An Improved Construction of Plates for Secondary or other Voltaic Batteries.
Year: 1889

page_text: Date of Application, 27th Nov., 1889
Complete Specification Left, 7th July, 1890-Accepted, 9th Aug.. 1890
PROVISIONAL SPECIFICATION.
An Improved Construction of Plates for Secondary or other Voltaic
Batteries.
I, HENRY TYRER CHESWRIGHT of Carcassonne, Department of Aude, France,
Manufacturer do hereby declare the nature of this invention to be as follows:-
The object of this invention is to produce in a simple manner a strong durable plate
for holding the lead oxide or other analogous material employed in secondary and
other voltaic batteries. For this purpose I punch holes through a plate of lead or of
lead alloy, punching them in such a manner that portions of the metal are forced
outwards by the punch forming short tubes with ragged edges projecting beyond the
surface of the plate. Rows of these are punched from each side so as to furnish
irregular tubular projections on both sides of the plate, and the plate itself may be
roughened by indentations in the spaces between the holes. Instead of forming the
holes and tubular projections by punching a plate, the plate may be cast with these
and its indentations formed by a suitable mould. The plate which may be of
rectangular or other shape is surrounded by a border flange projecting on each side a
little beyond the ends of the tubular projections. This border flange may be cast with
the plate or it may be made separately and have the plate soldered into it.
The plate thus prepared can be covered on each side with the paste of lead
oxide or other material. The two layers of material thus laid on are held firmly
in the intervals between the tubular projections and are also connected together
through the holes of the plate, with which they are in contact over a very extended
surface.
5711 1
Namban 1880
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Construction of Plates for Secondary or other Voltaic
Batteries.
I, HENRY TYRER CHESWRIGHT of Carcassonne, Department of Aude, France,
Manufacturer, 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 :-
The object of this invention is to produce in a simple manner a strong durable plate
for holding the lead oxide or other analogous material employed in secondary and
other voltaic batteries. For this purpose I punch holes through a plate of lead or
of lead alloy, punching them in such a manner that portions of the metal are
forced outwards by the punch forming short tubes with ragged edges projecting
beyond the surface of the plate. Rows of these are punched from each side so as
to furnish irregular tubular projections on each side of the plate, and the plate itself
may be roughened by indentations in the spaces between the holes. Instead of
forming the holes and tubular projections by punching a plate, the plate may be cast
with these and its indentations formed by a suitable mould. The plate which may
be of rectangular or other shape is surrounded by a border flange projecting on
each side a little beyond the ends of the tubular projections. This border flange
may be cast with the plate, or it may be made separately and have the plate
soldered into it.
The plate thus prepared can be covered on each side with the paste of lead oxide or
other material.

page_text: The two layers of material thus laid on are held firmly in the intervals between the
tubular projections and are also connected together through the holes of the plate,
with which they are in contact over a very extended surface.
Fig. 1 of the accompanying drawings is a front view and Fig. 2 is a vertical
section of one form of rectangular battery plate according to my invention.
The plate A may be cast with a border flange B or this flange may be a separate
frame into which the plate A is soldered. In the plate A I form a number of rows of
holes punched from the one side of the plate and rows of holes D punched from the
other side, the punch in each case forcing the metal of the plate outwards in the form
of short tubular projections with their edges more or less ragged.
The lead oxide or other pasty material laid on both sides of the plate and
penetrating the holes is held firmly in the spaces between the tubular projections and
in the holes. Instead of forming the holes and tubular projections by punching they
may be formed by casting the plate in a suitable mould. The faces of the plate
between the holes and projections may be roughened or indented to give a better
hold to the material laid upon them, and the holes and tubular projections, instead
of being circular, may be of other forms, triangular, rectangular or polygonal.
Having thus particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
A plate for secondary or other voltaic batteries enclosed within a border flange, and
having through it rows of holes with projections surrounding the holes on both sides
of the plate substantially as described.
Dated this 7th day of July 1890.
ABEL & IMRAY,
Agents for the Applicant.