An Improvement in Electrical Batteries.
Year: 1888

page_text: Date of Application, 12th Sept., 1888
Complete Specification Left, 27th May, 1889-Accepted, 29th June, 1889
PROVISIONAL SPECIFICATION.
An Improvement in Electrical Batteries.
I, WILLIAM CLARK, of the firm of A. M. and Wm. Clark, of 53, Chancery Lane,
in the County of Middlesex, Fellow of the Institute of Patent Agents, do hereby
declare the nature of this Invention a communication to me from abroad by Louis
Maiche, of 3, Rue Louis-le-Grand, Paris, France, Electrical Engineer, to be as
follows
'
In all galvanic batteries, and more especially those which are required to serve for
lengthened periods, such as those used for telegraphic and telephonic purposes, it is
essential that the exciting liquid employed should be ;
(1) Capable of being dissolved in water.
(2) Free from liability to decompose at the ordinary temperature.
(3) A good electrical conductor.
(4) Capable of dissolving the metallic oxides which may form.
Free from liability to produce insoluble sub-salts, whether crystallizable or
creeping, whose presence considerably increases the internal resistance of the
element.
This Invention relates to a novel exciting solution which combines all the above
conditions, and which may be used for charging and maintaining all kinds of galvanic
batteries, whether of the single fluid or two-fluid type.
The solution in question consists of citrate of ammonia dissolved in water, the
relative proportions of the salt and the water being varied according to circumstances
and ranging between saturation of the water with the salt and a very weak solution.
The citrate of ammonia employed, may be prepared in any suitable manner.
Dated this 12th day of Sept Gruber 1888.
WM. CLARK.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
An Improvement in Electrical Batteries.
I, WILLIAM CLARK, of the firm of A. M. and Wm. Clark, of 53, Chancery
Lane, in the County of Middlesex, Fellow of the Institute of Patent Agents, do hereby
declare the nature of this invention (a communication to me from abroad by Louis
Maiche, of 3, Rue Louis-le-Grand, Paris, France, Electrical Engineer) and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:-
In galvanic batteries, particularly those which are kept in use for a long time as in
telegraphy and telephony, it is essential that the electrolytic exciting agent employed.
should combine the following qualities
(1) Solubility in water.
(2) Non-decomposability at the ordinary temperature.
(3) Good electrical conductivity.
(4) Capability of dissolving the metallic oxides which may form.
(5) Non-liability to form insoluble crystallizable or creeping sub-salts whose
presence would considerably increase the internal resistance of the element.
This Invention relates to a new exciting agent combining the above qualities and
which may be used for charging and refreshing galvanic batteries whether of the one
or two fluid type. It consists of citrate of ammonia dissolved in water. The relative
[P1]

page_text: proportions of the salt and the water would be varied according to circumstances
and may range between a very weak solution and complete saturation. The citrate of
ammonia may be prepared in any suitable manner.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what ]
claim is :-
The employment of citrate of ammonia dissolved in water as an electrolytic
exciting agent for galvanic batteries and especially those intended for continuous use,
as specified.
Dated this 27th day of May 1889.
WM. CLARK.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.