Improvements in Electrical Accumulators or Storage Batteries.
Year: 1891

page_text: Date of Application, 4th May, 1891
Complete Specification Left, 2nd Feb., 1892-Accepted, 5th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Electrical Accumulators or Storage Batteries.
I, CHAIMSONOVITZ PROSPER ELIESON of 75, Edith Road, West Kensington,
in the County of London, Electrical Engineer, do hereby declare the nature of this
invention to be as follows:-
My invention relates to electrical accumulators or storage batteries.
Electrical accumulators or storage batteries as at present generally used have a
number of plates which deteriorate so rapidly as to become comparatively useless
in a short time and this is especially the case with accumulators used for electric
traction. The principal reasons of such short life are the buckling of the positive
plates and their rapid disintegration chiefly owing to the gradual growth or expan-
sion of the said plates and the molecular increase of the active material and to the
fact that such growth or enlargement is usually checked by the body or frame
which holds the active material whereby the plates in their forcible expansion will
assume fanciful shapes or become warped with the result that the uniformity of the
internal construction is in a short time destroyed as is also the uniformity of the
internal resistance between the plates.
The object of my invention is to obviate these defects while securing a large
amount of surface for storage capacity without a number of plates and with a
minimum of weight and to this end I provide electrodes, each of which is built up
of a series of corrugated envelopes of cylindrical or other desirable shape com-
posed of thin lead or other suitable metal and preferably perforated. These
envelopes are placed one within the other and the corrugations are so arranged
that those of one cylinder cross or are at an angle to those of the adjacent cylinders.
In practice I find it advantageous to corrugate one cylinder longitudinally and the
other circumferentially.
In using my improved electrodes one placed within the other, suitable means
being provided for preventing them from coming into contact.
It is to be understood that instead of using corrugated envelopes I may use
envelopes having ribs upon their surfaces or otherwise suitably formed.
Dated the 4th day of May 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Electrical Accumulators or Storage Batteries.
I, CHAIMSONOVITZ PROSPER ELIESON, of 75, Edith Road, West Kensington,
in the County of London, 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 relates to electrical accumulators or storage batteries.
Electrical accumulators or storage batteries as at present generally used have a
number of plates which deteriorate so rapidly as to become comparatively useless
in a short time, and this is especially the case with accumulators used for
electric traction. The principal reasons of such short life are the buckling of
the positive plates and their rapid disintegration chiefly owing to the gradual
growth or expansion of the said plates and the molecular increase of the active
material, and to the fact that such growth or enlargement is usually checked by
the body or frame which holds the active material, whereby the plates in their

page_text: forcible expansion will assume fanciful shapes or become warped with the result
that the said plates are nearer at some points than others, whereby the uniformity
of the internal construction is in a short time destroyed as is also the uniformity of
the internal resistance between the plates.
The object of my invention is to obviate these defects, and to this end I provide
electrodes, each of which is advantageously built up of a series of corrugated
envelopes of cylindrical or other desirable shape composed of thin lead or other
suitable metal and preferably perforated. These envelopes are placed one within
the other and the corrugations are so arranged that those of one cylinder cross or
are at an angle to those of the. adjacent cylinders.
In using my improved electrodes one is placed within the other, suitable means
being provided for preventing them from coming into contact.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawings, in which :-
Figure 1 is a vertical section of a pair of accumulator electrodes constructed
according to my invention; and,
Figure 2 is a plan of the same:
Figures 3 and 4 are an elevation and an elevation partly in section of the
electrodes separated:
Figures 5 and 6 are a vertical section and a sectional plan illustrating a modifica-
tion of my invention.
a, a, a, a, a indicate a series of corrugated and perforated cylinders forming
the positive electrode, and b, 61, 62, 63, 64 are the cylinders of the negative electrode
which are similarly corrugated and perforated. In the drawings I have shewn
each electrode as composed of five cylinders (although a greater or less number
may be used) which cylinders are alternately corrugated longitudinally and cir-
cumferentially, as shewn most clearly in Figure 1, and fitted one within the other
so as to be in contact.
In order to prevent the two electrodes from coming into contact and thereby
forming a short circuit I advantageously place india-rubber strips c between the
electrodes, as shewn in the drawings.
d, e are contact-plates which form metallic connection between the various
cylinders of the positive and negative electrodes respectively.
Although I have described the cylinders as being corrugated longitudinally and
circumferentially it is obvious that the corrugations could extend in a helical
direction around the cylinders, provided the corrugations of one cylinder cross or
are at an angle to those of the other cylinder. Also 1 sometimes form the cylinders
with small flanges instead of with corrugations. As shewn in Figures 5 and 6,
these flanges which are indicated by the letter fare arranged longitudinally and
circumferentially on alternate cylinders and on one side of each cylinder only but
it is obvious that the said flanges may be formed upon both sides of each cylinder
and arranged in any desirable direction.
Some of the advantages of my invention are that, owing to the very large
surface obtained by the use of a series of concentric cylinders, I secure a large
amount of storage capacity; that the method of construction affords great strength
whereby I am enabled to use relatively thin metal for the cylinders, thereby greatly
reducing the weight of an accumulator of given storage capacity as compared
with an accumulator of the same capacity as herein before constructed; and that
the grooves of the corrugations afford ample space for the molecular increase of
the cylinders without causing buckling or bending, whereby the cost of maintenance
is very low as compared with that of other accumulators.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
-
1. An electrical accumulator or storage battery, built up of a series of
corrugated and perforated sheets of load the commentions of mah

page_text: juxtaposed at an angle relatively to those of the adjacent sheet one upon
another, in order to provide a continuous surface, and having a number of such
juxtaposed sheets grouped together face to face or parallel with each other to form
one electrode.
2. An electrical accumulator or storage battery, each electrode of which is
built up of a series of juxtaposed corrugated metal cylinders, united together by
a contact piece as described, the corrugations of each of these several cylinders
composing such electrode being at an angle to those of the next adjacent cylinder
or cylinders.
3. An electrical accumulator or storage battery, the electrodes of which are
severally composed of a series of metal endless tubes or cylinders fitted one within
the other and provided with flanges, and united by a contact-piece, all substantially
as shewn and described.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.