IMPROVEMENTS IN ROLLS FOR PRESSING OR ROLLING BAR IRON OR OTHER METALS
Year: 1884

page_text: I CARL ROBERT WEDELIN of 53 Södra Hamngatan Gothenburg in the Kingdom
of Sweden Engineer at present residing at the Royal Hotel Blackfriars in the
City of London do hereby declare the nature of said Invention for "IMPROVEMENTS
IN ROLLS FOR PRESSING OR ROLLING BAR IRON OR OTHER METALS" to be as
follows:-
My Invention consists in so constructing rollers intended to produce a varying
or straight section of iron or other material as that a close groove is formed and
maintained and that the tendency to form what are called fins is counteracted.
I employ two pressures that is to say the ordinary pressure due to the revolution
of a pair of rolls as is well understood and end pressure applied between the end
faces of rolls accurately turned into a true plane at right angles to the axis of
revolution.
It is well known that in the ordinary process of rolling to reduce the section of
a bar of iron for instance if certain conditions be not observed in regard to the
amount of pressure the fit of the rolls and the heat of the bar what is called a
'fin" is produced-now by my Invention this inconvenience is obviated-The
groove in which the iron is to be rolled is formed on the rolls so as that the end
pressure of the faces shall close it absolutely in two directions whereby any part of
the iron, tending to form a fin shall be swept back into the material being rolled,
and that the sides of the section formed in the rolls shall close it in the other two
directions against the solid body of each roller-I am thus enabled to roll a softer
material with a heavier pressure than is possible with existing arrangements and
I am also enabled to vary within limits the sections formed on the same bar of iron
in a manner hitherto unattainable.

page_text: Improvements in Rolls for Pressing or Rolling Bar Iron or
other Metals.
I CARL ROBERT WEDELIN of 53 Södra Hamugaton Gothenberg in the Kingdom
of Sweden Engineer do hereby declare the nature of my invention for "IMPROVE-
MENTS IN ROLLS FOR PRESSING OR ROLLING BAR IRON OR OTHER METALS" and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
My Invention consists in so constructing rollers intended to produce a varying
or straight section of iron or other material as that a close groove is formed and
maintained and that the tendency to form what are called fins is counteracted.
I employ two pressures that is to say the ordinary pressure due to the revolution
of a pair of rolls as is well understood and end pressure applied between the end
faces of rolls accurately turned or formed into a true plane preferably at right
angles to the axis of the revolution.
It is well known that in the ordinary process of rolling to reduce the section of
a bar of iron for instance, if certain conditions be not observed in regard to the
amount of pressure, the fit of the rolls, and the heat of the bar, what is called a
"fin" is produced; now by my invention this inconvenience is obviated. The
groove in which the iron is to be rolled is formed on the rolls, so as that the end
pressure of the faces shall close it absolutely in two directions, whereby any part
of the iron tending to form a fin shall be swept back into the material being
rolled, and that the sides of the section formed in the rolls shall close it in the
other two directions against the solid body of each roller-I am thus enabled to
roll a softer material with a heavier pressure than is possible with existing arrange-
ments and I am also enabled to vary within limits the sections formed on the same
bar of iron in a manner hitherto unattainable.
The accompanying drawing will serve to illustrate my Invention more clearly
Figure 1 is a plan of a pair of rolls arranged according to my Invention. Figure 2
is a longitudinal section of the same Figure 3 is a side view of the same and Figure 4
is a section of the same on the line x Figure 2.
The two rolls are marked A and B. respectively and the groove between them in
which the metal is rolled and shaped is marked C. It will be readily understood
by an inspection of the said Figures and more especially of Figure 2 how the
arrangement of the rolls and the groove formed between them enables the two
pressures hereinbefore mentioned to be obtained-I do not limit myself to the
shape of the groove or grooves between the rolls as it or they may be of any shape
necessary to produce the required section of metal. The metal is shewn at D'in
the position in which it is just about being seized between the rolls to be carried
between them and partly round them in the groove C. By this construction and
arrangement of the rolls the groove is fully closed during the entire rolling process
so that no "fins
are formed on the blanks or shape metal and further if the
side of the track be made inclined the Rolls allow the blank to slip immediately it
leaves the groove so that the blank will leave the rolls in a straight course. If the
groove were made in the periphery of the rolls as usual the blank would follow the

page_text: movement of one of the rolls and would be curved instead of issuing in a straight
line. In order to give the necessary pressure during rolling of the ends of the rolls
against the blank the ends of the shaft of the rolls may have an adjustable pressure
given to them which can conveniently be effected by means of screws as shown
at E-as shewn in the drawing the grooves may be made in rings a and b fixed by
screws or otherwise to the rolls so that the said plates can be removed and replaced
readily when the grooves become worn or when a different section of metal is to be
rolled.
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
In rolls for rolling bar iron or other metals, forming the grooves in the rolls
and relatively arranging the said rolls substantially as herein before described and
illustrated in the accompanying drawings and for giving the advantages herein-
before mentioned.