Improvements in Earthenware Pipe Joints.
Year: 1898

page_text: Date of Application, 9th Nov., 1898-Accepted, 21st Jan., 1899
Improvements in Earthenware Pipe Joints.
I. ROBERT EWING, of 68, Victoria Street, Westminster, London, in the County
of London, England, Sanitary Engineer, do hereby declare the nature of this inven-
tion 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 improvements in the joints of earthenware, and other
pipes, particularly in that class of joint described in the Specifications of Letters
Patent No. 14926 dated Aug. 4 1893, granted to me, where the sockets of such
joints have an inner wall forming a continuation flush with the interior of the body
of the pipe, & shorter than the exterior wall of said socket.
The object of my invention is to secure a strong air and watertight joint, by the
running in of liquid cement, while the pipes are in still or moving water during
the process of laying.
My invention consists on the one end of pipe of a bell shaped socket A Fig. 1 in
the accompanying drawings having an inner wall B Fig. 1, forming a continuation
flush with the interior of the body of the pipe, and shorter than the external
wall C, Fig. 1 of said socket; and on the other end of pipo a spigot D Fig. 1
having on its extreme end a small bell shaped faucet, E Fig. 1, and a short distance
from this small faucet, towards the opposite end of pipe, an external flange F,
Fig. 1, rebatted on its face or edge G Fig. 1 to receive the outer end or mouth of
socket, H Fig. 1.
The joint is made by placing a roll of clay or other plastic material in the small
faucet E Fig. 2 on the extreme end of spigot, & a similar roll on the rebatted
face G Fig. 2, of external flange F Fig. 2, of spigot, and driving
the latter into the socket Fig. 3 A on the other pipe and pouring
liquid cement into the joint by means of one or more holes
outer wall of socket.
Fig. 1 & 3 in the
The joint shows in longitudinal section Fig. 1 the short inner wall B of the
socket received into the small faucet E on the extreme end of spigot, with the
clay or plastic material wedged in between them: and mouth of socket H resting,
or nearly so, in the rebat G of the external flange of spigot, with the clay or
plastic material wedged in between the flange and mouth of socket; also such
spaces between the spigot and socket parts as to allow the liquid cement to flow
round the whole of the exterior, & into a part of the interior of the small faucet E
and when set, to effectually key in on all sides this small faucet in the large socket,
& so add greatly to the strength & soundness of the joint.
The small faucet on spigot end, & the inner wall of the socket may be lined with
bands of composition, & the external flange of spigot may be formed or lined with
bands of composition, & the mouth of socket may be similarly lined to fit accurately
& so dispense with the dressings of clay or other plastic material.
The exterior of spigot & interior of socket are scored circumferentially to allow
the cement to unite to the eartheware the more effectually.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, & in what manner the same is to be performed I declare that what I
claim is:-
(1) A pipe joint with a bell shaped socket A, having a short inner wall B, in
combination with a spigot having the annular collar or shoulder F and the
rebat G, on the face of said collar or shoulder; and the small bell shaped faucet E
on the extreme end of said spigot, substantially as & for the purposes set forth in
the accompanying specification and drawings.
(2) A spigot and socket pipe joint showing in longitudinal section the short
inner wall B of socket seated in the small bell shaped faucet E, on extreme end of
spigot and the end of socket H resting in the rebat G of the annular collar or
shoulder F of spigot; substantially as & for the purposes set forth in the accom-
panying specifications and drawings.
1000