Improvements in the Manufacture of Rolls as used in Rolling Mills, Plate Bending and Straightening Rolls, and the like.
Year: 1891

page_text: Date of Application, 7th July, 1891
Complete Specification Left, 28th Mar., 1592—Accepted, 30th Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Rolls as used in Rolling Mills,
Plate Bending and Straightening Rolls, and the like.
I EDWARD JAMES DUFF, Works Manager of Steel Works, 118 Ingleby
Drive Dennistoun, in the County of Lanark, North Britain do hereby declare the
nature of this invention to be as follows:-
My said invention bas for its object the strengthening of cast iron rolls, as used
in steel and iron rolling mills, plate bending rolls, plate straightening rolls, and
the like.
In
In carrying out my invention as applied to cast iron rolls, I place in the mould
in which I cast the said rolls; a series of wrought iron or wrought steel bars.
such manner that these bars are equally divided- -or spaced-in the circumference
of a circle smaller than that of the outside circumference of the roll. The bars
are laid in the mould parallel and equidistant from the centre line or axis of the
roll, and extend from one end of the roll to the other end, that is-they are as
long as the roll barrel. The bars may be of round, square, rectangular, or other
suitable section, and are roughed or jagged on their surface, in order to take a firm
hold of the metal which is cast in the ordinary way-round about them. By this
means. I manufacture a roll which is made of cast iron bound together internally
by wrought iron or steel bars. I thus produce a roll which is much stronger and
more durable than a roll which is not bound together in such manner. The distribu-
tion of the bars in the casting can be varied from that describe according to the
necessities incurred by the size & shape of the casting.
Dated this 4th day of July 1801
EDWARD JAMES DUFF,
Inventor.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Rolls as used in Rolling Mills,
Plate Bending and Straightening Rolls, and the like.
1, EDWARD JAMES DUFF, Works Manager of Steel Works, 118, Ingleby
Drive, Dennistoun, Glasgow, in the County of Lanark, North Britain 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, that is to say :--
My said invention has for its object the strengthening of cast iron rolls as used
in steel and iron rolling mills, plate bending rolls, plate straightening rolls, and
the like. '
In carrying out my invention as applied to cast iron rolls, I place in the mould,
in which I cast the said rolls, a series of wrought iron or wrought steel bars, in
such manner as to be equally spaced in the circumference of a circle smaller than
the periphery of the roll. The bars are fixed in the mould parallel to and
equidistant from the axis of the roll and extend from the one end of the roll to the
other. The said bars may be of round, square, rectangular or other suitable
section and are "roughed" or "jagged on their surfaces in order that they may
take a firm hold of the metal which is cast round about them.
:
And in order that my said invention and the manner of performing the same
may be properly understood, 1 hereunto append a sheet of explanatory drawings,
DC7

page_text: to be hereinafter referred to, and showing two examples of rolls, as made with my
improvements.
Figure, 1, of the drawings is an end elevation.
Figure, 2, a side elevation with a part broken off, and Figure, 3, a transverse
vertical section of one example of my improved roll.
Figures 4, 5, and 6, are similar views of another example.
In these drawings the same reference lotters are used to mark the same or like
parts wherever they are repeated.
In making the example shown in Figures 1, 2, and 3, I place in the mould in which
the roll, A, is to be cast, a series of wrought iron or wrought steel bars, B, in. such
manner as to be equidistantly spaced in a circle, smaller than that of the circum-
ference of the roll. The bars, B, are fixed in the mould with their main portions
parallel to the axis of the roll, A, and they extend from one end of the acting part
of the roll to the other end. The bars, B, are curved at their extreme ends, C, to
facilitate theireing held in the mould, but the projecting ends, C, are cut off
after the casting has been completed. The bars, B, are preferably made circular
in section, as shown in the drawings, but may if desired be made of square,
rectangular, or other suitable section, and are "roughed " or "jagged" on their
surfaces in order to take a firm hold of the metal which is cast round about them.
By this means I produce a roll, A, which whilst consisting principally of cast iron,
is considerably strengthened by the wrought iron or steel bars, B, and is more
durable than a roll not thus bound together.
The roll, A, shown in Figures, 4, 5, and 6, is of larger size and is provided with
more of the strengthening bars, B, some of these being, as seen in cross section, on
an inner circle. These inner bars, B, extend through the neck of the roll and
energe at the concave parts at the outer end of the neck.
The distribution of the bars, B, in the casting can be varied from that shown in
the drawings, and hereinbefore described, according to the necessities incurred by
the size and shape of the casting.
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 :-
In the manufacture of cast iron rolls the strengthening of them by wrought
iron or wrought steel bars upon which the rolls are cast substantially as herein-
before described.
Dated this Twenty-fourth day of March 1892.
EDMUND HUNT,
Applicant's Agent.