Improvements in or relating to the Method of and Means for Jointing or Coupling Pipes and Tubes.
Year: 1895

page_text: Date of Application, 11th June, 1895
Complete Specification Left, 27th Feb., 1896-Accepted, 11th Apr., 1896
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Method of and Means for
Jointing or Coupling Pipes and Tubes.
I, JOHN HOLMES of Bottom of Gate, Honley, near Huddersfield, Yorkshire,
Tinner do hereby declare the nature of this invention to be as follows:-
My invention has reference to the method of and means for making a tight and
secure joint between pipes or tubes used for the conveyance of water, steam and
other liquids or fluids.
One common method of making such joints heretofore has been to bend or roll
a short length of metal to the internal diameter of the pipes to be joined together
into the ends of which it was inserted so as to cover the junction and protect and
keep in position the india rubber washer or packing ring secured between the ends
or flanges of said pipes. It is found in practice that the short tube frequently
gets displaced or moved into one or other of the two pipes when in use, or when
making the joint, and thus not only exposes the rubber washer or packing ring to
the liquids or gases, but removes the support from said washer, which is therefore
liable to get over the mouths of the pipes and obstruct or cut off the circulation
therethrough. The longitudinal space or opening left between the opposing or
unjoined edges of the bent tube is also objectionable as it leaves a portion of the
rubber washer unprotected.
The object of my improvements is to make the said joints or connections perfectly
tight and permanent.
For this purpose I employ a short tube or sleeve composed of copper or other
suitable metal either drawu, bent, rolled or otherwise formed to the diameter
required. If the tube is bent or rolled, the opposing longitudinal edges are made
to overlap each other and are brazed or similarly secured together. In the middle
or centre of the said tube and on the periphery thereof I form an annular swell,
rib or enlargement of larger diameter than that of the pipes or tubes to be joined
together. The said rib or enlargement may be rounded, bevilled, or wedge shaped
un one or both sides, or the tube may be made taper from one or both ends to the.
centre. In coupling the pipes together, the short tube is inserted into the end of
one of the pipes and pushed forward until the swell or enlargement thereon abuts
against, or wedges itself in, the mouth of the pipe, then the rubber washer or
packing ring and the second pipe are passed onto the projecting end of the short
tube or sleeve and the two pipes bolted or secured together in the ordinary way.
By the method and means described, the joint or coupling when once made is,-
excepting for renewals-permanent, it being impossible for the short tube to get
out of place or the rubber washer to move across and obstruct the thoroughfare.
The rubber washer or packing ring is also protected on all sides of the tube from
the gases or liquids passing through the pipes.
Dated this 8th day of June 1895.
:
TASKER & CROSSLEY,
Huddersfield, Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to the Method of and Means for
Jointing or Coupling Pipes and Tubes.
I, JOHN HOLMES, of Bottom of Gate, Honley, near Huddersfield, Yorkshire,
Tinner, 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 :-
My invention has reference to the method of and means for making a tight and
secure joint between pipes or tubes used for the conveyance of water, steam and
other liquids or fluids.
One common method of making such joints heretofore has been to bend or roll
a short length of metal to the internal diameter of the pipes to be joined together
into the ends of which it was inserted so as to cover the junction and protect and
keep in position the india rubber washer or packing ring secured between the ends
or flanges of said pipes. It is found in practice that the short tube frequently
gets displaced or moved into one or other of the two pipes when in use, or when
making the joint, and thus not only exposes the rubber washer or packing ring to
the liquids or gases, but removes the support from said washer which is therefore
liable to get over the mouths of the pipes and obstruct or cut off the circulation
therethrough.
The longitudinal space or opening left between the opposing or unjoined edges
of the bent tube is also objectionable as it leaves a portion of the rubber washer
unprotected.
The object of my improvements is to make the said joints or connections perfectly
tight and permanent.
For this purpose I employ a short tube or sleeve composed of copper or other
suitable metal either drawn, bent, rolled or otherwise formed to the diameter
required. If the tube is bent or rolled the opposing longitudinal edges are made
to overlap each other and are brazed or similarly secured together. In the middle
or centre of the said tube and on the periphery thereof I form an annular swell,
rib or enlargement of larger diameter than the internal diameter of the pipes or
tubes to be joined together. The said rib or enlargement may be rounded,
bevilled, or wedge shaped on one or both sides, or the tube may be made taper
from one or both ends to the centre. In coupling the pipes together the short
tube is inserted into the end of one of the pipes and pushed forward until the swell
or enlargement thereon abuts against or wedges itself in the mouth of the pipe,
then the rubber washer or packing ring and the second pipe are passed on to the
projecting end of the short tube or sleeve and the two pipes bolted or secured
together in the ordinary way.
In the accompanying drawings forming a part of this Specification,
Figs. 1 and 2 are respectively longitudinal and end elevations of my improved
tubular device or nipple for making a tight and secure joint between pipes or
tubes used for the conveyance of water, steam, and other liquids, fluids, or gases.
Fig. 3 is longitudinal sectional elevation shewing the method of applying the
nipple to make a joint between two pipes or tubes.
Figs. 4 and 5 shew the tubular device or nipple slightly modified.
Referring to the drawings, A represents the short tubular device or nipple
composed of copper or other suitable metal or material either drawn, bent, rolled
or otherwise formed to the diameter required; if bent or rolled the opposing
longitudinal edges are made to overlap each other and are then brazed or similarly
secured or welded together.
,
On the periphery of said tube or nipple A and by preference about midway of
its length, I form an enlargement or annular swell or rib B of larger diameter than

page_text: the internal diameter of the pipes or tubes to be joined or coupled together, said rib
or swell being formed by first corrugating the tube where required and subsequently
nipping the corrugated portion between two surfaces so as to flatten it as shewn in
Figs. 1 and 3, or other suitable methods may be adopted for such purpose. The
rib or swell B may be rounded, or it may be bevilled or wedge shaped on both
sides as shewn in Fig. 4, or on one side only; or the tube or nipple can be made
taper from one or both ends to the centre as shewn in Fig. 5.
The tube or nipple A will answer for all pipes or tubes whose internal diameters
are larger than the diameter of the tube itself, and less than that of the annular
rib or flange B, and in applying it to form the joint when connecting or coupling
two pipes together, as illustrated in Fig. 3, one end of said tube or nipple is
pushed into the end of pipe C until the flange or rib thereon abuts against or
wedges itself in the mouth of the pipe, then the rubber washer or packing ring D
and the second pipe E are passed over the projecting end of the tube or nipple
and the two pipes bolted or secured together in the ordinary way, the short tube A
thus covering up and protecting the junction between the two pipes from the
internal thoroughfare and making a tight and secure joint, whilst the rib or
enlargement B prevents the tube or nipple getting out of place or into one of the
pipes as frequently happens when the plain split tubes are used and likewise avoids
any liability of the washer or packing ring D moving across or over the ends or
mouths of the pipes and obstructing the thoroughfare. The rubber washer or
packing ring D is also protected on all sides of the tube from the gases or liquids
passing through the pipes. In some cases it may not be necessary to employ the
washer or packing ring.
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:-
The tubular device or nipple A having a flange, rib or enlargement such as B
on its periphery substantially as shewn and described and for purposes herein set
forth.