Improvements in Accumulator Batteries.
Year: 1896

page_text: Date of Application, 25th July, 1890
Complete Specification Left 26th Apr. 1897-Accepted 29th May 1897
Date of Application, 2
1890
Complete Specification Left 26th Apr., 1897-Accepted 29th May 1897
PROVISIONAL SPECIFICATION.
Improvements in Accumulator Batteries.
We, JOHN VAUGHAN-SHERRIN Electrical Engineer and HENRIETTA HELENA
SHERRIN Wife of the said John Vaughan-Sherrin both of 3 Codrington Villas
Ramsgate in the County of Kent do hereby declare the nature of this invention to
be as follows:-
According to these improvements each element is in the form of a bar and
consists of an inner solid or tubular core by preference of ebonite vulcauite celluloid
or other suitable nonconducting material, a lead conductor strip wound helically
around the core, and an outer strip wound helically around the lead strip but in the
opposite direction, this outer strip being of cbonite, celluloid, vulcanite or other
suitable nonconducting material. The active material is smeared into the
interstices of the bar thus formed and then compressed which latter may be done by
repeatedly rolling the bar upon a flat board. The bar may be circular square or
rectangular in cross section. The outer ebonite helix may be wound on readily
while under the softening influence of a jet of steam. The core may be a rod or
tube of aluminium upon which is placed a thin tube of rubber or a number of rings
of rubber or vulcanite or the like. The lead conductor may be gilded or we may
use a conductor or conductors of platinum or other suitable material.
also use a conductor composed of several crimped strips. Or we omit the core and
use a central helical or crimped conductor strip instead. A number of positive
elements and negative elements of this kind are combined to make up a battery.
Or a number of such positive elements or negative elements may be combined
respectively with negative elements or positive elements of any known plate or bar
or other form. Accumulators made with the bars described are capable of a heavy
discharge without a sensible drop in the voltage. The active material is well
distributed throughout while presenting a comparatively large surface to the action
of the electrolyte; it is also well keyed together and not liable to destructive
buckling, as a sufficient amount of longitudinal expansion is rendered possible; the
lead conductor owing to its helical form presents a comparatively large surface in
contact with the active material in all its parts; and its helical part is not in direct
contact with the electrolyte.
Dated this 25th day of July 1896.
JENSEN & SON,
77 Chancery Lane, Loudon, W.C., Patent Agents.
Improvements in Accumulator Batteries.
We, JOHN VAUGHAN-SHERRIN Electrical Engineer and HENRIETTA HELENA
SHERRIN Wife of the said John Vaughan-Sherrin both of 3 Codrington Villas
Ramsgate in the County of Kent 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 these improvements each element is in the form of a bar and
consists of an inner solid or tubular core by preference of ebonite vulcauite celluloid

page_text: or other suitable nonconducting material a lead conductor strip or strips or wires
wound helically around the core and an outer strip wound helically around the lead
strip or strips but in the opposite direction this outer strip being of ebonite
celluloid vulcanite or other suitable nonconducting material. The active material
is deposited into the interstices of the bar thus formed and then compressed which
latter in the case of a round bar may be done by repeatedly rolling the bar upon a
flat board. If the bar is square or rectangular in cross section it is placed in an
open mould and the active material is pressed in with a trowel. The outer cbonite
helix may be wound on readily while under the softening influence of a jet of
steam. Or we may form the helix by making a helical cut in an ebonite tube
rotated in a lathe, the part so formed being then stretched as required.
Fig. 1 is a side view and Fig. 2 a plan section of such an element. The round
core A is of ebonite celluloid vulcanite or other suitable nonconducting material
around which are helically wound three lead wires B which are twisted together or
otherwise united at the top. Around these wires is helically wound in the opposite
direction a strip C of ebonite or other suitable nonconducting material and the
interstices between the wires B and the strip C contain the active material flush
with the outside of the strip C. The core A may as shown in Fig. 3 be hollow
instead of solid and may be provided with perforations to afford interior access of
the electrolyte and it may be of square or rectangular section as shown in Fig. 4
and 5 instead of round.
We may place on the core a thin tube of rubber or a number of rings of rubber,
vulcanite or the like. A rubber ring D may be placed around the element at top
and bottom to insulate it from its adjoining elements having active material of
opposite polarity or we may lap each element round helically with asbestos yarn or
tape; the same means of insulation may be used for the bars hereinafter described
and shown.
Fig. 6 is a side view and Fig. 7 a plan section of an element having a core A of
round vulcanite (or of any other of the forms just described). Upon the core is
tied by means of thin lead wire four strips B of crimped lead strips, and around
these is wound the ebonite strip C.
Fig. 8 is a side view and Fig. 9 a plan section of another form of element in
which the vulcanite core A, has wound helically round it curled lead strips B and
around these the ebonite strip C.
Fig. 10 is a side view and Fig. 11 plan section of another form in which the
non-conducting core is omitted and the conductor B is made of section doubled
The conductor
up so as to form section, round which the ebonite C is wound.
may be provided with perforations and made crinkled or crimped.
Fig. 12 is a side view and Fig. 13 plan section of another form in which a cross,
shaped helically twisted conductor B is used.
Although we have only shown a few samples of our invention it must be
understood that we may employ the helically wound strip of ebonite C as
surrounding any suitable form of lead conductor with or without nonconducting
corc.
Elements of the kind described may be connected by horizontal conductors or a
conducting frame or if arranged horizontally may be connected by vertical
conductors or a conducting frame.
A number of positive elements and negative elements of this kind are combiued
to make up a battery. Or a number of such positive elements or negative elements
may be combined respectively with negative elements or positive elements of any
known plate, bar or other form. Accumulators made with the bars described are
capable of a heavy discharge without sensible drop in the voltage. The active
material is well distributed throughout while presenting a comparatively large
surface to the action of the electrolyte; it is also well keyed together and not
liable to destructive buckling as a sufficient amount of longitudinal expansion is
rendered possible; and the lead conductor owing to its form prescuts a com
paratively large surface in contact with the active material in all its parts while

page_text: not in contact with the electrolyte. In order to increase the feathering action for
longitudinal expansion we may in the forms illustrated by Figs. 1 to 9 introduce
between core A and the conductors B or between the coils of the latter a thin
feathering helical closely coiled strip of ebonite or other springy nonconducting
material which is fastened to the core at top or bottom the same as the outer
strip C. This inner strip serves the same purpose as the sleeve or rings of rubber,
vulcanite or the like described with reference to Figs. 1 to 5 but also applicable to
the forms described with reference to Figs. 6 to 9.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. Secondary battery element consisting mainly of a suitable core of non-
conducting material, a lead conductor wound helically around the core, a strip of
insulating material wound helically round the conductor in the opposite direction
and active material filling the interstices between the parts named, substantially as
and for the purposes set forth.
2. Secondary battery element consisting mainly of a suitable core of non-
conducting material, a lead conductor around the core formed of crimped strips, a
strip of non-conducting material wound helically round the conductor, and active
material filling the interstices between the parts, substantially as and for the
purposes set forth.
3. Secondary battery element consisting mainly of a cruciform straight or
twisted lead conductor, a strip of non-conducting material wound helically round
the conductor, and active material filling the interstices between the parts,
substantially as and for the purposes set forth.
4. In secondary battery elements as firstly and secondly claimed the application
and use of an inner helical strip of springy non-conducting material between the
core and the conductors or between the coils of the latter substantially as and for
the purpose set forth.
Deted this Thankreich J of Amil 1907
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.