Improvements in Apparatus for Facilitating and Simplifying the Testing and Flushing of House Drains.
Year: 1890

page_text: Date of Application, 11th Jan., 1890
Complete Specification Left, 13th Oct., 1890-Accepted, 29th Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Facilitating and Simplifying the
Testing and Flushing of House Drains.
WILLIAM REYNOR 266 North End Road London County of Middlesex Plumber
& Contractor do hereby declare the nature of this invention to be as follows
:-
1 propose to secure a copper flap valve on end of 6 in. drain pipe as it enters the
inspection chamber from house on its way to main sewer. The valve is made water
tight having an arm on flap, to which a rod is jointed and which passes through cast
iron cover of chamber and fitted to take a key which opens and closes the valve by
means of a screw on end of rod. The key cannot be removed while the valve is
closed, and the valve is so balanced that it will not close should the gear go wrong.
When this valve is closed the bath waste or other water is let run into drains, which
will fill them as well as back inspection chamber. In this chamber there is a float
having a copper rod attached with button on top. This rod passes through cast iron
cover of chamber, and rises as the water rises in the chamber. If the drains be
sound the button will remain at the same height. If not it will lower. The valve may
then be opened and the water will rush away cleaning the drain on its way. All this
is done without opening the inspection chamber. It will also secure more careful
work in house drainage, as any person can prove them.
1000
W. REYNOR.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Facilitating and Simplifying the
Testing and Flushing of House Drains.
WILLIAM REYNOR of 266 North End Road S.W. in the County of Middlesex
Sanitary Engineer and Contractor 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:
The object of my invention is to provide facilities for flushing and testing house
and other drains. For this purpose 1 provide an opening to the drain in a front
inspection chamber at a point where the drain communicates with the main sewer by
way of an intercepting trap. The opening from the drain in the front inspection
chamber is controlled by a valve so that it may be closed when required to stop the
outflow and allow water admitted to the drain to accumulate and rise in a back
chamber constructed at the entrance to the drain. The back chamber is provided
with a float to operate an indicating arm which should remain down when the outlet
of the drain is open to the sewer and should rise when water is admitted to the drain
after closing the outlet.
By this arrangement subsidence of the indicating arm in the back chamber after
ceasing to admit water to the drain will denote leakage from the drain but constant
maintenance of the arm will denote that the drains are sound and the water
accumulated therein serves to effectually flush the same immediately upon reopening
the valve at the outlet.
In the accompanying drawings in all the figures of which the same part is indicated
by like letters of reference,
Figure 1 is a sectional elevation of back chamber.
Figure 2 is a sectional elevation of the front inspection chamber.
The drain pipe A entering the back chamber B is partly open as shewn at C,

page_text: the entrance into which it is provided with a counterpoised clack valve E which may
be operated by means of a screw F, and connecting rod G. The screw F is to be turned
by a key H and in order that the valve E may not be left closed by negligence I
provide a hinged catch J which grasps the key H when the screw F is screwed down,
a collar a being provided on the key H for this purpose, and releases it only when
the screw F is unscrewed again. K is a connection at which a ventilating pipe may
be attached. L is the intercepting trap between the drain and the main sewer M is
a junction communicating beyond the intercepting trap L for the purpose
reaching any obstruction in the pipe leading to main sewer. I close this junction
pipe by means of a plug having the rod N and for additional security I provide at the
extremity of the junction pipe M within the front inspection chamber a clack valve P
closed by means of the screw Q. O, is a float P the indicating arm.
of
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.
1st. The combination of the front inspection chamber and the back chamber for
controlling the outlet from the drain to detect leakage therefrom and to provide an
accumulation of water therein to flush the same substantially as described.
2nd. An apparatus for controlling the outlet of drain the hinged latch G for
securing the key while the valve is closed and releasing it when the valve is reopened
substantially as described.
Dated this Eleventh day of October 1800.