Improvements in Secondary Battery Plates.
Year: 1895

page_text: Date of Application, 19th Oct., 1895
Complete Specification Left, 19th Aug., 1896-Accepted, 19th Sept, 1896
PROVISIONAL SPECIFICATION.
Improvements in Secondary Battery Plates.
I, ALEXANDER SCHLANSCHIEFF of Clifton Villa, The Avenue, Upper Noi wood,
Electrical Engineer, do hereby declare the nature of this invention to be as
follows-
and
or
This plate consists of a thin flat body having in one piece with it, and on both
sides ridges o1 tbs or their equivalent, forming support ts additional conducting
sui faces for the active material. The ribs may be of various sections; for instance
larger outside than near the plate, so as to key in the active material I sometimes
make the plates with bars outside and at an angle to the ribs, forming one piece with
the ribs and body; o flush with the outside surfaces of the ribs, but not touching
the body of the plate except through the ribs
The grid structure on the flat body of my plate extends to within a short distance
of the edges of the body which is left plain.
When I do not use the plate thus formed as an intermediate plate between
individual cells, or in other words where the plates are the external or end plates in
a series, I may omit the grid formation on one side
Plates of this furm are specially adapted for forming part of the electric
accumulators described in my Patent Specification No. 12045
I could of course make my plates other than flat, for instance cncular.
Dated the 10th day of Antalier 1905
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.
1, ALEXANDER SCHANSCHIEFF, of Clifton Villa, The Avenue, Upper Norwood,
Electrical Engineer do hereby declare the nature of this invention and in what
manner the saine is to be performed to be particularly described and ascertained
in and by the following statement :-
or
This plate consists of a thin flat body having in one piece with it and generally
on both sides dges or ribs or their equivalent forming support and additional
coi ducting surfaces for the active material. The ribs may be of various sections,
for instance large outside than near the plate so as to key in the active material.
1 sometimes make the plates with bars outside to the ribs and at right angle or at
another angle to the ribs forming one piece with the bs and body, or Hush with
the outside su fares of the ribs with spree between such bats and the body of the
plate.
The gid structure on the flat body of my plate extends to within a short
distance of the edges of the plate which thus in such other portions is left
plain.
The end plates in a series or assemblage of such plates are by preference made

page_text: with ubs or grid formation on the inner side only and without ribs on the side next
to the inside of the box.
Plates of this form are specially adapted for forming part of the electrical
accumulator described in the Specification of my Patent No. 12045 of 1894.
Fig. 1 of the accompanying drawings is a side view and Fig. 2 a plan of a
plate A having vertical ribs "A' and a horizontal bottom rib Åª The active
material B is put into the spaces between the ribs The ribs o grid structure
extend to within a short distance of the edges of the plate, so that plain spaces are
formed at the sides, at the bottom, and if desued and as here shown at the top.
No active material is put on in these spaces.
Figure 3 is a side view of a plate, and Figure 4 15 au end view. The plate A
has on each side two vertical bs A¹ near the side edges, and a bottom 11b A
uniting the ribs A¹. A³ are slanting ribs which impart additional stiffness to the
plate. These 11bs are provided on both sides of each plate and contain there
positive and negative material respectively except as regards the end plates which
have ribs on the inner side only, while the side next to the box is plain
Fig. 5 is a side view, and Fig 6 a plan of a plate with horizontal ribs A and bais A*
on the outside of same and at night angles thereto (or it may be at other angles.
The bars are shewn flush with the outside surfaces of the bs. The active material
is contained within the cage thus formed.
Other suitable arrangements of ribs than those shewn and described may be
applied to the middle portion of the plate, leaving plain parts along the sides and
bottom.
Plates of the construction here before described have the important advantage
that while the main body A, serves as a separating medium between two adjoining
cells, in the same manner as described in my Patent Specification 12045 of 1894
the plain parts along the sido edges and the bottom edges form between plate and
plate reservoirs of electrolyte, and the parts along the bottom edge when suitably
insulated prevent short circuiting of the cells in case of accidental fall of active
material.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what mauner the same is to be performed, I declare that what I
claim is
-
1. An accumulator battery plate consisting of a thin flat body provided on both
sides (or on one side only) with ribs ridges or grid structures which extend to
within a short distance of the side edges and the bottom edge and serve to receive
the active material so that the flat body forms the separating mediuin between two
adjoining cells and the plain parts of the flat body form between plate and plate
of the same cell reservoirs of electrolyte and when insulated prevent short circuiting
In case of accidental fall of active material, substantially as set forth."
2. The constructions of plate, shewn and described.
Dated this 19th do of Aumunt 1902
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.