Year: 1885

page_text: .
1 OSCAR ELPHICK of Doultons Sanitary Engineering Works Lambeth Engineer
do hereby declare the nature of this invention to be as follows:-
This Invention has for its object improvements in the joints of stoneware pipes.
It is common after stoneware pipes have been made to tip the end and to line
the socket with composition so that when the pipes are placed together a closely
fitting joint is formed.
The tips and the linings have in some cases been formed with spherical surfaces
which admits of the pipes being laid in other than perfectly straight lines and yet
with tight joints so long as the pipes are butted closely together, but the arrange-
ment is open to the objection that when from settlement or other causes the pipes
cease to be butted closely together the joint opens. The tips and linings have also
been made cylindrical and joints so made remain tight even when the pipes are
not closely jointed but on the other hand the joints are inconveniently rigid and the
pipes cannot be laid otherwise than in a perfectly straight line unless the pipes
themselves be curved. It is very difficult also when a line of pipes is laid in this
manner to remove an intermediate pipe.
According to this invention I make the joints with the lining to the socket
cylindrical and with the tip on the extremity of the pipe of spherical curvature.
I also form the lining with inclined surfaces to facilitate the entrance of the tip
of the next pipe to its place within the socket.
Joints so made are not rigid and yet remain tight when the pipes are not closely
butted together.
An intermediate pipe may also be readily removed from a line of pipes laid with
the improved joint it being necessary only to move three or four lengths. The
pipes will not be injured in moving and consequently the same pipes can at once
be replaced and the drain made good. The arrangement may be varied by making
the tip with a cylindrical surface and the lining with a globular inner surface but
this is less convenient.
Dated thia 11th day of Dan
1007

page_text: I, OSCAR ELPHICK of Doultons Sanitary Engineering Works Lambeth Engineer
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 has for its object improvements in the joints of stoneware pipes.
It is common after stoneware pipes have been made to tip the end and to line
the socket with composition so that when the pipes are placed together a closely
fitting joint is formed.
The tips and the linings have in some cases been formed with spherical surfaces
which admits of the pipes being laid in other than perfectly straight lines and yet
with tight joints so long as the pipes are butted closely together but the arrange-
ment is open to the objection that when from settlement or other causes the pipes
cease to be butted closely together the joint opens. The tips and liuings have also
been made cylindrical and joints so made remain tight even when the pipes are
not closely jointed but on the other hand the joints are inconveniently rigid and
the pipes cannot be laid otherwise than in a perfectly straight line unless the pipes
themselves be curved. It is very difficult also when a line of pipes is laid in this
manner to remove an intermediate pipe.
According to this invention I make the joints with the lining to the socket
cylindrical and with the tip on the extremity of the pipe of spherical curvature.
I also form the lining with inclined surfaces to facilitate the entrance of the tip
of the next pipe to its place within the socket.
Joints so made are not rigid and yet remain tight when the pipes are not closely
butted together.
An intermediate pipe may also be readily removed from a line of pipes laid with
the improved joint it being necessary only to move three or four lengths. The
pipes will not be injured in moving and consequently the same pipes can at once
be replaced and the drain made good.
In order that my said invention may be fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a plan partly in section of portions of two pipes jointed together in
accordance with my invention.
Figure 2 is a side elevation and Figure 3 is an end elevation of the socket end
of one of the pipes.
Figure 4 is a side elevation and Figure 5 is an end elevation of the tip end.
a a is the cement lining of the socket, it is cylindrical within except at the
entrance where the surfaces are rounded and inclined to facilitate the entrance of
the tip end of the next pipe. b is the cement tip to enter within the socket a, its
outer surface is globular in form and it is of a size to fit the lined socket. Figure 1
shows the positions which the parts take when the joint is oblique.

page_text: It will be seen that a tight joint is made and this without butting the pipes end
to end; in the position shown the tip may be drawn back somewhat more out of
the socket or advanced further into it without deranging the joint.
I can employ the same cement as is now in use for lining the sockets and tipping
the ends of pipes and I cast it into the socket and on to the tip by the aid of
moulds as is well understood.
These pipes may be laid as the drawing clearly shows in a curve of comparatively
small radius. Although it is advisable, it is not essential that the lining to the
socket and the tip should be made perfectly truly to the forms described the
advantages of my invention as above set forth may be attained without mathematic
accuracy of form.
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:-
Stoneware pipes having at one end a socket cylindrically lined with cement or
suitable composition and at the other a cement tip with a surface of globular
form the said lined sockets and tips when the pipes are laid forming joints which
are not rigid and which remain tight when the pipes are not closely butted
together.