An Improved Galvanic Dry Battery or Cell, and a Composition for use in such Cells.
Year: 1892

page_text: Date of Application, 13th Dec., 1892-Accepted, 11th Mar., 1893
COMPLETE SPECIFICATION.
An Improved Galvanic Dry Battery or Cell, and a Composition for
use in such Cells.
I, REGINALD HADDAN Patent Agent of the firm of Herbert Haddan & Co. of
18 Buckingham Street Strand W.C. London do hereby declare the nature of this
invention a communication to me from abroad by Ramon Gabarro of Barcelona in
the Kingdom of Spain Manufacturer 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 this invention is to produce a simple cheap and effective galvanic
battery or cell of the kind usually termed a "dry cell."
Reference being made to the annexed sheet of drawings;—
Fig. 1 is an elevation of the improved cell.
Fig. 2 is a plan view thereof.
Fig. 3 is a vertical central section on the line A. B Fig. 1, and
Fig. 4 is a horizontal section-on line C D Fig. 3.
The outer vessel a forms one of the electrodes and is made of zinc, it may be of
any suitable shape but the cylindrical form shown in the drawings is perhaps the
most convenient. The base of the vessel is filled with a layer c of electrically
insulating material, preferably wax, and on this the other electrode, a central block
of carbon b rests. This block may be hollow or solid and of any suitable form,
that shown in the drawings being cylindrical. On the upper end of the electrode b
is a binding screw of suitable kind. Between the electrodes a and b the cell is filled
with the composition e hereinafter described and the upper end of the cell is sealed
and closed with a filling of insulating material d, preferably resin.
The composition is as follows:-The following materials are taken in the
proportions given and are mixed together.
Sal ammoniac NHCl -
Chloride of zinc ZnCl,
Oxide of zinc ZnO
Water H₂O
Sulphate of magnesia MgSO
Clay
Ivory black
-
-
To these may be added if desired;
Hydrochloric acid HCl
Mercuric sulphate HgSO
175 parts.
100 do.
150 do.
-
125 do.
-
100 do.
-
225 do.
25 do.
-
100 parts.
100 parts.
According to the purpose which the cells are to serve some of the above
ingredients may be omitted or replaced by others of equivalent nature.
In certain instances two compositions may be employed similar in their respective
actions and effects to the two fluids of two fluid batteries, the said two com-
positions being inserted each next to the respective electrode on or with which it is
more particularly to operate.
For the one composition a suitable mixture is
Sal ammoniac
1.75

page_text: 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. A galvanic dry cell consisting of an outer vessel of zinc, a layer of wax or
equivalent insulating material in the base thereof, a central hollow or solid electrode
of carbon in said vessel, a composition or combination of two compositions between
the carbon and zinc and a sealing of resin or equivalent insulating material filling
the upper part of said vessel.
2. In a galvanic dry cell the composition consisting of the material described in
or approximately in the proportions specified.
Dated this 19th dow of December 1892