Improvements in or relating to Sanitary Pipe Connections.
Year: 1898

page_text: Date of Application, 7th Jan., 1898--Accepted, 26th Mar., 1898
COMPLETE SPECIFICATION.
Improvements in or relating to Sanitary Pipe Connections.
We, JOHN JONES, of 40, Sydney Street, Chelsea, in the County of Middlesex,
Sanitary Specialist, and FREDERICK HENRY SPRANG, of 86, Grange Road, Bermondsey,
in the County of Surrey, Indiarubber Works Manager, 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 pipe connections, more particularly to the rubber sleeves
or cones employed for covering water or other pipe joints.
As previously made these sleeves have been formed as complete rings, a construction
which involved certain disadvantages, as when putting a sleeve in position or
renewing it, it was necessary to disconnect the joint in order to pass the pipe through
the sleeve.
According to this invention the sleeves are slit longitudinally so as to enable them
to be opened, placed round the joint, and there secured by solutioning the edges
together, flaps of canvas being also preferably employed as an additional means of
uniting the edges.
In order to ensure the cut edges having surfaces sufficiently smooth to form a good
joint, the rubber sleeve is slit prior to its vulcanization, if desired a portion being.
left uncut in order to retain the shape of the sleeve during this process. A layer of
paper or other suitable material is preferably laid between the cut edges to prevent.
their sticking together.
In the accompanying drawings
Figure 1 is a perspective view showing a sleeve or cone of the bulged type con..
structed in accordance with this invention.
Figure 2 is a similar view of a conical sleeve showing a modification.
Like letters indicate like parts throughout the drawings.
The main portion A of the sleeve is constructed of rubber the complete ring being
slit longitudinally. The edges formed by the slit are bevelled or cut on the slant as
at A¹ or otherwise shaped so as to form an overlapping or scarf joint when brought
together. The sleeve is provided with an outer wrapping B of canvas which is
solutioned or otherwise securely attached to the rubber. The canvas is 'extended
beyond one of the edges A¹ so as to form a flap B', which is preferably of sufficient
length to wrap right round the sleeve and cover the division a second time, being
secured in this position by solutioning after the sleeve has been placed round the pipe
joint.
The canvas employed for the outer wrapping is preferably woven so as to be
extensible circumferentially when attached to the sleeve, but inextensible longitudin-
ally, adding the necessary strength to the sleeve and protecting it from chafing by
the outer wire wrapping usually employed, while permitting of its being extended
to cover pipe connections of different sizes.
In the modification illustrated in Figure 2, the sleeve is provided with a internal
canvas flap C, which facilitates the uniting of the edges A¹ while adding strength to
the join. This internal flap C is solutioned or otherwise attached to one of the
edges A¹ and is formed preferably of canvas which is inextensible circumferentially of

page_text: the sleeve. In this case after the cone has been placed in position round the pipe
joint, the flap C is solutioned to the opposite edge A', the two edges being also
solutioned together; the outside flap is now secured round the outside of the sleeve
by solutioning in a similar manner.
In order to facilitate uniting the edges of the sleeve they may before vulcanization
be coated with a layer of pure rubber, or rubber.containing considerably less sulphur
than that employed for the construction of the main portion of the sleeve, the effect
of this arrangement being that it is only necessary to apply a little naphtha or other
solvent to the edges in order to cause them to unite when brought together. If
desired one or both of the flaps may be provided with a similar coating of rubber to
facilitate joining.
If a sleeve such as above described is made cylindrical and not bulged or conical
as shown in the drawings, it may form a convenient means of temporarily closing a
leak in a pipe as the sleeve can be very readily placed over the leak and secured in
position so as to close it or at any rate lessen the escape of the contents of the
pipe.
It is obvious that this invention is applicable to sleeves or cones of any shape, and
it will be readily understood that the canvas covering, may be replaced or, supple-
mented by a winding of tape, cord, or the like, which may be solutioned or not as
found convenient.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, we declare that what we
claim is :-
: I
1. A rubber sleeve slit longitudinally substantially as and for the purpose
described.
2. In pipe connections a longitudinally slit sleeve such as A A¹, substantially as
described.
3. In pipe connections the combination with a longitudinally slit sleeve such.
as A A¹ of a canvas covering forming a flap, substantially as described.
4. In pipe connections the combination with a longitudinally slit sleeve such.
as A A¹ of an external extensible canvas covering and flap and an internal inextensible
canvas flap substantially as described.
.
5. The complete sleeve for a pipe connection substantially as described. and illus-
trated in Figure 1 or Figure 2 of the accompanying drawings.
Dated this 6th day of January 1898.