IMPROVEMENTS IN SECONDARY RATORDIDO "
Year: 1882

page_text: LETTERS PATENT to Alfred Tribe of Denbigh Road Notting Hill in the
County of Middlesex for an Invention of "IMPROVEMENTS IN SECONDARY
RATORDIDO "
PROVISIONAL SPECIFICATION left by the said Alfred Tribe at the Office
of the Commissioners of Patents on the 24th November 1882.
"
ALFRED TRIBE of Denbigh Road Notting Hill in the County of Middlesex
IMPROVEMENTS IN SECONDARY BATTERIES
"
This Invention relates to Improvements in the construction of the positive plates
or element of Secondary Batteries.
In carrying out my Invention, I proceed according to one or other of the
following methods:-
A rectangular frame, the same by preference being grooved may be employed
having three sides of prepared wood, slate, porcelain or any non-conducting
substance not easily acted upon by dilute sulphuric acid. The fourth side is
completed by the employment of a suitable conductor, preferably of lead, the same
being allowed to project beyond the liquid Or the frame may be made entirely
of any suitable conductor, but I prefer lead-Or the frame may be made entirely
of prepared wood, porcelain, or slate, a suitable conductor preferably of lead being
placed within the groove, and passing round the frame, or simply down one or both
sides either partially or wholly
Into or upon one or other of these, or some other equivalent form of frame,
I place peroxide of lead or minium or peroxide of lead or minium in admixture
with compounds of lead such for example as the oxides of lead or the sulphate of
lead or mixtures of the same. The peroxide of lead or minium, or the mixture of
peroxide of lead with oxide of lead or sulphate of lead or with mixtures of the
same is or may be brought to the desired consistency by the employment either of
water or, by preference, of dilute sulphuric acid, and if necessary be allowed to
remain in the retaining frame until the mass has consolidated. Or a core
consisting of compressed peroxide of lead, minium or of mixtures of the same,
either alone or in conjunction with monoxide of lead or with sulphate of lead
Prine AdI

page_text: may be fitted into the centre of the retaining frame and to which I apply
a mixture of a suitable consistency consisting of peroxide of lead or minium or
peroxide of lead or minium in admixture with other compounds of lead such as
sulphate of lead or the oxides of lead or mixtures of the same in conjunction either
with water or with dilute sulphuric acid.
The plate plates or element prepared by any one of the hereinbefore described
methods, and of any convenient shape other than that mentioned is or may be
ensheathed or encased in any suitable porous supporting wrapper, such as felt
flannel, calico, asbestos, cloth, etc:-the plate thus encased is then reduced to the
metallic condition electrolytically as is well understood. When the reduction is
practically completed, the plate, plates or element so obtained is or are then
capable of being employed in Secondary Batteries as positive elements in
conjunction with a negative element or elements such for example as described by
me in my Specification dated 1st April 1882 Number 1587-Or the plate plates or
element may be employed as the positive element or elements without a
supporting wrapper.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alfred Tribe in the Great Seal Patent Office on the 16th
May 1883.
ALFRED TRIBE of Denbigh Road Notting Hill in the County of Middlesex
IMPROVEMENTS IN SECONDARY BATTERIES
My Invention relates to Improvements in the construction of the positive plates
or element of Secondary Batteries.
In carrying my said Invention into effect I proceed according to one or other of
the following methods.
A rectangular frame the same by preference being grooved may be employed
having three sides of prepared wood slate porcelain or any non-conducting
substance not easily acted upon by dilute sulphuric acid. The fourth side is
completed by the employment of a suitable conductor preferably of lead the same
being allowed to project beyond the liquid. Or the frame may be made entirely of
any suitable conductor but prefer lead Or the frame may be made entirely of
wood porcelain or slate a suitable conductor preferably of lead being placed within
the groove and passing round the frame or simply down one or both sides either
partially or wholly.
Into or upon one or other of these or some other equivalent form of frame
I place peroxide of lead or minium or peroxide of lead or minium in admixture
with compounds of lead such for example as the oxides of lead or the sulphate of
lead or mixtures of the same. The peroxide of lead or minium or the mixture of
peroxide of lead with oxide of lead or sulphate of lead or with mixtures of the
Bame is or may be brought to the desired consistency by the employment either of
water or by preference of dilute sulphuric acid and if necessary be allowed to
remain in the retaining frame until the mass has consolidated
Or a core
consisting of compressed peroxide of lead minium or of mixture of the same
either alone or in conjunction with monoxide of lead or with sulphate of lead may
be fitted into the centre of the retaining frame to which I apply a mixture of a
suitable consistency consisting of peroxide of lead or minium or peroxide of lead or
minium in admixture with other compounds of lead such as sulphate of lead or the
oxides of lead or mixtures of the same in conjunction either with water or with
dilute sulphuric acid.
The plate plates or element prepared by any one of the herein before described
methods and of any convenient shape (which may be other than that mentioned) is
or may be ensheathed or encased in any suitable porous supporting wrapper such
as felt, flannel, calico, asbestos-cloth, or the like, and the plate thus encased is then
reduced to the metallic condition electrolytically as is well understood. When the
reduction is practically completed the plate plates or element so obtained is or are
then capable of being employed in Secondary Batteries as positive elements in
conjunction with a negative element or elements such for example as described in
the Specification of Letters Patent Nº 1587 dated the 1 April A.D. 1882. The
plate plates or element may be employed as the positive element or elements
without a supporting wrapper.
Having now described and particularly ascertained the nature of my said
Invention and the manner in which the same is or may be used or carried into
effect I would observe in conclusion that what I consider to be novel and original

page_text: and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters Patent is:-
A positive element consisting of lead in combination with a frame of lead or in
combination with a frame of non-conducting material and a conductor of lead
constructed substantially as herein before described.
In witness whereof I the said Alfred Tribe have to this my Specification set
my hand and seal this fifteenth day of May One thousand eight hundred
and eighty three.
ALFRED TRIBE (L.S.)