Improvements in Making Iron and Steel Tubes, and in Apparatus therefor.
Year: 1893

page_text: Date of Application, 8th Aug., 1893
Complete Specification Left, 7th May, 1894-Accepted, 9th June, 1894
PROVISIONAL SPECIFICATION.
Improvements in Making Iron and Steel Tubes, and in Apparatus
therefor.
I, ALFRED HENRY WILLIAMS, of The Green, Wishaw, in the County of
Lanark, North Britain, Ironmaster, do hereby declare the nature of this invention
to be as follows, that is to say :—
My said invention has for its object, by an improved combination of operations
and apparatus used therein, to make iron and steel tubes in a superior and
economical manner.
In carrying out my invention I roll the metal into a strip having scarfed or
semi-scarfed edges, and cause it on leaving the rolls to at once pass through a
conoidal skelping plate, guide, or die, by which the strip is bended and its edges
are turned up and over in readiness for lap welding.
For the earlier stages of the rolling operation, the rolls employed are like those
ordinarily used for rolling hoop iron or similar strips of iron or steel. When the
edges are to be scarfed in the ordinary form-that is with each scarf or bevil entirely
on one side of the strip or plate the strip or plate is passed between a pair of rolls
one of which is cylindrical and ungrooved whilst the other has formed in it a shallow
groove with bevilled borders. When the edges are to be semi-scarfed-that is
with each border or edge scarfed on both sides, with the extreme edge at the middle
of the thickness of the plate or strip, grooves are made in both rolls each of one
half the depth of the single groove in one roll.
The conoidal skelping plate, guide, or die is placed as closely as is conveniently
possible in front of the finishing rolls, and the strip in being delivered from these
rolls is by their action thrust through the skelping appliance. Lateral guides may
be fixed between the rolls and the skelping appliance to prevent the metal strip
from deviating; and the metal strip may be assisted through the skelping appliance,
especially towards the end of the operation as the after end of the strip is leaving
the rolls, by any convenient drawing appliance acting on the part of the strip that
has passed through the skelping appliance.
Dated this Seventh day of August 1893.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Making Iron and Steel Tubes, and in Apparatus
therefor.
:
I, ALFRED HENRY WILLIAMS, of The Green, Wishaw, in the County of
Lanark, North Britain, Ironmaster, 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 by an improved combination of operations
and apparatus used therein, to make iron and steel tubes in a superior and
economical manner.
'

page_text: In carrying out my invention I roll the metal into a strip having scarfed or
semi-scarfed edges and cause it on leaving the rolls to at once pass through a
conoidal skelping plate, guide, or die, by which the strip is bended and its edges
are turned up and over in readiness for lap welding, the strip immediately there-
after encircling a mandril and passing between small rolls to complete the turning
over of the edges.
And in order that my said invention and the manner of performing the same
may be properly understood I hereunto append two sheets of explanatory drawings,
to be hereinafter referred to, and showing as much of my improved apparatus as is
necessary.
Figures, 1, and, 2, on Sheet, 1, of the drawings are elevations of rolls employed
in carrying out my invention.
Figure, 3, on Sheet, 2, is a side elevation of part of the apparatus.
Figure, 4, is a transverse section, Figure, 5, is a plan, and Figure, 6, is an
elevation, as at right angles to Figure, 5, of the skelping plate.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
For the earlier stages of the rolling operation, the rolls, A, employed are like
those ordinarily used for rolling hoop iron or similar strips of iron or steel. When
the edges are to be scarfed in the ordinary form-that is with each scarf or bevil
entirely on one side of the strip or plate-the strip or plate is passed between a pair
of finishing rolls, one, B, of which is cylindrical and ungrooved whilst the other, C,
has formed in it a shallow groove, D, with bevilled borders and it is in these rolls
that the strip or plate is reduced to the finished thickness. When the edges are
to be semi-scarfed-that is with each border or edge scarfed on both sides, with the
extreme edge at the middle of the thickness of the plate or strip, grooves (not
shown) are made in both rolls each of one half the depth of the single groove in.
one roll.
The rolls, A, and, B, C, are as usual mounted in suitable housings, provided
with the usual adjusting appliances.
In Figure, 3, are shown the finishing rolls, B, and, C, and the plate or strip is by
their action thrust in the direction of the arrow throngh between guides, E, into a
conoidal skelping plate, guide, or die, F, which is mounted on a suitable standard, G,
and placed as closely as is conveniently possible in front of the finishing rolls. The
skelping appliance consists of an outer guide plate, F, bolted together in halves,
and a separate inner piece, H, sufficiently smaller to admit the metal strip between
them the inner piece, H, being prevented from jamming by a projection, J. The
internal shape of the part, F, and the outside of the inner piece, H, are flat where
the metal strip enters, and are shaped so as to bend the strip, and turn up its edges
as it is thrust onwards. The metal strip issues from the skelping appliance,
cylindrical in form, the end of the inner piece, H, being round and serving as a
mandril and the skelp enters between two circularly grooved rolls, K, by which the
bevilled edges of the strip are laid more evenly and fairly together in a position for
lap welding. The metal strip may be assisted through the skelping appliance, F,
especially towards the end of the operation as the after end of the strip is leaving
the rolls, B, and, C, by any convenient drawing appliance acting on the part of the
strip that bas passed through the skelping appliance.
It is obvious that with the arrangements herein before described the strip is rolled
and bended into the tubular form without reheating.
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 :-
1. The improved process for making iron or steels tubes in which metal strips are
rolled with scarfed edges, and then thrust by the action of the rolls and drawn
through a skelping appliance or die for bending the metal strip into tubular or
other form substantially as and for the purposes hereinbefore described.

page_text: 2. In making iron and steel tubes the combination of the scarfing and other rolls.
and their accessory parts with the skelping appliance substantially as hereinbefore.
described.
Dand L: Tie "
A
EDMUND HUNT,
Applicant's Agent.