NEW OR IMPROVED EXCITANTS FOR GALVANIC BATTERIES
Year: 1884

page_text: We JOHN JAMES LUNDY of 56 Leadenhall Street, London Chemist and WILLIAM
FEREDAY BOTTOMLEY of Wood Green in the County of Middlesex Electrical
Engineer do hereby declare the nature of our invention for "NEW OR IMPROVED
EXCITANTS FOR GALVANIC BATTERIES" to be as follows:-
J
This Invention relates to the employment of new or improved excitants for
Galvanic batteries and has for its object to preserve the electrodes and also to
prevent the evaporation creeping and crystallization of the excitants; thus greatly
augmenting the permanence of the battery and effecting a considerable economy
in the cost of maintenance.
The chlorides hitherto employed as excitants for galvanic batteries have been
those of Ammonium-Potassium-Silver-Sodium and Zinc-the effect of which
has been either to destroy or otherwise prejudicially effect the electrodes or other
parts of the battery such as the terminals and connecting wires.
Now by repeated and exhaustive experiments we have discovered that such
detrimental effects may be obviated by substituting for such before mentioned
chlorides chlorides of magnesium or chloride of maganese; either of which alone
owing to their deliquescent properties may be employed as excitants with extremely
beneficial results.
Another feature of our invention consists in using either chloride of magnesium
or chloride of manganese or both in combination with each other or with chloride
of zinc in solution, or in combination with any other compatible chloride or
chlorides; or in solution with any compatible salt or salts such as sulphate of
sodium sulphate of magnesium or sulphate of potassium.
By the expressions "any other compatible chloride or chlorides" and "any
compatible salt or salts" we mean any such chloride or salt or chlorides or salts as
will not produce when mixed in solution double decomposition or precipitation.

page_text: We, JOHN JAMES LUNDY of 56, Leadenhall Street, London, Chemist, and
WILLIAM FEREDAY BOTTOMLEY of Wood Green in the County of Middlesex
Electrical Engineer do hereby declare the nature of our invention for NEW OR
IMPROVED EXCITANTS FOR GALVANIC BATTERIES 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 the employment of new or improved Excitants for
galvanic batteries and has for its object to preserve the electrodes and also to
prevent the evaporation creeping and crystallization of the excitants thus greatly
augmenting the permanence of the battery and effecting a considerable economy in
the cost of maintenance.
The clorides hitherto employed as excitants for galvanic batteries have been those
of Ammonium Potassium Silver Sodium and Zinc the effect of which has been
either to destroy or otherwise prejudicially affect the electrodes or other parts of
the battery such as the terminals and connecting wires.
Now by repeated and exhaustive experiments we have discovered that such
detrimental effects may be obviated by substituting for such before mentioned
chlorides-chloride of magnesium or chloride of manganese either of which alone
owing to their deliquescent properties may be employed as excitants with extremely
benificial results.
Another feature of our invention consists in using either chloride of magnesium
or chloride of manganese, or both, in combination with each other, or with chloride
of zinc in solution, or in combination with any other compatible chloride or
chlorides or in solution with any compatible salt or salts such as sulphate of
sodium, sulphate of magnesium or sulphate of potassium.
"
By the expressions any other compatible chloride or chlorides" and "any
compatible salt or salts" we mean any such chloride or salt, or chlorides or salts, as
will not produce when mixed in solution double decomposition or precipitation.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
1° The employing either chloride of magnesium or chloride of manganese
separately and alone as an excitant for a galvanic battery as hereinbefore specified.
2° The employing either chloride of magnesium or chloride of manganese in
combination with each other, or with chloride of zinc in solution or in combination
with any other compatible chloride or chlorides as excitants for a galvanic battery
as hereinbefore specified.
3° The employing either chloride of magnesium or chloride of manganese or
both in combination with each other in solution with sulphate of sodium, sulphate
of magnesium or sulphate of potassium or with any compatible salt or salts as
excitants for a galvanic battery as hereinbefore specified.
Dated this 25th day of October 1884.