Improvements in Tube and like Rolling Machines.
Year: 1893

page_text: Date of Application, 15th May, 1893
Complete Specification Left, 14th Feb., 1894-Accepted, 12th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in Tube and like Rolling Machines.
We, WILLIAM PILKINGTON, CHARLES THOMAS BISHOP, ANDERSON
BROWNSWORD, and ARTHUR PILKINGTON, trading as The Climax Steel Tube
Company, of Catherine Street, Aston in the County of Warwick, Manufacturers,
do hereby declare the nature of this invention to be as follows:-
This invention relates to the manner in which we construct and arrange machines
and mills for rolling metal tubes or rods, the object of our invention being to reduce
the diameter and draw down such tubes or rods while in a cold state and without
requiring that the metal shall be annealed after each operation.
In carrying our invention into effect we mount three or more peculiarly formed
rollers within side frames or housings of our improved mill or machine, the spindle
of each roller being arranged within the frames at an angle one with the other
instead of running in parallel lines. The shape and configuration of the rollers we
make preferably that of a series of bulbs or projections, the extent and shape of
these projections being generally proportioned with a bulb or round head at the
outside or entering end of the roller while the last or finishing projection- at
the issuing end we prefer to make flatter in extent so as to more effectually
finish or smooth down the surface of the tube when passing through the mill or
machine.
We place the tube to be operated upon through the end of the housings, that is,
between the ends of the spindles of the rolls, and we pass the tube through the
rolls in the direction of their length, in such a manner that the tube enters through
one frame or housing of the machine and passes out through the opposite one. As
the tube enters the machine it is first caught by the three inclined rollers at their
most open or widest part and is then drawn through by the revolution of the rolls
in a manner which causes a gradually reducing area or opening to be presented for
the passage of the tube. This reduction of opening we cause to be formed by the
peculiar position and mounting of the spindles, and the tube is drawn through in a
spiral manner, the projections upon the rolls acting meantime upon the surface of
the metal to draw it out or gradually reduce its thickness during the passage
through the machine.
We vary the shape and number of projections which we form upon the rolls, and
the number of rolls which we employ beyond the minimum of three for one set to
suit the particular character and nature of the metal which is to be operated
upon.
We sometimes arrange a number of sets of rolls within one pair of housings or
side frames when it is desired to economise space. and power driving gearing.
When reducing tubes in our improved machine we cause the tube to be carried
upon a mandril which we prefer to allow to travel with it through the machine. And
when reducing or drawing down solid rods we employ the same essential features
hereinbefore described as being necessary when operating upon tubes.
.
To prevent excessive shock or damage to gearing or other portions of our mill
during working, we prefer to arrange yielding bearings held in position by
adjustable springs, hydraulic pressure or other ordinary safety caps so that undue
strain upon the rollers may cause a yielding of the mountings of the machine

page_text: rather than to cause a stoppage of motion of the spindle or gearing of our improved
machine or rolling and drawing mill.
Dated this 13th day of May 1893
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Tube and like Rolling Machines.
We, WILLIAM PILKINGTON, CHARLES THOMAS BISHOP, ANDERSON
BROWNSWORD, and ARTHUR PILKINGTON, trading as The Climax Steel Tube
Company, of Catherine Street, Aston, in the County of Warwick, Manufacturers,
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:-
This invention relates to the manner in which we construct and arrange machines
and mills for rolling metal tubes, the object of our invention being to reduce the
diameter and draw down such tubes while in a cold state and without requiring
that the metal shall be annealed after each operation. We also employ our
machine for rolling tubes which have been cold drawn on a mandril, the object of
the rolling, being to roll out the tube while on the mandril, and thus to draw it off
the mandril, which has become tightly connected to the tube in the ordinary
operations of drawing the tube down in the draw bench.
and
In the two accompanying sheets of explanatory drawings,
Figure 1 is an end elevation, and Figure 2 a side elevation of our machine.
Figure 3 is a detailed portion of our machine showing the rolls in end elevation,
Figure 4 is a sectional end elevation of the rollers alone.
In carrying our invention into effect we mount three or more, peculiarly formed
rollers A A A within side frames or housings B, B', of our improved mill or
machine, the spindles a, a, a², of the rollers being arranged within the frames, at
an angle one with the other, instead of running in parallel lines. The shape and
configuration of the rollers A, A1, A2, we make preferably in the form of bulbs,
projections, or round edged discs upon the shafts, or we arrange a series of such
bulbs or projections varying in diameter and width generally upon the same spindle,
so as to more effectually finish, or smooth down the surface of the tube, when
passing through the mill or machine.
We place the tube T, to be drawn down and operated upon through the end of
the housings B, B¹, that is, between the ends of the spindles of the rolls as shown in
Figures 3 and 4, and we pass it through the rolls in the direction of their length, in
such a manner that the tube enters through one frame or housing B' of the machine
and passes out through the opposite one B. As the tube enters the machine, it is
first caught by the three inclined rollers at their most open or widest part, and it
is then drawn through by the revolution of the rolls, in a manner which causes a
gradually reducing area, or opening to be presented for the passage of the tube.
This reduction of opening we cause to be formed by the peculiar position and
mounting of the spindles, as shown in Figure 2, which also causes the rod or tube
to be drawn through in a spiral manner, the bulb or curved edges of the rolls
acting meantime upon the surface of the metal to draw it out, or gradually reduce
its thickness during the passage through the machine.
We vary the shape and number of projections which we form upon the rolls.
and the number of rolls which we employ beyond the minimum of three for one
set, to suit the particular character, and nature of the metal which is to be operated
upon.
1.

page_text: We sometimes arrange a number of sets of rolls within one pair of housings or
side frames when it is desired to economise space, and power driving gearing.
When reducing tubes in our improved machine we cause the tube to be carried
upon a mandril which we prefer to allow to travel with it through the machine.
And when operating upon tubes for the purpose of taking them off their mandrils
upon
which they have been drawn in the ordinary draw bench or mill as shown in
Figures 3 and 4, we employ the same essential features hereinbefore described as
being necessary when operating to reduce or extend the tubes.
To prevent excessive shock or damage to gearing or other portions of our mill
during working, we arrange yielding bearings C, C', or caps which we hold in
position by adjustable springs D, D³, top plates E, E', and keep bolts F, F¹, or we
may employ hydraulic pressure, or other ordinary safety caps, so that undue strain
upon the rollers may cause a yielding of the mountings of the machine, rather
than to cause a stoppage of motion of the spindle or gearing of our improved
machine or rolling and drawing mill.
We drive the rolls by gearing of any ordinary kind as shown from shafts and
belt pulleys arranged conveniently as shown in Figures 1 and 2.
"Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The construction and arrangement of a machine having inclined shafts,
carried within the frames, housings or bearings, and having rollers formed or
mounted upon the shafts, for rolling or operating upon tubes, substantially as
hereinbefore described, and as illustrated in the accompanying drawings.
2. In a tube rolling machine, or mill in which the shafts are placed at an
inclination one to the other, the combination and arrangement of a yielding bearing
hood or cap, substantially as hereinbefore described and as illustrated in the
accompanying drawings.
Dated this 14th day of February 1894.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicants.