IMPROVEMENTS IN MACHINERY TO BE EMPLOYED IN BENDING OR TURNING UP THE STRIPS
Year: 1874

page_text: LETTERS PATENT to James Evans, of West Bromwich, in the County
of Stafford, Tube Manufacturer, for the Invention of “ IMPROVEMENTS
IN MACHINERY TO BE EMPLOYED IN BENDING OR TURNING UP THE STRIPS OR
Scaled the 18th September 1874, and dated the 24th March 1874.
PROVISIONAL SPECIFICATION left by the said James Evans at the
Office of the Commissioners of Patents, with his Petition, on the
24th March 1874.
I, JAMES EVANS, of West Bromwich, in the County of Stafford, "Tubo
Manufacturer," do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MACHINERY TO BE EMPLOYED IN BENDING OR TURNING UP THE
STRIPS OR SKELPS OF METAL TO BE MADE INTO TUBES," to be as follows, that is
to say:-
-
This Invention consists of a pair of guide rolls suitably mounted to

page_text: The bell die is constructed in two parts, and is capable of expansion
or contractron to suit varying sizes of tubes. When once adjusted the
two parts are secured in position, and it thus becomes a fixed die.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Evans in the Great Seal Patent Office on
the 23rd September 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
EVANS, of West Bromwich, in the County of Stafford, Tubo Manufac-
turer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of March, 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 successors,
give and grant unto me, the said James Evans, Her special license that
I, the said James Evans, my executors, administrators, and assigns,
or such others as I, the said James Evans, my executors, admini-
strators, 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, usc, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN MACHINERY
TO BE EMPLOYED IN BENDING OR TURNING UP THE STRIPS OR SKELPS OF METAL TO BE
MADE INTO TUBES," upon the condition (amongst others) that I, the said
James Evans, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and scals, should
particularly describe and ascertain the nature of the said Invention, and,
in what manner the same was to be performed, and cause the same.to
be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said James Evans, do hereby declare
the nature of my said Invention, and in what manner the same is to

page_text: be performed, to be particularly described and ascertained in and by
the following statement, that is to say:
This Invention consists of a pair of guide rolls suitably mounted to
receive a strip of metal as it emerges from the furnace, and conduct it
to a bell die fixed in front of the rolls, through which bell die the strip
is drawn by the tongs, and in its passage is bent or turned round into a
tubular form.
The bell die is constructed in two parts, and is capable of expansion
or contraction to suit varying sizes of tubes. When once adjusted the
two parts are secured in position and it thus becomes a fixed die.
I will now proceed to describe the nature of my said Invention more
fully in detail by the aid of the Drawings hereunto annexed, reference
being had to the letters and figures marked thereon.
Figure 1 is a side elevation of a draw bench fitted with my improved
3 machinery to be employed in bending or turning up and welding the
strips or skelps of metal to be made into tubes.
Figure 2 is a section through the improved portions shewn detached
from the draw bench, and to a larger scale; Figure 3 being a front
elevation of the same.
(a) and (b) are a pair of rolls suitably mounted in bearings. The
roll (a) is formed concave in outline in the direction of its length, as in
Figure 3, and it is capable of being raised and lowered by means of a
pair of screws (c) fitted in the guides (d). The lower roll (b) is parallel
in its diameter, and works in stationery bearings. The two rolls (a) and
(b) are for the purpose of receiving the strip or skelp as it issues from
the mouth of the furnace (e), and by the peculiar form of the upper
roll (a) the strip or skelp will be partially bent or turned over at the
edges. The strip or skelp then passes on to what I have termed a bell-
shaped dic (f) containing a mandril (9), shewn separately in side cleva-
tion, Figure (4). The strip or skelp is drawn by the tongs (p) through
the bell-shaped die (f) and over the mandril (9), and in its passage
becomes bent or turned into a tubular form, the open side of the tube
being at the bottom. The bell-shaped die (f) is constructed in two
parts, which are adjusted together for use, separate dies being made to
3 suit the varying sizes of tubes. In connection with the bell-shaped
die (f) I employ a welding tool or dic (4) moving as a vertical slide in

page_text: grooves cut in the bell-shaped die (f), and operated by a weighted
lever (i) and handle (k), the weighted lever (i) working on an axis (7) in
the standard (m), so that as the bent or turned skelp issues from the
die (f) off the mandril (9) the welding tool or die (h) is brought down
upon the turned skelp, thus. compressing it and causing the meeting
edges of the skelp to butt and become welded. It will be seen that when
the welding tool or die (h) is down in position for work it forms, together
with the bell-shaped dic, a complete oval or partially round dic at the
point (n), Figure 2, and this is where the welding operation takes place.
The remaining portions of the machine illustrated are the ordinary parts
connected with the draw bench, and require no further description..
Having thus described the object and nature of my said Invention,
and the manner in which the same is to be carried into effect, I claim,
without limiting myself to these precise details, -
. Firstly. The construction and arrangement of the two rollers (a) and 1
(b) for the purpose of receiving the strip or skelp, and for partially
turning the same.
. Secondly. I claim the combination of the bell shaped die (f), the
mandril (9), and the welding tool (/) for the purpose of turning and
welding the skelp or strip into a tubular form.
In witness whereof, I, the said James Evans, have hereunto set
·
my hand and scal, this Twenty-first day of September, in the
year of our Lord One thousand eight hundred and seventy-four..
JAMES EVANS. (L.S.)
2