Improvements in Traps for Preventing the Return of Gases, Sewage Matter, and the like.
Year: 1886

page_text: Improvements in Traps for Preventing the Return of Gases, Sewage
Matter, and the like.
I, JAMES PROCTER JONES of Orford Street, Warrington in the County of Lancaster,
Engineer, do hereby declare the nature of this invention to be as follows:-
The object of this invention is to provide a simple and effective trap for preventing
the return of gases or fluids in pipes, sewers, and the like through which sewage,
waste liquors or other matters flow.
It consists essentially of a chamber or reservoir divided into two or more compart-
ments by one or more division plates or diaphragms having an outlet valve which
permits the free passage of fluids in one direction, and closes when any pressure is
applied in the opposite direction, and prevents any return or back flow.
In carrying out the invention I construct a chamber preferably of cast iron (though
it may be made of any other suitable material). This chamber is divided vertically
into two or more compartments by division plate or plates extending from the top
nearly to the bottom where a space is left for the flow of the liquid from one chamber
to the other. Or the division plate may extend to the bottom of the chamber and be
perforated to allow the flow of the liquid. The first chamber is provided with a
grating or other inlet, and the liquid passes from one chamber to the next under the
division plate, thus forming a seal or trap to prevent the back passage of gases. The
division plate also stops any stones, chips or other solid matter of large diameters
that would interfere with the free action of the outlet valve. In front of the discharge
pipe, or in other suitable position is placed a valve which allows the fluids to pass
freely in one direction, but checks their passage in the other direction. The outlet
[Dries Q.31

page_text: valve is preferably a ball valve on a horizontal seating, though of course a flap or dead
lift valve may be employed and the seating either inclined or vertical.
The division plate and valve casing and seat are preferably formed in part with the
top of the chamber so as to be easily removed to allow of the whole internal part of
the chamber being easily cleaned and examined.
A trap constructed in accordance with this invention will prevent the backward
flow of gases, or of sewage or other water in places where the sewage discharges into
the sea or a tidal river.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, and
323, High Holborn, London,
Patent Agents for the Applicant.

page_text: I, JAMES PROCTER JONES of Orford Street, Warrington, in the County of Lancaste
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 :-
The object of this invention is to provide a simple and effective trap for preventing
the return of gases or fluids in pipes, sewers, and the like, through which sewage,
waste liquors or other matters flow.
It is best described by aid of the accompanying drawings in which
Figure 1 shows a longitudinal sectional elevation of trap, and,
Figure 2 front elevation taken through the outfall.
,
It consists essentially of a chamber or reservoir divided into two or more com-
partments A, A', etcetera, by one or more division plates or diaphragms B, having an
outlet valve C, which permits the free passage of fluids in one direction, and closes
when any pressure is applied in the opposite direction, and prevents any return or
back flow.
In carrying out the invention, and applying it to ordinary street traps such as
shown in drawing, I construct chamber A, A¹, preferably of cast iron (though it may
be made of any other suitable material). This chamber is divided vertically into two
compartments A A' by division plate B, extending from the top nearly to the bottom,
where a space is left for the flow of the liquid from one chamber to the other. Or
the division plate may extend to the bottom of the chamber, and be perforated to
allow the flow of the liquid. The chamber A is provided with a grating D) or other
inlet, and the liquid passes from one chamber to the next under the division plate B,
thus forming a seal or trap to prevent the back passage of gases. The division plate
also stops any stones, chips, or other solid matter of large diameters that would
interfere with the free action of the outlet valve. In front of the discharge pipe, or
in other suitable position is placed a valve seat E and valve which allow the fluids
to pass freely in one direction, but check their passage in the other direction. The
outlet valve is preferably a ball valve formed of a wooden core coated with india
rubber, of about from one fourth to one tenth the diameter of the ball in thick-
ness, the smallest balls having relatively the thickest coat. This valve rests on a
horizontal seating.
The division plate grating, and valve casing, and seat, are preferably formed
in separate parts instead of being cast with the chamber so as to be easily removed
to allow of the whole internal part of the chamber, being easily cleaned and
examined.
To prevent the ball escaping with the water from the valve chamber, a grating or
single broad flat bar in the centre, is placed at G leaving plenty of egress for the

page_text: water on each side, but by openings too small for the ball to go through or stick in
them.
Having now particularly described and ascertained the nature of the said invention,
and in what manner the same is to be performed, I declare that what I claim is :-
1st. In a gulley trap or other like trap for preventing the return of gas, sewage
matter, or the like, the combination of a diaphragm B, and a valve seat beyond the
diaphragm carrying a valve, either the valve or the seat having an elastic surface,
substantially as described.
2nd. In a trap for preventing the return of gas, sewage matter, or the like, the
combination with the gulley of a horizontal or nearly horizontal valve seat and
elastic ball valve, substantially as and for the purposes specified.
3rd. The trap for preventing the return of gases, sewage matter, and the like,
constructed and arranged as a whole, substantially as described and illustrated.
Dated this 10th day of Annil 1987