An Improved Intercepting Trap for Drains and Sewers.
Year: 1896

page_text: Date of Application, 19th June, 1896
Complete Specification Left, 19th Mar., 1897-Accepted, 19th June, 1897
PROVISIONAL SPECIFICATION.
An Improved Intercepting Trap for Drains and Sewers.
HENRY HILLYARD Sanitary Inspector, 12 Boxworth Grove Richmond Road
Islington London, N. do hereby declare the nature of this invention to be as
follows:-
The invention relates to the construction of intercepting traps which may be
fixed in connection with drains and sewers. The interceptor is made in stoneware,
earthenware, metal, composition, or any other suitable material, or by a com-
bination of such materials.
My intercepting trap is invented with the object of obtaining free access to
all parts of the trap so that any accumulation or deposit may be easily removed
therefrom. Also that the trap itself shall not prevent or hinder any obstruction
being removed from that portion of the drain between the trap and the sewer.
Also that a provision shall be made which may be used for the combined purpose
of respectively admitting surface drainage into the trap on that side of the water
seal the farther from the sewer, and for likewise ventilating the private drain.
Figs. 1. and 2. represented in the drawings are vertical sections setting out the
mode of construction. Fig. 3 is the plan. The drawings are explained as
follows:-
A. is a passage for liquid, the passage being so constructed as to form a bend
at B. which receives and retains a quantity of the liquid. C. is a wedge shaped
plug so designed and fitted as to be easily removed. An opening is provided
immediately over the bend of the trap, and extended downwards with tapered
grooves D. which are formed in each side of the interior of the trap for the
purpose of receiving the wedge shaped plug. The joint on that side nearer the
sewer which occurs between the plug C. and the opening over the bend B. com-
bined with the continuation of the grooves D. is made air tight, either, or a
combination of the materials above mentioned being employed. The plug C. and
the liquid contained in the bend B. form a water-seal and barrier against the
passage of fcul air. E. is a socket formed over the top of the trap. The socket
is provided for the purpose of receiving the end of a pipe or tube, which shall
be continued upwards so as to form the shaft F. which may terminate at or near
the ground level. G. is a rod or chain fixed to the plug C. The rod or chain
is continued upwards nearly to the top of the inside of the shaft for the purpose
of providing means whereby the plug may be withdrawn from the trap and
through the shaft when required. H. is an opening in the trap at the back of
the plug, (as shewn by dotted lines in the drawings,) for the combined purpose
of ventilating the private drain either from or into the shaft F, and also for
admitting surface drainage from the shaft into the trap or drain. The shaft F.
is ventilated by providing the top thereof with a suitable grating through which
fresh air may be admitted into the shaft, or an opening may be formed in the
side of the shaft to which a tube shall be connected and brought into communi-
cation with the external air. Thus fresh air may be admitted into the shaft, or
foul air extracted therefrom. An opening or openings may also be formed in.
the side of the shaft and pipes, or any other suitable means may be connected
thereto through which surface drainage can be admitted into the shaft.
D. 104
1000
HENKY HILLYARD.

page_text: HENRY HILLYARD Sanitary Inspector Gilbert Villas Cemetery Road Malvern
Worcestershire 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 invention relates to the construction of intersepting traps which may be
fixed in connection with drains and sewers. The interseptor is made in stoneware,
earthenware, metal, composition, or any other suitable material, or by a combination
of such materials.
My interscpting trap is invented with the object of obtaining free access to all
parts of the trap so that any accumulation or deposit may be easily removedi
therefrom, also that the trap itself shall not prevent or hinder any obstruction
being removed from that portion of the drain between the trap and the sewer, also
that a provision shall be made which may be used for the combined purpose of
respectively admitting surface drainage into the trap on that side of the water seal
the farther from the sewer and for likewise ventilating the private drain.
Figs. 1 and 2 represented in the drawings "left with the Provisional Specifi-
cation" are vertical sections setting out the mode of construction. Fig. 3 is the
plan. The drawings are explained as follows.
A. is a passage for liquid the passage being so constructed as to form a bend
at B which receives and retains a quantity of the liquid. C. is a wedge shaped.
plug so designed and fitted as to be easily removed. An opening is provided
immediately over the bend of the trap and extended downwards with tapered
grooves D which are formed in each side of the interior of the trap for the purpose
of receiving the wedge shaped plug.
The joint on that side of the plug C nearer the sewer which occurs between the
plug and the opening over the bend B combined with the continuation of the
grooves D is made air-tight, and for the purpose of making the said joint perfect
and air-tight either or a combination of the materials above mentioned is
employed.
The plug C and the liquid contained in the bend B form a water. seal and
barrier against the passage of foul air. E. is a socket formed over the top of the
trap. The socket is provided for the purpose of receiving the end of a pipe or
tube, which shall be continued upwards so as to form the shaft F. which may
terminate at or near the ground level. G is a rod or chain fixed to the plug C.
The rod or chain is continued upwards nearly to the top of the inside of the shaft
for the purpose of providing means whereby the plug may be withdrawn from the
trap and through the shaft when required. H. is an opening in the trap at the
back of the plug (as shewn by dotted lines) for the combined purpose of ventilating
the private drain either from or into the shaft F and also for admitting surface
drainage from the shaft into the trap or drain. The shaft F. is ventilated by
providing the top thereof with a suitable grating through which fresh air may be
admitted into the shaft, or an opening may be formed in the side of the shaft to
which a tube shall he connected and brought into communication with the external
air. Thus fresh air may be admitted into the shaft or foul air extracted therefrom.
An opening or openings may also be formed in the side of the shaft and pipes or
any other suitable means may be connected thereto, through which surface drainage
can be admitted into the shaft.

page_text: 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:
An intersepting trap for sewers and drains embracing provisions for the four-fold
purposes of interseptor access for removing obstructions from the trap and drain,
an inlet for receiving surface drainage, and ventilation for house drains.
An intersepting trap with an opening over the bend and extending downwards
with tapered grooves for the combined purpose of giving free access to all parts
of the trap, for ventilating the house drain, receiving surface drainage, and so
adapted that it can be partially closed in such a manner that the side of the
opening nearer the sewer is made fluid tight by a tapered plug which being
passed downwards through the opening and in the grooves forms the seal and
barrier against the passage of foul air. A socket provided over and around
the opening over the bend of the trap from which a shaft can be continued up
to the ground level. A rod or chain attached to the plug for the purpose of
withdrawing the plug from the opening and upwards through the shaft when
required.
Dated this 17th day of March 1907
HENRY HILLYARD.