Year: 1899

page_text: Date of Application, 12th Oct., 1899
Complete Specification Left, 18th June, 1900-Accepted, 4th Aug., 1900
I, DAVID MEIN NESBIT, of 12, Great James Street, Bedford Row, London,
W.C., Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in connection with joints for use upon
metallic pipes and tubes, the object being to produce a joint that can be readily
applied to a metal pipe or tube and expeditiously tightened or released by
means of unskilled or ordinary labour.
In carrying my invention into effect in one convenient manner when con-
structing a joint or coupling for use upon a metal tube I turn or form the end
of the tube with a slight taper, and on to this tapered end I secure a collar or
coupling flange piece, this collar being formed with a projecting ring or flange
on the outside for the purpose of receiving the loose neck collar through which
the bolts are to pass, and by means of which connection or coupling is made
with a like neck collar carried on a companion collar attached to the end of the
other tube which is to be united by the coupling.
I form one of my tapered collars preferably with a projecting lip or ring
which enters into a similarly formed recess or groove provided upon the face
of the companion collar so that the one collar rests upon the projecting ring or
spigot piece of the other, thereby preserving correct alignment and securing the
jointing material from falling or working into the interior of the pipe.
Between the meeting surfaces of the tapered collars secured to the tubes I
introduce a washer or ring of india-rubber, asbestos, metal or other suitable
material, or I may paint or coat the surfaces with red lead or the like for forming
the jointing ring between the meeting collars.
I arrange bolt holes with lugs or projecting faces upon the ring uniting
collars and pass the bolts through from one to the other, employing nuts and
washers in the usual way for effecting tight contact between the meeting sur-
faces in the jointing material.
I vary the number of bolts and the nature of the packing or jointing material
to suit the purpose for which the pipe or tube is intended and the pressure of
the liquid, steam or gas which is to pass through the same.
I modify the form and shape of my coupling collars and the method of secur-
ing the ends of the tube or pipe to the same to suit the size and material of the
tube which is to be united. I sometimes screw or thread the interior of the
collars and similarly screw the exterior or end of the tube attached to the same,
preferably making a slight taper upon the thread when so connecting them.
I may also expand, rivet or force over the end of the tube to fit a recess or
chamfer formed in the face of the collar when employing and attaching my
collars to pipes of a material which can be readily expanded and riveted over.
I may sometimes form my collars with an interrupted portion for the pur-
pose of enabling the uniting collars to pass over the interrupted space from the
outside and then to be turned round slightly to come in contact with the
shoulders or flanges formed upon the ring and upon the collar: this system of
| providing a break or interruption of the projecting collar enables me to apply

page_text: my improved method of coupling to pipes which have their ends cast with a
projection or coupling piece thereon and obviates the necessity for drilling holes
in the end of the flanges formed upon the pipe or the handling or placing in
position of the pipes with each projecting flange formed in one piece upon them.
I modify the form of my collar or flange piece to suit the size and material
of pipe to which it is to be attached sometimes making it in halves for clipping
together over a pipe which it would be difficult to disturb or join were a solid
ring employed.
Similarly I may make my jointing surface part plain or parallel or part
tapered, or I may make grooves or indentations upon the jointing surfaces for
obtaining a better grip when necessary.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.
Improvements in Joints for Metal Pipes and Tubes.
I, DAVID MEIN NESBIT, of 12, Great James Street, Bedford Row, London,
W.C., Engineer, do hereby declare the nature of this invention, and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
My invention relates to improvements in connection with joints for use upon
metallic pipes, and tubes, the object being to produce a joint that can be readily
applied to a metal pipe or tube and expeditiously tightened or released by
means of unskilled or ordinary labour.
In the two accompanying sheets of explanatory drawings, Figure 1 is an end
elevation of one form of my improved coupling and Figure 2 is a longitudinal
section of the same upon the line X Y Z of Figure 1. Figure 3 is an end eleva-
tion and Figure 4 a longitudinal section of a form of my coupling on which
solid or shouldered ends are provided upon the tubes or pipes.
Figures 5 and 6 are similar views of a modified form of my solid or shouldered
end coupling.
In carrying my invention into effect in one convenient manner when con-
structing a joint or coupling for use upon a metal tube I turn or form the end
of the tube with a slight taper A and on to this tapered end I secure a collar
or coupling flange piece B, this collar being formed with a projecting ring or
flange C on the outside for the purpose of receiving the loose neck collar D
through which the bolts are to pass, and by means of which connection or
coupling is made with a like neck collar E carried on a companion collar F
attached to the end of the other tube which is to be united by the coupling.
I form one of my tapered collars B preferably with a projecting lip or ring b
which enters into a similarly formed recess or groove f provided upon the face
of the companion collar F so that the one collar rests upon or over the project-
ing ring or spigot piece of the other, thereby preserving correct alignment and
securing the jointing material H from falling or working into the interior
of the pipe.
Between the meeting surfaces of the tapered collars secured to the tubes I
introduce a washer or ring H of india-rubber, asbestos, metal or other suit-
able material, or I may paint or coat the surfaces with red lead or the like
for forming the jointing ring between the meeting collars.

page_text: I arrange bolt holes with lugs or projecting faces K upon the ring uniting
collars and pass the bolts L through from one to the other, employing nuts and
washers in the usual way for effecting tight contact between the meeting sur-
faces and the jointing material.
I vary the number of bolts and the nature of the packing or jointing material
to suit the purpose for which the pipe or tube is intended and the pressure of
the liquid, steam or gas which is to pass through the same.
I modify the form and shape of my coupling collars and the method of secur-
ing the ends of the tube or pipe to the same to suit the size and material of the
tube which is to be united. I sometimes screw or thread the interior of the
collars and similarly screw the exterior or end of the tube attached to the same
preferably making a slight taper upon the thread when so connecting them.
I may also expand, rivet or force over the end of the tube to fit a recess or
chamber formed in the face of the collar when employing and attaching my
collars to pipes of a material which can be readily expanded and riveted over.
I sometimes as shown in Figures 3, 4, 5, and 6 form my collars with an in-
terrupted portion M for the purpose of enabling the uniting collars to pass
over the interrupted space from the outside and then to be turned round slightly
to come in contact with the shoulders or flanges N formed upon the ring end
upon the collar 0; this system of providing a break or interruption of the pro-
jecting collar enables me to apply my improved method of coupling to pipes
which have their ends cast with a projection or coupling piece thereon and
obviates the necessity for drilling holes in the end of the flanges formed upon
the pipe or the handling or placing in position of the pipes with each project-
ing flange formed in one piece upon them.
I modify the form of my collar or flange piece to suit the size and material
of pipe to which it is to be attached sometimes making it in halves for clipping
together over a pipe which it would be difficult to disturb or join were a solid
ring employed.
Similarly I may make my jointing surface with a part plain or parallel or part
tapered, or I may make grooves or indentations upon the jointing surfaces for
obtaining a better grip when necessary.
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. The improved coupling having loose uniting collars for use upon tubes
or pipes substantially as hereinbefore described and as illustrated in the accom-
panying drawings.
2. In a coupling for use upon tubes or pipes the combination of a loose ring,
collar or flange with a collar or shoulder formed upon or attached to the end
of the tube or pipes, substantially as herein before described and as illustrated
in Figures 1 and 2 of the accompanying drawings.
3. In a coupling for use upon tubes or pipes the arrangement of an inter-
rupted collar or shoulder formed upon or attached to the end of the tube or
pipe for receiving a loose collar or ring flange formed with a similarly inter-
rupted boss, substantially as and for the purposes herein before described and
as illustrated in Figures 3, 4, 5 and 6 of the accompanying drawings.
1-11
C T1000
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.