Improvements in Gulley or Stench Traps.
Year: 1897

page_text: Date of Application, 15th Sept., 1897
Complete Specification Left, 15th June, 1898-Accepted, 16th July, 1898
PROVISIONAL SPECIFICATION.
Improvements in Gulley or Stench Traps.
I, JOSEPH JOHNSON, Sanitary Engineer, residing at 32, Wellington Road,
Bilston, in the County of Stafford, do hereby declare the nature of this invention
to be as follows:
1
This invention relates to gulley or stench traps for general draining purposes,
and is an improvement or enlargement upon the construction of gulley trap set
forth in the Complete Specification of Letters Patent No. 10028, dated May 12th,
1896, and for which the said Letters Patent was granted to me.
The primary object of the invention is to simplify the construction of the
gulley trap and increase its effectiveness, but incidentally its production is
cheapened.
The chief elements in the gulley trap for which Letters Patent were granted,
as aforesaid, were a non-perforated mud receiver with overflowing sides and
central stand pipe, a perforated rotatable but non-removable cover plate with a
depending central tube ring-flange and winged extensions, and a central and a
boundary seal water chamber wherein the depending extensions of the cover
plate, as aforesaid, seat themselves; the whole of the parts combining to form a
gulley trap with two working ways.
Now, the improvements according to this invention refer distinctly to the
central water seal and the construction of the parts tending to form it, this seal
forming the main working branch of the gulley trap. In the old construction
the central water seal was a seal-water chamber surrounding the mouth of the
gulley outlet, into which depended the central tube of the cover plate, the said
chamber being cast in one piece with the said outlet. By this invention this
central seal-water chamber is either carried by the cover plate, and made to sur-
round the central depending tube thereof, or is dispensed with and in its stead
is used a U-shaped casing attached to the central pipe of the cover plate, which
hoods over the end thereof and forms a trap with the said pipe, its outlet being
uppermost and its construction like unto a duplicated siphon trap. This hood-
like casing is carried by or made in one piece with the depending pipe, and its
boundary fits within the enlarged mouth of the gulley's outlet similar to the
bowl in the Specification of Letters Patent before mentioned, leaving only
sufficient room for the water to get away, and not admitting of the passage of
sewer rats.
The siphon trap may be constructed with four or more ways, arms, or branches,
instead of two, each terminating in an independent outlet but leading from a
common interior, and their dispositions would be, in this case, preferably at
right angles to each other.
It is understood that with such a construction of gulley no ground S or P-trap
is necessary, as is the case with ordinary constructed gullies, but in cases where
such traps are fitted the siphon trap carried by the central depending pipe of the
cover plate will be dispensed with, and in its stead the central pipe downwardly

page_text: extended into the arm of the S or P-trap, in order to make a seal with the said
trap; the winged extensions on the said pipe being also extended the full length
of the pipe, so as to remove any accumulated matter within the trap.
With either of the constructions of trap described and the parts forming it a
mud receiver is not necessary, so long as the stand pipe of the same forms a part
of the cover plate. Wrought iron tubes can be used in the formation of the trap
outlets, either separated from each other or connected, and these will be cast into
the rotatable cover plate to surround its central depending pipe.
Improvements in Gulley or Stench Traps.
I, JOSEPH JOHNSON, Sanitary Engineer, residing at 32, Wellington Road,
Bilston, in the County of Stafford, 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 relates to gulley or stench traps for general draining purposes,
and is an improvement or an enlargement upon the construction of gulley trap
set forth in the Complete Specification of Letters Patent No. 10028 of 1896.
The primary object of this invention is to simplify the construction of the
gulley trap set forth in the Specification of the cited Patent, and increase its
efficiency to cope with storms and its effectiveness in always maintaining a proper
seal upon the sewers; but incidentally the production of the said gulley trap
is cheapened.
Referring to the construction of gulley trap in the Letters Patent hereinbefore
cited, the chief elements in the construction were a mud receiver with overflowing
sides and a central standpipe, a perforated rotatable cover plate having a depend-
ing central tube, a ring flange, and winged extensions, and a central and a
boundary seal water chamber wherein the depending extensions of the cover plate
seat themselves; the whole of the parts combining to form a gulley trap of two
working ways.
The improvements according to the present invention refer distinctly to the
central water seal of the gulley trap and to the construction of the parts tending
to form it, and these said improvements will be particularly described herein-
after by the aid of the annexed sheet of drawings. In the said sheet of drawings
Figs. 1, 4, 5, and 6 represent sectional views of the various forms of gulley traps
which constitute the improvements of the present invention, whilst Figs. 2, 3, 7
and 8 are parts of the said forms shown separately, i.e. Figs. 2 and 3 separate
parts of the arrangement Fig. 1, and Figs. 7 and 8 separate parts of the arrange-
ment Fig. 5.
In the Patent hereinbefore cited the central water seal was formed in part by
a seal water chamber centrally surrounding the mouth of the gulley trap outlet,
the said chamber being formed in one piece with the said outlet and the partially
closed bottom of the gulley trap body. According to this invention, especially
having regard to Figs. 1, 2 and 3, the central seal water chamber c is carried by
the rotatable cover plate 2, so as to surround the central depending tube c³
thereof, and is constructed in the form of a U-shaped trap preferably having
four working ways c; 5, 6 and 7, all in communication with the depending

page_text: tube and emptying into the outlet as formed within the bottom a5 of the body
part a of the gulley trap.
The said seal water chamber c may have only two or three working ways, but
its efficiency is such as to exceed the area of the depending tube, c³, and also to
help materially in the removal of any precipitated matter, which may congregate
in it, on a force of water flowing thereinto from the depending tube 3. In this
form of gulley trap the mud receiver d, the circular seal water chamber a, and
their cognate parts, are constructed and arranged in a similar manner in relation
to the rotatable cover plate as is fully described in the Specification of the
prior cited Patent.
The arrangement of gulley trap shown in Fig. 4 is for the most part similar
to that of Fig. 1, but the outlet thereto is constructed on the well known lines
of the P-trap, the nozzle e, of which projects from one of the sides of the trap
body. The mouth of the P-trap, which communicates with the gulley body, is
surrounded by the circular seal water chamber or gutter a² in the same manner
as is the outlet in Fig. 1, and this chamber or gutter, with the rotatable plate,
and the four-way U-shaped trap c, and the P-trap, constitute two main working
ways and three seals.
In the arrangement of the gulley trap Figs. 5, 7 and 8, the U-shaped trap c sur-
rounding the depending central tube 3 is dispensed with, and in its stead the said
depending tube is extended well into the bottom e³ of the P-trap e', and wings or
side extensions e, similar to those set forth in the Specification of the herein before
cited Patent, are formed thereon, so that any precipitated matter which may
settle in the bottom of the said P-trap may be disturbed by the rotation of the
rotatable cover plate c³.
In all the constructions of perforated cover plates hereinbefore described a mud
receiver is used which has a central standpipe communicating with the depend-
ing tube of the said cover plate, but in Fig. 6 a construction of cover plate is
shown adapted to be used without a mud receiver. This cover plate is some-
what of the form of that shown in Fig. 8, but it has standing up from its top
side, m, a standpipe m³, in line with and forming a part of the depending central
and extended tube c³.
By constructing the seal water-chamber of the central working way, viz. :-
the U-shaped four-way trap, in one piece with the removable cover plate, it will
be obvious how easily access can be obtained to the actual outlet, or the P-trap
within the bottom of the gulley traps body should it at any time become blocked
or stopped.
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. In combination in a gulley trap; a trap body or enclosure having a
P-shaped or similar trap formed within and leading from its bottom, and also
having a circular seal water chamber formed within the said bottom so as to sur-
round the said trap's mouth, a perforated cover plate having a depending central
tube surrounded by a U-shaped trap, or traps, which depends into and seats itself
within the mouth of the P-trap, and which also has a depending ring flange which
takes into the circular seal water chamber, and a mud receiver having a stand-
pipe communicating with the depending tube of the cover plate, substantially
as set forth.
Second. In combination in a gulley trap; a trap body or enclosure having a
P-shaped or similar trap formed within and leading from its bottom, and also
having a circular seal water chamber formed within the said body so as to sur-
round the P traps mouth, and a perforated cover plate having a depending central
tube either surrounded by a U-shaped trap or having depending wings which dip
into the body of the said P-trap, and also having a depending ring flange and a
central standpipe m³, substantially as set forth.

page_text: Third. In combination in a gulley trap as shown in Fig. 1; a trap body or
enclosure having a vertical outlet within and leading from its bottom, a perforated
cover plate having a depending central tube surrounded by a U-shaped trap,
and a mud receiver having a central standpipe communicating with the depend-
ing central tube of the cover plate, substantially as set forth.
Dated this 14th day of Tuno 1900
W. P. THOMPSON & Co.,
11, Burlington Chambers, New Street, Birmingham,
Also of Liverpool, London, and Manchester,
Patent Agents for the Applicant.