Improvements in the Manufacture of Flanged Tubes or Pipes.
Year: 1896

page_text: Date of Application, 2nd Sept., 1896
Complete Sannifination IEL 1
1007
J
1007
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Flanged Tubes or Pipes.
I, WILLIAM MALAM, of 911 Ashton Old Road, Fairfield, near Manchester, in the
County of Lancaster, Engineer, do hereby declare the nature of this invention to be
as follows:-
This invention relates to the manufacture of tubes or pipes provided with a flange
at one or both ends the object of the invention being to provide a strong solid flange
of any required thickness at the end or ends of the tube.
The invention consists principally in forming the flange entirely by longitudinal
pressure by upsetting or "jumping" the same, either by hydraulic or other suitable
machinery or even by hand and either by percussion or continuous pressure.
This may be done by hydraulic pressure at one or more operations or heats by
suitably formed dies, I prefer however at the first heat to thicken the end of the
tube say to about twice the thickness of the tube, at the next heat to about double
this thickness again, and to finish the flange at the third heat.
Or I may force up the end of the tube into a flange at once, allowing the metal to
crimp or bend in any direction it may take, and I finish the flange by welding it in
suitable dies or the like.
Or I may force up or upset the end of the tube by a roller or rollers on a radially
disposed axis capable of rolling down the end or edge of the tube, under pressure
lengthwise of the said tube.
In some cases also I corrugate the tube near to the flange formed as above
described, and I thus allow for expansion and contraction in the length of the tube
without straining the joints between the flanges.
By the above method of forming the flanges I am able to obtain flanges of any
desired strength, which it was difficult or impossible to do by the old method of
opening out the end of a tube either thickened or not.
Dated this 1st day of September 1896
Improvements in the Manufacture of Flanged Tubes or Pipes.
I, WILLIAM MALAM, of 911 Ashton Old Road, Fairfield, near Manchester, in the
County of Lancaster, 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 :-
This invention relates to the manufacture of metal tubes or pipes provided with a

page_text: flange at one or both ends, the object of the invention being to provide a strong solid
flange of any required thickness at the end or ends of the tube."
The invention consists principally in forming the flange entirely by longitudinal
pressure by upsetting or "jumping" the same by the processes hereafter described,
either by hydraulic or other suitable machinery or even by hand and either by
percussion or continuous pressure.
This may be done. by rolling at one or more operations or heats as hereafter
described; but at two or more operations when hydraulic or continuous pressure or
percussion alone is used, and in such cases I employ suitably formed dies for each
operation, and at the first heat I thicken the end of the tube say to about twice the
thickness of the tube, at the next heat to about double this thickness again, and if
required I may finish the flange at the third heat; the number of such dies and
processes or heats will depend on the width of the flange in proportion to the
thickness and size of the tube on which it is to be formed.
On Sheet 1 of the annexed drawings, Fig. 1 shews a tube to be flanged, Fig. 2
shews one end thickened after a first heating; Fig. 3 shews it thickened further after
a second heat, and Fig. 4 shews that how if it is desired to make the flange broader in
proportion to the thickness of the tube to be flanged the said flange may be finished
after a third heating.
. The flange may be formed in a similar manner to that above described by
percussion, but in this case (say when hand forging) it may be preferable to thicken
the tube gradually around its circumference, taking care that after thickening at one
point the next part operated on is diametrically opposite the same.
Or I may force up or upset the end of the tube at one or more heats by a roller or
rollers on a radially disposed axis capable of rolling down the end or edge of the tube,
under pressure lengthwise of the said tube.
This process will be readily understood on reference to Sheet 2 of the annexed
drawings which shews apparatus to be used therefore.
Fig. 5 is an end elevation thereof, Fig. 6 a side view in section; and Fig. 7 a plan
in section.
The right hand half of Figs. 5 and 7 shew the tube a before the flanging has been
formed, and the left hand half of the same figures shewing the flange a¹ completely
formed on the end of a.
.bb are two conical rollers carried by a suitable face plate c on radially disposed
axes. Pressure lengthwise of the tube a may be applied to the face plate c or to the
tube a which is supported by a tube x loose on the rotating shaft d.
e e are rollers for rolling the edge of the flange as it is formed. These rollers e
are carried on brackets capable of receding upon the screws e¹ from the centre of
rotation of the face plate c as the flange is formed, the screws el being turned by
hand or otherwise by the wheels e². It is evident that the tube may, if preferred,
have its end thickened by pressure or percussion before rolling the flange thereon.
In some cases also. I may corrugate the tube near to the flange formed as above
described, and I thus allow for expansion and contraction in the length of the tube
without straining the joints between the flanges.
By the above methods of forming the flanges I am able to obtain flanges of any
desired strength, which it was difficult or impossible to do by the old method of
opening out the end of a tube either thickened or not.
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 :-
1. Upsetting a flange upon the end of a metal tube or pipe by continuous
pressure or percussion at two or more operations by first thickening the end at one
heat to about twice the thickness of the tube and then reheating the same before
further formation of the said flange, suitable dies being employed at each operation,
substantially as hereinbefore described and illustrated by the annexed drawings.

page_text: 2. Upsetting a flange upon the end of a metal tube or pipe by rolling down the
end or edge of the said tube under pressure lengthwise of the same, substantially as
herein before described and illustrated by the drawings annexed.
Dated this 31st day of May 1897.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.