Improvements in and relating to Pipe Joints.
Year: 1893

page_text: e of Application, 7th Oct., 1893—Accepted, 11th Nov., 1893
COMPLETE SPECIFICATION.
Improvements in and relating to Pipe Joints.
I, DAVID WILSON, of Little Heath Charlton Sanitary Plumber, 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 improvements in pipe joints and has for its object to
provide a means of joining pipes so that, in the case of sewer pipes, the escape of
noxious gases shall be prevented, and further to provide a joint that shall be strong
and serviceable for pipe joining of every description.
In carrying my invention into practice, I provide a circular plate of iron, or
other suitable material, centrally perforated in order that it may conveniently pass
over the end of the pipe, and furnished with perforated lugs or ears for screw
bolts. Over the end of the pipe is placed a ring of india-rubber or other suitable
material of such a size that it grips the pipe tightly at a short distance from the
end thereof, and against which the aforementioned plate bears. The end of the
pipe having been inserted within the socket of the next length, a semi-circular
plate also furnished with perforated lugs or ears is placed around the second pipe,
just below the flange, the two plates being then drawn together by screw bolts.
In order that my invention may be more fully understood, I will now proceed to
describe same with reference to the accompanying drawings in which
Fig. 1 is a plan of the top plate,
Fig. 2 a plan of the semi-circular or bottom plate and
Fig. 3 an end view of the plates with the bolts in position.
Fig. 4 is a modified form of bottom plate,
Fig. 5 is a side elevation of the pipe with the plates and ring in position ready
for fixing and
Fig. 6 shows the pipe with the joint completed.
In joining pipes according to my improved method, I provide a centrally
perforated plate a provided with lugs c (Fig. 1) and a semi-circular plate ↳ also
provided with perforated lugs or ears c¹ (Fig. 2) and in proceeding to join the
pipes together the plate a is passed over the pipe p' and a ring placed near the
end of the same, against which the end of the plate bears, a second plate b is placed
around the pipe p and bears against the flange f of the same.
The end pipe p¹ having been inserted within the socket of the pipe p, screw
bolts d are passed through the lugs or ears c c¹ of the plates a b and the two plates
are drawn tightly together, and secured in this position by the nuts n the ring r
bearing tightly against the edge of the flange and preventing the pipe from being
withdrawn owing to the frictional resistance between the pipe and the rubber
(or other material) of which the ring is composed.
The object of forming the second plate of semi-circular form is obvious from
Figs. 5 & 6 of the drawings, as it would be impossible to pass a plate similar to
Fig. 1 along the pipe owing to the branch pipe p², but where no obstruction was
present a plate similar to Fig. 1 could be employed for the second or bottom plate.
Where additional strength is required in joining a pipe similar to that shown in
the drawings, and where two plates such as a Fig. 1 could not be employed owing
to the branch pipe på or other obstruction, two semi-circular plates b¹ (Fig. 2)
could be employed the edges overlapping one another as shown at Fig. 4.
The number of perforated lugs or ears could be increased according to the size
of the pipe required to be joined, but from two to four will be found sufficient for
general purposes and for additional security any further packing may be placed
between the spigot and the socket before joining them together.
D

page_text: 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 :-
1. The improved method of joining pipes by means of the plates ab in com-
bination with the ring c and bolts & substantially as herein described and shown.
2. The new or improved means for joining pipes, arranged substantially as
herein described and shown and for the purpose set forth.
Dated this 6th day of October 1893.
F. G. CASSELL,
Of Cassell & Co.,
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.