Improvements in the Manufacture of Plates for Electric Accumulators.
Year: 1893

page_text: Date of Application, 7th July, 1893
Complete Specification Left, 6th Apr., 1894-Accepted, 12th May, 1894
Improvements in the Manufacture of Plates for Electric
Accumulators.
I, CONSTANT ROUSSEAU, of 113, Boulevard Sébastopol, Paris in the Republic
of France, Mechanic, do hereby declare the nature of this invention to be as
follows
--
My invention relates to the Manufacture of Plates for Electric Accumulators.
According to my invention I first mould lead plates with longitudinal ribs and
then produce by mechanical means transverse or oblique cuts or slits in the said
ribs so as to form clean teeth or projections more or less sharp or rectangular and
The said teeth or
the shape of which may vary according to requirements.
projections are designed to be beaten down more or less over the paste or active
material to confine it and retain it in contact with the lead plate or core.
Dated the 7th day of July 1893.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Plates for Electric
Accumulators.
I, CONSTANT ROUSSEAU, of 113, Boulevard Sébastopol, Paris, in the Republic
of France, Mechanic, 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 I first mould lead plates with ribs and then produce
by mechanical means transverse or oblique cuts or slits in the said ribs so as to
form clean teeth or projections more or less sharp or rectangular and the shape of
which may vary according to requirements. The said teeth or projections are
designed to be beaten down more or less over the paste or active material to
confine it and retain it in contact with the lead plate or core.
I am thus able to produce flat plates which can easily be freed without any
appreciable deformation from the moulds which serve for the first operation of the
manufacture; and the second operation produces teeth with very clean points.
To enable my invention to be fully understood I will describe how it can be
carried into practice by reference to the accompanying drawing, in which :-
Figure 1 is a transverse section of a mould suitable for making lead plates with
longitudinal ribs which is the first stage in the manufacture of plates for electric
accumulators according to my invention:
Figure 2 is an elevation of the inner side of a portion of one part of the
mould; and,
Figure 3 is a horizontal section of part of the mould:
Figure 4 is a section of part of a lead plate made in the said mould; and,
Figure 5 is an elevation of part of the finished plate.
The mould consists of two parts A, A in which are formed long recesses a, a, a
in such a manner that by running molten lead through the funnel-shaped part Ba

page_text: lead plate is produced like that a fragment of which is shewn in Figure 4. This
plate is formed with a flat core a having ribs with sharp edges as shewn or of
rectangular form or with rounded edges as required. After this moulding operation
the teeth are mechanically formed by cutting these ribs transversely with a saw or
.cutter. I thus obtain as shewn in Figure 5 teeth or points more or less sharp and
distant from one another, and quite clean or smooth which are designed to be
beaten down more or less over the paste or active material to confine it and keep it
in contact with the lead plate or core. The shape of the teeth thus formed can be
varied; for example I would particularly mention that the saw cuts may be made
obliquely to the teeth.
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:-
The manufacture of lead plates for electric accumulators by first moulding a lead
plate with ribs and afterwards making by mechanical means transverse or oblique
cuts or slits in such ribs so as to form clean or smooth teeth or points more or less
sharp or rectangular and the shape of which may be varied according to
requirements, substantially as hereinbefore described.
Dated this 6th day of April 1894.
G. F. REDFERN & Co.,
.4, South Street, Finsbury, London, Agents for the Applicant.