Improvements in the Manufacture of Tubes.
Year: 1894

page_text: Date of Application, 30th Aor., 1894
Complete Specification Left, 28th Jan., 1895-Accepted, 9th Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Tubes.
We, FREDERIC LENNOX BROUGHTON, of 66 Holyhead Road, Handsworth,
in the County of Stafford, Iron-manufacturer, and JAMES FIELDHOUSE of
124 St. Paul's Road, Smethwick, in the County of Stafford, Iron-roller, do
lereby declare the nature of this invention to be as follows :-
This invention relates to improvements in the manufacture of close jointed or
other similar tubes.
The object of our invention is to form such tubes completely by rolling strips of
cold steel or other metal through suitably shaped rolls, and thus by dispensing
with the employment of dies, mandrils, or like tools, to produce the tubes more
readily, and with closer joints than by the ordinary processes of manufacture.
In carrying our invention into effect we first pass the flat strip of mild steel.or
other metal through a pair of rolls having suitably projecting and grooved surfaces,
to roll the strip into a semi-circular or like form. The strip is then passed.
edgeways through other roHs by which it is rolled into an oval or like tubular
shape, and finally the oval tube is again passed edgeways through finishing rolls
for forming it into the complete tube of the desired circular configuration.
We preferably fix the series of rolls for the manufacture .. tubes by our
improved process, in a tandem or like arrangement, in order that the flat strip of
metal may be fed in at one side or end of the series, and rolled out at the other
end as a completely finished tube. With this tandem or series arrangement the
middle pair or the ovalling rolls are fixed vertically to receive the skelp edgeways.
from the first pair of horizontal rolls. To assist in the production of a smooth and
planished surface on the exterior of the tube, we preferably drive the finishing
rolls, or the last pair of a series, at a higher speed than the preceding rolla. We
thus cause the peripheries of the finishing rolls to travel faster than the advancing
tube, and so produce a rubbing action between their respective surfaces.
We mount the rolls in suitable housings provided with adjusting screws in the
usual manner, and drive the same by spur or like gearing from a steam or other
motive power engine.
We do not limit the application of our invention to any one form or shape of the
rolls employed, or to any particular arrangement of the same in series or otherwise;
but modify the number, form, and arrangement of the rolls, when adapting our
improved process to the manufacture of varying tubes.
Dated this 30th dex of April 1904
::
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.

page_text: improvements in the Manufacture of Tubes.
We, FREDERIC LENNOX BROUGHTON, of 66 Holyhead Road, Handsworth,
Iron-manufacturer, and JAMES FIELDHOUSE, of 124 St. Paul's Road, Smethwick,
Iron-roller, both in the County of Stafford, 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 improvements in the manufacture of close jointed or
other similar tubes.-
The object of our invention is to completely form such tubes by rolling strips of
cold or heated steel or other metal through a number of suitably shaped rolls, and
thus by dispensing with the employment of dies, mandrils, or like tools, to produce
the tubes more readily and with closer joints than by the ordinary processes of
manufacture.
In the accompanying sheet of explanatory drawings to be hereinafter
referred to-
Figure 1 is a side elevation and Figure 2 a plan representing one convenient
arrangement of the rolls for manufacturing tubes by our improved process.
The same reference letters in the two views indicate the same parts.
then
In carrying our invention into effect, we first pass the flat strip. A of mild steel
or other metal through a pair of rolls B B the upper roll B having a concave, and
the bottom roll B' having a convex semi-circular surface or periphery, for the
purpose of rolling the strip into a semi-circular or like form. The strip
passed edgeways through a second pair of rolls C C1, both having grooved or
concave semi-circular peripheries, by which it is rolled into an oval or like tubular
shape; and finally the oval tube is passed through finishing rolls such as D. D' for
forming it into the complete.tube of the desired circular configuration.
We preferably fix the rolls for the manufacture of tubes by our improved process,
in a tandem or like arrangement as shown'at Figures 1 and 2, in order that the flat
strip of metal may be fed in at one side or end of the series, and rolled out at the
other end as a completely finished tube. With this tandem or series arrangement
the middle pair or the ovalling rolls C. C' are fixed vertically or at right angles to
receive the skelp edgeways from the first pair or the horizontal rolls B B'. To
assist in the production of a smooth and planished surface on the exterior of the
tube, we preferably drive the finishing rolls D D' or the last pair, of a series, at a
higher, speed than the preceding rolls. We thus cause the, peripheries of the
finishing rolls D D' to travel faster than the advancing tube, and so produce, a
rubbing action between their respective surfaces.
"We mount the rolls with suitable housings provided with adjusting screws.in the
usual manner, and drive the same-1 by spur or like gearing from a steam or other
motive power engine. Suitable guides are arranged and fixed between the rolls
for the purpose of supporting and guiding the skelp in its passage through
the rolls.
We sometimes-arrange our tube forming rolls adjacent to or in connection with
the strip producing rolls, in order that the strips on leaving the rolls may be
immediately passed through, the tube rolls. We thus produce the strips and form
the tubes with but one heating of the metal.
.
We do not limit the application of our invention to any one form or shape of the
rolls employed, or to any particular arrangement of the same in series or otherwise,
but modify the number, form, and arrangement of the rolls, when adapting our
improved process to the manufacture of varying tubes.

page_text: Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:.
1. The method of manufacturing tubes without the use of a die, mandril, or like
tool, by means of rolls arranged for rolling the tube strip or the skelp into an oval
or like shape and for forming or finishing the same to a truly circular configuration,
substantially as herein described.
2. In tube making machinery, the use of rolls for the purpose of rolling the tube
strip or the skelp into an oval or like shape prior to its formation into the
completely circular tube, substantially as herein described.
3. In tube making machinery the combination and arrangement of horizontal
and vertical rolls in series substantially as and for the purposes hereinbefore
described and as illustrated in the accompanying drawings.
4. The combination of strip producing rolls with a series of horizontal and
vertical tube forming rolls arranged substantially as and for the purposes herein-
before described, and as illustrated in the accompanying drawings.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicants.