Year: 1886

page_text: -Date of Application, 11th Dec., 1886.
Complete Left, 12th Sept., 1887
.Complete Accepted, 14th Oct., 1887
I ARTHUR RAMSDEN of The Vestry Hall, Chiswick, in the County of Middlesex,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved joint for sewer and other pipes. The joint is
of the spigot and socket kind, and is formed by an annular rib or tenon projecting
from the end of one pipe fitting into a corresponding annular groove or socket
formed in the end of the other pipe to be joined. The ends of the pipe are suitably
thickened or flanged externally to afford room for the annular tenon and groove, and
the end faces of the pipes both at the inside and outside of the said tenon and groove
abut close together.
One or more holes are provided through the outer wall of the annular socket, and
opposite the bottom of the groove through which the cement exudes when the spigot
end is driven in, thus showing that the joint has been properly made.
A. RAMSDEN.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: I, ARTHUR RAMSDEN of The Vestry Hall Chiswick in the County of Middlesex
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 :-
My Invention relates to an improved joint for sewer and other pipes, whereby the
laying of such pipes is greatly facilitated, as the joints can be quickly made water
tight by means of cement or composition which is not liable to run out of the joint
into the pipe.
Reference is to be had to the accompanying drawings forming part of this Speci-
fication, wherein Figure 1 is an external top view of the improved joint and figure 2
is a section of the same through the longitudinal axis of the two pipes. Figure 3
shews a similar section of the spigot end when ready for making a joint with the
socket of the adjacent pipe. The same letters of reference indicate the same parts in
all the figures.
The joint is of the spigot and socket kind and is formed by a straight or parallel-
sided annular tenon or spigot a projecting from the end of the one pipe, and a
corresponding annular socket b formed in the end of the other pipe. The ends of the
pipes are suitably thickened externally, as shewn, to afford room for the annular tenon
or spigot a and socket b and permit of the relative proportions of the parts being
substantially as shewn, so as to ensure adequate strength and also leave room for the
cement or other luting. The surfaces of the spigot a and socket bare roughened or
slightly grooved circumferentially to afford a key for the luting and ensure a tight
joint. The end faces c c inside and outside the socket 6 of the one pipe come opposite
to corresponding end faces d d inside and outside the annular tenon or spigot a of the
other pipe, the end faces abutting nearly together with a little cement between them.
One or more vent holes e are made through the outer wall of the annular socket b
opposite the bottom of the groove, in order that, when the spigot end a, charged with
plastic cement or other luting as shewn in figure 3, is forced into the socket b, the air
may escape and the cement after filling up all the cavities of the groove may exude
thereat and thus shew that the joint has been properly made. Or liquid cement may
be poured in at these holes the outer flange of the pipe having first been made water
tight by means of plastic cement or composition.

page_text: Having now particularly described and ascertained the nature of the said Invention
and in what manner the same is to be performed I declare that what I claim is ;
The improved spigot and socket joint for sewer and other pipes consisting of an
annular parallel sided tenon or spigot on the one pipe received in a corresponding socket
in the other pipe with opposing end faces on the two pipes within and without the
spigot and socket, the joint being made with a plastic luting as described and shewn
in the drawings.