Improvements in Electric Storage or Secondary Batteries.
Year: 1894

page_text: PROVISIONAL SPECIFICATION.
Improvements in Electric Storage or Secondary Batteries.
I JOHN EVELYN LIARDET of 16 Hyde Park Gate in the County of London,
Engineer, do hereby declare the nature of this invention to be as follows:-
According to this invention I use to construct the positive pole of my storage
battery either a hollow tube of lead or other suitable material, or I may use thin
sheets of lead fitted or built in a composite form such tube or sheets are perforated
so as to allow for the entrance and exit of the fluid from the cell, in order to
complete this positive pole I fill in the said tube or cell, shot, granulated lead, or
lead clippings, or filings, well mixed up with peroxide of lead, and in this pole [
place vertically a rod or bar of lead or other suitable material to which I attach the
usual connection. I then press or ram the whole of the aforesaid charge or com-
pound into as solid a mass as the outer lead casing will admit of without bursting
in order to secure a lasting positive pole that will not buckle or throw off peroxide
of lead or.sediment, so calculated to impair the usefulness of storage cells; and in
the event of any such throwing off, the sediments will fall to the bottom of the
pole cell and become mixed with the already described compound and thus
strengthen instead of weaken the accumulator.
I may employ plain thin perforated plates for the negative pole, that is to say,
one on each side of the positive pole or I may use carbon or other suitable
compounds or metals and peroxide of lead paste also with and for my negative
poles.
Dated this 2nd day of August 1894.
BROWNE & Co.,
Agents for the Applicant.
I JOHN EVELYN LIARDET of 16 Hyde Park Gate in the County of London,
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 :-
According to this invention I use to construct the positive pole or element of my
storage battery either a hollow tube of lead or other suitable material, or I may use
thiu sbeets of lead fitted or built in a composite form such tube or sheets are
perforated so as to allow for the entrance and exit of the fluid from the cell, and in
order to complete this positive pole or element I fill in the said tube or casing, shot,
granulated lead, or lead chippings, or filings, well mixed up with peroxide of lead,
and in this pole or element 1 place vertically a rod or bar of lead or other suitable
material to which I make the usual connection. I then press or ram the whole of the
aforesaid charge or compound into as solid a mass as the outer lead casing will
admit of without bursting, in order to secure a lasting positive pole or olement that
will not buckle or throw off peroxide of lead sediment so calculated to impair the
usefulness of storage cells; and in the event of such throwing off the sediment will
D011

page_text: fall to the bottom of the pole and become mixed with the already described
compound and thus strengthen instead of weaken the accumulator.
I may employ plates for the negative pole or element that is to say one on
each side of the positive pole or element or I may use carbon or other suitable
compounds or metals and peroxide of lead paste also with and for my negative pole
or element.
And in order that my said invention may be better understood will now
proceed to describe the same with reference to the accompanying sheet of drawings
in which
Fig. 1. shews section of a portion of a battery with the negative and positive
poles or elements constructed according to my said invention.
Fig. 2 shews an enlarged view of a section of one of the poles or elements
detached from the battery.
The same letters denote the same parts in both views.
The positive poles or elements consist of two lead plates aa which I prefer to
perforate as shewn these plates are joined together so as to form a case open at
top. prefer to corrugate the aforesaid plates inside as shewn on the drawing at b.
The plates a a forming the casing I fill in with shot, granulated lead, or lead
chippings or filings intimately mixed up with peroxide of lead shewn at c and this
charge or compound I ram or press into as solid a mass as the outer lead casing
formed by the plates a a will adinit of without bursting. Instead of having the
poles or elements formed of two plates a a I may have a lead tube or tubes coated
internally and externally with peroxide of lead.
I may employ instead of the aforesaid double plates, casings or tubes thin
perforated plates for the negative pole or element, such plates being entirely coated
with peroxide of lead, one of these plates being placed ou each side of the positive
pole or element or I may use carbon or suitable compounds of metal and peroxide
of lead for the negative pole or element.
I propose to employ any number of elements in my battery connected up either
in series or parallel
as may be required for the purposes for which the battery is to
be used. I have shewn in Fig. 1 two negative elements e e and one positive
element f.
By constructing the poles or elements of secondary battery as herein described
I obtain a much larger surface than is the case with poles or elements as at present
constructed.
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.) In a secondary battery making the positive poles or elements of an outer
casing of lead coated internally and externally with peroxide of lead, the said casing
being filled with shot, granulated lead, or lead chippings or filings well mixed up
with peroxide of lead substantially as herein described.
(2.) The improvements in secondary batteries substantially as herein before
described and represented on the accompanying sheet of drawings.
Dated this 2nd day of
1805
BROWNE & Co.,
9, Warwick Court, Gray's Inn, London, W.C.,
Agents for the Applicant.
BROWNE & Co.,
9, Warwick Court, Gray's Inn, London, W.C.,
Agents for the Applicant.