Combined Gulley Trap, Air Inlet, and Inspection Shaft.
Year: 1895

page_text: Date of Application, 22nd Jan., 1895--Accepted, 23rd Mar., 1895
COMPLETE SPECIFICATION.
Combined Gulley Trap, Air Inlet, and Inspection Shaft.
I, THOMAS HARRIS, of 31, Sidney Road, Bootle, in the County of Lancaster,
Surveyor, 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 and consists of a gulley trap of any suitable size or
shape for carrying off surface water and "wastes." having an opening or inlet of
any size or shape formed above the trap or midfeather through which fresh air is
admitted into drains, or sewers or into appurtenances in connection therewith for
the purpose of ventilating them also having an inspection shaft of any size or
shape formed at any angle vertically and horizontally as to give any desired lead
for connecting to a drain or sewer or to an appurtenance in connection therewith
and by removing the cover or covers as hereinafter described, access can be
obtained to such drain, or sewer or appurtenance in connection therewith for the
purposes of examining, flushing or clearing any obstruction that may have
accumulated therein.
The air inlet and inspection shaft hereinbefore named form parts of and are
combined with the gulley trap which is made in one piece of earthenware, stone-
ware or metal or any other impervious material.
The accompanying drawing shows the nature of this invention, the action of
which is as follows:-
Water enters through cover A, and fills up to level B, the solids settling at the
bottom and the liquid passing away through opening C, into inspection shaft D,
which is connected either direct to a drain or sewer or to an appurtenance in
connection therewith or to pipes leading thereto. Fresh air is also admitted
through cover A, and passes through opening E, into the inspection shaft D, thence
into drain or sewer or an appurtenance in connection therewith; by removing
cover A, access can be obtained to the inspection shaft D for inspecting, flushing
or cleansing purposes.
The diaphragm forming the trap F, is raised a suitable distance above water
level B, so as to prevent any floating substance from entering the inspection
shaft D. When the apparatus is connected direct to an intercepting or syphon
trap or to pipes leading thereto either vertically or obliquely, the abrupt fall of the
water from the apparatus into the intercepting or syphon trap will secure any
floating substance being driven under the diaphragm of such intercepting or
syphon trap.
In Fig. 1, the apparatus is shewn to be connected to a length of pipes fixed
vertically to an intercepting trap in dotted lines and it may be turned in any
direction desired.
That part of cover A, over the inspection shaft D, is made solid so that dirt,
coal, sticks umbrella wires and the like cannot fall through and by removing
cover A, access can be obtained to the shaft D, and intercepting trap also to the
pipes connecting the former to the latter for the purposes of inspecting, flushing or
clearing any obstruction that may have accumulated therein. The drains or
sewers may be flushed also by removing cover A.

page_text: Shaft D may also be formed at such an angle that it can be connected to an
intercepting trap having an oblique inlet, and effect the same results as if it were
connected to one having a vertical inlet, as that shewn in this figure.
In Fig. 2, the apparatus is shewn in dotted lines to be connected to a length of
pipes laid horizontally leading to and connected with a length of vertical pipes
that are connected to an intercepting trap and it may be turned in any direction
desired and fixed at any distance from the vertical pipes.
、
The cover is made in two pieces A and A', the former is fixed on the apparatus
and is left open for the free admission of water and' fresh air and the latter is fixed
in the collar of the uppermost vertical pipe & is made solid so as to prevent debris
from falling through:
The uppermost vertical pipe may be fixed either above or below or at the same
level as the surface of the ground or paving immediately adjoining and may be
fitted, in lieu of the cover A¹ as shewn in this figure, with an ordinary stone or
earthenware stopper jointed in clay and covered: over with tiles, bricks, flags
or whatever the ground immediately adjoining is paved with or the stopper may be
covered over with a cast iron hinged box.
The cover Ais removed for examining, flushing or clearing any obstruction
that may have accumulated in the vertical pipes or intercepting trap and the
horizontal pipes connecting the apparatus to the vertical pipes may be examined,
flushed & cleaned with a cane, or rods or other suitable tools by removing
cover A. The drains or sewers or appurtenances in. connection therewith may be
flushed also by removing either cover A, or cover A!.
The shaft D may be formed at any angle vertically and horizontally so that it
can be connected to a length of pipes laid obliquely leading to and connected with
a length of vertical pipes that are connected to an intercepting trap and effect the
same results as if it were connected to a length of pipes laid. horizontally leading
to & connected with a length of vertical pipes..
The apparatus as shewn in this figure (Fig. 2) is also- suitable for connecting to
pipes laid horizontally or obliquely as to the terminus of a drain or sewer (when
it is more convenient for the provision of an air inlet to be fixed at such a point)
When so fixed the drains or sewers may be examined, flushed and cleaned by
removing cover A.
The
The apparatus shewn in Fig. 2, may also be connected to a length of pipes
entering a drain obliquely in the direction of the flow of such drain by forming
shaft D, at such an angle vertically and horizontally as to give the desired direct
lead and by removing cover A access can be obtained to shaft. D, or to the pipes
connecting such, to drain or to the point where the pipes join the drain for the
purposes of examining, flushing or clearing any obstruction that may have
accumulated. The drain may be flushed also by removing cover A.
apparatus shewn in Fig. 2 may also be made for street purposes and for admitting
fresh air into public sewers by making solid that portion that is shown in section
to be rebated for the reception of cover A, and by constructing shaft D, at such
an angle vertically and horizontally as to give it the required lead for it to enter
the sewer direct and obliquely in the direction of the How. It may be covered
with a grating or cover of any size & pattern by removing which access can be
obtained to shaft D, or to the pipes connecting it to the sewer or to the point at
which such pipes join the sewer for the purposes of examining, flushing or clearing
any obstruction that may have accumulated.
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 :-
1. The combination of a gulley trap, an air inlet, and an inspection shaft, as
berein described..
2. The adaptation of the apparatus, for effecting the inspection; flushing, and

page_text: 5
cleaning of drains or sewers or appurtenances in connection therewith as described
herein.
3. The method described herein of providing for the admission of fresh air into
drains or sewers.
Dated this 19th day of January 1895.
THOMAS HARRIS.