Year: 1886

page_text: I, OLIVER IMRAY of No. 28 Southampton Buildings, Chancery Lane in the
County of Middlesex Fellow of the Institute of Patent Agents do hereby declare
the nature of this invention to be as follows:—
This invention relates to a secondary voltaic battery consisting of a number
of compartments each of which is constructed and arranged in the following
manner.
A shallow trough or tray, of square or rectangular form which may be made of
wood, is lined internally with sheet metal, preferably lead. In this tray are laid
parallel to one another a number of shallow troughs made of insulating material
such as vulcanite, the space which separates each trough from the next in order
being about equal to the width of the trough itself. In the spaces between the
troughs is laid spongy or subdivided lead which lies on the metallic bottom lining
of the tray. In each of the troughs is laid a frame consisting of a number of
parallel leaden ribs as described in the Specification No. 3261 of 1885, each rib
being preferably made with lips at its upper edge projecting towards the spaces on
each side of it so as the better to retain the material in those spaces, which are
packed with a mixture of peroxide of lead and spongy lead. All the parallel
frames have upwardly projecting ends which are soldered to a metal bar as
described in the Specification No. 3261 of 1885 above referred to, this bar
forming one terminal of the compartment. The other terminal is soldered to the
metallic lining of the tray. The tray, when in use, is charged with suitable
exciting liquid such as dilute acid to a depth sufficient to overflow the shallow
troughs and the frames which they contain. The battery may consist of any
desired number of the trays above described with their respective terminals
connected parallel or in series.

page_text: L-
I, OLIVER IMBAY of No. 28 Southampton Buildings Chancery Lane in the
County of Middlesex, Fellow of the Institute of Patent Agents, 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:-
This invention relates to a secondary voltaic battery consisting of a number of
compartments, each of which is constructed and arranged as will be described with
reference to the accompanying drawings.
Fig. 1 is a transverse section of one cell or compartment.
Fig. 2 is a plan of the cell.
Fig. 3 is a perspective view of one of the troughs for holding the positive
electrodes.
}
a is a shallow box or tray which may be of wood or other convenient material,
preferably of low conducting power. b is a second tray made of sheet lead which
is placed within the tray a with a layer c of bitumen or other suitable insulating
and waterproof substance interposed between a and b. On the leaden bottom of
the tray are placed parallel to one another several shallow troughs d made of
ebonite or other suitable insulating material. The bottoms of these troughs d may
be partly open as shown in Fig. 3. In each of the troughs d is laid a skeleton
frame e made of lead or lead a little alloyed with tin or other white metal, this
frame presenting on its upper face numerous grooves f divided by partitions, each
made with inwardly projecting lips so as to retain the material which is packed
into the grooves. All the frames e are soldered or melted at one end to a bar g
which is the positive terminal of the compartment. The negative terminal h is
soldered to any part of the lead lining b. The grooves fare filled with spongy lead
or per-oxide of lead mixed with low oxide of lead or metallic lead. In the spaces
between the troughs d may be placed also frames e or separate bars of lead, and
also spongy lead, which however is not necessary. A number of the trays can be
placed, one above another, within a box which can be charged with suitable
exciting liquid, and in this case the bottoms of the trays a should be perforated to
allow circulation of the liquid from cell to cell. The terminals g and h from the
several cells can be connected either parallel or in series or grouped as may be
required for intensity or quantity.
Having now particularly described and ascertained the nature of mỹ said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
A secondary voltaic battery consisting of cells each of which is a shallow box or
tray of wood or other like material lined with bitumen or equivalent substance and

page_text: sheet lead, and contains parallel shallow troughs of insulating material in which
are laid skeleton metallic frames all connected at one end to one terminal of the
cell whilst the other terminal is connected to the lead lining, the skeleton frames
and the spaces between the troughs containing them being charged with the
5 elements of the battery and the exciting liquid, substantially as herein described.
Dated thin 19th dort of October 1000
ABEL & IMRAY,
Agents for the Applicant,