An Improved Battery Compound.
Year: 1890

page_text: COMPLETE SPECIFICATION.
An Improved Battery Compound.
I, CHARLES MONTGOMERY REED, of Boston, County of Suffolk, and State of
Massachusetts, in the United States of America, Counsellor-at-Law, do hereby declare
the nature of my invention for AN IMPROVED BATTERY COMPOUND, and in what manner
the same is to he performed, to be particularly described and ascertained in and by the
following statement :-
My invention has for its object the production of a compound to be used as a
constituent of the exciting fluid in a galvanic battery, which will produce a battery
fluid of unusual power and endurance.
My invention consists generally of a battery compound composed of tri-oxide of
chromium and muriate of ammonia; it also consists in combining said ingredients
with water and either with or without the addition of an acid.
The combination of tri-oxide of chromium and muriate of ammonia, when dissolved
in water, with or without the addition of sulphuric or other acid, does not polarize,
and may be used in a single fluid battery without a porous cup.
For most purposes however, it is more effective when used in the outer cell of a
double fluid battery with an inner porous cup containing dilute sulphuric acid.
I do not confine myself to any specific proportions of the ingredients above named,
but for most purposes I prefer to use three parts by weight of the tri-oxide of
chromium to one part of muriate of ammonia.
Such a compound composed of three quarters of a pound of tri-oxide of chromiam
and one quarter of a pound of muriate of ammonia dissolved in a gallon of water
containing a little sulphuric acid produces a battery fluid which is extremely effective.
For the production of an electric current for lighting purposes however, a stronger
solution is desirable, and for this purpose I have found the proportion of two pounds
of tri-oxide of chromium and six ounces of muriate of animonia to a gallon of acidulated
water extremely effective.
Muriatic, nitric, or other acid may be used for this purpose, but I prefer to use
sulphuric acid in such proportions as when added to the water, the dilute acid will be
of the specific gravity of 11-50 at the temperature of 60 degrees Fahrenheit.
While it will usually be found most convenient to mix the two ingredients above
mentioned and to form the battery fluid by dissolving the compound in the acidulated
water, the fluid may be made by mixing the ingredients in any desired order without
affecting the efficiency of the solution.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is,
1st. The improved battery compound composed of tri-oxide of chromium and muriate
of ammonia, as set forth.
2nd. The improved battery fluid composed of tri-oxide of chromium and muriate of
ammonia combined with water, as set forth.
3rd. The improved battery fluid composed of tri-oxide of chromium and muriate of
ammonia dissolved in water, and combined with sulphuric acid or its described
equivalent, as above set forth.
Dated
Tal
A1800
PALGU BAHIN HIGH VOY
CHARLES BONTGOMERY REED.
G. F. Redfern & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.