Year: 1886

page_text: Batteries.
We, HENRY WEYMERSCH of 26 Rue Grammont, Paris, in the Republic of France
Chemist, and JAMES WHITTALL of 9 Fenchurch Avenue, in the City of London,
Merchant, do hereby declare the nature of this Invention to be as follows:-
This Invention relates to an improved solution which may be employed in any
description or construction of battery now in use and has for its object to obtain
from a certain quantity of liquid a greater quantity of electrical energy than .
heretofore.
This Improved solution consists of the following ingredients; viz:-
1 part by weight of permanganate of potash.
4 parts by weight of Sulphate of potash.
8 parts by weight of Sulphate of Magnesia.
128 parts by weight of Bichromate of Soda.
256 parts by weight of Sulphuric Acid.
Water is added in auantity depending upon the strength of Better anised.

page_text: Batteries.
We HENRY WEYMERSCH of 45, Landcroft Road East Dulwich in the County of
Surrey late of 20 Rue Grammont Paris in the Republic of France Chemist and
JAMES WHITTALL of 9 Fenchurch Avenue in the City of London Merchant 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 an improved solution (or electrolyte) which may be
employed with advantage in any description or construction of primary electric
battery but is especially suited for use in a battery wherein carbon and zinc are
used as electrodes the object of the Invention being to provide a solution or 1
electrolyte from a given quantity of which used in a battery a more efficient action
is obtained or a greater quantity of electrical energy is given out than is the case
with batteries wherein ordinary solutions or electrolytes are employed. The
improved electrolyte or solution constituting this Invention consists of Perman-
ganate of Potash Sulphate of Potash, Sulphate of Magnesia, Bichromate of Soda
and Sulphuric Acid with water in quantity sufficient to make a solution or
electrolyte suited to the strength of the battery required.
We do not limit ourselves to any precise proportions of the ingredients but we
find that the following give good results and are the best for carrying this
Invention into practical effect :-
Permanganate of Potash 3 grammes (1% Drachms).
Sulphate of Potash 6 grammes (3 drachms).
Sulphate of Magnesia 3 grammes (1 drachins).
Bichromate of Soda 1 Kilo 230 grammes (2 lbs 10 oz)..
Sulphuric Acid (of 66°) 1 Kilo 800 grammes (4 lbs).
Water preferably boiled or distilled) 5 kilos (5 quarts).
"
We give the following as the best way with which we are acquainted of
preparing the solution or electrolyte from the foregoing materials premising
however that we do not limit ourselves to this mode of preparation as any other
mode which may be found desirable in practice may be adopted-The sulphate of
Potash is first dissolved in the Sulphuric acid-The bichromate of Soda is dissolved
with the application of heat in a bain-marie in the quantity of water necessary
for its absorption (usually about 2 quarts) and the solution of Sulphate of Potash
in sulphuric acid is added thereto and after complete mixture (which may be
insured by agitation) has been effected the remaining three quarts of water are
added the permanganate of Potash and Sulphate of Magnesia having been first
dissolved in the said water. The whole is then heated in the "bain-marie" until
it thoroughly clarifies and it is afterwards allowed to cool slowly in order to main-
tain the salts in suspension and prevent crystallization.

page_text: There is thus produced an electrolyte or solution which is suited. for use in an
electric battery. When it is desired to obtain a compound which can be sold or
transported in solid form we use Chromic acid as a substitute for sulphate of
Magnesia and then the following proportions are suitable.
Permanganate of potash 2 grammes (1 drachm).
Sulphate of Potash 6 grammes (3* drachms).
Chromic acid 125 grammes (4 ounces).
Bichromate of Soda 1 kilo 230 grammes (2 lbs 10 oz).
Sulphuric acid (at 66°)1 kilo 800 grammes (4 lbs :).
The Bichromate of Soda the Chromic Acid and the Sulphuric acid, in which the
Sulphate of Potash has been dissolved are placed in the "bain-marie" and heated
until the mixture is complete the materials being continually agitated. By
allowing this mixture to cool a solid product is obtained which merely requires.
the addition of water (about 5 quarts of boiled or distilled water for the herein-
before given quantities of materials) in which the Permanganate of Potash has
been dissolved) when the electrolyte or solution is required for use in a battery―
The water should be heated to accelerate the solution of the salts but the solution
should be cold when put into the battery.
In case it is not required to obtain the product in a solid form the materials are
mixed whilst heated with water in quantity the same as that used for dissolving
the permanganate of potash in the first example (the permanganate of potash being
first dissolved in the water so employed) and afterwards the solution is reduced to
the required strength by the addition of the remaining water.
Having now described the nature of this Invention and the manner in which
the same may be carried out in practice we declare that what we claim is
First An electric battery solution or electrolyte consisting of, or containing,
Permanganate of potash Sulphate of potash, Bichromate of Soda Sulphuric Acid,
and Sulphate of magnesia (or Chromic acid) dissolved in water substantially as
hereinbefore described.
Second-An electric battery solution or electrolyte consisting of or containing
the ingredients as herein before described and claimed dissolved in water and in the
proportions herein before described.
Third An electric battery solution or electrolyte consisting of the ingredients
as herein before described and claimed prepared in the manner hereinbefore
described.
Fourth For an electric battery solution or electrolyte the product consisting of,
or containing, sulphate of Potash, Bichromate of Soda, Sulphuric acid and Chromic
acid for subsequent dissolving in a solution of Permanganate of Potash for use
substantially as herein before described.