Improvements in or relating to Gulleys, Traps, and the like.
Year: 1898

page_text: I, WALTER DURRANT, Contractor, of Orwell Works, Felixstowe, in the County
of Suffolk, do hereby declare the nature of this invention to be as follows:-
This invention relates to gulleys, traps and the like and includes a movable
receptacle, shoot, trap etc.
In carrying out the invention I form the gulley of any suitable design, size and
material, say for example, glazed earthenware with a main receptacle and an over-
flow branch trap etc.: the upper portion may be open for the reception of water
or other materials and may be provided with a loose or fixed grating, the upper
frame of which may be preferably of metal or have an internal flange to carry
a suitably shaped shoot or funnel, the lower end of which extends below the
water level inside the receptacle to be presently described. For existing gulleys a
separate flange to carry the shoot or funnel is provided, retained between the top
of the gulley and the underside of the grating-frame.
The movable receptacle may be an iron vessel perforated at the bottom and
provided with a loose protecting cover plate; a suitable handle is attached or
pivotted to the receptacle.
At the upper portion the receptacle is perforated preferably above the water
line so that liquid passing through would join the main body of liquid in the
gulley but outside the receptacle. The greater part of the floating matter would
be retained inside the shoot, while heavy matters would sink to the bottom of the
receptacle, the water and liquid escaping by the trap in the usual way.
It is intended that the receptacle, shoot etc. shall be readily accessible so as to
be removed at pleasure and the grating may therefore be either quite loose or
secured by some readily detachable fastening.
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BOULT & WADE,
Agents for the Applicant.
Improvements in or relating to Gulleys, Traps, and the like.
I, WALTER DURRANT, of Orwell Works, Felixstowe, in the County of Suffolk,
Contractor, 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 gulleys, traps and the like.
In carrying out the invention Í form the gulley body or main chamber of any

page_text: suitable design, size and material, say for example, glazed earthenware with a
main receptacle and an overflow branch, trapped by a water-seal; the upper
portion may be open for the reception of water or other materials and may be
provided with a loose or fixed grating and an internal flange to carry a suitably
shaped shoot or funnel, the lower end of which extends below the water lever
inside the receptacle to be presently described. For existing gulleys a separate
flange to carry the shoot or funnel is provided, retained between the top of the
gulley mouth-piece or top slab and the underside of the grating-frame.
The movable receptacle may be an iron vessel perforated at the bottom and
provided with a loose protecting cover plate constituting a non-return upwardly-
opening valve; a suitable handle is attached or pivotted to the receptacle.
The accompanying drawing represents in vertical central section a drainage
gulley according to this invention in place in the gutter of a roadway R alongside
a kerb K, the gulley chamber or body A being provided with a water-seal con-
duit A between the upper or inlet end A2 of the chamber and the delivery
branch A³. A removable bucket B is situated beneath the inlet, and is perforated
as at B near its upper end to afford overflow openings; there are other openings Ba
in the bottom of the bucket above which a non-return disc valve B3 is free to rise
and fall on a stud B+ fixed in the bucket bottom. B6 is a handle pivotted at its
ends B7 to the sides of the bucket and serving to facilitate its adjustment into and
removal from the position in which it is now shown. A strong frame C rests on
the top slab or mouth-piece D placed immediately above the gulley chamber,
supporting a grid or grating C¹ of the usual or other convenient type, and having
an internal flange C2. A removable funnel E provided with handles E¹ rests upon
this flange, below the grid, and is of such dimensions as to receive everything
that falls through the openings in and around the grid C¹ this funnel extends
downward so that its open lower end reaches a lower level y in the bucket B
than the level at which overflow can occur from the latter.
Where it is desired to apply the improved bucket B and funnel E to existing
gulleys, the frame C of which may not possess the internal flange C2, support for
the removable funnel E may readily be obtained, at a slightly lower level than that
at which it is at present illustrated, by the insertion of an annular supporting
ring (indicated in chain lines), between the underside of the frame C and the
top of the slab 1).
The non-return valve B in the lower end of the bucket lifts automatically
when the bucket is thrust down into place after removal, and allows the water
surrounding the bucket to pass into it readily so that no difficulty is experienced
in putting it back into place, the valve closing automatically as soon as the
downward movement of the bucket ceases; this valve may however be dispensed
with if the bucket be heavy enough to sink.
Further the perforated construction of bucket B, although perferred, as con-
stituting a strainer to keep back from the drain any floating material which may
perchance get past the lower edge of the funnel E, is not absolutely essential
and may be abandoned, in which case the water will overflow from the bucket into
the space around it, over its upper edge, which could be brought down say to the
level or thereabouts.
In use, the whole of the liquid which falls through the grid C₁ and such solids
as may accompany it pass into the hopper E and descend towards the outlet end
thereof the heavier solid portions collect at the bottom of the bucket Bas
indicated at G, and can be removed as soon as a sufficient quantity is accumulated
in the bucket the lighter portions, that is to say those which would float in the
liquid, collect as indicated at H, being intercepted by and held in suspense in
the water within the lower end of the funnel between and y. The comparatively
clear water from which the solid constituents have thus been separated out at G
and H passes up through the annular space between the outer wall of the
funnel E and the interior of the bucket B, and so out into the body A of the
gulley chamber and to the delivery branch A' by way of the water-seal conduit A'.

page_text: The drains are thus kept free from materials which would tend to clog them and
the detritus at G and H is easily removable at intervals by taking out the bucket B
and the funnel E after the grid C has been lifted off.
Gulleys constructed on this principle can be cleaned out in much less time
and with less trouble than is expended in the cleaning of gulleys of the ordinary
type.
The dimensions of the water-seal conduit are such in relation to the displacement
of the bucket B, that although upon removal of the latter the level of the liquid in
the gulley will fall, it will nevertheless maintain a sufficient seal in the conduit A'.
It will be seen that the surface of liquid exposed to the atmosphere in the
gulley is small and is practically only of an area equal to that of the cross
sectional area of the lower portion of the funnel E, so that evaporation is
produced.
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
1. In a drainage gulley or the like the combination of a removable bucket and
an inlet funnel extending to a lower level than that of the bucket overflow, with
or without a non-return valve, substantially as and for the purpose described.
2. In a drainage gulley or the like the combination of a removable bucket the
upper part of which serves as a strainer, and a funnel extending to a lower level
than that of the bucket overflow for the purpose described.
3. In a drainage gulley or the like of the kind described the combination with
the removable funnel of a supporting ring adapted for retention between parts
such as C and D for the purpose specified.
4. In a drainage gulley or the like the combination with a bucket, of a non-
return valve substantially as described.
5. The improved gulley substantially as and for the purpose described or
illustrated in the accompanying drawing.
Dated this 31st day of May 1899.
WALTER
DURRANT.
Boult & Wade,
Agents for the Applicant.