Year: 1886

page_text: I ALFRED CUNDY TREW of 14 Clarkson Street, Ipswich, in the county of Suffolk,
Builder, do hereby declare the nature of this invention to be as follows:
This invention relates to improvements in socket pipes of all kinds, the object
of the improvement being to secure a water-tight connection in a more simple
manner than hitherto..
For this purpose I construct or form the spigot end of the pipe with a projecting
undercut wedge piece on the outside, and I construct or form the socket or flange
end of the pipe with a recess corresponding in shape with the said wedge piece; so
that when two pipes are placed together a complete and self adjusting lock between
the two pipes is effected and the internal faces of the pipes kept level with, each
other thereby giving free passage for liquids or other matter passing through the
pipes. The bottom of the flange is formed with a groove or recess to receive the
cement to form a tight joint.
When the ends of two pipes have been placed together as herein before described
the joint can be completed by means of cement or other suitable material according
to the substance from which the pipes are made. I prefer to run in the cement
or other material in a liquid or molten state through pour holes provided for the
purpose, vent holes being also provided..

page_text: I Alfred CundY TREW, of 14 Clarkson Street, Ipswich, in the county of Suffolk,
Builder, 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 improvements in socket pipes of all kinds, the object
of the improvements being to secure a water-tight connection in a more simple
manner than hitherto.
For this purpose I construct or form the spigot end of the pipe with a projecting
wedge piece on the outside the said wedge piece being undercut or not and I con-
struct or form the socket or flange end of the pipe with a recess corresponding in
shape with the said wedge piece, so that when two pipes are placed together a
complete and self-adjusting lock between the two pipes is effected and the internal
faces of the pipes are kept level with each other thereby giving free passage for
liquids or other matter passing through the pipes. The bottom of the flange is
formed with a groove or recess to receive the cement to form a tight joint.
When the ends of two pipes have been placed together as hereinbefore described
the joint can be completed by means of cement or other suitable material according
to the substance from which the pipes are made. I prefer to run in the cement
or other material in a liquid or molten state through pour holes provided for the
purpose, vent holes being also provided.
In order to enable my invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawing in which figure 1, represents
a longitudinal section of the adjoining ends of two pipes constructed and joined
according to my invention the wedge piece and corresponding recess being shewn
undercut and cast or formed in one piece with the pipes; figure 2, is a sectional
plan view of figure 1; figures 3 and 4 are similar views to figures 1 and 2 but
shewing the wedge piece and corresponding recess formed of a suitable composition
moulded or otherwise formed on the ends of the pipes after they are made;
figure 5 is a plan of the same; figure 6 is a sectional end view of the pipes before
the cement has been applied thereto the section being taken on line A, B, of figure 3;
figures 7 and 8 are similar views to figures 1 and 2 but shewing the faces of the
wedge shaped piece and recess formed at right angles with the axis of the pipes,
that is to say not undercut; figure 9 is a longitudinal section drawn to a smaller
scale shewing one of my improved pipes provided with a rest or strengthening
piece on its underside; figure 10 is a cross section on line C, D, of figure 9.
Similar letters in all the figures represent similar parts.
Referring to figures 1 and 2, a, and b, represent the spigot and socket or flange
ends respectively of the pipes; c, is the projecting undercut wedge piece which
I form on the outside of the spigot end a, of each of the pipes the said wedge piece
extending round about one half the circumference of the said end; d, is the recess
which I form in the socket or flange end b, of each pipe the said recess corre-
sponding in shape with the wedge piece c, on the adjacent end of the next pipe.
6, represents the groove or recess in the flange of the socket end of the pipe for
receiving cement or other suitable material f.

page_text: In order to place the ends a, and b, of the pipes in their proper position one
within the other the already fixed length of pipe having its socket or flange end b,
resting on the ground or otherwise in the position shown in figure 1, ready to
receive the spigot end a, of the next length of pipe, the latter is applied with its
projecting wedge piece c, upwards and in this position it is passed into the socket b,
until the end faces of the two pipes meet; the loose pipe is then half rotated
whereby the inclined and undercut surface of the wedge piece c, will be caused to
move over the corresponding face of the recess d, and the two lengths of pipe will
be drawn close together into the position shewn in the drawing; the cement or
other material f, for making a tight joint can then be run in through pour holes
such as are hereinafter referred to and the joint is completed by applying cement
or the like at g.
The pipes represented in figures 3, 4, 5, and 6 are similar to those hereinbefore
described when referring to figure 1 and 2 except that the wedge piece c, and
recess d, instead of being formed in one piece with the pipes are moulded or other-
wise formed thereon after the pipes are made suitable undercut recesses being cast
in the pipes to receive the composition forming the wedge piece and recess and
serving to securely hold the latter thereto; h, h, figure 5, are the pour holes through
which the finishing cement f, is run, suitable vent holes, not shewn in the drawing,
being also formed in the pipes.
The pipes shewn in figures 7 and 8 are also similar to those shewn in figures 1
and 2, except that the faces of the wedge piece c, and recess d, are not undercut
but are formed at right angles to the axis of the pipes and this construction will be
well understood without further description.
In figures 9 and 10, I have shewn a pipe of my improved construction provided
with a rest or strengthening piece i, with which I find it advantageous to provide
or form the bottom of each pipe, in order to relieve the sockets or joints from part
of the weight of the earth which may be bearing upon the pipes.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. Forming the spigot end of pipes for sewers, drains and other purposes with
a projecting wedge piece such as c, adapted to enter a correspondingly shaped
recess in the socket or flange end of the adjacent pipe substantially as and for the
purpose hereinbefore described and represented in the accompanying drawing.
2. The manufacture and use of pipes for sewers, drains and other purposes
constructed substantially as bereinbefore described and represented in the various
figures of the accompanying drawing.