Improvements in Electrical Accumulators or Secondary Batteries.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Electrical Accumulators or Secondary Batteries.
I, OSKAR BEHREND, of 6, Eppsteiner Strasse, Frankfort-on-Main, in the
German Empire, Theatrical Illumination Inspector, do hereby declare the nature
of this invention to be as follows:-
This invention has for its object to provide an improved electrical accumu-
lator or secondary battery in which the active material is not liable to crumble
or fall off from the plates and the plates are not liable to become distorted,
while space is economized and weight lessened.
According to this invention the positive and negative electrodes are separated
by the material known as "Loofah," a plate of which is placed between each
two opposed plates until the whole forms one block of a size such as to allow of
its being slidden into the receptacle. The receptacle is then filled with dilute
sulphuric acid or other suitable electrolyte and under the action of the electro-
lyte the "Loofah " plates expand and firmly apply themselves to the plates. The
expansion of the Loofah "plates is still further increased by subjecting them
to pressure prior to their use.
An electric accumulator or secondary battery thus formed is of small weight
and has very little internal resistance and requires but a small quantity of
electrolyte, and, owing to the elements being arranged closely adjacent to each
other, it is of high capacity in proportion to the size of the receptacle employed,
for instance, in cases where under the usual construction five pairs of elements
would be used, in the arrangement according to my invention seven pairs of
elements can be easily employed. As "Loofah" has great absorbing capacity,
it is not necessary to charge the accumulator with (or with any large amount of)
unabsorbed electrolyte so that my electric accumulator or secondary battery is
very useful, for instance, for motors, or in other cases where there is liability to
concussion or vibrations. The sensitiveness to concussion and vibrations may
be further reduced by filling any spaces that may exist between the plates or
the plates and the receptacle with powdered glass.
11
1
T1000
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.
Improvements in Electrical Accumulators or Secondary Batteries.
I, OSKAR BEIIREND, of 6, Eppsteiner Strasse, Frankfort-on-Main, in the
German Empire, Theatrical Illumination Inspector, do hereby declare the nature
[Price Sd

page_text: of this invention and in what manner the same is to be performed to be par-
ticularly described and ascertained in and by the following statement:-
This invention has for its object to provide an improved electrical accumu-
lator or secondary battery in which the active material is not liable to crumble,
or fall off, from the plates, and the plates are not liable to become distorted,
while space is economized and weight lessened.
According to this invention the positive and negative electrodes are separated
by the material known as Loofah a plate of which is placed between each two
opposed electrode plates until the whole forms one block of a size such as to
allow of its being slidden into the receptacle. The receptacle is then filled
with dilute sulphuric acid or other suitable electrolyte and, under the action
of the electrolyte, the Loofah plates expand and firmly apply themselves to the
electrode plates. The expansion of the Loofah plates is increased by subjecting
them to pressure prior to their use.
An electric accumulator, or secondary battery, thus formed is of small weight
and has very little internal resistance and requires but a small quantity of
electrolyte and owing to the elements being arranged closely adjacent to each
other, it is of high capacity in proportion to the size of the receptacle employed
for instance in cases where, under the usual construction, five pairs of elements
would be used, in the arrangement according to my invention seven pairs of
elements can be easily employed as Loofah has great absorbing capacity, it is
not necessary to charge the accumulator with, (or with any large amount of)
unabsorbed electrolyte so that my electric accumulator or secondary battery, is
very useful, for instance, for motors, or in other cases where there is liability
to concussion or vibrations the sensitiveness to concussion and vibrations may
be further reduced by filling any spaces that may exist between the plates or
the plates and the receptacle with powdered glass.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:
1. An electric accumulator, or secondary battery, in which the electrodes are
separated from each other by plates of Loofah.
2. An accumulator or secondary battery, in which the electrodes are separated
from each other by Loofah subjected to pressure prior to its application.
3. An electric accumulator, or secondary battery, having the elements sepa-
rated from each other by Loofah and with the spaces between the plates and the
plates and the receptacle, filled up with powdered glass.
Dated this 7th day of March 1900
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.