IMPROVEMENTS IN OR RELATING TO STENCH TRAPS Or GULLIES
Year: 1885

page_text: I THOMAS GLOVER' of Blaby near Leicester Builder do hereby declare the nature
of my said invention for "IMPROVEMENTS IN OR RELATING TO STENCH TRAPS Or
GULLIES to be as follows:
B
"
1.
This invention is especially designed for the traps or gullies into which the
scullery sink discharges, as it offers peculiar facilities for removing the grease and
other matters which collect in it; I do not however confine myself to this particular
application of my invention.
I employ a frame of metal earthenware or the like, having a channel into which
a flange of the trap proper fits; this channel is always filled with water and forms
a seal
i
The frame is set in brickwork or otherwise securely connected with the "catch-
pit" above which it lies, and the trap itself which is preferably of the D pattern is
placed into the catchpit, its flange engaging with the channel of the frame as
already explained-The drain communicates with the catchpit in the usual manner,
but I prefer to place the trap to one side of the catchpit, or otherwise so construct
it that plenty of room is provided for the overflow from the trap and the exit from
the catchpit.
For cleaning or repairs, the trap proper is lifted out, when both trap and catch-
pit can be readily got at, and the trap is then returned to its place without
disturbing the setting or any fixtures..

page_text: Figure 3 shows the grid; and
Figure 4 is an external view of the trap.
I employ a frame A of metal earthenware or the like, having a channel A¹ into
which a flange B¹ of the trap B dips; this channel is always filled with water and
forms a seal.
The frame A is set in brickwork or otherwise securely connected with the catch-
pit C above which it lies, and the trap itself, which is preferably of the D pattern
is placed into the catchpit its flange engaging with the channel of the frame as
already explained. The catchpit C communicates with the drain D in the usual
manner, but I prefer to place the trap to one side of the catchpit, or otherwise so
construct it that plenty of room is provided for the overflow from the trap and the
exit from the catchpit.
For cleaning or repairs the trap B is lifted out when both trap and catchpit can
be readily got at and the trap is then returned to its place, without disturbing the
setting or any fixtures.
The trap B is preferably covered with an ordinary grid E placed loosely upon it
and which can be removed at pleasure. B' is the outflow from the trap into the
catchpit and F is the lip or guard which protects the opening B' and dips into the
water in the trap B (the surface of which is in a level with the lower edge of B')
and forms the seal in the usual manner.
The frame A might be dispensed with the channel A¹ being formed in the brick-
work or other material of which the catchpit is made, but the separate frame is
preferred unless the catchpit itself be made of iron or earthenware when the
channel would simply be formed in it.
Instead of the waterseal a joint with india rubber packing and set-screws or
equivalent might be employed, but I prefer the waterseal, my object being to be
able to remove the trap and replace it without having to break and remake a per-
manent joint such as cement or one that would involve much time and labour to
break and remake,

page_text: 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 stench trap or gully such as described the combination with the catch-
pit C of a trap such as B connected with C by a stench-tight joint, but adapted to
be readily removed and replaced without breaking a permanent joint substantially
as specified.
2. In a stench trap or gully such as described the combination with the catch-
pit C of a trap such as B having a flange B¹ dipping into a channel A' containing
water with which it forms a waterseal for the purpose of preventing the passage of
sewer gas while the trap is in place but permitting the ready withdrawal of the
trap without breaking a permanent joint substantially as specified.