Year: 1888

page_text: Date of Application, 23rd May, 1888
Complete Specification Left, 21st Feb., 1889
Complete Specification Accepted, 4th May, 1889
1, WILLIAM SHEPHARD SHREEVE, of Shrewley, Warwick, Estate Agent do hereby
declare the nature of this invention to be as follows:-
The high pressure self making joint for coupling up pipes and tubes is for use in
the transmission of hydraulic or pneumatic power, and consists of a short piece of
metal tube, or the end of a long tube which is made to fit accurately but easily into
another tube; the two tubes being joined in the usual way to the ends of the hose or
pipes or other machine to which it is desired to make the connection. The larger of
the two tubes is provided with a receptacle or chamber in the interior in which is
placed a hat leather, & has also a screwed plug & gland (into which the smaller tube
is inserted) which presses the bat leather tightly upon its seating and retains it in
position.
The smaller tube is slipped into the larger one & is then coupled up in the usual
way, either by means of a coarse thread screw and gland nut, on the outside of the
tubes, or lugs, or spring catches and. the force may then be communicated through
the pipes or hose, as the joint will be made instantaneously by the pressure transmitted
which will press the hat leather tightly against the outside of the smaller tube, and
the greater the pressure, the more secure will be the joint.
When it is desired to couple up hose, the connecting tubes forming the self made
joint have one end pushed within the hose & this end is provided with a small piece
of india rubber pipe or leather tube securely fixed within the connecting tube &
fitting losely against the inside of the hose; the hose is then cramped in the usual way,
on the outside with bands & screw bolts, and when the connection is coupled up as
before described the pressure being transmitted expands the india-rubber or leather
pipe & makes the joint between the hose & the connection automatically.
The joint is intended to facilitate the distribution of hydraulic or pneumatic power
and is designed for high pressure, and in order to save time; the old method required
a carefully screwed joint with leather, very tightly turned up with a spanner-the

page_text: self made joint may be adjusted by the hand alone & .connected or disconnected
momentarily it is particularly applicable to connecting the hose for torpedo work, &
for conveying compressed fluid to the reservoirs of Tram Cars, to rivetting or stamping
machines and hydraulic mining wedges.
Mon ✓ 1000
I WILLIAM SHEPHARD SHREEVE of Shrewley in the County of Warwick Estate
Agent 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 High pressure joint for pipes and tubes is for use in the transmission of
hydraulic or pneumatic power when a great force is to be transmitted per square inch,
and is designed to facilitate the coupling up quickly and efficiently the pipe or hose
conveying the power to the object to which it is to be applied.
The joint or coupler consists of two principle parts which are constructed in
such a manner that they can be readily attached to the pipes hose or other object it is
desired to couple up. One of such parts called the female end marked 1. on the
accompanying drawing is provided with a receptacle or chamber in which a hat or
cupped leather or india rubber B. is placed and which is kept in position by a gland
nut A., the latter having a hole or bore through it of a sufficient size to allow the male
end 2. of the coupler to be pushed into it & through the cupped leather: the male end
of coupler is made to slip easily into the female end of the coupler, so that the end of
the male end passes through and a little beyond the cupped leather.
The coupling is provided with means for preventing the male end from being
forced from the female end by the pressure being transmitted, by either a coarse
thread screw & gland nut E., lugs with a ring to slip over them & hold them in
position F as indicated by dotted lines on the drawing hereto attached, or by spring
catches in the usual manner; and when the pressure is transmitted the leather or
rubber inside the female end is closed tightly around the male end and a perfectly
secure joint is made instantaneously. In like manner the ends of pipes may be
coupled up, but in this case the male & female ends are formed in the pipes themselves,
& then bolted together in the usual manner.
When it is desired to couple up hose, the coupler to which it is desired to join the
hose is so constructed that one end G. may be pushed into the end or bore of the hose,

page_text: & this end is made slightly tapering, and is provided at the end which
pushed into
the hose with a small piece of india rubber tube or leather D securely fixed within it
either by means of a hollow cone H capable of being tightened up by the nut J. or a
short piece of pipe K which is screwed or fastened inside the coupler & which retains
the india rubber tube or leather in position, & has in addition a spiral spring Z. which
expands the india rubber tube or leather, forcing it against the inside of the hose.
After the coupler has been pushed into the hose, the hose is clamped on the outside to
the coupler in the usual manner, and when the couplers have been connected & the
pressure transmitted through the hose, the pressure acting upon the india rubber or
leather within the coupler & the hose, makes the joint between the two latter.
The mode of connecting the couplers together and also that by which the hose is
clamped to the coupler is not new but is the manner usually adopted.
On the accompanying drawing A. is the gland nut, B. is the cupped leather, C. is
the male end, D. is the india rubber tube or leather for making the joint between the
coupler & hose 1. section of female end screwed for connecting pipe, 1* end view of
ditto, 2. section of male end slipped into hose, 3 hose, 4. clamp 5. lug to prevent
coupler being driven out of hose by the pressure transmitted.
.
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:
In the making of high pressure joints or couplers for pipes or hose.
1. The arrangement as shown on drawings, of a male end inserted into a female
end having a cupped leather therein, or an india rubber, by which means the joint is
made by the pressure itself being transmitted through such joint or coupler.
2. The arrangement for making the joint between the coupler and the hose, inside
the latter.