IMPROVEMENTS IN MACHINERY FOR ROLLING METAL TUBES OR RODS
Year: 1874

page_text: LETTERS PATENT to Hiram Washington Hayden, of Waterbury, in
the State of Connecticut, United States of America, for the Inven-
tion of "IMPROVEMENTS IN MACHINERY FOR ROLLING METAL TUBES OR
RODS."
Scaled the 7th July 1874, and dated the 7th April 1874.
PROVISIONAL SPECIFICATION left by tho said Hiram Washington
Hayden at the Office of the Commissioners of Patents, with his
Petition, on the 7th April 1874.
I, HIRAM WASHINGTON HAYDEN, of Waterbury, in the State of
Connecticut, United States of America, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN MACHINERY FOR ROLLING METAL
TUBES OR RODS," to be as follows:-
My Invention relates to a machine for rolling rods or tubes and
reducing them in diameter and extending them in length from a cast
|ingot or thicker tube or rod.
Three reducing rollers are made use of, and these rollers are revolved
by competent power. Onc or more of the axes of these rollers are at

page_text: an inclination to the tube so as to cause the pipe or rod as revolved to
progress endwise through between these rollers in consequence of the
rolling action being in the direction of the thread of a screw.
When the axes of two of the rollers are parallel to the article being
rolled the surface will be very uniform and smooth. A mandrel is intro-
duced within the tube, and it is held at one end, but allowed to revolve
with the tube as the latter is revolved by the rollers. The entire
mandrel may revolve or only a sleeve upon the mandrel at the point of
reduction.
The reducing rollers are driven preferably by universal jointed bars
diverging to gear wheels, and these are acted upon by a central gear
wheel with a hollow shaft for the tube or rod to pass through. Tho
journal boxes of the reducing rollers are adjustable to adapt them to thic
diameter of pipe or rod acted upon, and the inclination of the roller or
rollers may also be changed.
י
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Hiram Washington Hayden in the Great Scal
Patent Office on the 2nd October 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HIRAM
WASHINGTON HAYDEN, of Waterbury, in the State of Connecticut,
United States of America, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of April, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-seventh year. of Her reign, did, for Herself, Her heirs and succes-
sors, give and grant unto me, the said Hiram Washington Hayden, Her
special licence that I, the said Hiram Washington Hayden, my executors,
administrators, and assigns, or such others as I, the said Hiram
Washington Hayden, my executors, administrators, and assigns, should
at any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an In-
yention for "IMPROVEMENTS IN MACHINERY FOR ROLLING METAL TUBES OK
.

page_text: preference are slightly rounded towards one or both of their ends, or
they may be largest in the middle, or made with a slight taper towards
the end where the tube enters to prevent the formation of a shoulder on-
tho pipe.
(
L
.
The tube or ingot is placed upon the mandrel g, and this is held
within a notch in the frame h, there being a neck or head to the mandrel.
that allows the mandrel to revolve, but holds it in position as the tube
is drawn off. The mandrel may be a stationary rod with a cylindrical
sleeve h¹, where the tube is compressed, and this may revolve with the
tube. The stationary head or frame is made to receive the pinions or
gears m that are around the driving wheel n, the axis of which is hollow.
so that the pipe or tube that is operated upon may pass through the
same. The power is applied by preference to this central wheel n, and
the loose clutch couplings or universal joints r and shafts & connect the
shafts of the respective wheels or pinions m with the shafts of the
reducing-rollers c.
b
. It will now be apparent that the rolling and reducing operation is
around the pipe in a line similar to a screw thread, and that the pitch
line of such screw. will depend upon the positions in which the axes of
the rollers c are placed to the tube. The angle at which the axes of tho
rollers stand to the tube should not be sufficient to produce ridges or
inequalities in the tube in consequence of too rapid movement of the
tubo endwise of the mandrel.
a
The machine shown in Figs. 1, 2, and 3 is specially adapted to reducing
the tube in thickness and elongating the same; because all the rollers
are set an inclination, and hence compress the tube in the line of
three threaded screw; but in Figs. 4, 5, & G there are two rollers parallel
with the axis of the tube, and one roller is at an inclination so as to
cause the tube x to progress through the machine as it is reduced, but
in this case the reduction should not be as great, as the machine is more
especially adapted to polishing and finishing the tube, but it may bo
used with metal rods or tubes for straightening or polishing or reducing
the same more or less.
The bearings 6 for the rollers are by preference made cylindrical and
set within the concave faces of the openings in the frame: so that the
cylinder can be turned around more or less, and thereby the line of the

page_text: axis changed to a greater or less inclination to the tube. To allow for
this adjustment segmental clamps w are provided, which are secured by.
bolts passing through slots and entering the said cylindrical bearings.
The ends of these clamps coming against the frame prevent-the bearings
changing position after adjustment. The adjusting screws fpress.against
the end of the bearing 6 to sustain the same and the roller carried by.
said bearing when in use, and in order to move the bearing towards the
screw, as the latter may be unscrewed, the yoke and rods varo
employed, the yoke resting against a shoulder near the screw head and
the rods v. being connected to the yoke and the bearing.
In cases where the bearing is cylindrical and adjustable to vary the
inclination of the roller the said rods v should be attached to a counter-
sunk ring v¹, shown in Fig. 7, which is connected by bolts passing
through slots so as to allow of the bearing being turned in the frame as
aforesaid, after which the ring of the yoke is clamped to its place.
The mandrel employed is to be of any desired character, and in cases*
where the tube is to be reduced in diameter without lessening the thick-
ness the mandrel may be dispensed with, or else it may be smaller than
the bore of the tube or ingot as it is introduced into the machine.
It is to be understood that the tube is slipped upon the mandrel and
then the mandrel is placed in its holder and the tube passed forward
along the mandrel until it is taken by the rollers and drawn along and
revolved.
The tube x may be reduced in either a cold or hot state, and this
machine may be employed in rolling boiler tubes and cylinders of steel
or other metal, and of any size to which the apparatus is adapted.
15,-
What I claim as my Invention and desire to secure by Letters Patent
What I claim as my Invention and desire to secure by Letters Patent

page_text: Third. The cylindrical bearings for the reducing rollers c in combi-:
nation with the segmental clamps w for holding the same in position
when adjusted.
:
Fourth. Three reducing rollers, one or more of which is at an inclina-
tion, in combination with the mandrel and a frame that holds the same,
but allows of the entire mandrel or a section thereof revolving with the
tube, substantially as specified..
: In witness whereof, I, the said Hiram Washington Hayden, have,
hereunto set my hand and seal, this Twenty-second day of July,
A.D. 1874.
Witnesses,
-
HIRAM W. HAYDEN. (L.S.)
E. S. HAYDEN, of Waterbury, Conn.
CHAS. N. GIELLETT, of Waterbury, Conn.
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