Process for the Preparation of Composite Leaden Plates.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Process for the Preparation of Composite Leaden Plates.
I, ROBERT RITTER VON BERKS, Manufacturer, and JULIUS RENGER, Manager,
both of the Lead Works, 20, Gyar Uteza, Budapest VI, in the Kingdom of
Hungary, do hereby declare the nature of this invention to be as follows:-
Our invention relates to a process for the pressing of lead plates which are
formed by the welding together of straight and of corrugated strips of material.
The process is carried out in the manner hereinafter described by pressing
heated lead plates, which plates consist of straight and of corrugated strips, the
said strips being united together at the points of contact so that they form a
single plate.
In carrying our process into effect we heat the lead nearly to its melting
point, and then force it through a mould provided with a series of apertures, in
such a manner that a given number of the moulded strips of lead passes out of
the mould at a greater speed than the remaining strips, which latter being drawn
upwards by a tension device of the usual construction pass on in a straight line,
whilst the first mentioned strips being still in the heated and soft state unite them-
selves to the straight strips, and are thus compelled to assume a folded or
corrugated form between two adjacent straight strips.
In order to attain the different speed of progression from one and the same
mould the apertures of the mould are so arranged that those apertures which
are designed for the corrugated strips offer a less resistance to the material than
the openings devised for the straight strips. The difference of the resistance
which these apertures of the mould offer to the material can be attained either by
the varied construction of the sides of the apertures or by the varied dimensions
of the section of the said apertures, or finally by a combination of both these
means.
If the side walls of the mould apertures are constructed parallel, these will
offer to the material a greater resistance than the other openings which are funnel-
shaped. The resistance of the apertures of the mould can obviously also be
varied by other similar devices, such for instance, as by adjustable slides, or by
respectively roughening and smoothing the sides of the apertures by narrowing
The greater the
the openings by means of heels or projections and so forth.
difference between these resistances the greater will be the difference of speed of
the lead rods or strips, and consequently the greater the folding of the corrugated
strips so that the thickness of the plate can be regulated at will. The same object
can also be attained by giving to the openings for the folded strips a greater sec-
tional diameter than to the openings for the straight strips, in consequence of
which the former will afford a less resistance to the material than the latter.
Moreover these two kinds of differences can be combined so that a system can
be devised having one set of openings of greater section than the other, and more-

page_text: over having the difference in resistance increased further by the construction of
the side walls. The aforesaid rods or strips can be made of any desired section.
Dated the Twenty-ninth day of August 1898.
Process Ior the Freparation of composite Leaden Flates,
I, ROBERT RITTER VON BERKS, Manufacturer, and JULIUS RENGER, Manager,
both of the Lead Works, 20, Gyar Uteza, Budapest VI, in the Kingdom of
Hungary, 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:
Our invention relates to a process for the pressing of lead plates which are
formed by the welding or uniting together of straight and of corrugated strips
of material.
The process is carried out in the manner hereinafter described by pressing
heated lead plates, which plates consist of straight and of corrugated strips or
sheets the said sheets being united together at the points of contact so that they
form a single plate.
In carrying our process into effect we heat the lead nearly to its melting point, a
and then force it through a mould provided with a series of apertures, in such
a manner that a given number of the moulded sheets of lead passes out of the
mould at a greater speed than the remaining sheets, which latter being drawn
upwards by a tension device of the usual construction pass on in a straight line,
whilst the first mentioned sheets being still in the heated and soft state unite
themselves to the straight sheets, and are thus compelled to assume a folded or
corrugated form between two adjacent straight sheets.
In order to attain the different speed of progression from one and the same
mould the apertures of the mould are so arranged that those apertures which are
designed for the corrugated sheets offer a less resistance to the material than the
openings devised for the straight sheets. The difference of the resistance which
these apertures of the mould offer to the material can be attained either by the
varied construction of the sides of the apertures or by the varied dimensions of
the section of the said apertures, or finally by a combination of both these means.
Referring to the accompanying drawing:-
-
Figures 1 and 2 show the mould in section as well as a portion of the pressed
plate for two different patterns.
Figure 3 shews a modification of the plate with deeply grooved surfaces
intended especially for electric accumulator plates.
Figure 4 is a section on the line IV-IV of Figure 3.
Figure 5 shews a view from above of the openings of the mould for the plate
shewn in Figure 3.
If the side walls of the mould apertures a (Fig. 1 and 2) are constructed
parallel, these will offer to the material a greater resistance than the other open-
ings which are funnel shaped. The resistance of the apertures of the mould
can obviously also be varied by other similar devices, such for instance, as by
adjustable slides, or by respectively roughening and smoothing the sides of the
apertures by narrowing the openings by means of heels or projections and so
forth. The greater the difference between these resistances the greater will be the
4

page_text: difference of speed of the lead sheets or strips, and consequently the greater the
folding of the corrugated sheets 6 so that the thickness of the plate, as may be
seen from Figures 1 and 2 can be regulated at will. The same object can also
be attained by giving to the openings 6 for the folded sheets a greater sectional
diameter than to the openings a for the straight sheets, in consequence of which
the former will afford a less resistance to the material than the latter. Moreover
these two kinds of differences can be combined so that a system can be devised
having one set of openings of greater section than the other, and moreover having
the difference in resistance increased further by the construction of the side
walls. The aforesaid rod or sheets a¹ and 6¹ can be made of any desired section.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:
-
1. Process for the production of composite plates consisting of straight and
corrugated sheets, characterised by the corrugated sheets being pressed out of
the mould at a greater speed than the straight sheets, substantially as described.
2. A mould for carrying out the process set forth in Claim 1, the apertures a of
which are parallel or so constructed whilst the apertures 6 are so widened outwards
that there is a considerable difference in the resistance offered by the said aper-
tures a and b for the purpose of forming the straight sheets a¹ and the corrugated
sheets 6, substantially as described and illustrated in the accompanying drawings.
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester and Birmingham.
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester and Birmingham.