IMPROVEMENTS IN MACHINERY FOR ROLLING METAL
Year: 1878

page_text: LETTERS PATENT to Eric Hugo Waldenström and William Sumner, both of
Manchester, in the County of Lancaster, Engineers, for the Invention of
"IMPROVEMENTS IN MACHINERY FOR ROLLING METAL."
ealed the 26th July 1878, and dated the 16th February 1878.
PROVISIONAL SPECIFICATION left by the said Eric Hugo Waldenström and
William Sumner at the Office of the Commissioners of Patents on the 16th
February 1878.
ERIC HUGO WALDENSTRÖM and WILLIAM SUMNER, both of Manchester, in the
County of Lancaster, Engineers. "IMPROVEMENTS IN MACHINERY FOR ROLLING
METAL."
Our Invention is particularly applicable in rolling copper or other metal
cylinders placed on mandrils, but it may be applied to various other purposes.
The object of our Invention is to obtain the greatest amount of elongation in the
shortest time.
Our Invention consists in an improved arrangement of the rolls, and in an
apparatus for opening and closing the same between each passage of the metal.
cylinder or other shaped article. We place the rolls horizontally instead of verti-
cally as heretofore, and one of the rolls is carried and revolves in sliding blocks
fitting in the side frames; these blocks can be moved rapidly to and fro simulta-
neously by screws or inclined surfaces, actuated by levers and a connecting link, or
by other equivalents. The hollow cylinder or other article to be rolled is placed
on a taper mandril, which may be provided with a shoulder, on which the cylinder
or other article rests; the mandril is suspended to a chain connected to a lifting
apparatus.
When the cylinder has been brought in a line vertically over the first pair of
grooves in the rolls, which are then closed, it is lowered and drawn between the
rolls, and as soon as the cylinder has passed, the rolls are opened by the levers or
other equivlents before referred to, to allow the cylinder to be lifted through the said

page_text: grooves, it is then brought over the centre of the next pair of grooves, and when
the rolls are closed the operation is repeated as before; and these operations are
repeated as often as may be required. By this means a great saving of time is
effected, as only the length of the cylinder or other article passes through the grooves,
and not the full length of the mandril, as heretofore necessary.
Our apparatus for opening and closing the rolls may also be applied to rolls
working one above the other.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Eric Hugo Waldenström and William Sumner in the Great Seal
Patent Office on the 15th August 1878.
ERIC HUGO WALDENSTRÖM and WILLIAM SUMNER, both of Manchester, in the
County of Lancaster, Engineers. "IMPROVEMENTS IN MACHINERY FOR ROLLING
METAL."
Our Invention is particularly applicable in rolling copper or other metal cylinders
placed on mandrils, but it may be applied to various other purposes.
The object of our Invention is to obtain the greatest amount of elongation in the
shortest time.
Our Invention is particularly applicable when rolling hollow cylinders on a
mandril, and it consists in an improved arrangement of the rolls, and in certain
apparatus for opening and closing the same between each passage of the cylinder or
other shaped article under operation.
And in order that our Invention may be fully understood, and readily carried
into operation, we will proceed to describe the accompanying three Sheets of
Drawings, reference being had to the figures and letters marked thereon.
On Sheet 1 Fig. 1 is a sectional elevation of our improved machinery for rolling ;
on Sheet 2 Fig. 2 is a side view, and Fig. 3 a plan of the same; and on Sheet 3
Fig. 4 represents a modification of part of our Invention.
a is the foundation plate, and b, b, the side standards supporting the fixed blocks c
and the sliding blocks d, in which the grooved rolls e and f revolve; these rolls
instead of being placed one above the other as usual we now place in the same
horizontal plane for the convenience of working. To each block d is connected
by a set washer and screw a shaft d', and to each of these shafts are fixed two cams
with inclined surfaces d². The shafts d¹ pass through the standards b, to which are
fixed the plates with inclined surfaces b¹. To the shafts are fixed the levers d³,
which are united by the link d; one of the levers d³ is prolonged and terminates in
the handle do. By moving this handle in one direction or the other the roll f is
moved nearer to or further from the roll e, by the action of the inclined surfaces
of the movable cams on the corresponding surfaces of the fixed cams b¹. The
hollow cylinder or other article to be rolled is placed on the mandril g,
which may be provided with a shoulder, on which the cylinder or article rests;

page_text: the mandril is suspended to a chain connected to a lifting apparatus of the ordinary
construction.
When the cylinder or other article to be rolled has been brought in a line verti-
cally over the desired pair of grooves in the rolls, which are then closed, it is
lowered and drawn between the rolls, beneath which is a pit, as shewn in Fig. 1,
and as soon as the cylinder has passed the rolls are opened by the levers d³, or
other equivalents before referred to, to allow the cylinder to be lifted through
the said grooves; it is then brought over the centre of the next pair of grooves, and
is turned one-fourth round in the usual manner, and when the rolls are again
closed the operation is repeated as before; and these operations are repeated as often
as may be required. By this means a great saving of time is effected, as only the
length of the cylinder or other article passes through the grooves, and not the full
length of the mandril, as heretofore necessary, the greatest amount of elongation is
obtained in the shortest time, and the elongation always takes place in the same
direction, whereas when the rolls are reversed in an ordinary rolling mill the
elongation takes place alternately in opposite directions which is not desirable when
rolling on a taper mandril.
Fig. 4 represents a modification of our improved apparatus for moving the blocks
d supporting the roll f, whereby the rolls can be rapidly opened to allow the cylinder
or other article to be drawn back when rolled, and for closing them again for the
next operation. In this arrangement a small hydraulic cylinder h is fixed to each
sliding block d, and to each standard 6 is fixed a small ram i. When water under
pressure is forced into the cylinders h the roll ƒ is closed against the roll e, and as
soon as the water is discharged from the cylinders h the weighted lever k¹ on the
shaft k causes the lever ; and link de to open the rolls.
Our apparatus for opening and closing the rolls may also be applied to rolls working
one above the other or vertically.
Having thus stated the nature of our Invention, and described the manner of
performing the same, we declare that we claim, the improved arrangement of rolls
and the mode of opening and closing them, as shewn and described, which arrange-
ment permits the cylinder to be suspended vertically and passed between the grooves
of the rolls and withdrawn by power, whereby the operation of rolling is performed
in less time and with less labour than heretofore.
In witness whereof, we, the said Eric Hugo Waldenström and William Sumner,
have hereunto set our hands and seals, this Fourteenth day of August,
One thousand eight hundred and seventy-eight.