Improvements in Drain and other Pipes and Pipe Joints.
Year: 1889

page_text: Date of Application, 21st Mar., 1869
Complete Specification Left, 17th Dec., 1889-Accepted, 18th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in Drain and other Pipes and Pipe Joints.
I, ROBERT Ross CLUNIS of The Gables Hurstpierpoint Sussex but at present of
Singapore, Straits Settlements Engineer, do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to produce a pipe joint capable of being simply
rapidly and effectively made even by unskilled labour.
To secure these desirable results I propose to form an inward bevel around the
edge of the socket at one end of the pipe section, and near the other end of such
section to form a flange or collar, the end of the pipe proper being bevelled. The
cementing material being roughly laid within the socket, the flanged end of the pipe
next in order is forced therein until the bevelled end of said pipe comes practically
in contact with the pipe end within the socket, and at the same the shoulder comes
in contact with the outer edge of the socket, the expressed cement being cut off by
the bevels, and a complete and closed joint being effected.
In making a joint in this manner the tendency is to press the cement into the
annular spaces around the angle of the collar and of the socket and along the joint,
and as there is pressure both ways the joint may be called doubly compressed, while
as the cement is cut off by the bevelled ends, a clean flush joint is made both inside
and out, the cement being unexposed.
Dated this 21st day of March 1880
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London, Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Drain and other Pipes and Pipe Joints.
I, ROBERT Ross CLUNIS of The Gables Hurstpierpoint, Sussex, but at present of
Singapore, Straits Settlements, 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 :-
The object of this invention is to produce a pipe joint capable of being simply,
rapidly, and effectively made, even by unskilled labor.
To clearly explain the nature of my invention reference is made to the
accompanying drawing forming part of this specification, in which
Fig. 1 is an elevation partly in section shewing two pipes about to be joined
together.
Fig. 2 is a sectional elevation of three pipes, the right hand one being joined to
the centre one.
The socket end a has an inward bevel 6 formed thereon, while at a short distance
from the other end of the pipe I form a flange or collar c and bevel the end of
the pipe proper as at d.
When the pipes are to be joined together the cementing material is roughly laid
within the socket end a, and the end of the pipe next in order is forced in until its
bevelled end d comes in contact with the pipe end within the socket, and at the
same time the shoulder c comes in contact with the bevelled edge b of the socket
end a, the expressed cement being cut off by the bevels so that a complete closed
joint is effected.
In making a joint in this manner the tendency is to press the cement into the
annular spaces around the angle of the collar and of the socket and along the joint,
and as there is pressure both ways the joint may be called doubly compressed, while

page_text: as the cement is cut off by the bevelled ends a clean flush joint is made both inside
and out, with the advantage that the cement is enclosed and thus in no danger of
being attacked or washed out.
It will be evident that the particular construction shown may be varied without
departing from the principle of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
A drain or other pipe having at one end a socket with an inward bevel, and at
the other end a bevel and a flange a short distance from same, substantially as and
for the purposes described.
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London, Applicant's Agent.