An Improved Electrolyte or Depolarizing Solution for Galvanic Batteries.
Year: 1888

page_text: Date of Application, 5th Oct., 1888
Complete Specification Left, 3rd Aug., 1889-Accepted, 5th Oct., 1889
PROVISIONAL SPECIFICATION
An Improved Electrolyte or Depolarizing Solution for Galvanic
Batteries.
I, SAMUEL MILLER of 1 Langton Cottages Melbourne Square Brixton in the
county of Surrey, "Engineer" do hereby declare the nature of this invention to
be as follows
This Invention has for its object to provide an Improved electrolyte or Depolarizing
solution more especially intended for use in a two liquid Battery of the kind
described in the specification of my application for a Patent for "An Improved
Galvanic Cell or Battery for Electric Lighting and for other purposes" of even
date herewith-The said electrolyte or Depolarizing solution consists of Nitrate of
Sola, Bichromate of Potash, Chloride of Sodium and sulphuric acid or Hydrochloric
acid and is preferably prepared in the following way and in about the following
proportions In 1 quart of cold water I dissolve lb. of Nitrate of Soda and 2 ounces
of Bichromate of Potash and to this solution I then add 15 fluid ounces of sulphuric
acid or hydrochloric acid, it being added slowly, so as to generate as little heat as
possible When this solution is quite cold I add 2 ounces of chloride of Sodium.
Dated this 5th of (Litabor 1888
RAYNER & CASSELL,
43, Southampton Buildings, Chancery Lane, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Electrolyte or Depolarizing Solution for Galvanic
Batteries.
I SAMUEL MILLER of 1 Langton Cottages Melbourne Square Brixton in the County
of Surrey Engineer 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 has for its object to provide an improved electrolyte or depolarizing
solution more especially intended for use in a two liquid battery of the kind described
in the Specification of iny application for a Patent for "An improved galvanic cell or
battery for electric lighting and for other purposes" the said application being of even
date herewith.
The said electrolyte or depolarizing solution consists of or contains Nitrate of Soda;
Bichromate of Potish; Chloride of. Sodium; and Sulphuric Acid, or Hydrochloric
acid or both such acids.
This solution may be prepared as follows:-
In one quart of cold water I dissolve half a pound of Nitrate of Soda and two
ounces of Bichromate of Potash and to this solution 1 add fifteen fluid ounces of
Sulphuric Acid or Hydrochloric-Acid or a mixture of such acids it being added slowly
so as to generate as little heat as possible. When this solution is quite cold I add two
ounces of Chloride of Sodium.
I also find that it can be very satisfactorily prepared in the following way :-
To one quart of cold water I add gradually one pint of Sulphuric Acid or Hydro-
chloric Acid or a mixture of the two acids and I allow the solution to cool preferably
to 75° Fahrenheit. I then add six ounces of finely powdered Nitrate of Sola and one
and a half ounces of finely powdered Bichromate of Potash. The mixture is then
thoroughly stirred until the solids are dissolved and then one ounce of Chloride of
Sodium is added The whole may then be finally stirred. The ingredients named

page_text: may be those which are procurable as commercial products. The foregoing solution
is more especially suitable for the larger class of batteries. If the batteries be of
the smaller kind such as for Miner's lamps it is preferred to use four ounces each
of the Nitrate of Soda and the Bichromate of Potash.
It will be seen from the foregoing directions that the proportions used may be
varied somewhat to suit different cases but any of the above proportions will enable
the good results of my invention to be obtained although the proportions which in
any individual case will produce the maximum efficiency, will not be the same in all
cases.
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
1. An electrolyte or depolarizing solution consisting of or containing Nitrate of
Soda Bichromate of Potash; Chloride of Sodium; and Sulphuric Acid, or Hydro-
chloric Acid, or both such acids.
2. Electrolytes or depolarizing solutions consisting of or containing Nitrate of
Soda Bichromate of Potash; Chloride of Sodium; and Sulphuric acid, or Hydro-
chloric Acid or both such acids, substantially in the proportions and prepared as
hereinbefore described.
Dated this 18th day of February 1889