Improvements in and relating to Machinery Used in the Casting of Jointing Material on Stoneware or other Pipes.
Year: 1896

page_text: Date of Application, 15th Feb., 1896
Complete Specification Left, 14th Nov., 1896-Accepted, 23rd Jan., 1897
Improvements in and relating to Machinery Used in the Casting
of Jointing Material on Stoneware or other Pipes.
We, J. DUCKETT AND SON LIMITED, of Mitre Sanitary Works, Burnley, in the
County of Lancaster, Sanitary Ware Manufacturers, and JOHN WHITAKER BULLOOK
of 36, Accrington Road, Burnley, Manager of Sanitary Works, do hereby declare
the nature of this invention to be as follows:-
Our invention relates to machinery to be used in the casting of jointing material on
stoneware or other pipes, particularly in making that class of pipe joints described in
the Specification of Letters Patent granted to one Walter Halsted Cortis Stanford,
numbered 4039 and dated 8th December 1873, whereby linings or rings of molten
cement or other suitable composition are cast upon the spigots and within the sockets
of the pipes by means of moulds. Hitherto, for want of suitable appliances thero has
been no means of placing the said moulds accurately into position prior to pouring
in the liquid composition, i.e. the moulds have not always been placed exactly square
with the axis of the pipe, the result of this has been that when the pipes were laid in
a straight line in the sewer, the spigot did not exactly fit the socket thus causing a
serious leakage in the joint.
Now to prevent this serious objection, we construct apparatus as shewn upon
annexed drawings.
In the floor of the building intended to be used for preparing the joints, we fit an
iron chamber A, seen in Figs. 1 and 2, which is supplied with steam, hot water or
hot air from any convenient source. Upon this heated chamber and preferably on a
level with the floor of the building, we attach by means of bolts or otherwise, bottom
moulds B or B¹, which are formed to receive the spigot ends of the pipe and the cement
or jointing material the heated chamber A being at such temperature as will maintain
the jointing material in a liquid condition until it has completely surrounded the
spigot. The pipe C to be prepared with the special jointing material having been
placed with its spigot end resting upon mould B, the top mould D is then placed in
the socket of the pipe.
Through the centres of the top and bottom moulds is formed a circular hole, through
which we insert the iron rod E. In the centre of the heated chamber A we form a
socket L for the end of the iron rod to rest in; this has the effect of keeping the
rod firm.
Rod E is attached to a chain or cord F, and taken over the pulleys G, which may
be fixed any height or distance apart. To this chain or cord we attach box H, which
can be weighted to balance rod E, whereby the rod can be readily raised or lowered
as required. To keep rod vertical, we construct a sleeve J, which may be securea
at K to the wall of the building or a beam, or the like.
The pipe and moulds being thus placed in readiness to receive the jointing material,
we lower the iron rod E until it passes through the hole in the mould D, and
descending through the hole in mould B, finally enters socket L, the mould D being
thereby held firmly in a position concentric and parallel with mould B.
We now pour the jointing material in the space between the pipe, and the two
moulds B and D.
When the jointing material is set, we raise the rod until the bottom end reaches

page_text: the bottom hole of sleeve J, when the top mould and the pipe are removed, and the
process is repeated.
Fig. 2 shews an apparatus to be used for the same purpose as Fig. 1, but to be
applied in the preparation of the joints of pipes of smaller diameter.
The heated chamber and bottom mould are fixed and secured in a manner similar
to that described in Fig. 1.
In the centre of the mould B we preferably make a tapped hole, into which is
screwed bottom end of rod E¹, when the pipe is then placed in position shewn in
Fig. 2.
The mould D¹ may now be placed in the socket end of the pipe, the rod El-protruding
through its central hole, and maintaining the pipe in a perpendicular position to
receive the jointing material or cement.
Fig. 3 is a plan view of the bottom mould B', and Fig. 4 is a plan view of top
mould D.
Dated this 14th day of
...100
Improvements in and relating to Machinery Used in the Casting
of Jointing Material on Stoneware or other Pipes.
We, J. DUCKETT AND SON LIMITED of Mitre Sanitary Works, Burnley, in the
County of Lancaster, Sanitary Ware Manufacturers, and JOHN WHITAKER BULLOCK
of 36, Accrington Road, Burnley, Manager of Sanitary Ware Works, 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:-
Our invention relates to machinery to be used in the casting of jointing material on
stoneware or other pipes, particularly in making that class of pipe joints described in the
Specification of Letters Patent granted to one Walter Halsted Cortis Stanford
numbered 4039, and dated 8th December 1873, whereby linings or rings of molten
cement or other suitable composition are cast upon the spigots, and within the sockets
of the pipes by means of moulds. Hitherto, for want of suitable appliances there has
been no means of placing the said moulds accurately in position prior to pouring in
the liquid composition, i.e. the moulds have not always been placed exactly square
with the axis of the pipe, the result of this has been that when the pipes were laid in
a straight line in the sewer the spigot did not exactly fit the socket, thus causing a
serious leakage in the joint.
Now to prevent this serious objection, we construct apparatus as shewn upon the
drawings accompanying our Provisional Specification.
In the floor of the building intended to be used for preparing the joints, we fit an
iron chamber A, seen in Figs. 1 and 2, which is supplied with steam, hot water or hot
air from any convenient source. Upon this heated chamber and preferably on a
level with the floor of the building, we attach by means of bolts or otherwise, bottom
moulds B or B', which are formed to receive the spigot end of the pipe and the cement
or jointing material, the heated chamber A being at such a temperature as will
maintain the jointing material in a liquid condition, until it has completely
surrounded the spigot. The pipe C, to be prepared with the special jointing
material, having been placed with its spigot end resting upon mould B, the top
mould D is then placed in the socket of the pipe.
Through the centres of the top and bottom moulds is formed a circular hole,
through which we insert the iron rod E. In the centre of the heated chamber A, we

page_text: form a socket L for the end of the iron rod to rest in ; this has the effect of keeping
the rod firm.
Rod E is attached to a chain or cord F, and taken over the pulleys G, which may
be fixed any height or distance apart. To this chain or cord we attach box H, which
can be weighted to balance rod E, whereby the rod can be readily raised or lowered
as required. To keep rod vertical, we construct a sleeve J, which may be secured
at K, to the wall of the building, or a beam, or the like.
The pipe and moulds being thus placed in readiness to receive the jointing material,
we lower the iron rod E until it passes through the hole in the mould D, and
descending through the hole in the mould B, finally enters socket L, the mould D
being thereby held firmly in a position concentric and parallel with mould B.
We now pour the jointing material in the space between the pipe and the two
moulds B and D. When the jointing material is set, we raise the rod until the
bottom end reaches the bottom hole of sleeve J, when the top mould and the pipe are
removed, and the process is repeated.
Fig. 2 shews an apparatus to be used for the same purpose as Fig. 1, but to be
applied in the preparation of the joints of pipes of smaller diameter.
The heated chamber and the bottom mould are fixed and secured in a manner
similar to that described in Fig. 1.
In the centre of the mould B', we preferably make a tapped hole, into which is
screwed bottom end of rod E¹, when the pipe is then placed in position shewn in
Fig. 2.
The mould D¹ may now be placed in the socket end of the pipe, the rod E¹
protruding through its central hole and maintaining the pipe in a perpendicular
position to receive the jointing material or cement.
Fig. 3 is a plan view of the bottom mould B', and Fig. 4 is plan view of top
mould D.
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 manufacture and use of machinery for the purpose of casting jointing
material on stoneware pipes and the like, substantially as described and illustrated
in Figs. 1, 3 and 4.
2. The modification represented in Fig. 2, substantially as shewn and described.
3. The rod E, held vertically by sleeve J, and balanced by weight H, adapted as
described, and operated, substantially for the purpose, and in the manner set forth.
Dated this 13th day of November 1896.
F. RICHMOND,
12, Standish Street, Burnley, Agent for the Applicants.