Improvements in Electrode Plates for Secondary Batteries.
Year: 1893

page_text: Date of Application, 19th Dec., 1893
Complete Specification Left, 15th Sept., 1894-Accepted, 20th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in Electrode Plates for Secondary Batteries.
I, Dr. ARTHUR LEHMANN of 65 Blumenstrasse, Berlin, Germany, Engineer,
do hereby declare the nature of this invention to be as follows :---
This invention relates to accumulator plates for secondary batteries and it has
for its object to so construct them that they will have a much larger surface and
therefore greater capacity than heretofore, and, owing to the special structure of
the plates, the active substance will not be liable to fall out of position.
The frame of the electrode is, preferably, square or oblong in shape and is made
of lead. It may have lugs on it and also a central cross bar to give it greater
rigidity. The plate or grating which is inserted in the frame is so made or corru-
gated that it forms a double series of horizontal or nearly horizontal channels or
gutters one series on the one side and the other series on the other side. The active
substance is placed in these channel shaped receptacles.
A number of holes is made in each channel or gutter, throughout its length, and
these holes are tapered, the taper being preferably from the inside towards the
outside. These holes enable the substance to effectively act on both sides of the
plate, and, as the holes narrow towards the outside, they prevent the substance
from dropping or falling out of position. The substance, in fact, fills up the holes
and forms a kind of plug or stopper for each.
The gutters or channels are so made or arranged, one above the other, that
should any of the substance, from any cause, drop through the holes of one
gutter it falls down into the one next below it. As a consequence there is no
chance of the substance, if it falls, disarranging the electrode element which often
happens with the ordinary plates.
The plates can be made of any size and with any desired number of gutters or
channels. The gutters can be at any suitable distance apart.
Dated this 18th day of December 1893
H. D. FITZPATRICK,
70, Wellington Street, Glasgow, Agent.
COMPLETE SPECIFICATION.
Improvements in Electrode Plates for Secondary Batteries.
I, Dr. ARTHUR LEHMANN, of 65 Blumenstrasse, Berlin, Germany, Engineer,
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:-
This invention relates to accumulator plates for secondary batteries and it has for
its object to so construct them that they will have a much larger surface and there-
fore greater capacity than heretofore, and, owing to the special construction of the
plates, the active substance will not be liable to fall out of position.
And in order that my said invention may be properly understood I have here-
unto appended an explanatory sheet of drawings, whereon,
Fig. 1 is a front view of the accumulator plate.
Fig. 2 is a vertical section on the line "—" Fig. 1.

page_text: Referring to the drawings:-
The frame of the electrode is, preferably, square or oblong in shape and is made
of lead. It may have lugs on it and also central cross bar g to give it greater
rigidity. The plate or grating a which is inserted in the frame is so made or corru-
gated that it forms a double series of horizontal or nearly horizontal channels or
gutters one series on one side and the other series on the other side (see Fig. 2).
The active substance 6 is placed in these channel shaped receptacles.
A number of holes c is made in each channel or gutter throughout its length,
and these holes are tapered the taper being preferably from the inside towards the
outside. These holes enable the substance 6 to effectually act on both sides of the
plate, and, as the holes narrow towards the outside, they prevent the substance from
falling or dropping out of position. The substance in fact, fills up the holes and
forms a kind of plug or stopper d for each.
The gutters or channels are so made or arranged, one above the other, that should
any of the substance, from any cause, drop through the holes of one gutter it falls
down into the one next below it. As a consequence there is no chance of the
substance, if it falls, disarranging the electrode element which often happens with
the ordinary plates.
The plates can be made of any size and with any desired number of gutters or
channels. The gutters can be at any suitable distance apart.
-
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 consider
novel and desire to claim is :—
An electrode plate made substantially as hereinbefore described with reference
to the drawings annexed.
Dated this 25th day of August 1894.