IMPROVED COUPLING OR JOINT FOR PIPES OR TUBES
Year: 1885

page_text: I, DUNCAN FAULDS, 14 York Street, Barrow-in-Furness in the County of
Lancaster, Engineer do hereby declare the nature of my said invention for
"IMPROVED COUPLING OR JOINT FOR PIPES OR TUBES " to be as follows :—
The object of this invention is to provide a coupling or joint or means for easily
and securely fastening together the ends of pipes when the end of one or both of
the pipes is of a flexible or pliant nature. It is chiefly designed for use in attaching
india rubber or canvas piping or hose to a metal pipe, but may in some instances
be found applicable for use with lead piping.
It consists of a conical or tapered bush, in sections of internal diameter to fit the
size of piping to which it is to be applied with a screw thread cut on the outside
and a nut tapered internally and with a screw thread corresponding with that on
the tapering bush. The bush is cut longitudinally into a number of parts
preferably three to allow of space for compression. As the internally tapered nut
is screwed up on the sections of the bush, the latter is compressed or drawn
together until the edges of the several sections touch each other. The edges of the
several sections may run parallel to each other, and to the longitudinal axis of the
bush, but I prefer to make each edge with three faces, two running parallel to
the longitudinal axis and the other at right angles thereto or otherwise, the one
cut or dovetailed into the other. One or two pins may be placed on the internal
surface to prevent the sections of the bush from slipping, and to indicate the
position of the sections in relation to each other.
In carrying out the invention when a joint is to be made between a flexible
and a metal pipe, the end of the metal pipe is inserted into the flexible one, the
tapered sectional bush placed in position over the flexible pipe and the nut screwed
onto it until the whole is screwed up tight, and the joint secure. When it is
intended for a movable coupling, the bush may be cemented or otherwise attached
to the flexible tube to prevent the bush falling off. When the nut is unscrewed
or taken off, when the connection has to be remade, the metal pipe is again inserted
and the nut screwed up. The bush and nut may be applied in a similar way to
the end of a thin lead pipe, or it may in some instances be soldered thereto and the
end of the pipe cut for a short distance to correspond with the sections of the
conical bush.

page_text: By the use of this invention, the necessity for wire lapping or iron clips to hold
a flexible tube in position is avoided, and a secure joint, easily removed or tightened
up is obtained. It is applicable for use under many conditions when flexible
tubing or hose is used for conveying water, air, or steam under pressure or
otherwisc.
It is also applicable for use in repairing fractures in flexible or metal pipes. In
flexible pipes a short length of metal pipe may be inserted, the two fractured ends
brought together, and the coupling screwed up to hold the ends in position, and in
metal pipes the two fractured ends are brought together under a short length of
flexible or thin lead piping and the coupling screwed up.
WM P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, and
323, High Holborn, London,
Patent Agents for the Applicant.

page_text: I, DUNCAN FAULDS, 14, York Street, Barrow-in-Furness, 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 :-
The object of this invention is to provide a coupling or joint, or means for easily
and securely fastening together the ends of pipes, when the end of one or both of
the pipes is of a flexible or pliant nature. It is chiefly designed for use in attaching
india rubber or canvas piping or hose to a metal pipe, but may in some instances
be found applicable for use with lead piping.
It is best described by aid of the accompanying drawing; in which, Figure 1, is
an elevation, Figure 2, a plan of the apparatus, and Figures 3 and 4 elevation and
plan of details.
As
In these A A is a conical or tapered bush, in three segments, of internal diameter
to fit the size of piping to which it is to be applied, and having a screw thread cut
on the outside, B is a nut, tapered internally, and having a screw thread corre-
sponding with that on the tapering bush. The bush is cut longitudinally into a
number of parts, preferably three, as shown, to allow of space for compression.
the internally tapered nut is screwed upon the sections of the bush, the latter are
compressed or drawn together until the edges of the several sections nearly touch
cach other. The edges of the several sections may run parallel to each other, and
to the longitudinal axis of the bush, but I prefer to make each edge with three
faces, two running parallel to the longitudinal axis, and the other at right angles
thereto or otherwise, the one interlocking into the other. One or two pins, serra-
tions or ridges C, C, may be placed on the internal surface to prevent the sections
of the bush from slipping, and to indicate the position of the sections in relation to
each other.
In carrying out the invention, when a joint is to be made between a flexiblo and
a metal pipe, the end of the metal pipe D, is inserted into the flexible one E, the
tapered sectional bush A, A, placed in position over the flexible pipe and the nut B
screwed onto it until the whole is screwed up tight, and the joint secure. When it
is intended for a movable coupling, the bush may be cemented or otherwise
attached to the flexible tube to prevent the bush falling off when the nut is
unscrewed or taken off. When the connection has to be remade the metal pipe is
again inserted, and the nut screwed up. The bush and nut may be applied in a
similar way to the end of a thin lead pipe, or it may in some instances be soldered
thereto, and the end of the pipe cut for a short distance to correspond with the
sections of the conical bush.
By the use of this invention the necessity for wire lapping, or iron clips to hold
a flexible tube in position is avoided, and a secure joint easily removed or tightened
up, is obtained. It is applicable for use under many conditions when flexible
tubing or hose is used for conveying water, air or steam, under pressure or
otherwise.

page_text: It is also applicable for use in repairing fractures in flexible or metal pipes. In
flexible pipes a short length of metal pipe may be inserted, the two fractured enda
brought together, and the coupling screwed up to hold the ends in position, and in
metal pipes the two fractured ends are brought together, under a short length of
flexible or thin lead piping, and the coupling screwed up.
In the foregoing I have described the simplest form of my apparatus but it is
obvious that there are other variations that could be adopted-thus the outer pipe
could be made conical in section while the nut and bush were parallel, or the
conical part of the nut and bush could be smooth, and a continuation of both be
cut with a parallel screw thread fitting each other. In either case by screwing up
the nut onto the bush, increased pressure would ensue until the whole was screwed
tight.
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
.
1st The improved coupling or joint for pipes or tubes in which the end of the
metal or harder tube is inserted into the end of the softer one, and a segmental
bush placed round the latter and forced tightly together, by screwing a ring or nut
over the bush, thus pressing the latter into the material of the outer pipe, the ring
or bush or both being conical.
2nd The combination of the segments A, and conical nut B, with the pipes D.
and E, substantially as described.