Improvements in Electric Batteries.
Year: 1896

page_text: Date of Application, 12th May, 1896-Accepted, 27th Feb., 1897
COMPLETE
SPECIFICATION.
Improvements in Electric Batteries.
1 PAUL SCHMIDT, Mechanician, of 53 Rostocker Strasse, Berlin, N.W. in the
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:-
My invention relates to electric batteries, and comprises a cell in which the
inconveniences experienced with the dry cells heretofore used are obviated
inasmuch as it combines portability and weather proof property with good
conductivity, constancy, and durability.
According to my said invention I place a carbon cylinder in the annular space
between an outer and an inner zinc cylinder, the inner space of the carbon containing
an exciting liquid, whilst the annular space between the carbon cylinder and the
outer ziuc cylinder is filled with an exciting paste.
In the accompanying drawing my improved cell is represented.
The zinc cylinder z possesses an inner tube which also consists of zinc, and is in
electrical connection with it. Into the annular space thus formed, the bottom of
which is covered with layers p and a of paraffin, I place centrically a carbon
cylinder k which bears below upon a taper insulating ring i. At its top the tube r
is protected by a rubber ring from contact with the carbon cylinder. Prior to the
insertion of this carbon cylinder k the tuber is provided interiorly with a solution
of sal-ammoniac, and subsequently the annular space between the carbon cylinder k
and the outer zinc cylinder z is filled up with a paste after the lowest part has
received a layer of paraffin. By turning over the cell and placing it upright the
solution of sal-ammoniac is transferred from the tuber to the annular space
the cell by the gradual
between this tuber and the carbon cylinder k thus revivin
sinking of the liquid in the said annular space, because it passes through the porous
carbon and keeps the paste moist. The exciting paste or liquid, may for example,
consist in addition to finely comminuted quebracho wood, of extra of tannin infused
in boiling water, and purified by filtering together with the addition of a small
quantity of a solution of chloride of zinc, the wood particles acting to prevent
polarisation.
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
claim is-
In electric batteries a cell having a carbon cylinder k placed in the annular space
between an outer zinc cylinder z and an inner zinc cylinder r the space between the
carbon and outer zinc cylinder being filled with an exciting paste, whilst the space
between the carbon and inner zinc cylinder is filled with an exciting liquid, which
latter, prior to the composition of the cell is introduced into the interior zinc
tube and thence according to requirements into the inner annular space by turning
over the cell.
Dated thin 19th dor of Mar 1906
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.