Improvements in Metallic Tube-making Machinery.
Year: 1899

page_text: Improvements in Metallic Tube-making Machinery.
I, EDWARD PILKINGTON, of 210, Rookery Road, Handsworth, in the County of
Stafford, Engineer, do hereby declare the nature of this invention to be as
follows:
My invention has for its object the construction of simple and effective
machines adapted for the piercing of solid steel or other metal billets, the
reduction of such pierced billets by hot or cold rolling, the reeling or releasing
of drawn tubes from their mandrels, and for other like operations in the manu-
facture of metallic tubes.
In the construction of a machine in accordance with my invention, I mount a
pair of grooved rolls respectively over and under each other on shafts which are
revolved in opposite directions in any ordinary manner. The said shafts having
the rolls thereon are mounted in housings so arranged that the shafts whilst lying
in horizontal planes are inclined in opposite directions to a vertical plane, the
centre line of the one shaft crossing the centre line of the other at about the
vertical centre line through the rolls. The grooved rolls are each provided with
a single flange and such Hanges are disposed at opposite ends of their respective
rolls when in position.
To pierce a hot solid billet of steel one end is inserted between the grooved
peripheries of the rotating rolls which at once set up a rotation of the billet and
by carrying it forward force it on to and over the piercing mandrel arranged
between the rolls, and thus convert the solid billet into a hollow bloom or tube
use.
The end pressure on the flanges which set up the rotation of the billet, is carried
through the shafts on to suitable thrust bearings, and by thus concentrating the
frictional resistance produced by such pressure near to the centres of the shafts,
it can be readily overcome with but a small expenditure of the driving power.
No mandrel is employed in the use of the machine for the rolling or reduction
of billets both in the hot and cold state, for the rolling or reeling of drawn tubes
to release them from their mandrels, and for other like services.
I arrange the housings with the driving mechanism for the rolls in any con-
venient manner, preferably employing a train or series of the inclined rolls and
shafts as hereinbefore described, for dealing with tubes of varying sizes.
Dated: 14th
of Amil 1900

page_text: Improvements in Metallic Tube-making Machinery.
I, EDWARD PILKINGTON, of 210, Rookery Road, Handsworth, in the County of
Stafford, Engineer, 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;-
My invention has for its object the construction of simple and effective
machines adapted for the piercing of solid steel or other metal billets, the reduction
of such pierced billets by hot or cold rolling, the reeling or releasing of drawn tubes
from their mandrels, and for other like operations in the manufacture of metallic
tubes.
In the accompanying sheet of explanatory drawings to be hereinafter referred
to; -
Figure 1 is a front elevation and Figure 2 a plan representing my improved
construction and arrangement of the rolls for machines employed for the afore-
said operations in the manufacture of metallic tubes.
In the construction of a machine in accordance with my invention, I mount a
pair of grooved rolls as A and B respectively over and under each other on shafts,
as C and D respectively, which are revolved in opposite directions, as indicated
by the arrows 1 and 2, in any ordinary manner. The said shafts having the
rolls thereon are mounted in housings so arranged that the shafts whilst lying
in horizontal planes are inclined in opposite directions to a vertical plane, the
centre line of the one shaft crossing the centre line of the other at about the
vertical centre line through the rolls. The grooved rolls are each provided with
a single flange as A¹ and B¹ and such flanges are disposed at opposite ends of
their respective rolls when in position.
To pierce a hot solid billet of steel one end is inserted between the grooved
peripheries of the rotating rolls which at once set up a rotation of the billet in
the direction of the arrow 3 at Figure 1, and by simultaneously carrying it
forward in the direction indicated by the arrow 4 at Figure 2 force it on to and
over an ordinary piercing mandrel arranged between and at the back of the
rolls, and thus convert the solid billet E into a hollow bloom or tube use.
The end pressure on the flanges A and B which set up the rotation of the
billet, is carried through the shafts on to suitable thrust bearings, and by thus con-
centrating the frictional resistance produced by such pressure near to the centres
of the shafts, it can be readily overcome with but a small expenditure of the
driving power.
In machines for the rolling or reeling of drawn tubes to release them from
their mandrels, and for other like services, I employ a similar construction and
arrangement of rolls.
I sometimes make the flanges of the rolls separately from the body parts and
mount the matter loosely upon the respective shafts, but in contact with the
flanges, and thus they are revolved only by the tube passing between them.
I arrange the housings with the driving mechanism for the rolls in any con-
venient manner, preferably employing a train or series of the inclined rolls and
shafts as herein-before described, for dealing with tubes of varying sizes.
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 machines for the manufacture of metallic tubes, the Construction and

page_text: arrangement of rolls substantially as and for the purposes described and as illus-
trated.
Dated this 5th day of Var 1899
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham & 25, Cross Street, Manchester.
Agents for Applicant.