Improvements in the Construction of Cells for Electrio Accumulators.
Year: 1896

page_text: Date of Application, 24th Apr., 1896-Accepted, 30th May, 1896
COMPLETE SPECIFICATION.
Improvements in the Construction of Cells for Electrio
Accumulators.
I, FRIEDRICH WILHELM SOHNEIDER, Engineer, of Triberg in the Grand
Duchy of Baden, Empire of Germany, 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 :-
The object of the present invention is principally intended for accumulators for
use in vehicles, but is also suitable for stationary batteries.
By the new construction of cells represented in the annexed drawing, the
electrodes are completely insulated from one another and from the cell: shook and
disturbance during working are prevented and the inconveniences produced by the
development of gas are avoided.
The new construction is as follows:-In the bottom of the wooden case g lined
with lead, celluloid or other acid resisting material is arranged a serrated plate a
of soft rubber, upon which lies, one on the left and one on the right, a bar h of
hard rubber. Upon the three-sided prismatic part of the bars rest directly the
negative electrodes n whilst the horizontal part of the bars h provided with a
groove forms & support for the hard rubber supports, which carry the positive
electrodes p provided with the noses e arranged above the middle. Also on the
negative electrodes n are provided lateral noses f, and between these and the
noses of the positive electrodes p is a serrated bar 6 of soft rubber which,
stiffened by a hard rubber tube r, forms an insulation between the electrodes and
the side walls of the case 9 and serves simultaneously to receive and neutralize
lateral shock. In order to insulate the electrodes one from the other, there is
arranged between each two plates an insulating plate which consists of a
perforated plate of celluloid or other acid-resisting and insulating material
stiffened by a hard rubber frame.
The case g of the accumulator is closed by a cover d of soft rubber, which is
stretched over the vessel with its thickened edge to stiffened by a wire z. For the
passage of the circuit conducting pins o of the electrodes n and p the cover d is
provided with convenient openings. Also a bent tube m is passed through the
cover din order to allow the gases developed in the element to escape freely.
These gases may, for instance, be conducted in vehicle accumulators to the outer
air by means of rubber pipes passed over the tubes m, in order that the gases
may offer no inconvenience in the interior of the vehicle. The cover d of soft
rubber has the essential advantage over other covers that it may be taken off
easily and replaced in the same manner as is necessary for the controlling of the
element.
It may be further stated that the positive electrodes p can be put also directly
upon the bars h in the same manner as the negative electrodes n.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The construction of accumulator cells having the electrodes n, p, resting
upon bars of an insulating material and insulated one from the other by per-
forated insulating walls t, and by the elastic and insulating interposed pieces a, b,
which, lying between the walls of the vessel and the electrodes, receive and
neutralize shocks in transport.

page_text: 2. In the construction of cell, as described in Claim 1, the closing cover d made
of elastic material and provided with an enlarged border to and the tube m for
conducting away the gases developed in the element.
Dated this 24th day of April 1896.
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, W.C., Agents for Applicant.