Improvements in or connected with Joints or Connections for Pipes or Tubes.
Year: 1889

page_text: Date of Application, 25th Oct., 1889-
Complete Specification Left, 19th July, 1890-4ccepted. 23rd Aug., 1890
PROVISIONAL SPECIFICATION.
Improvements in or connected with Joints or Connections for
Pipes or Tubes.
We, ANDREW EADIE, and JOHN TANNAHILL, of the Clydesdale Tube Works,
Rutherglen, in the County of Lanark, North Britain, Tube Manufacturers, do hereby
declare the nature of this Invention to be as follows, that is to say :-
This Invention has for its object to provide in an improved and simple manner for
the jointing or connecting of pipe or tube lengths by means of bolted flanges, the
improved arrangements admitting of the flanges being easily but securely fixed where
the pipes or tubes are to be used, or at any time, so that the pipes or tubes can be
packed in the smallest possible space for conveyance to a distance.
In carrying out the Invention the inner surface of each flange ring, that is-the
surface which is to fit tightly on the end of a pipe or tube is made with a slightly
indented surface of any suitable simple form presenting one or more curved or
angular concavities; and when required a flange ring is fixed by placing it on the
pipe or tube and expanding the latter in a manner to make it fit tightly in the indented
part of the flange ring. The expanding is offected by means of any suitable con-
struction of roller tube expander, the rollers being shaped with convex or projecting
parts to force out the metal of the pipe or tube into the indentation of the flange ring,
and the expanding tool being fitted with wedges or equivalent devices for forcing
the rollers outwards as the expanding operation proceeds.
Dated this Twenty-third day of October 1889.
EDMUND HUNT,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in or connected with Joints or Connections for
Pipes or Tubes.
We, ANDREW EADIE, and JOHN TANNAHILL, of the Clydesdale Tube Works,
Rutherglen, in the County of Lanark, North Britain, Tube Manufacturers, 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 :-
This Invention has for its object to provide in an improved and simple manner for
the jointing or connecting of pipe or tube lengths by means of bolted flanges, the
improved arrangements admitting of the flanges being easily but securely fixed where
the pipes or tubes are to be used, or at any time, so that the pipes or tubes can be
packed in the smallest possible space for conveyance to a distance.
In carrying out the Invention the inner surface of each flange ring, that is, the
surface which is to fit tightly on the end of a pipe or tube is made with a slightly
indented surface of any suitable simple form presenting one or more curved or
angular concavities; and when required a flange ring is fixed by placing it on the
pipe or tube and expanding the latter in a manner to make it fit tightly in the
indented part of the flange ring. The expanding is effected by means of any suitable
construction of roller tube expander, the rollers being shaped with convex or pro-
jecting parts to force out the metal of the pipe or tube into the indentation of the
flange ring, and the expanding tool being fitted with wedges or equivalent devices
for forcing the rollers outwards as the expanding operation proceeds.
And in order that the said Invention and the manner of performing the same may
be properly understood we hereunto append a sheet of explanatory drawings to be

page_text: hereinafter referred to and showing a longitudinal section of a tube or pipe length
as fitted with our improved flange, an expanding tool being shown in position.
The inner surface of the flange ring, A, that is, the surface which is to fit tightly
on the end of the pipe or tube, B, is shown as slightly indented and the end of the
pipe or tube, B, is expanded in a manner to make it fit tightly in the indented part
of the flange ring, A. The expanding is effected by means of a roller tube expander
the rollers, C, being held in a slotted cylinder, D, and shaped with enlarged middle
parts to force out the metal of the pipe or tube, B, into the indentations of the flange
ring, A. The rollers, C, are forced outwards as the expanding operation proceeds by
means of conical or wedge-shaped rings, E, on a spindle, F, extending through the
expander and having at its inner end a disk, G, fitting in the tube and serving to
steady the tool. The spindle, F, passes through the neck, H, of the expander, which
neck is squared externally to receive a spanner by means of which the expander is
turned. A nut, J, screwed on the outer end of the spindle, F, against the end of
the neck, H, is used for drawing the wedge rings, E, together so as to force out the
rollers, C, a collar, K, on the spindle, F, acting on the inner wedge ring, E.
Having now particularly described and ascertained the nature of the said Inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
:-
d
Providing for forming joints or connections for pipes or tubes, by making Bange
joint rings with indentations in their inner surfaces and fixing the flanged joint
rings by expanding the ends of the pipe or tube lengths so as to fit tightly in such
indentations substantially as hereinbefore described.
Dated this Eighteenth day of July 1890.
EDMUND HUNT,
Applicants' Agent.