Improvements in Street Gulleys.
Year: 1894

page_text: Date of Application, 17th May, 1894-Accepted, 23rd June, 1894
Improvements in Street Gulleys.
JOSEPH WILLOUGHBY Junior 14 Ermington Terrace Plymouth Engineer and
Ironfounder 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 has for its object improvements in the construction of gulley traps
for streets, gutters, and other places, through which apparatus water is carried into
sewers or pits.
It is well known that owing to the accumulation of mud, stones, and other matter
in the gulley traps in general use, they have to be cleaned out from time to time so
as to permit of their proper action.
In this cleaning it often happens that the outlet from the gulley into the sewer is
unsealed; the removal of the mud, stones, and other matter causes the water in the
gulley to sink below the level of the outlet, in which case gas from the sewer passes
out into the street and a nuisance is created.
In times of drought also the level of the water in the gulley is lowered by
evaporation, and then the sealing is destroyed and the gases from the sewer passing
through the gulley and out of the grating become a source of danger to passers by
and residents near.
Now, by my invention the cleaning out of the gulley of the accumulations therein
is accomplished without in any way being followed by the defects hereinbefore
described; the water sealing between the gulley and the sewer is not interfered
with. Further the water sealing being not so exposed, the evaporation in times of
drought is reduced to a minimum.
By referring to the accompanying drawings Figures I & III-it will be seen
that the discharge opening A is placed at such a height in the gulley from the
bottom of the gulley B as to allow space in the gulley for the accumulation of mud,
stones, and other matter, which will be carried into it by the flood water from
time to time.
At the discharge opening A, (preferably to the exterior of the gulley,) I form a
sealing chamber C, which may be formed either solid with the gulley as in
Figures I & III, or separate from the gulley, being fastened to the gulley by bolts
and nuts as in Figures II & IV, or by other simple and well understood methods.
It will thus be seen that the body of the gulley may be cleared of the
accumulations therein without in any way interfering with the water-sealing in the
chamber C.
The space D in the sealing chamber C may be reached by lifting the grating E
in order to clear it should any obstruction overflow into it if at any time the gulley
is neglected and allowed to completely fill up with mud, stones, or any other
matter.
The space F in the sealing chamber C may be reached through an aperture G
for the purpose of clearing it of any obstruction should such occur. Through this
aperture G, the outlet H from the sealing chamber C to the sewer may also be
reached.
To this aperture G. is affixed a cover.
This apparatus may be made of any desired shape, and may be constructed of
any suitable material, and the sealing chamber may be constructed within the
gulley itself if so desired.
The gulley may be formed with more than one opening to the sealing chamber,
or may be constructed with one or more sealing chambers, and the sealing chambers

page_text: may have one or more openings into the sewer. The outlet from the sealing
chamber to the sewer may be in any required position, and the sealing chamber
may be protected with gratings at either one or both of the openings at A. and H.
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-
.
The formation of a sealing chamber in or attached to a street gulley whereby
the sealing, between the sewer and.gulley is independent of the water level in the
body of the gulley itself as hereinbefore described or any mere: modification
:thereof.
Dated this 16th day of May 1894