Improvements in Couplings for Pipes, Shafting, and the like.
Year: 1894

page_text: Date of Application, 20th Feb., 1894-Accepted, 9th June, 1894
CUMI LEIE
Improvements in Couplings for Pipes, Shafting, and the like.
We, JAMES DAVISON, of 10 Hyde Street, Sunderland, Engineer and JOHN
DAVISON, Hotel Proprietor of 21 Ryhope Street, Ryhope, both in the County of
Durham 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 :-
This invention relates to the jointing and coupling of all kinds of pipes, shafting
and the like without the use of lead or copper flanges and without soldering, brazing,
screwing of pipes or keying of shaftings.
And in order that our invention may be thoroughly understood, we now proceed
to describe the accompanying drawing thereof, reference being had to letters and
figures niarked thereon.
Fig. 1, is a section of a shaft coupling.
Fig. 2, is a section of a coupling for repairing a broken propeller shaft.
Fig. 3, is a section of coupling and tubes.
Fig. 4, is a section of pipe coupling and tubes.
Fig. 5, is a connection in section of a pipe to a bulkhead, tank or the like.
Fig. 6, is a half coupling in section for a lead, copper or other malleable tube.
Fig. 7, is an alternate coupling.
Similar letters refer to similar parts throughout the several views.
Parts of the figures are broken off for convenience.
The pipe coupling a in Fig. 3, consists of a tubular piece of cast or stamped iron
or steel, or any other suitable material, of the same diameter inside as the pipe b
to be jointed increasing in diameter on the outside towards the centre forming a
collar of a novel device being reduced up to a suitable height, thus forming a double
truncated conical tube. Two flanges c are made of cast or stamped iron or steel or
any other suitable material, having conical inside surfaces corresponding to the
double conical tube, the flanges may be slightly recessed to admit of screwing closely
up. To connect two lengths of lead or copper pipes, the flanges c are first placed on
the ends, and then the pipes bare by means of a tool expanded to fit the flanges, the
conical tube placed in position, the flanges are then by means of bolts e screwed up
in the usual manner, the flanges being brought together the softer material is forced
down on to the internal piece while the extreme ends of the tubes are by means of
reduced collar forced up and into the recess of flanges, effectively preventing any
leakage from the joint without the use of any other jointing material. For jointing
on to bulkheads, valves, cocks and the like, one flange d only is required as in
Fig. 5, the internal tube being practically one half the length of the one described
above.
For jointing pipes of small diameter and of soft material a threaded conical
tube a' is used on one side, and a collared conical tube a" with suitable nut f on the
other as in Fig. 7; after treating the pipes as before described they are screwed up
in the usual manner. To joint on to taps and the like having threaded ends
without alterations being made thereto, while practically the same collared conical
tube and union nut is used, the internal conical piece is made with a collar and
spigot, the spigot of suitable size to pass freely into the end of tap, a joint ring is
placed on the collar next to the tap, the pipe is then screwed up into position by
means of the nut and conical collared tube herein before mentioned.
To joint pipes of any hard material without flaring or expanding or screwing
while the same flanges are used, the conical pieces or flanges e are made of lead or
any other suitable material, and of suitable size to pass on to the pipe and inside of

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the flanges; a central piece is made to fit on to the ends of the pipe, having a small
inside flange cl as in Fig. 4, to keep it in position; on the outside it has a circular
wedge shaped tongue cat each end, which on the whole being screwed up by
bolts e and nuts cuts into the middle of the softer material, (the central ring being
of hard suitable material) the flanges of the coupling a being brought forward at the
same time presses down the softer material on to the pipe b, thus securing a firm and
compact joint. A modification of this joint may be made without the central piece
mentioned.
To joint on to bulkheads, tanks, valves and the like we use one half cone
of soft material and one flange d being practically the same as hereinbefore
described.
To couple two lengths of shafting together as in Fig. 1, we make the double
conical piece c¹ of hard material having a central internal flange c", after being
machined it is slit into two pieces longitudinally, and the internal flange is placed
between the ends of the shafts, by which means they are held in a true position, the
flanges of the coupling a having been previously placed on the shafts
9, are then
brought together and screwed firmly up, thus making a firm friction coupling; no
keys or keyboards being required.
To repair a broken or defective shaft gl as in Fig. 2, a similar system is pursued
the double conical pieces c¹ are made without the internal flange, and may have
longitudinal teeth or serrations cut in such a manner as to afford the greatest
amount of friction, the coupling flanges may be made in two or more segments
as may be required for large shaftings such as propeller tunnel and any other
large shafts.
The double conical tubes and single conical tubes hereinbefore mentioned may
be made to suit certain soft lead, rubber, gutta percha or any other soft flexible
material pipes as in Fig. 6, which may have a spiral wire or other suitable tube h in
the inside or in the midst thereof.
Any of the flanges herein described may for sundry purposes be made in sections
and bolted together at the sides, also either of the soft metal or material conical
tubes herein before mentioned.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The combination of the coupling with connections and conical tubes, for
jointing all manner of shipsbilge or any other lead pipes, deck winch or any other
copper or soft malleable pipes, without the use of lead or copper flanges, and
without soldering, brazing, screwing or welding, substantially as herein described
and according to the accompanying drawing.
2. The combination of the flange and bolts for connecting lead, copper and any
other soft material pipes, to bulkheads, tanks, valves and the like, substantially
as herein described and according to the accompanying drawing.
3. The combination of the couplings, flanges, and bolts, for jointing pipes other
than lead and like soft material, substantially as herein described and according to
the accompanying drawing.
4. The combination of the apparatus, for connecting hard metal pipes without
flaring the end thereof, consisting of the connections and two half cones of soft
metal and central conical ring, substantially as herein described and according to
the accompanying drawing.
5. The combination of the coupling for connecting hard metal pipes without the
central ring, consisting of connections and soft metal conical tubes, substantially as
herein described and according to the accompanying drawing.
.6. The combination of the connecting apparatus, for connecting small lead,
rubber, gutta percha and the like pipes, consisting of connections a¹, all, and f, with
double conical tube h, substantially as herein described and according to Fig. 7, of
the accompanying drawing.

page_text: 7. The combination of the apparatus, for jointing small pipes of lead rubber and
the like, to taps and the like, having threaded ends thereon, substantially as herein.
described and according to the accompanying drawing.
8. The combination of the apparatus, for coupling shafting and repairing broken
and defective tunnel and other heavy machine shaftings, substantially as herein
described and according to Figs. 1 and 2 of the accompanying drawing.
9. The combination of the apparatus for making pipe and shaft coupling flanges
for sundry purposes, substantially as herein described.
D0th 1
1001
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicants.