Method of Working the same.
Year: 1885

page_text: Method of Working the same.
I STEPHEN HENRY EMMENS of 8, Argyll Street, Regent Street, in the County of
Middlesex, Electrical Engineer do hereby declare the nature of my invention for
IMPROVEMENTS IN COMPOUND GALVANIC BATTERIES AND IN THE MATTER OF
WORKING THE SAME, to be as follows:-
My invention is designed first to simplify the construction of compound galvanic
batteries by combining in each cell the primary and secondary elements, and
secondly, to diminish the cost of charging such secondary elements.
I accomplish these objects by employing as the electrodes of each cell one or
more peroxidised lead plates and one or more plates of zinc or any other metal
that is electro-positive to such peroxidised lead plates. The lead plates are
mounted in frames or otherwise made easily removable so that when exhausted of
their available oxygen they may be readily changed for fresh plates and the action of
the battery thus maintained for any length of time. The electrolyte is preferably
composed of dilute sulphuric acid, but may be any suitable saline solution, and can
be drawn off wholly or in part and renewed as required.
In order to charge the lead plates with oxygen I employ them as anodes in an
electrolytic bath containing any solution capable of yielding oxygen when subjected
to electrolysis. I prefer that the cation shall be such as to show only a small
difference of potential and thus to minimise the consumption of energy in charging
the anode with oxygen. For example, I find it advantageous to make use of a
solution of copper sulphate for the electrolyte in the bath, as thereby I am enabled
to charge my lead plates by means of a current of lower electromotive force than
that evolved by their discharge in the battery and I also cover the cost of charging
by the production of metallic copper and the setting free of sulphuric acid which
may be used for the extraction of a further quantity of copper from ores or
precipitate of that metal or from waste substances containing it.
I am aware that secondary cells have been constructed of zinc and lead and
copper and lead electrodes respectively, but my combination of removable secondary
electrodes in primary cells and my further combination of a charging bath of low
tension or otherwise advantageous by the deposition of metals are, I believe, as
novel as they are undoubtedly beneficial in practice.
1. T

page_text: Method of Working the same.
I, STEPHEN HENRY EMMENS, of 8 Argyll Street, Regent Street, in the County of
Middlesex, Electrical 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:-
My invention is designed first to simplify the construction of compound galvanic
batteries by combining in each cell the primary and secondary elements, and
secondly, to diminish the cost of charging such secondary elements.
.I accomplish these objects by employing as the electrodes of each cell one or
more peroxidised lead plates and one or more plates of zinc or any other metal
that is electro-positive to such peroxidised lead plates. The lead plates are
mounted in frames or otherwise made easily removable, so that when exhausted of
their available oxygen they may be readily changed for fresh plates, and the action.
of the battery thus maintained for any length of time. The electrolyte is preferably
composed of dilute sulphuric acid, but may be any suitable saline solution, and can
be drawn off wholly or in part and renewed as required.
In order to charge the lead plates with oxygen I employ them as anodes in an
electrolytic bath containing any solution capable of yielding oxygen when subjected
to electrolysis. I prefer that the cation shall be such as to show only a small
difference of potential, and thus to minimise the consumption of energy in charging
the anode with oxygen. For example, I find it advantageous to make use of a
solution of copper sulphate for the electrolyte in the bath, as thereby I am enabled
to change my lead plates by means of a current of lower electromotive force than
that evolved by their discharge in the battery, and I also cover the cost of charging
by the production of metallic copper and the setting free of sulphuric acid, which
may be used for the extraction of a further quantity of copper from ores or
precipitate of that metal, or from waste substances containing it.
Having now fully described and ascertained the nature of my said invention and
in what manner the same is, to be performed I declare that I am aware that
secondary cells have been constructed of zinc and lead and copper and lead
electrodes respectively, but my combination of removable secondary electrodes in
primary cells and my further combination of a charging bath of low tension or
otherwise advantageous by the deposition of metals, are I believe, as novel as they
are undoubtedly beneficial in practice, and I therefore claim :-
1st The construction and combination of removable secondary electrodes in
primary cells, substantially as specified.
2nd The further combination therewith of a charging bath, substantially as
specified.