IMPROVEMENTS IN PIPE JOINTS
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by James Henry Moore at the Office of
the Commissioners of Patents on the 16th June 1882.
JAMES HENRY MOORE of Bournemouth in the County of Hants Surveyor
"IMPROVEMENTS IN PIPE JOINTS."
'
This invention has for its object, improvements in pipe joints
For this purpose one end of each length of pipe is formed with a rebated socket,
the interior of which is tapered.
At the front end of the socket is a flange all around the annular face of which is
a groove into which is sprung a gutta percha or other compressible ring or tube.
Three or it might be other number of slots are made in the flange of the pipe at
distances apart around its circumference for bolts to be passed through
On that side of the pipe which is to be placed downwards the metal of the
socket is increased in thickness to obtain increased strength and to form a flat bed
for the pipe to rest upon. Where the flange comes round to this thickened part
the flange is gradually diminished in depth and made to die away into it.
The other end of the pipe has a tapered spigot corresponding accurately with
the tapered socket, the depth of the rebate and of the spigot end being the same
so that when the spigot end of one pipe is inserted into the socket end of another
pipe a smooth interior is secured.
At the base of the tapered spigot is also a flange dying into the strengthened
metal of the bottom of the pipe as before. This flange is provided with a similar
groove as the other and also has corresponding slots formed in it. The spigot end
of one pipe is placed into the socket end of another pipe and the two are drawn
together by some square headed bolts and nuts passed through the slots. When
the tapered portions of the joint are thus brought together the gutta percha or
other ring or tube is compressed into the two grooves in the flanges and a perfectly
tight joint is the result
The above joint is more especially applicable for metal pipes but in some cases
more especially if the pipes are to be of earthenware I modify the joint as
follows.
Each pipe I make with a socket at one end like the socket of an ordinary
earthenware pipe The plain or spigot end of the pipe I make with two studs
Dan 31
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page_text: projecting outwards from it very near its end. In the interior of the socket I
make two longitudinal grooves for the studs to pass into and at the rear end of
each groove I make a sideway extension of the groove large enough for the studs
to enter. When the plain or spigot end of one pipe has been inserted into the
socket end of another pipe and a partial turn is given to one of them the studs on
the spigot end enter the sideway extensions of the grooves in the socket and the
two pipes are locked together.-the projections and the recesses into which they are
to enter are both made taper so that the spigot end of the one pipe gets drawn
forcibly into the socket of the other pipe. All around the bottom of the socket a
groove is formed into which is secured an elastic or compressible tubular ring
The extremity of the spigot end of the pipe is shaped to bear against the ring.-As
the tubes are locked together the ring gets compressed between them and a secure
joint is made. Pipes jointed together in the manner above described are so securely
locked that they may be lifted up without disturbing the joints