Year: 1897

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 18 of the Patents, &c. Act, 1883) as allowed
the decision of the Comptroller General of the 28th day of January 1899.
I, ARTHUR REGINALD ADAMS, of Guys Hospital, in the County of Surrey, England,
Cheinist, do hereby declare the nature of this invention to be as follows:-
This invention relates to electric batteries and more particularly those known as
primary batteries and has for its object the composition of an exciting fluid for use
in the same.
According to my invention instead of employing chemicals in the form of finished
products for this purpose I make use of the crude salts, thus obtaining an efficient
Huid at a much cheaper rate than when manufactured chemicals are employed. The
chemicals which I mainly utilise comprise a chromium salt in solution treated by.
sulphuric acid and added to a solution of nitric acid or a nitrate in conjunction with
mercury or a salt of mercury.
I may combine the above materials in various ways and proportions, but I will
proceed to describe five examples of the manner in which I prefer to do this.

page_text: 1. 10 ounces of chromate of potash are dissolved in 120 ounces of water and 100
ounces of sulphuric acid are added.
2. 10 ounces of metallic zinc are dissolved in a mixture of 40 ounces of nitric acid
and 20 ounces of water, the solution being added to No. 1.
3. 2 ounces of nitrate of mercury are then added or in place of this, mercury in
the shape of well amalgamated plates in the battery may be employed.
D.
1. 80 ounces of sodium nitrate are dissolved in 400 ounces of water.
2. 10 ounces of chromate of mercury are dissolved in 40 ounces of water and 220
ounces of sulphuric acid are added. This mixture is added to No. 1 and the two
intimately mixed at a temperature not exceeding 100° Fahrenheit.
In this case only two solutions are necessary since chromate of merenry is both
a chromium and a mercurial salt.
E.
1. 10 ounces of chromate of soda are dissolved in 130 ounces of water and 75
ounces of sulphuric acid are added.
2. 20 ounces of potassium nitrate are dissolved in 50 ounces of water and mixed
with No. 1.
3. 10 ounces of perchloride of mercury are dissolved in 50 ounces of boiling water.
This is added to the mixed solutions Nos. 1 and 2 at a temperature of not less than
100° Fahrenheit, the whole being well stirred.
The above indicate my preferred alternative methods of composing the improved
exciting fluid for electric batteries, but I wish it to be understood that I may find
it convenient to depart from the exact proportions above mentioned without affecting
my invention.
Dated this 12th day of February 1897.
BOULT & WADE,
Agents for the Applicant.
I, ARTHUR REGINALD ADAMS, of Guys Hospital, in the County of Surrey, Chemist,
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 electric batteries and more particularly those known as
primary batteries and has for its object the composition of an exciting fluid for use
in the same.
According to iny invention instead of employing salts in the form of finished
products for this purpose I make use of the crude salts, thus obtaining an efficient
fluid at a much cheaper rate than when pure salts are employed. The chemicals which
I mainly utilise comprise a chromium salt in solution treated by sulphuric acid and
added to a solution of nitric acid or a nitrate in conjunction with mercury or a
salt of mercury.
I may combine the above materials in various ways and proportions, but I will
proceed to describe five examples of the manner in which I prefer to do this.

page_text: sulphuric acid of a solution of nitric acid or a nitrate and mercury or a salt of mercury
substantially as described.
2. An exciting fluid for electric batteries, composed of aqueous solutions of
chromate of potash with sulphuric acid and of sodium nitrate together with a
solution of mercury in either nitric acid or sulphuric acid substantially as and in
about the proportions described.
3. An exciting fluid for electric batteries, composed of aqueous solutions of
chromate of potash with sulphuric acid and of metallic zinc with nitric acid together
with mercury nitrate or metallic mercury substantially as and in about the proportions
described.
4. An exciting fluid for electric batteries composed of an aqueous solution of sodium
nitrate together with an aqueous solution of chromate of mercury with sulphuric acid
substantially as and in about the proportions described.
5. An exciting fluid for electric batteries composed of aqueous solutions of
perchloride of mercury of potassium nitrate and of chromate of soda, the latter with
sulphuric acid substantially as and in about the proportions described.
Dated this 29th day of September 1897.
ARTHUR REGINALD ADAMS.
BOULT & WADE,
Agents for the Applicant.