An Improvement in Secondary Voltaic Batteries.
Year: 1894

page_text: Date of Application, 12th Sept.,
4004
Complete Specification Left, 10th June, 1895-Accepted, 13th July, 1895
Dal of Application
Complete Specification Left, 10th June, 1895-Accepted, 13th July, 1895
PROVISIONAL SPECIFICATION.
An Improvement in Secondary Voltaic Batteries.
I, LUDWIG EPSTEIN, of No. 5 Cambridge Villas, East Twickenham, in the
County of Middlesex, Electrical Engineer, do hereby declare the nature of this
invention to be as follows:-
My invention relates to a construction of secondary voltaic batteries whereby
I considerably reduce weight and enhance efficiency.
The cell of a battery, according to this invention, contains, as usual, a number
of parallel and alternating positive and negative plates. The positive plates may
be of any known kind, preferably of the kind described in my Specification
No. 350 of 1890. The negative plates consist of discs of copper wire gauze
amalgamated and coated with zinc electrolytically deposited on the amalgamated
surface. These discs are fixed on a spindle which extends along the cell, passing
through the positive plates without touching them or insulated from them.
From time to time this spindle is turned partly round, so as to avoid unequal
action on the discs owing to the difference of deusity of the electrolyte at different
depths.
The positive plates are connected to conductors in the usual way; the spindle
serves as conductor for the negative discs. The spindles of several cells may be
mechanically connected so that all may be turned simultaneously.
Dated this 12th day of September 1894.
ABEL & IMRAY,
Agents for the Applicant.
An Improvement in Secondary Voltaic Batteries.
I, LUDWIG EPSTEIN, of Rose Bank, Park Road, East Twickenham, in the
County of Middlesex, Electrical Engineer, late of No. 5 Cambridge Villas,
East Twickenham, 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 relates to a construction of secondary voltaic battery whereby
I considerably reduce weight and enhance efficiency.
The cell of a battery according to this invention contains, as usual, a number of
parallel and alternating positive and negative plates. The positive plates may be
of any known kind, preferably of the kind described in my Specification No. 350
of 1890. The negative plates consist of discs, which may be of copper wire gauze
amalgamated and coated with zinc electrolytically deposited on the amalgamated
surface. These discs are fixed on a spindle which extends along the cell, passing
through the positive plates, through holes of these plates without touching them
or insulated from them. From time to time this spindle is turned partly round
or it is continuously turned so as to avoid unequal action on the discs owing to
the difference of density of the electrolyte at different depths, and to allow of a
stronger current in charging.

page_text: なり
be
In order to avoid passing the spindle through the sides of the cell, I fix near
one end of it a pulley, or chain wheel, connected by a band, or chain to an insulated
pulley or chain wheel above the electrolyte, so that by turning this upper pulley
or wheel, I can turn the spindle. Or a ratchet wheel fixed on the spindle may
turned by a pawl moved by a rod extending above the electrolyte. The positive
plates are connected to conductors in the usual way; the spindle may serve as
conductor for the negative discs, connecting them all to its end bearing whence
a conducting arm may extend up to a main conductor above. The spindles of
several cells may be mechanically connected, so that all may be turned simul-
taneously, for which purpose several of the pulleys or chain wheels from which
those on the spindles are worked, may be fixed on one spindle or have their
spindles connected. by. bands or suitable gearing; or when ratchets and pawls
are used, the pawl rods may be reciprocated by cranks on a shaft or on several
connected shafts..
:
Although I have described the negative discs as being made of copper wire
gauze, they may be made of other material, either woven or perforated to give
extended surface which, if non-conducting, may have its surface coated with
conducting material on which zinc can be electrolytically deposited. The discs
may be rotated during the electrolytic action upon them.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is:
TE tr
1. In a secondary voltaic battery, negative plates of disc form having extended
surfaces coated with zinc and mounted on a spindle which can be caused to revolve,
substantially as and for the purpose herein set forth.
i 2. In a secondary, voltaic battery negative plates of disc form constructed of
wire gauze having extended surfaces coated with zinc and mounted on a spindle
which can be caused to revolve substantially as and for the purposes herein
set forth.
3.Inia secondary voltaic battery the method of preventing unequal action on,
the electrodes by revolving them substantially as described.
Dated this 10th day of June 1895.
ABEL & IMRAY,
Agents for Applicant.