Improvements in Sanitary and like Pipes.
Year: 1894

page_text: Date of Application, 5th Apr., 1894-Accepted, 25th May, 1894
COMPLETE SPECIFICATION.
Improvements in Sanitary and like Pipes.
We GEORGE FREEMAN of Gordon House, Frederick Place Brighton in the
County of Sussex, Contractor and WILLIAM SHOOSMITH of 15 Ivory Place
Brighton aforesaid Sanitary Inspector 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 :-
Our invention is intended to provide an improved pipe for sanitary or like
purposes whereby a more perfect and close fitting joint is established between two
contiguous pipes, better facilities are provided for making said joint, greater speed
and less expense in laying down such pipes is ensured, our means for jointing said
pipes being applicable to straights, bends, junctions or gullies, as they can be laid
circular or in a straight line or gradient as required thereby doing away with
uneven joints in the drain or the like.
In order to carry out our invention we form or mould a pipe from clay stone-
ware or other plastic substance the spigot or butt end being made tapering and the
socket end being bell mouthed.
On the accompanying sheet of drawings are three figures representing in
Figure 1 the butt or spigot end of our improved pipe, in
Figure 2 the socket end of said pipe, and in
Figure 3 the joint formed by the junction of the spigot and socket ends of two
pipes the interstices being filled with Portlaud or other cement applied in a plastic
state.
The spigot end of the pipe is of the ordinary internal diameter the outside only
being tapered the tapered portion being further grooved with a number of rings A
presenting in cross section the appearance of saw teeth or of any equivalent shape.
The socket end of the pipe is bell mouthed or cone shaped and is grooved
internally with rings or grooves B corresponding with those on the spigot portion.
The inside of the socket ends in a bevelled seating C.
The socket portion is first lined with plastic cement and then the tapered end of
another pipe is pushed therein as shown in Figure 3 (or it may be pushed close up
to the seating C). The fringe of cement can easily be scraped away at D so as to
offer no obstruction and may be formed into a sort of collar as at E which bearing
against a shoulder F on the spigot end assists in holding the same in position.
It will be found that sockets and spigot ends made in the above manner give
greater security against leakage through a settlement or subsidence of the ground,
are more easy to put together the workman having no occasion to injure his hands
by tucking the cement into the socket, and are capable of withstanding the various
tests, whether by smoke, ether, peppermint, water or other process, to which pipes
and joints are often subjected. They can be made in any convenient size according
to the purpose for which they are required.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. In sanitary and like pipes the use of an externally tapered and concentrically
grooved butt or spigot end and a bell mouthed socket internally and concentrically
grooved, substantially as herein before described and as illustrated by the accom-

page_text: 2. The means for and method of jointing sanitary and like pipes, substantially as
herein before described with reference to the accompanying drawings.
Dated this 4th day of April 1894.
POPPLEWELL & Co.,
32, Southampton Buildings, London, W.C., Agents for the Applicants.