IMPROVEMENTS IN ACCUMULATORS OR SECONDARY BATTERIES & com- muni
Year: 1882

page_text: LETTERS PATENT to Walter Alfred Barlow of 6 St Paul's Churchyard in
دو
the city of London Patent Agent and Engineer for an Invention of
"IMPROVEMENTS IN ACCUMULATORS OR SECONDARY BATTERIES & com-
munication to me by Messieurs L Encausse and Canésie persons resident
at Paris in the Republic of France
PROVISIONAL SPECIFICATION left by the said Walter Alfred Barlow at
the Office of the Commissioners of Patents on the 4th December 1882.
WALTER ALFRED BARLOW of 6 St Pauls Churchyard in the city of London
Patent Agent and Engineer "IMPROVEMENTS IN ACCUMULATORS OR SECONDARY
BATTERIES a communication to me by Messieurs L Encausse and Canesie persons
resident at Paris in the Republic of France
"
This Invention relates to improvements in accumulators or secondary batteries
the object being to compose such accumulators or secondary batteries of specially
formed distinct elements which may, at will, be arranged for intensity or quantity,
and also that they may be isolated one from the other for obtaining separate or
divided currents.
In constructing the elements of these accumulators a thin sheet of lead is rolled
around, so as to have great length of spiral and in the centre of this roll is arranged
a strip of lead which extends out at each end of the roll for a certain distance and
this roll is next coiled or wound around by properly insulated wire and on to the
two ends of the spiral are fixed two rings of india rubber.
Upon this body there is rolled a second sheet of thin lead which will cover the
coil and the india rubber end rings and in the last turn of the second roll of lead
there is placed a strip of lead extending out at each end from the sheet lead roll
and upon said lead roll a second coil or winding of insulated wire is placed and
the element is complete. It is to be remarked here that plain sheet lead is not
employed the sheets are covered with an insulating varnish and the surfaces of
the spirals are not in contact the one with the other.
The so constructed elements are mounted between two end plates or rails
between which any required number of elements will be disposed or arranged.

page_text: These said plates are composed of two parts upper and lower between the adjacent
faces of which parts are placed sheets of flannel.
The electrodes in the lower of the end plates are placed directly and indiscri-
minately upon the sheets of flannel and are not in direct contact one with another
but in the case of the upper end plate the electrodes are arranged for tension, that
is to say connected up in opposite poles but in contact with the flannel
The electrodes in the said upper end plate are divided in two and form two
distinct circuits having at each of their extremities contact terminals.
The upper and lower plates or rails carrying the elements are held together
by bolts or otherwise conveniently. The flannels are kept wet with accidulated
water Upon the upper end plate are fixed four terminals corresponding to the
two circuits two terminals of the same circuit serving for the charging of the
accumulator and the two others for the discharge. By proper connections there
may be formed as many of these small circuits as may be desired in the circuit
of discharge. Thus the current entering the apparatus may be divided as desired.
This apparatus has also the advantage of redressing the currents and to give out
a positive continuous current when fed by alternating current. To keep the
flannel wet holes are made in the end plates so as to hold a small quantity of
liquid.
The lead of the elements may be replaced by any other analagous metal but lead
has been found to answer best.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Walter Alfred Barlow in the Great Seal Patent Office on the
4th June 1883.
WALTER ALFRED BARLOW of 6 St Pauls Churchyard in the city of London
Patent Agent and Engineer "IMPROVEMENTS IN ACCUMULATORS OR SECONDARY
BATTERIES a communication to me by Messrs L. Encausse and Canèsie persons
resident at Paris in the republic of France
This Invention relates to improvements in accumulators or secondary batteries the
object being to compose such accumulators or secondary batteries of specially
formed distinct elements which may at will be arranged for intensity or quantity
and also that they may be isolated one from the other for obtaining separate or
divided currents.
In order that the said invention may be well understood there is annexed hereto
a sheet of illustrative drawings wherein :-
Fig. 1 represents one of the elements unmounted.
Fig. 2 is a section of one of the elements showing the disposition of the electrodes
and the plates for mounting sectionned M and N.
Fig. 3 shows the arrangement of contact pieces above the plate M and the
terminals a b also those c, d which serve to empty the apparatus.
Fig. 4. represents the particular arrangement of mounting between the two
plates.
In constructing the elements of these accumulators a thin sheet of lead is rolled
around so as to have great length of spiral and in the centre of this roll A is
arranged a strip of lead B which extends out at each end of the roll for a certain
distance and this roll is next coiled or wound around by properly insulated wire as
at C and on to the two ends of the spiral are fixed two rings of india rubber D.
Upon this body there is rolled a second sheet of thin lead E which will cover the
coil and the india rubber end rings and in the last turn of this second roll of lead E
there is placed a strip of lead G extending out at each end from the sheet lead roll
and upon said lead roll a second coil or winding of insulated wire H is placed and
the element is complete.
It is to be remarked here that plain sheet lead is not employed; the sheets are
covered with an insulating varnish and the surfaces of the spirals are not in contact
the one with the other.
The so constructed elements are mounted between two end plates or rails M, N,
between which any required number of elements may be disposed or arranged as
desired. These said plates M, N are composed of two parts upper m, m², and
lower n, n' between the adjacent faces of which parts are placed sheets of flannel.
The electrodes in the lower of the end plates N are placed directly and indis-
criminately upon the sheets of flannel and are not in direct contact one with another
but in the case of the upper end plate the electrodes are arranged for tension that is
to say connected up in opposite poles but in contact with the flannel.
The electrodes in the said upper end plate M are divided in two and form two
distinct circuits and having at each of their extremities contact terminals.
The upper and lower plates or rails M, N carrying the elements are held together
by bolts K or in any other convenient manner. The flannels are kept wet with
acidulated water
Upon the upper end plate M are fixed four terminals corresponding to the two
circuits, two terminals of the same circuit servin for the charging of the accumulator
and the two others for the discharge.

page_text: By proper connections there may be formed as many of these small circuits as
may be desired in the circuit of discharge Thus the current entering the apparatus
may be divided as desired.
This apparatus has also the advantage of redressing the currents and to give out
a positive continuous current when fed by an alternating current.
To keep the flannel wet holes P (see Fig 2) are made in the end plates so as to
hold a small quantity of liquid.
The lead of the elements may be replaced by any other analogous metal but lead
has been found to answer best.
Having now described the nature and particulars of the said Invention I claim :-
Firstly. The improvements in accumulators or secondary batteries as herein
described in reference to and as shown by the respective figures of the accompanying
sheet of drawings.
Secondly. In accumulators or secondary batteries the special construction and
arrangement of parts in combination with the isolation of the surfaces of the
elements by a coating or covering of varnish or other similar material as and for
the purpose herein set forth.
Thirdly. In accumulators or secondary batteries the division of the currents and
the means for redressing them as herein set forth and as described-in-reference to
and as shown by the accompanying sheet of illustrative drawings
In witness whereof I the said Walter Alfred Barlow have hereunto set my
hand and seal this thirty first day of May in the year of our Lord one
thousand eight hundred and eighty three
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