IMPROVED SCREW FERULE JOINT FOR CONNECTING HOSE OR OTHER SUCH LIKE PIPES
Year: 1878

page_text: LETTERS PATENT to Robert Watkinson, of Salford, in the County of Lancaster,
Brass Founder, for the Invention of "IMPROVED SCREW FERULE JOINT FOR
CONNECTING HOSE OR OTHER SUCH LIKE PIPES."
Sealed the 20th September 1878, and dated the 23rd March 1878.
COMPLETE SPECIFICATION filed by the said Robert Watkinson at the Office
of the Commissioners of Patents on the 23rd March 1878.
ROBERT WATKINSON, of Salford, in the County of Lancaster, Brass Founder.
"IMPROVED SCREW FERULE JOINT FOR CONNECTING HOSE OR OTHER SUCH LIKE
PIPES."
My Invention consists of an improved screw or worm ferule joint for instantly
connecting hose or other pipes without the aid of wire, twine, cord, or other, such
like fastening now usually used for connecting such pipes to union joint ends;
and should a joint be required to connect two ends (without a union or swivel),
such may be almost instantly, very simply and firmly made by using what I shall
herein-after describe.
Herewith I annex a Sheet of Drawings, the several Figures of which are marked
by corresponding letters of reference.
Fig. 1 is a section of one of my connecting joints with two pipes shown
connected.
Fig. 2. One outer or hose end of a union of any design or make prepared to
receive my worm or screw ferule. A, A, is the ferule; B, B, the hose or other pipe
ends designed to connect, shewn here by a plain coupling. This may be made by
a union (if desired), the ends of which will and may be made or altered to my
design, and to fit my worm ferule, as shown here in Figs. 1 and 3. C, C, are the
ends of coupling embraced by the two ends of the hose pipes to be connected with
the two ferules screwed firmly on the ends of coupling C, up to shoulder D, with
the coupled ends of hose or other pipes between ends of coupling C and
ferules A.
•
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page_text: The thread in some instances on the ends of couplings I make round and full,
as shown by b, b, on Fig. 2, and the groove a between narrow and concave at
bottom, as shown likewise at a, a; and the lower part of this thread to the concave
I mill or rough, so that when the inside of the pipe is pressed into it by the corre-
sponding thread inside the ferule (which is smooth) works freely round, forcing the
pipe into and between the threads b, holds it from turning round during the screwing
up of the ferule. Space for the hose or other pipe end is allowed between the end
of the coupling and screw ferule when wrenched up tight by hand or lever. The
threads in other instances I make of equal size inside of ferule and outside of
coupling, quite round at top and bottom of each. The bottom of coupling thread I
mill or rough as before. I likewise produce the same joint by means of a spiral
worm coil, which I make of such size and pitch as the screw on the ends of coup-
ling the thread on which in this instance is made concave to receive one-half (or
near) of the coil, and hose pipe under pressure. The ferule I make correspondent
in size, and a similar groove to receive the other or outer half of the coil only. Thus
the coil forms a thread convexed or round on both sides between the concavo worm
formed in the ferule, on the outer side of the hose or other pipe forced into concave
thread formed on the outside of the coupling. The coil of itself would form a joint
if screwed on to the pipe placed on the end of the coupling; but I by preference
All these connec-
cover such by the ferule as a protection and further security.
tions are made in size to allow for the thickness of pipe between them under pres-
sure of thread in the ferule or on the coil, which are made slightly conical, so that
the further it is screwed up the tighter it becomes.
The increase of pressure
inwardly likewise has a further tendency to tighten the joint; a suitable wrench
may be used for tightening up the joint, but such will not be required often, as I
have found the hand quite sufficient. It will thus be seen that I form a joint in a
very few moments by a metallic connection, by two ends formed as shown and
described by A, B, C, & D, with a collar between or on the ends of ordinary union
joints so formed with my improved ferule, thus dispensing with the customary wire
for connecting the pipes to the union, which takes up a considerable amount of
time, and when done is not often tight, and always very unsatisfactory. Again,
should the pipe be damaged in any part, such damaged part may be taken out and
a perfect joint instantly made.
I know that several attempts have been made and experimented upon for making
such a joint by an ordinary screw thread of V shape, but have failed in every
instance from the sharp edge of the thread cutting the pipes. What I therefore
claim as secured to me herein is the ferule joint with round-nosed thread, with or
without coil, substantially as and for the purposes herein-before set forth, for con-
necting hose or other such like pipes.
In witness whereof, I, the said Robert Watkinson, have hereunto set my
hand and seal, this Twentieth day of March, in the year of our Lord One
thousand eight hundred and seventy-eight.
NADNam T I MINNA