Improvements in Securing Flexible Pipes to Couplings, Nipples, and the like.
Year: 1898

page_text: Date of Application, 1st Jan., 1898
Complete Specification Left, 1st Sept., 1898-Accepted, 22nd Oct., 1898
PROVISIONAL SPECIFICATION.
Improvements in Securing Flexible Pipes to Couplings, Nipples,
and the like.
I, ALEXANDER SPENCER, of 77, Cannon Street, in the City of London, Engineer,
do hereby declare the nature of this invention to be as follows;
My invention has for its object the making of fluid tight junctions between
flexible pipes and couplings, nipples or other like parts in such wise as to obviate
risk of injury to the flexible pipe such as is liable to occur when it has to be forced
over or have forced into it the coupling nipple or other like part to which it is
to be secured. I make the flexible pipe of india rubber with an internal screw thread or
threads at that part intended to surround the coupling or nipple or equivalent
which I make with a corresponding external screw thread or threads and of an
external diameter suitable to enter and fit and engage with the internally threaded
pipe, the arrangement being such that the one part can be readily screwed into
or out of the other; and around the exterior of the flexible pipe I place a clip or
collar which is constructed to open and close so that it can be tightened around
the flexible pipe when the latter is over the screw threaded coupling nipple or other
externally screw threaded part and thus retain the flexible pipe in place.
The exterior of the flexible pipe and the interior of the clip or collar may be
plain or may be formed respectively with external and internal screw threads
adapted to aid in securing the flexible pipe in place on the coupling nipple or
other part or the interior of the clip or collar may be screw threaded and the
exterior of the flexible pipe not. In some cases I mould in the material of the
flexible pipe a helical coil or coils of metal, which may conveniently be so arranged
in the substance of the pipe as to lie in the projecting portion of the thread thereof.
Dated this 1st day of January 1898
Improvements in Securing Flexible Pipes to Couplings, Nipples,
and the like.
I, ALEXANDER SPENCER, of 77, Cannon Street, in the City of London, Engineer,
do hereby declare the nature of this invention and in what manner the same is to
[Price 8d.1

page_text: be performed to be particularly described and ascertained in and by the follow-
ing statement:-
1
My invention has for object the making of fluid tight junctions between
flexible pipes and couplings, nipples or other like parts in such wise as to obviate
risk of injury to the flexible pipe such as is liable to occur when it has to be forced
over or have forced into it the coupling, nipple or other like part to which it is
to be secured. I make the flexible pipe of india rubber with an internal screw thread or
threads at that part intended to surround the coupling or nipple or equivalent
which I make with a corresponding external screw thread or threads and of an
external diameter suitable to enter and fit and engage with the internally threaded
pipe, the arrangement being such that the one part can be readily screwed into
or out of the other; and around the exterior of the flexible pipe I place a clip or
collar which is constructed to open and close so that it can be tightened around
the flexible pipe when the latter is over the screw threaded coupling, -nipple
or other externally screw threaded part and thus retain the flexible pipe in
place.
Fig. 1 of the accompanying illustrative drawings shows a central longitudinal
section part of a flexible pipe secured to a coupling or nipple in accordance with
this invention. Fig. 2 is a similar view to Fig. 1 showing a modified construction.
1 is the flexible pipe formed with an internal screw thread 2 and 3 the coupling
or nipple formed with a corresponding external screw thread 4 of suitable diameter
so that it can be readily screwed into or out of the pipe end, 5 is a clip or collar
by tightening up which around the pipe 1 the latter can be firmly secured upon
the coupling or nipple 3. The clip 5 shown in Fig. 1 is made in halves that can
be drawn together by two bolts 6 and tightened around the flexible pipe to retain
the latter in place on the nipple. In the construction shown in Fig. 2, the clip 5
is a spring ring split at one part of its circumference and tightened over the flexible
pipe 1 and nipple 3 by means of a single bolt 6.
The exterior of the flexible pipe 1 and the interior of the clip or collar 5 may be
plain as shewn in Fig. 1, or they may be formed respectively with external and
internal screw threads 1 and 5 as shewn in Fig. 2, adapted to aid in securing
the flexible pipe in place on the coupling, nipple or other part; or the interior of
the clip or collar 5 may be screw threaded and the exterior of the flexible pipe
not. In some cases I mould in the material of the flexible pipe, a helical coil or
coils of metal 7 which may conveniently be so arranged in the substance of the
pipe as to lie in the projecting portion of the thread thereof, as in the arrangements
shewn.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is;
1. Securing a flexible pipe to a coupling, nipple or the like by forming the
flexible pipe with an internal screw thread or threads at that part intended to
surround the coupling nipple or equivalent which is made with a corresponding
external screw thread or threads and of an external diameter suitable to enter and
fit and engage with the internally threaded pipe, and clamping the flexible pipe
upon the coupling, nipple or other externally screw threaded part by means of a
clip or collar adapted to be opened and closed, substantially as herein described
for the purpose specified..
2. A combined flexible pipe and coupling nipple or the like secured together as
specified in the preceding claim, and provided with a coil or coils of wire
moulded in the material of the flexible pipe, substantially as described and
shewn.
3. The combination of a flexible pipe, a coupling, nipple or the like, and a clip
or collar, these parts being constructed, arranged and secured together substantially
as hereinbefore described with reference respectively to and shown in Fig. 1 and

page_text: in Fig. 2 of the drawings annexed, whether or not the exterior of the pipe and the
interior of the clip or collar be plain or formed with screw-threads, and whether
or not the pipe has moulded therein one or more coils of wire as set forth.
aten
1st day of September
For the Applicant,
W. LLOYD WISE,
4G, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.