An Improved Drain-valve and Stench-trap.
Year: 1891

page_text: COMPLETE SPECIFICATION.
An Improved Drain-valve and Stench-trap.
1, GEORGE PRIEST, of The Neville Hotel, Saltmead, Canton, Cardiff, in the
County of Glamorgan, Hotel Keeper, 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 consists in a drain-valve and stench-trap combined as one appliance.
The said appliance is designed mainly for application to sewers or drains to which
tidal water has access and it serves as a means for running off, at will, surface water
in cellars, house-basements and other like low-lying places. It acts also as a trap
to prevent sewer gas and offensive and uoxious effluvia from escaping into the place
which it is employed to drain.
In the accompanying sheet of drawings
Fig. 1 represents a vertical section of my improved combined drain-valve and
stench-trap.
Fig. 2 is a plan, and Fig. 3 a horizontal section on the line a Fig. 1.
Fitting into the shell a is a conical chamber resting at bottom on a pin c.
Towards the top the chamber is provided with a square or rectangular smug d
taking into an annular groove e provided in the shell a. At one side the shell a
has an aperture f. A similar aperture g is made in the wall of the chamber b. The
top of the latter has inlet orifices h of which those in the middle group are pre-
ferably rounded at some of the corners, as shown at Fig. 2, so as to comfortably fit
the fingers when inserted to raise or turn the chamber within the shell a.
Extending downwards into the chamber and springing from the top thereof is a
partial partition i which does not extend to the bottom of the chamber.
In practically applying the apparatus the shell or casing a is sunk until the top,
corresponding to the line y, y Fig. 1, is flush with the floor of a cellar, house-
basement or other like place and a connection is made to a sewer or drain pipe as
at k so that the outlet apertures and g open into the connecting pipe.
Any water finding its way into the said cellar, house-basement or like place flows
through the orifices into the chamber and rising therein finds exit by the
apertures and g into the drain-pipe k. The chamber is always charged with
water up to a level corresponding to the lower edge of the aperture g. Conse-
quently, sewer gas and noxious effluvia are trapped and prevented from passing
through the appliance and escaping by the inlet orifices h.
By turning the chamber to a sufficient extent within the shell or casing a,
which is done by the fingers inserted in the middle group of holes in the top, the
communication with the sewer or drain may be closed at will so that tidal water
rising to the appliance is shut out from the place which the appliance is employed
to drain. The chamber is readily removed for cleansing or other purpose.
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 :-
A combined drain-valve and stench-trap consisting of an outer casing such as a
with side aperture f, and a hollow chamber such as contained and supported
within the said casing, the said hollow chamber having inlet orifices at top and a
side aperture y corresponding with the side orifice in the outer casing and a partial
division plate such as i between which and that side of the chamber at which the

page_text: outlet aperture is situated are no inlet orifices, substantially as hereinbefore
described with reference to the accompanying drawings and for the purposes
specified.
DL
1
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11001
NICHOLAS WATTS,
Bristol Bank Buildings, Bristol, Agent.