Improvements in and relating to the Manufacture of Plates for Electric Accumulators.
Year: 1891

page_text: Date of Application, 27th June, 1891
Complete Specification Left, 28th Mar., 1892-Accepted, 30th Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Manufacture of Plates for
Electric Accumulators.
I, CONSTANT ROUSSEAU of 113, Boulevard Sébastopol, Paris in the Republic
of France, do,hereby declare the nature of this invention to be as follows:-
My invention relates to the manufacture of the plates for electric accumulators.
According to my invention the plate of lead is cut out and provided with
openings, which may be round, oblong or of any other suitable form. The frame
thus formed may be provided round the said openings with recessed parts for
obtaining a better adhesion of the paste employed.
The material designed to be reduced to spongy lead and to peroxide, such as
sulphate of lead salts of lead, oxide of lead, or carbonate of lead, but preferably
sulphate of lead, is diluted with chloride of sodium for preparing the said paste.
This paste is then applied to the frame above mentioned in such a manner that
there shall be as much below as above, and that the frame shall be concealed in
the paste, the thickness of the coating formed on both sides being varied according
to requirements.
The sulphate of lead is first dried, reduced in a bath of salt water, then passed
between rollers and put in the circuit in order to transform it into spongy lead for
the negative plates and into peroxide for the positive plates.
I add to the paste, when diluting it as also in the case of other salts or oxides of
lead, hair cut to the length of about one centimetre, with the object of giving it a
perfect homogeneity, the perforated frame performing merely the part of an interior
support.
Camel's hair, goat's hair or any other filaments of a similar nature may be
employed.
By manufacturing the plates for accumulators in this manner their capacity can
be augmented whilst their weight is considerably diminished.
The surfaces of the frames may be either plane. smooth or rough.
HASELTINE, LAKE & Co.,
- 45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to the Manufacture of Plates for
Electric Accumulators.
I, CONSTANT ROUSSEAU, of 113 Boulevard Sébastopol, Paris, in the Republic-
of France, 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 the manufacture of plates for electric accumulators.
According to my invention the plate of lead is cut out and provided with
openings, which may be round, oblong or of any other suitable form.
In the accompanying drawing
Figure 1 is a front elevation and

page_text: The plate constructed according to my invention consists of a body portion B
provided with rectangular openings A. as shown in Figure 1 or with circular
openings C as in Figure 3. The frame thus formed may be provided round the
said openings with recessed parts for obtaining a better adhesion of the paste
employed.
The material designed to be reduced to spongy lead and to peroxide, such as
sulphate of lead, salts of lead, oxide of lead or carbonate of lead, but preferably
sulphate of lead, is diluted with chloride of sodium for preparing the said paste.
This paste is then applied to the frame above mentioned in such a manner that
there shall be as much below as above, and that the frame shall be concealed in the
paste, the thickness of the coating formed on both sides being varied according to
requirements.
The sulphate of lead is first dried, reduced in a bath of salt water, then pressed
between rollers and put in the circuit in order to transform it into spongy lead for
the negative plates and into peroxide for the positive plates.
add to the paste, when diluting it, as also in the case of all other salts or oxides
of lead, hair cut to the length of about one centimetre, with the object of giving it
a perfect homogeneity, the perforated frame performing merely the part of an
interior support.
Camel's hair, goat's hair or any other filaments of a similar nature may be
employed.
By manufacturing the plates for accumulators in this manner their capacity can
be augmented whilst their weight is considerably diminished.
The surfaces of the frames may be either plane, smooth or rough.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
First. The incorporation with a paste of sulphate of lead or other salts or
oxides of lead, designed to form the negative plates of spongy lead and the positiv.
plates of peroxide of lead of cut horse or other hair and similar filaments.
Second. The manufacture of accumulator plates from plates of lead which are
cut out to form an open frame work the openings being of any suitable form,
adapted to receive in the said openings as well as on the two faces a paste consisting
of sulphate of lead or other salt or oxide of lead diluted with chloride of sodium to
which is added cut horse or other hair, as hereinbefore described.
Dated this 28th day of March 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.