Improvements in Sewer Traps for Waste Pipes and the like.
Year: 1897

page_text: Date of Application, 27th Apr., 1897
Complete Specification Left, 26th Jan., 1898-Accepted, 9th Apr., 1898
PROVISIONAL SPECIFICATION.
Improvements in Sewer Traps for Waste Pipes and the like.
I, WILLIAM GODFREY, of 4, West 114th Street, in the City and State of New
York, United States of America, Architect and Builder, do hereby declare the
nature of this invention to be as follows:-
The object of my invention is to provide a practical form of sewer valve suitable
for waste pipes and drainage pipes generally which shall be positive in action,
durable in use and cheap in construction considering the advantages secured.
Furthermore, my object is to so form the valve that the pivoted valve proper
may be readily removed for cleaning purposes, and shall so normally operate as to
secure in effect the action of a trap or seal by holding the water in the inlet side
of the valve to a sufficient height to seal the pipe.
My invention is adapted to pipes leading from sinks, bath, tubs wash tubs, and
lavoratory apparatus generally, as well as for the drainage pipes directly leading
to the sewers.
In carrying out my invention I form the valve structure of two castings
constituting an inlet section and outlet section suitably united and provided for
attachment with supply discharge pipes. The inlet section adjacent to the outlet
section is provided with a valve seat of non-oxidizable or other metal such as brass
which is preferably secured in position by having the metal of the inlet section
cast upon it. The valve seat proper is formed obliquely and receives a gravity
actuated pivoted or flap valve of considerable weight and preferably formed of an
alloy such as type metal which shall be more ductile than the seat. The upper
part of the outlet or discharge section is formed with a hand hole normally closed
by a cover, the hole being sufficiently large to permit the insertion and removal
of the automatic valve.
My invention comprehends further the pivoting of the valve to a removable
support of frame, detachably secured in the outlet chamber between the discharge
and inlet sections and adapted to be removed together with the valve through the
hand hole.
By my improved construction the joint between the valve seat and the inlet
section is enclosed by the joint between the inlet and discharge sections, so that
only one joint is necessary, and if any leak should occur at any time the water
would run into the discharge side and not upon the floor. Furthermore by making
the valve seat part of non-oxidizable metal it may be made thin at its seating edge
which will prevent in a great measure deleterious substances adhering and inter-
fering with the tight sealing of the valve. Furthermore by properly weighting
the valve and shaping the inlet chamber the valve may hold enough water in the
inlet chamber to completely seal the valve seat, thus forming in effect a water seal.
In addition to this the discharge chamber may be so shaped or formed as to have
a U-shape to constitute a second water trap, so as to make the passage of gas

page_text: impossible. The vent pipe may also be connected with the discharge side of the
sewer trap.
Dated this 27th day of April 1807
Improvements in Sewer Traps for Waste Pipes and the like.
I, WILLIAM GODFREY, of 4, West 114th Street, in the City and State of New
York, United States of America, Architect and Builder, 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 a practical form of sewer valve suitable
for waste pipes and drainage pipes generally which shall be positive in action,
durable in use and cheap in construction considering the advantages secured.
Furthermore, my object is to so form the valve that the pivoted valve proper
may be readily removed for cleaning purposes, and shall so normally operate as to
secure in effect the action of a trap or seal by holding the water in the inlet side
of the valve to a sufficient height to seal the pipe.
My invention is adapted to pipes leading from sinks, bath tubs, wash tubs, and
lavoratory apparatus generally, as well as for the drainage pipes directly leading
to the sewers.
In carrying out my invention I form the valve structure of two castings
constituting an inlet section and outlet section suitably united and provided for
attachment with supply discharge pipes. The inlet section adjacent to the outlet
section is provided with a valve seat of non-oxidizable or other metal such as brass
which is preferably secured in position by having the metal of the inlet section
cast upon it. The valve seat proper is formed obliquely and receives a gravity
actuated, pivoted, or flap valve of considerable weight and preferably formed of an
alloy such as type metal which shall be more ductile than the seat. The upper
part of the outlet or discharge section is formed with a hand hole normally closed
by a cover, the hole being sufficiently large to permit the insertion and removal
of the automatic valve.
My invention comprehends further the pivoting of the valve to a removable
support or frame detachably secured in the outlet chamber between the discharge
and inlet sections and adapted to be removed together with the valve through the
hand hole.
My invention also comprehends details of construction, all of which will be
better understood by reference to the accompanying drawings, in which:
Fig. is a sectional elevation on line y-y of Fig. 2 showing the interior construc-
tion of my improved valve;
Fig. 2 is a vertical section of my improved valve on line - of Fig. 1;
Fig. 3 is a plan view of my improved valve;
Fig. 4 is a perspective view of the valve and its support removed;
Fig. 5 is a cross section similar to Fig. 2 showing a modified manner of support-
ing the valve;
Fig. 6 is a section similar to Fig. 1 showing a modified form of supporting the
valve;
Fig. 7 is a sectional elevation corresponding to Fig. 1 but showing the form of
valve adapted to drainage pipes leading to sewers; and

page_text: Fig. 8 is a sectional view of a modified form of my valve.
A is the inlet section, and D is the outlet or discharge section, and these two
parts are respectively provided with flanges E' F which are secured together by
screws or bolts f to make a liquid tight joint. The inlet section is formed with a
curvature to give considerable fall to the water so as to readily flush itself clear.
Its end adjacent to the outlet section is provided with a valve seat B formed of
non-oxidizable metal such as brass or bronze, and made with a shoulder about
which the iron of the section A is cast. In this manner the valve seat B is cheaply
secured to the inlet section and is so placed about the core in casting that the
surface on the inside of the parts A and B are flush and form no obstruction to the
passage of the water or material. The valve seat is directed obliquely downward
and has an oblique seating edge upon which the valve H seats itself by gravity.
The thickness of the seating edge C is preferably small so as to offer very little
chance for the lodging of obstructions, the danger from this fact being lessened
proportionally to the reduction in the surface of the seating edge. The outlet or
discharge chamber 1) has its lower portion D' arranged considerably below the
lower part of the valve seat so as to allow the proper fall and clearance to the.
materials discharged under the valve to secure the proper relief. d is the discharge
end of the outlet section. The upper part of the section D is formed with a hand
hole E which is bounded on the three sides by the walls of the section D and upon
the other side by the surface of the section A. This hand hole is normally closed
by a cover or cape which is properly screwed down to make a tight joint.
H is the pivoted or flap valve and is preferably formed of a material or alloy
softer than the valve seat B, a metal such as type metal being excellently adapted
to the purpose. The valve H is loosely pivoted to the lugs i of a supporting
plate I by means of a rod or journal J. The plate I is inserted between the side
walls of the outlet section D and interposed between the face of the section A and
lugs and the end of the flange K. Vertically this plate is limited in its move-
ment by coming in contact with the valve seat B. By simply removing the plate
or cover e, the valve H and its supporting plate I may be quickly removed and the
interior of the apparatus cleaned, thus making the valve as an entirety exception-
ally desirable for practical use. The valve H should be of sufficient weight that
under the action of gravity it will properly seat itself upon the valve seat to make
a gas tight joint, and to secure this end without excessive expense it is desirable
that the hinge shall be loose so that the valve may adapt itself to the seat indepen-
dently of its connection with the plate I. The connection with the plate I limits
the downward tendency of the valve but is not designed in any wise to interfere
with or disturb its proper adjustment upon its seat. By making the weight of the
valve H sufficient a body of water may be normally supported back of the valve
and in the inlet section adapted to hermetically seal the valve as shown in Fig. 1.
The accumulation of this water will come from the dripping in the pipe after the
main discharge has taken place and the valve H reseated itself. In this manner
the sewer valve in effect performs the function of a trap or water seal as well.
Owing to the manner of constructing my valve and its seat this result can readily
be secured, whereas with the ordinary iron seats it is practically impossible to
make a tight joint for any considerable length of time.
In the construction shown in Fig. 1 the sewer valve is especially designed for
connection with wash basins, sinks, bath tubs, etc. and to facilitate the application
of the valve, I provide it with a vertical inlet pipe L and a discharge pipe M
respectively secured to the inlet and discharge sections A and D by screw
couplings and m. The lead pipes in the house are secured to the pipes ₺ and M
by wiped or other joints.
When my improved valve is used in connection with the drainage pipes which
are more or less horizontal and connected directly with the sewer, I prefer to form
the inlet and discharge sections as indicated in Fig. 7, which construction has all
the advantages of that shown in Fig. 1, but specially adapted to a slightly oblique
pipe approaching more nearly the horizontal.

page_text: The valve H may be detachably connected in other manners than that shown
in Figs. 1, 2, 3 and 4, for instance lugs I may be provided in any suitable manner
and a spring pivot rod J' employed to detachably connect the valve H to said lugs
as shown in Fig. 5, or in lieu thereof, the cap e may be provided with downwardly
extending lugs which fit about the pivot rod J to hold the valve H in proper position
as indicated in Fig. 6. In all of these cases, however, the necessary loose play
should be provided to enable the valve to properly seat itself, and also to permit the
ready removal of the valve from the discharge section whenever desired for cleaning
purposes or repairs.
In Fig. 8 I have shown the discharge section formed with a water seal or trap S
between the valve H and discharge d, which may have a vent orifice T at the
upper part.
While I prefer the construction shown I do not limit myself to the exact details
as they may be modified in various ways without departing from the principles
of my invention.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
First: The sewer-trap or drain valve constructed substantially as herein
described and shown.
Second: A sewer-trap or drain-valve in which a non-oxidizable valve seat is
secured to the inlet section in such a way that its joint is enclosed within the
joint uniting the inlet and discharge sections.
Third: A tubular valve seat of non-oxidizable metal secured to the inlet section
and surrounded by the discharge section with an intermediate clearance space
between it and the walls of the discharge section.
Fourth. In a sewer trap or drain valve of the character described, the valve
loosely pivoted to a removable support detachably connected with the discharge
chamber.
Dated this 26th day of January 1896.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.