Improvements in or relating to Drain Pipes.
Year: 1894

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Drain Pipes.
We, JOHN JONES of 40 Sydney Street, Chelsea, Builder, and WILLIAM SYKES
of 18 New Bridge Street, Blackfriars, in the County of Middlesex, Civil 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 :-
This invention has for its object to improve the construction of the curved open
pipes or channels usually employed in the inspection chambers of drains. Under
existing arrangements these channels, though fitted for beneficial purposes viz. for
enabling the operation of the drains to be properly inspected and cleaning rods to
be inserted into the drains should they become stopped-up, or drain stoppers to be
applied for testing purposes, often themselves create a nuisance by allowing.
sewage to become deposited and accumulate on the floor or benchings of the
inspection chamber at either side of the channel. This is the result of the sewage
being delivered to the channels with too much impetus and thereby shooting over
the "banks" of the channels or edges of the pipes when rounding the bends; by
the present invention this difficulty is overcome.
In the accompanying drawings:-
Figure 1 is a plan of a bend or channel constructed according to this invention
the channel into which it delivers the sewage being indicated in dotted lines and
the bend or bridge thereof being shown partly broken away.
Figure 2 is a perspective view of the two channels shown in Figure 1.
Like letters indicate like parts throughout the drawings.
A is the bend or channel piece connected at the socket or receiving end A' with
the pipe which conducts the drainage away from the house drain and at the other
or discharging end A2 cemented or secured in the ordinary manner on or to one
edge of the usual channel B leading to the main drain.
At A³ the bend or channel A is bridged across, sufficient opening however still
being left as at A to allow of the cleaning rods or drain stoppers being inserted in
the "house drain," and for enabling the necessary inspections to be made. The
outer wall A' of the bend A towards the discharging end, is slightly curved inwards
or nearer to the inner wall A so that the sewage may be delivered into B at a
smaller angle than has hitherto been the case of a bend of the same degree.
A lip or projection C extends more or less round the inside of the discharging
end of the pipe especially in the corner formed by the junction of the walls A³
and A' so as to break the rush of the sewage, more particularly the solid matter
and cause it to be delivered more in the direction of the channel B.
The bridge A at the discharging end A² may also be provided with a lip which
tends to break the rush of the sewage and prevent it from shooting across B, and
this end is also arranged to project slightly beyond the edge A' which similarly
serves for checking the rush of the sewage and causing it to be properly delivered
into B.
The before described improvements may be applied to right and left handed
bends of any degree of curve and if desired, though such an arrangement may not
be as satisfactory as that before described I may construct the bridge or cover A³
so as to be removable from the bend.
The before described channel A is preferably flattened at the underside.

page_text: 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. The combination with a curved drain-channel or open pipe of a bridge or
cover substantially as and for the purpose described.
2. The combination with a curved drain pipe of an opening such as A* substan-
tially as and for the purpose described.
3. A curved drain-channel or open pipe such as A bridged over as at A³
the outer wall A gradually approaching the inner wall A towards the discharging
end at which part the pipe or bend is provided with lips substantially as and
for the purpose described and illustrated in the accompanying drawings.
4. A complete right or left-handed bend constructed substantially as described
.and illustrated in the accompanying drawings.
1024
JOHN JONES.
W. SYKES.
W. P. Thompson & Boult,
Agents for the Applicants.