Improvements in Elements for Secondary Batteries.
Year: 1895

page_text: Date of Application, 15th June, 1895
Complete Specification Left, 11th Mar., 1896-Accepted, 11th Apr., 1896
Improvements in Elements for Secondary Batteries.
JOB THOMAS NIBLETT 20 Devonshire Road Greenwich S.E. Electrical'
Engineer do bereby declare the nature of this invention to be as follows:-
This invention relates to an improved method of making plates or elements
suitable for use in secondary batteries whose elements are required to be of small
weight, of considerable mechanical strength, and also to be capable of withstanding
high rates of charge and discharge.
According to this invention the plates or elements are constructed with a series
of protruding ridges or ribs either on one or both sides of them. The ridges or
ribs may he run in any direction on the plates, but in any case they are so arranged
that they form chambers or receptacles on the plate for the reception of the active
material. The plates may be made of lead or any other suitable material, and
these may be cast in a mould, struck up in a die, or they may be built up in pieces.
The chambers formed by the ridges or ribs may be any desired depth, and to more
effectually hold the active material in position the outer edges of the ridges or ribs
may be burred over or spread out so as to more effectually key the active material.
in. The burring or spreading out operation may be produced by subjecting the
plate to a burnishing operation such as may be obtained by a revolving disc
pressing on the ridges, passing it through rotating rollers, or it may be produced
by hammering or pressing the plate in any manner that may produce the desired.
burred-over or dove-tailed shape. The active material may consist of any of the
well known lead salts or such other suitable material, and this may be pressed into
the chambers or receptacles formed on the plates, either in its dry condition, or it
may be pasted in in the ordinary maunér.
Dated this 15th day of June 1895.
Improvements in Elements for Secondary Batteries.
I, JOB THOMAS NIBLETT, of 20 Devonshire Road, Greenwich, in the County
of Kent, 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 :-
This invention relates to an improved manufacture of plates, or elements, for
secondary batteries, wherein the plates, or elements, are required to be of small
weight, of considerable mechanical strength, and also to be capable of withstanding
high rates of charge and discharge.
According to this invention the plates, or elements, are constructed with a series
of protruding ridges, or ribs, either on one, or on both, of the sides of the supports
thereof, as illustrated in plan in Figure 1, and in transverse section in Figure 2, of
the accompanying drawing as applied to a portion of a plate, or element. The
body portion is marked a, and the ridges, or ribs, are marked b. The said ridges,
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page_text: or ribs, b, may be disposed in any direction on the plates, but, in any case, they
are so arranged that they form chambers, or receptacles, c, for the reception of the
active material, or material to be rendered active. The said supports may be
made of lead, or lead alloy, or any other suitable conductive material, which may
be cast in a mould, or struck up by dies, or they may be built up in pieces: for
example, by making the part a separately, of any suitable material, and securing
the ridges, ribs, or projections, thereto by pins passed through them as shewn at d
in Figure 4. The said ridges, ribs, or projections b, may, in this case, be in separate
strips, or pieces, or be cast, or formed, as grids. The chambers c, formed by the
ridges, or ribs, may be of any desired depth and form and, to more effectually hold
the active material, in position the outer edges of the ridges, or ribs, may be burred
over, or spread out, as shewn at 62, in Figure 3, so as to more effectually key in the
active material, or material to be rendered active. The burring, or spreading out,
operation may be produced by subjecting the support to a burnishing operation
such as may be obtained by a revolving disc pressing on the ridges, or ribs, or by
passing the support through rotating rollers, or it may be produced by hammering,
or pressing, the plate in any manner that will produce the desired burred-over, or
dovetailed, form. The active material, or material to be rendered active, may
consist of any of the well known lead salts, or other suitable material, and. this
may be pressed into the chambers, or receptacles, c, either in its dry condition, or
it may be pasted in, in the ordinary manner. The said material is shewn in
place in Figure 3. There may be openings (as at a², Figure 3) in the part a,
through which openings the active material will pass and thus be kept more
securely in place.
Having now described the nature of my invention and the manner in which it
may be performed, I declare that what I claim is :-
1. Secondary battery plates, or elements, constructed of a portion such as a, with
ridges, or ribs, cast, or formed thereon, or secured thereto, on one side, or on both
sides; substantially as herein before described and illustrated.
2. Secondary battery plates, or elements, constructed of a portion such as a,
with ridges, or ribs, cast, or formed, thereon, or secured thereto, on one side, or
on both sides, and with burred, or spread out, edges on the said ridges, or ribs,
substantially as herein before described and illustrated.
Dated this 11th day of March 1896.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.