th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Secondary Batteries or Accumulators.
I, ANTOINE EDOUARD PEYRUSSON of 7, Chemin du Petit Tour, Limoges,
(Haute Vienne) France Chemist, do hereby declare the nature of this invention to
be as follows:-
My invention consists in improvements in that class of secondary batteries or
accumulators which are constituted of thin metal plates or laminæ fixed in a rigid
frame, and it has more particularly for its objects to render such batteries more solid
and compact than hitherto as well as to increase their force.
The invention is illustrated in the accompanying drawings, forming part of this
Specification,
Figure 1 of which is a part sectional elevation, and Figure 2 a part sectional
plan of the positive electrode.
Figure 3 is a part sectional elevation, and Figure 4 a part sectional plan of the
negative electrode.
Figure 5 represents a positive electrode formed of horizontal discs.
Figure 6 is a plan of one of the discs.
Figure 7 is a perspective view of the accumulator.
The positive electrode a is constructed of a number of very thin lead strips or
lamina autogenously soldered to a central rode of pure or antimoniated lead.
The strips may be arranged vertically, as in Figure 1, in which case their ends are
soldered to discs d, e, of pure or antimoniated lead of a few millimetres in thickness,
each strip being thus secured at three of its edges and being free at its outer edge
only. The number of these strips should be considerable so as to themselves
constitute the positive electrode without the addition of a material such as litharge,
red lead, etc. In this manner the electrolyte is brought more intimately into
contact with the strips or lamina. The strips instead of being vertical may be
spirally arranged and more or less close together upon the central rod c.
The positive electrode may also be comprised of horizontal discs f, as shewn in
Figures 5 and 6, disposed at a very slight distance apart upon the central rod c to
which they are attached so as to form an integral portion thereof by autogenous
soldering. The thickness of the two end discs g, h, is somewhat greater than that
of the intermediate discs, so as to afford protection to the latter which are of very
thin metal. The discs are pierced with holes i, as shewn in the plan Figure 6, to
permit of the circulation of the liquid.
It will be observed that in either case the positive electrode is of cylindrical
form. The ends of the positive electrode are enclosed by caps or covers k, l, of
glass, porcelain, gutta-percha, or other insulating material, of slightly larger diameter
than that of the cylinder constituting the positive electrode. These caps or covers
bear against the negative electrode and thus prevent all possibility of contact
between the two electrodes.

page_text: The negative electrode is constituted by lead plates m corrugated as shewn in
Figures 3 and 4. According to my invention the lead plates m are coiled in the
form of a hollow cylinder and each corrugation or fold is slit for a portion of its
length, in order that both faces of the negative electrode may be rendered active
and the yield increased. The ends of the plates m are inserted in and intimately
soldered to top and bottom rings n, o, of pure or antimoniated lead. The parts are
thus rigidly secured together, this result being further ensured by the employment
of a number of sufficiently-strong vertical strips p, which serve to unite the
corrugated plates in to which they are autogenously soldered. The strips p are
also soldered to the rings n, o, and one of them is continued upwards to form the
contact piece q. The negative electrode in this manner constitutes a hollow cylinder
in which the cylindrical positive electrode is received with an intervening space of
about two-fifths of an inch, all contact between the two electrodes being prevented
by the employment of insulating caps or covers k, l, as before explained. The two
electrodes are plunged in a sulphuric acid solution at 25° B. contained in a suitable
vessel r.
By constructing the electrodes in the above manner of very thin lead strips or
laminæ held in frames of pure or antimoniated lead, accumulators possessing large
area combined with great strength may be constructed.
Instead of employing brass binding screws, the contacts may be formed of cups
containing mercury mounted upon the negative electrode, as shewn in Figures 3
and 7, in which a rod of pure or antimoniated lead carried upon the positive
electrode dips.
The invention is not limited to lead accumulators but may be adapted to others,
for example those in which alkalies are employed, the lead plates being in this case
replaced by plates of copper or other metal unattackable by the alkalies.
Dated this 6th day of June 1893,
A. E. PEYRUSSON,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Secondary Batteries or Accumulators.
I, ANTOINE EDOUARD PEYRUSSON, of 7, Chemin du Petit Tour, Limoges,
(Haute Vienne) France, Chemist, 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 consists in improvements in that class of secondary batteries or
accumulators which are constituted of thin metal plates or laminæ, fixed in a rigid
frame, and it has more particularly for its objects to render such batteries more
solid and compact than hitherto, as well as to increase their capacity.
The invention is illustrated in the drawings accompanying my Provisional
Specification,
Figure 1 of which is a part sectional elevation, and Figure 2 a part sectional plan,
of the positive electrode."
Figure 3 is a part sectional elevation, and Figure 4 a part sectional plan, of the
negative electrode.
Figure 5 represents a positive electrode, formed of horizontal discs.
Figure 6 is a plan of one of the discs.
Figure 7 is a perspective view of the accumulator.
The positive electrode a is constructed of a number of very thin lead strips
or lamina bautogenously soldered to a central rode of pure antimoniated lead.
The strips may be arranged vertically, as in Figure 1, in which case their endo

page_text: are soldered to discs d, e, of pure or antimoniated lead of a few millimetres in
thickness; each strip being thus secured at three of its edges and being free at
its outer edge only. The number of these strips should be considerable so as to
themselves constitute the positive electrode without the addition of a material such
as litharge, red lead, etc. In this manner the electrolyte is brought more
intimately into contact with the strips or laminæ. The strips instead of being
vertical may be spirally arranged and more or less close together upon the central
rod c.
The positive electrode may also be composed of horizontal discs f, as shown in
Figures 5 and 6, disposed at a very slight distance apart upon the central rod c to
which they are attached so as to form an integral portion thereof by autogenous
soldering. The thickness of the two end discs g h is somewhat greater than that of
the intermediate discs, so as to afford protection to the latter, which are of very
thin metal. The discs fare pierced with holes i, as shown in the plan Figure 6,
to permit of the circulation of the liquid.
It will be observed that in either case the positive electrode is of cylindrical
form. The ends of the positive electrode are enclosed by caps or covers kl of
glass, porcelain, gutta-percha, or other insulating material, of slightly larger
diameter than that of the cylinder constituting the positive electrode, so that the
caps or covers will bear against the negative electrode and thus prevent all possibility
of contact between the two electrodes.
The negative electrode is constituted by lead plates m corrugated as shown
in Figures 3 and 4. According to my invention the lead plates m are coiled
in the form of a hollow cylinder and each corrugation or fold is slit for a portion
of its length, in order that both faces of the negative electrode may be rendered
active and the capacity increased. The ends of the plates m are inserted in and
intimately soldered to top and bottom rings n, o, of pure or antimoniated lead.
The parts are thus rigidly secured together, this result being further ensured by
the employment of a number of sufficiently strong vertical strips p, which
serve to unite the corrugated plates m to which they are autogenously soldered.
The strips p are also soldered to the rings n, o, and one of them is continued
upwards to form a conducting tang g. The negative electrode in this manner
constitutes a hollow cylinder in which the cylindrical positive electrode is received
with an intervening space of about two fifths of an inch, all contact between the
two electrodes being prevented by the employment of insulating caps or covers k, l,
as before explained. The two electrodes are plunged in a sulphuric acid solution
at 25° B. contained in a suitable vessel r. The accumulator is formed by reversing
the direction of the charging currents, as for a Planté cell.
By constructing the electrodes in the above manner of very thin lead strips or
laminæ held in frames of pure or antimoniated lead, accumulators possessing large
area combined with great strength may be constructed.
Instead of employing brass terminals, the contacts may be formed by a cup s
containing mercury, mounted upon the tang y of the negative electrode, as shewn
in Figures 3 and 7, in which dips the tang c of the positive electrode of the
adjacent cell.
The invention is not limited to lead accumulators, but may be adapted to others,
for example those in which alkalies are employed, the lead plates being in this
case replaced by plates of copper or other metal unattackable by the alkalies.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1. In an accumulator whereof the positive electrode is constructed of vertical
horizontal or other metallic laminæ soldered to a central metallic core, the
application of end discs of lead retaining said lamine in combination with capping
discs of insulating material adapted to prevent all contact between the two electrodes,
as specified.

page_text: 2. In an accumulator, the positive electrode constructed of thin metallic
perforated dises threaded on and soldered to a central metallic core, as specified.
3. In an accumulator, the negative electrode constructed of longitudinally
corrugated metallic plates rolled in the form of a hollow cylinder, each ply being
slitted for a portion of its length, the said plates being inserted in and soldered to
end rings of pure or antimoniated lead, as specified.
4. In an accumulator, the combination of a positive electrode of lamellar
construction and provided with end discs of lead and capping discs of insulating
material, as specified in Claim 1, with a negative electrode constructed, of
corrugated slitted plates rolled to cylindrical form and soldered to end rings, as
specified.
Dated this 6th day of March 1894.
A. E. PEI RUSSON,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.