Improvements in Galvanic Batteries.
Year: 1899

page_text: Date of Application, 16th Sept., 1899
Complete Specification Left. 8th June, 1900-Accepted, 8th Sept., 1900
Improvements in Galvanic Batteries.
I, PAUL MEYER, of 21 Rue Bienfaisance, Paris, in the Republic of France,
Electrician, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in dry-batteries and comprises the
application of turf-wool for storing the exciting liquid in contact with the
electrodes. It also comprises improvements in connection with the composition
of the depolarizer and the exciting liquid as well as in the arrangements of the
various parts of the battery.
The improved battery constructed according to this invention is distinguished
by simplicity of construction low-resistance, great discharge and by its high
electro-motive force.
The external casing or jar may be of any suitable material and form, for
instance it may be of tin ebonite, indurated card-board, celluloid, glass and so
on of any approved form; it is presumed to be of cylindrical form in the present
case.
This casing or jar contains a zinc plate or cylinder fitting as near as possible
the internal walls of the jar. In the centre of the jar is placed a carbon rod
which may be prismatic or cylindrical in form with or without ribs, or it may be
of
any other shape and may be surrounded by a depolarizing material preferably
composed of
60 to 80 parts Manganese-salt
15 to 30.
2.
Graphite
10
Metallic chloride.
"
The depolarizing material prepared from the above substances well crushed,
mixed and agglomerated forms around the carbon a cylindrical or prismatic
envelope which in its turn is surrounded with a linen cloth or wrapper serving
as a porous vessel. Between the linen wrapper and the internal surface of the
zinc cylinder there is a space more or less regular into which is introduced,
with the aid of a spatula or any other suitable instrument, turf-wool which latter
is conveniently compressed therein.
This material extracted from vegetable turf carded and washed by any known
process, possesses special properties which render it particularly suitable for use
Not only is the absorbing
in dry-batteries for the purpose hereinafter described.
power of turf-wool very great, but above all this material has, as compared with
cellulose as ordinarily employed in dry batteries, the very essential advantage
of being absolutely neutral in the presence of the hydracid contained in the
battery.
This neutrality is so complete that during the electro-chemical action of the
battery there is no formation of glucosides from the action of the hydracids upon
the turf-wool. It is well known that the cellulose heretofore employed in
the construction of dry-batteries does not possess this property which is essential
with regard to the life and to the proper working of the battery.

page_text: The exciting liquid with which the turf wool is impregnated after its com-
pression is by preference composed as follows:-
15 to 30 per cent. of chloride of ammonia.
60 to 80 per cent. of metallic chloride.
After the complete impregnation of the turf-wool the battery is closed by
means of a paste prepared of plaster or other lime-salt mixed with our exciting
liquid, in such a manner as to form a kind of cover; the battery after being pro-
vided with terminals is thus complete.
T
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.
Improvements in Galvanic Batteries.
I, PAUL MEYER, of 21 Rue Bienfaisance, Paris, in the Republic of France,
and of 75, Newman Street, Oxford Street, London, in the County of Middlesex,
Electrician, 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 invention relates to improvements in dry-batteries and comprises the
application of turf-wool for storing the exciting liquid in contact with the
. electrodes. It also comprises improvements in connection with the composition
of the depolarizer and the exciting liquid as well as in the arrangements in the
various parts of the battery.
The improved battery constructed according to this invention is distinguished
by simplicity of construction low-resistances, great discharge and by its high
electro-motive force.
The external insulated casing or jar U may be of any suitable material and
form, for instance it may be of tin, ebonite, indurated cardboard, celluloid, glass
and so on of any approved form; it is presumed to be of cylindrical form in
the present case.
This casing or jar C contains a zinc plate or cylinder, Z, with a wire terminal
attached, fitting as near as possible the internal walls of the jar C. In the
centre of the jar C, is placed a carbon rod, R, which may be prismatic or cylin-
drical in form with or without ribs, or it may be of any other shape and may be
surrounded by a depolarizing material, M, preferably composed of
60 to 80 parts Manganese-salt, or peroxide of manganese
15 to 30
"
Graphite
10
»
Metallic chloride, or chloride of zinc.
I preferably use peroxide of manganese but any salt of manganese may be
employed.
The depolarizing material M prepared from the above substances well crushed,
mixed and agglomerated, forms around the carbon, R, a cylindrical or prismatic
envelope which in its turn is surrounded with a linen cloth L or wrapper serving
as a porous vessel. Between the linen wrapper, L, and the internal surface of
the zinc cylinder, Z, there is a space more or less regular into which is introduced
with the aid of a spatula or any other suitable instrument turf-wool, T, which
latter is conveniently compressed therein.
This material extracted from vegetable turf carded and washed by any known

page_text: process possesses special properties which render it particularly suitable for use
in dry batteries for the purpose hereinafter described. Not only is the absorbing
power of turf-wool very great but above all this material has, as compared
with cellulose as ordinarily employed in batteries the very essential advantage
of being absolutely neutral in the presence of the hydracid contained in the
battery.
This neutrality is so complete that during the electro-chemical action of the
battery there is no formation of glucosides from the action of the hydracids upon
the turf-wool. It is well known that the cellulose heretofore employed in
the construction of dry-batteries does not possess this property which is essential
with regard to the life and to the proper working of the battery.
The exciting liquid with which the turf, T, is impregnated after its compression
is by preference composed as follows:-
15 to 30 per cent. of chloride of ammonia.
60 to 80 per cent. of metallic chloride, or chloride or zinc.
After the complete impregnation of the turf wool the battery is closed by
means of a paste, P', prepared of plaster or other lime-salt mixed with our exciting
liquid and sealed up with pitch or wax or any suitable material, S, in such a
manner as to form a kind of cover; the battery after being provided with ter-
minals is thus complete.
Having now particularly described and ascertained the nature of my said
invention and in wliat manner the same is to be performed, I declare that what
I claim is
A galvanic cell consisting of an insulated casing containing a zinc cylinder
a central carbon, surrounded by depolarizing material, an exciting liquid com-
pounded with turf-wool constructed substantially as described and as illustrated
by the accompanying drawings.
Datcu
LILIS OLIT uay
ከሰ
1000.
PAUL MEYER,
75, Newman Street, Oxford Street, London, W.,
Applicant.