Improvements in and Machinery or Appliances for the Manufacture of Plates and Sheets of Copper, Brass and German Silver.
Year: 1896

page_text: Improvements in and Machinery or Appliances for the Manufacture
of Plates and Sheets of Copper, Brass and German Silver.
I, WILLIAM ROBERTS, of Clifton House Ocker Hill, Tipton, in the County of Stafford
Roll Turner do hereby declare the nature of this Invention to be as follows:-
My invention relates to the manufacture of plates and sheets of copper brass and
German silver and has for its object to reduce to a minimum the waste produced in
the shearing of the edges and ends of the plates and sheets.
In order that my invention may be the better understood I remark that in the
ordinary manufacture of plates and sheets of copper brass and German silver an ingot,
bar or slab of the said metal or alloy is reduced by rolling to the required thinness.
By the rolling operation described the edges of the plates or sheets produced have a
greater length than the middle of the said plates or sheets the ends of the plates or
sheets which last leave the rolls being of a concave figure. Further the said plates or
sheets become less in width towards the said ends which last leave the rolls. In
consequence of the concavity of the said ends of the plates and sheets and the
narrowing of the said plates and sheets great waste results in the shearing of the said
edges and ends.
My invention consists of the improvements hereinafter described in the
manufacture of the said plates and sheets and in the machinery or appliances
employed in the said manufacture whereby the ends of the said plates and sheets
which last leave the rolls are after the final rolling operation approximately straight
and the width of the said plates and sheets is preserved practically uniform.
In manufacturing plates and sheets of copper, brass and German silver according
to my invention I produce preferably by the machinery or appliances hereinafter
described ingots, bars or slabs having a projection extending along the middle of one
or both faces nearly from end to end of the said ingot, bar or slab the said projection
or projections having a greater width at their middle than at their ends. I prefer to
make the said projection or projections of a lozenge shaped figure in plan. By rolling
the said bars in ordinary plate or sheet rolls plates or sheets are produced having
straight or approximately straight ends and uniform width.
In producing an ingot, bar or slab of the kind herein before described having say a
projection on one face only I employ a pair of plain cylindrical rolls commonly called
bar rolls and an iron or steel die plate the said die plate having a perforation or
depression the counterpart of the projection to be produced on the ingot, bar or
slab. I place the bar to be rolled on the die plate and pass them together between
the rolls sufficient pressure being put upon them in the rolling operation to cause
the metal of the bar to fill the perforation or depression in the die plate.
Or the die plate may be dispensed with one of the rolls having a depression in its
acting face for the formation of the projection described.
When an ingot, bar or slab is to be produced having a projection along the middle
of both its faces I employ two die plates the ingot, bar or slab being placed between

page_text: them the die plates and bar being passed through the pair of plain rolls. Or rolls
each having a depression in its acting face may be employed to produce the
projections on the faces of the bar the die plates in this case being dispensed with.
Dated this Eleventh day of September 1896.
COMPLETE SPECIFICATION.
Improvements in and Machinery or Appliances for the Manufacture
of Plates and Sheets of Copper, Brass and German Silver.
I, WILLIAM ROBERTS, of Clifton House, Ocker Hill, Tipton, in the County of
Stafford Roll Turner, do hereby declare the nature of my 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 and sheets of copper, brass and
German silver and has for its object to reduce to a minimum the waste produced in
the shearing of the edges and ends of the plates and sheets.
In order that my invention may be the better understood I remark that in the
ordinary manufacture of plates and sheets of copper, brass and German silver a bar
or slab of the said metal or alloy is reduced by rolling to the required thinness. By
the rolling operation described the edges of the plates or sheets produced have a
greater length than the middle-of-the-said-plates-or-sheets, the ends of the plates or
sheets which last leave the rolls being of a concave figure. Further the said plates
or sheets become less in width towards the said ends which last leave the rolls. In
consequence of the concavity of the said ends of the plates and sheets, and the
narrowing of the said plates and sheets, great waste results in the shearing of the said
edges and ends.
My invention consists of the improvements hereinafter described in the
manufacture of the said plates and sheets and in the machinery or appliances employed
in the said manufacture, whereby the ends of the said plates and sheet which last
leave the rolls are after the final rolling operation approximately straight and the
width of the said plates and sheets is preserved practically uniform.
In manufacturing plates and sheets of copper, brass and German silver according
to my invention I produce preferably by the machinery or appliances hereinafter
described, bars or slabs having a projection extending along the middle of one orboth
faces nearly from end to end of the said bar or slab the said projection or projections
having a greater width at their middle than at their ends. I prefer to make the said
projection or projections of a lozenge shaped figure in plan. By rolling the said bars
in ordinary plate or sheet rolls, plates or sheets are produced having straight or
. approximately straight ends and uniform width.
Figure 1 of the accompanying Drawing represents in plan, Figure 2 in longitudinal
section and Figure 3 in cross section a bar or slab of copper, brass or German silver
which I produce according to my invention for the manufacture of a plate or sheet of
the said metal or alloy.
a is the lozenge shaped projection along the middle of the upper side of the bar
or slab which projection when the said bar or slab is rolled out into a plate or sheet
supplies sufficient metal to preserve approximate parallelism in the sides of the
plate or sheet and also an approximately straight end where the plate or sheet last
leaves the rolls.
Although I prefer the lozenge shaped figure of the projection represented in
Figure 1 yet I wish it to be understood that I do not limit myself thereto as the said
projection a may have the figure in plan represented in Figure 4 or other desired
figure. And instead of providing the desired increase of metal along the middle of

page_text: the bar or slab by making a projection on the upper face of the said bar or slab, a
smaller projection on both the upper and lower faces of the bar or slab may be formed
as is represented in the cross section Figure 5 and marked a, a.
- Or two or more small ribs or projections may be formed on the upper face of the
bar or slab as is represented in Figures 6 and 7; or on both the upper and lower faces
as is represented in Figure 8.
Or the desired increase in the mass of metal at the middle of the bar or slab may
be obtained by forming depressions in the ends of the bar or slab as is represented in
Figares 9, 10 and 11, Figures 9 and 10 representing respectively in plan and
longitudinal section a bar or slab having a depression at each end in its upper face
and Figure 11 representing in longitudinal section a bar or slab with end depressions
in both its upper and lower faces.
Or the desired mass of metal at the middle of the bar or slab may be obtained by
making the bar or slab wider at its middle than at its ends as is represented in
Figure 12.
In producing a bar or slab of the kind represented in Figures 1, 2 and 3 I employ
a pair of rolls of the kind commonly called bar rolls and an iron or steel die plate the
said die plate having a perforation or depression the counterpart of the projection to
be produced on the bar or slab.
Figure 13 represents the said bar rolls in front elevation and Figure 14 the same
in section with a bar in position on the die plate; Figure 15 represents in plan the die
plate separately; Figure 16 is a cross section of the supporting table at the front of
the rolls with the die plate and bar to be rolled in position thereon; Figure 17
represents the same after the rolling operation whereby the rib a is formed on
the bar.
I place the bar A to be rolled on the die plate c and pass them together between
the rolls, sufficient pressure being put upon then in the rolling operation to cause
the metal of the bar to fill the perforation or depression in the die plate cas is best
seen in Figure 17. On the removal of the rolled and fashioned bar the die plate e
returns to the position represented in Figure 14 by the action of the weight shown.
Or the die plate may be dispensed with one of the rolls having a depression or
depressions made in its acting face for the formation of the projections described as is
indicated in dotted lines in Figure 13.
Where a bar or slab is to be produced having a projection along the middle of both
faces I employ two die plates the bar or slab being placed between them the die
plates and bar being passed through the pair of plain rolls. The upper die plate of a
pair of die plates is indicated in dotted lines in Figure 14. Or rolls each having a
depression or depressions in its acting face may be employed to produce the
projections on the faces of the bar the die plates in this case being dispensed with.
In producing a bar or slab having end depressions I employ a die plate or a pair of
die plates having projections the counterpart of the depressions to be formed in the
bar or slab.
Having now particularly described and ascertained the nature of my invention
and in what manner the same is to be performed I declare that I claim as
iny invention:-
First:-The improvements in the manufacture of plates and sheets of co per brass
and German Silver hereinhefore described and represented in the accompanying
Drawing the said improvements consisting in producing plate or sheet bars having
a greater mass of metal at the middle than at the ends of the said bars and in the
treatment of such bara in ordinary plate' or sheet rolls for the production therefrom of
plates or sheets having approximately parallel sides and straight ends, the said greater
mass of metal being provided at the middle of the said plate or sheet bars by making a
projection or projections on one or both faces of the bars or slabs or making
depressions in the ends of one or both faces of the bars or slabs, or by making the
said bars or slabs of a greater width at the middle than at the ends substantially as
hereinbefore described and illustrated,

page_text: Secondly:The improvements in machinery or appliances for the manufacture of
plates and sheets of copper, brass and German silver herein before described and
illustrated in the accompanying Drawing, the said improvements consisting in the
use in conjunction with a pair of ordinary bar rolls of a die plate or die plates having
a depression or depressions, the counter part of the projection or projections to b
formed on the plate or sheet bars, to be used in the manufacture of plates or sheets
of the said metal or alloys, or of a die plate or die plates having projections the
counterpart of the depressions to be formed in the ends of the plate or sheet bars
where bars having end depressions instead of projections are to be employed in the
manufacture of plates or sheets substantially as hereinbefore described and illustrated.
Dated the Fifteenth day of May 1897.
WILLIAM ROBERTS.