Improvements in Electrical Accumulators.
Year: 1892

page_text: Date of Application, 27th Feb., 1892-Accepted, 18th June, 1892
COMPLETE
SPECIFICATION.
Improvements in Electrical Accumulators.
I, KARL KAHABKA, of Kladno, Bohemia, in the Empire of Austria, Manu-
facturer, 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 a new or improved construction of electrical accumulator
whereby a higher degree of tension than heretofore can be obtained.
In the accompanying drawing
COMPLETE
SPECIFICATION.
Improvements in Electrical Accumulators.
I, KARL KAHABKA, of Kladno, Bohemia, in the Empire of Austria, Manu-
facturer, 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 a new or improved construction of electrical accumulator
whereby a higher degree of tension than heretofore can be obtained.
In the accompanying drawing
Figure 1 is a longitudinal section of an accumulator provided with my improve-
ments.
Figure 2 is a transverse section of the same and
Figure 3 is a plan.
Figure 4 shews in elevation and section one of the plates detached.
The accumulator shewn in the drawing comprises a wooden box A which is lined
internally with sheet lead, and contains a series of lead cells K each provided with
plates p. p.
The cells K. K are supported within the box A on insulators J. J. and
the plates p. p. are supported in the cells K upon insulators i, as shewn in Figure 2,
where the insulators are represented of prismatic form.
In order to retain the cells at uniform distances from one another insulating
pieces J provided with projecting ribs are employed, and the plates p. p. are
similarly held in proper position by insulating pieces i¹.
As shewn in Figure 3 all the positive plates (indicated by the sign +) are con
nected to a collecting bar S', and the negative plates (indicated by the sign -) are
connected by a collecting bar S.
The plates p. p. as shewn in Figure 4 have formed in them recesses i, i. filled with
material suitable for accumulators (oxide of lead and litharge).
On each plate is an extension intended to form a connection between the
plate and the collecting bar S or S¹.
In the drawing the cells K are represented as of rectangular form but they may
be made round or of any other suitable shape.
The sides a. a' of the cells K, Figure 3, are provided with recesses similar
to those in the plates p. p., which recesses are also filled in with a material such as
oxide of lead and litharge.
When the accumulator hereinbefore described is in operation the large outer
box A and the cells K are filled with diluted acid, but care must be taken that the
acid in the box A. does not come into contact with the acid in the cells K, that is
to say with the lead plates therein and the level of the acid in the said box A
should be from 4 to 5 m below the top of the lead cells K.
The construction herein before described can be modified in so far that the lead
cells K can be placed one in the other to form the accumulator. The tension of
the current is raised about say 4 to 5 volts for each extra cell. It is not advan-
tageous to build a single accumulator in the latter form as the box A requires to be
much higher and a single accumulator of 20 volts is heavier than two accumulators
of 10 volts each which are connected side by side.
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 1
claim is :-
:-
An accumulator having a number of lead cells K insulated one from another
and from the lead lined box A in which they are placed, the said cells K having
within them lead plates p, provided with recesses for retaining the active material

page_text: and being insulated one from another and from the walls of the cells K which walls
have formed in them recesses similar to those in the plates p, substantially as
herein before described and illustrated in the accompanying drawing.
Dated the 27th day of February 1892.
G. F. REDFERN & Co.;
4, South Street, Finsbury; London, Agents for the Applicant.

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