Improvements in Drain Connections.
Year: 1894

page_text: PROVISIONAL DECILIATION.
Improvements in Drain Connections.
I, BURTON RICHARD PHILLIPSON of 10 Lower Baggot Street Dublin Engineer
do hereby declare the nature of this invention to be as follows:-
According to my present invention I make branch inlets leading obliquely from
drains to the surface of the ground in which they are laid and fix in connection with
them at the ground surface metal chamber with inner and outer door or airtight
stopper.
My present invention is a further developement and improvement upon my
invention No. 9716 patented 15th August 1885. According to my Patent of that
date I used drain pipes with oblique branches leading into them the branches being
the same size or smaller than the main course of the tube. I have since found it
desirable to have the branch pipes of a larger bore than the main course of the
pipes, as it gives increased facility for examining the drains or for passing tools into
them for clearing them should the drain become choked.
In my first Patent 1 fixed an inner and outer moveable door parallel with the
ground surface, according to my present invention I use an outer cover parallel
with the ground surface and an inner airtight cover set in a chamber one side
of the said chamber is sloped so as to be at right angles to the branch leading to the
drain, this arrangement gives increased facility for looking into or working at the
In cases
drain and reduces difficulty in staunching the inner airtight covers.
where ventilation of the drain is desired 1 omit the inner stopper and use a
perforated outer cover upon the surface box.
Dated this the 21st day of September 1894.
BURTON RICHARD PHILLIPSON.
Improvements in Drain Connections.
BURTON RICHARD PHILLIPSON of 10 Lower Baggot Street Dublin 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:-
According to my present invention I make branch inlets leading obliquely from
drains to the surface of the ground in which they are laid, and fix in connection
with them at the ground surface a metal chamber with inner and outer door or
airtight stopper. My present invention is a further developement and improvement
upon my invention No. 9716 patented 15th August 1885.
According to my Patent of that date I used drain pipes with oblique branches
leading into them, the branches being the same size or smaller than the main course
of the pipe. I have since found it desirable to have the branch pipes of a larger
bore than the main course of the pipes as it gives increased facility for examining
the drains or for passing tools into them for cleaning should they become choked.
In my first Patent I fixed an iuner and outer moveable door parallel with the ground
surface.

page_text: According to my present invention I use an outer cover parallel with the ground
surface and an inner airtight cover set in a chamber, one side of said chamber
is sloped so as to be at right angles with the branch leading to the drain, this
arrangement gives increased facility for looking into or working at the drain and
reduces the difficulty in staunching the airtight inner covers.
In cases where ventilation of the drains is desirable I omit the inner stopper and
use a perforated outer cover upon the surface box.
Fig. A represents my drain pipe with the branch connection of larger bore than
the main course.
Fig. B represents my drain inlet with surface cover and inside airtight
stopper.
For the purpose of closing the opening to drain I use a circular stopper with a
washer of asbestos, felt, india rubber or other elastic material, a bridge bar and
binding screw as shown in Fig. B.
Fig. C represents the ventilating chamber I use in connection with an oblique
branch pipe.
In cases where a trap to receive surface water is required I use instead of my
ordinary drain inlets such as are shown in Fig. B & C, a combined trap and drain
inlet as shown in Fig. D, which is made as follows:-The top frame a and the
chamber b. are set permanently, the grid c, and the dip tube d. which forms the trap
are moveable and are lifted out when the insertion of a cleaning tool to the draiu e
is desired. There are three stems attached to the grid c(xx) which steady the
grid in its seat and prevent its tipping when pressure is placed upon one side of it.
Having now particularly described & ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is-
The use of a branch pipe carried from the ground surface obliquely into a
drain, the branch being of a larger bore than the main course of the drain see
Fig. A. The use upon a drain or sewer of a chamber or surface box with a
sloping side, which sloping side is set at right angles with a shaft leading to the
drain see Fig. B.
The use of a drain inlet box substantially as shown in Fig. B.
The use of an oblique branch pipe leading from a drain having at its upper
end a ventilating chamber made with an outlet leading out of the side of the
chamber which side is set at right angles with the branch pipe as shown in
Fig. C.
The use of a stopper, washer, bridge, and binding screw as shown in Fig. B upon
a drain inlet for the purpose of making an airtight joint.
The use of a combined cleaning inlet and surface trap as shown in Fig. D the
grid and dip tube being removeable.
The use on a trap cover or drain inlet of three or more stems as shown in Fig. D
which steady it and prevent it tipping.
Dated this the 10th day of June 1895.
BURTON RICHARD PHILLIPSON.