IMPROVEMENTS IN GULLEYS AND FAT TRAPS
Year: 1879

page_text: LETTERS PATENT to Henry Owen, of Sussex Place, South Kensington, in the
County of Middlesex, Sanitary Engineer, for the Invention of " IMPROVEMENTS
IN GULLEYS AND FAT TRAPS."
aled the 29th July 1879, and dated the 31st January 1879.
PROVISIONAL SPECIFICATION left by the said Henry Owen at the Office of
the Commissioners of Patents on the 31st January 1879.
HENRY OWEN, of Sussex Place, South Kensington, in the County of Middlesex,
Sanitary Engineer. "IMPROVEMENTS IN GULLEYS AND FAT TRAPS."
This Invention relates to the construction of a combined gulley and fat trap for
forming a receptacle for the inlet of surface and rain water previous to its passing
to the drain, and also forming a receptacle for the discharge from the waste pipes,
from scullery sinks, and the like, for collecting the deposit which such water usually
contains, so as to prevent such deposit from entering the drain, and further serving
as a receiver for the discharge from the waste pipes of cisterns, lavatories, baths,
and other discharge pipes, the object of the improvements being to allow of easy
access for cleaning, and to prevent the escape of gas from the fat trap and sewer.
In carrying out my Invention I employ by preference a square box forming a
receiver or fat trap, and made of stoneware or other suitable material, and provided
at one side with a syphon, to which syphon I adapt an outlet pipe for the discharge
of noxious gases.
Above the water line I form a suitable number of inlet openings
in the said receiver for connecting it with the waste from the scullery or otherwise.
The upper edge of the said receiver is formed with a rim for receiving a curved
flange on an iron tray which drops into the receiver, the bottom of such tray
extending below the water line in the receiver, traps the inlet for gulley water; the
centre of the bottom of this tray is open, and the inner edge thereof being curved,
forms a receptacle for water for the purpose hereinafter described. The said tray
has a rim or flange round its upper. edge, and between this rim or flange and the
curved flange herein before described, the said tray is provided with a suitable
number of openings for the insertion of waste pipes. I provide a second tray with
a recessed bottom, the bottom edges or flanges of such recess dipping into the
herein before described curved receptacle of the first described tray, thus forming a
second trap.

page_text: The inner tray is formed with a curved flange round its edge for fitting over the
rim of the first tray, and is bevilled internally to form a dish stone; below the bevil
there is a rebate forming the seat-or-bearing-for a grating.
The inner tray below the grating forms a receiver for the rain or surface water,
and the overflow therefrom into the herein before described lower receiver or fat trap
is effected through suitable openings.-
By this construction it will be understood that to clear out the-fat-trap-it is.
simply necessary to remove therefrom the two hereinbefore-described-trays,-and-the-
trap will be exposed, at the same time any sewer gas is prevented from passing
out of the drain during the cleaning operation by the herein before described
syphon.
It is to be understood that when a gulley without a fat trap is required, I dispense
with the outer or larger hereinbefore described tray, and fit the inner tray with its
grating over the edge of the receiver, in which case the openings for the scullery
waste pipes would be utilized for the waste from other sources.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Owen in the Great Seal Patent Office on the 31st July
1879.
HENRY OWEN, of Sussex Place, South Kensington, in the County of Middlesex,
Sanitary Engineer. "IMPROVEMENTS IN GULLEYS AND FAT TRAPS."
This Invention relates to the construction of a combined gulley and fat trap for
forming a receptacle for the inlet of surface and rain water previous to its passing
to the drain, and also forming a receptacle for the discharge from the waste pipes
from scullery sinks and the like, for collecting the deposit which such water usually
contains, so as to prevent such deposit from entering the drain, and further serving
as a receiver for the discharge from the waste pipes of cisterns, lavatories, baths,
and other discharge pipes, the object of the improvements being to allow of easy
access for cleaning, and to prevent the escape of gas from the fat trap and sewer.
In carrying out my Invention I employ by preference a square box forming a
receiver or fat trap, and made of stoneware or other suitable material, and provided
at one side with a syphon, to which syphon I adapt an outlet pipe for the discharge
of noxious gases.
Above the water line I form a suitable number of inlet openings
in the said receiver for connecting it. with the waste from the scullery or
otherwise.
The said receiver is formed with a rim and groove near its upper edge for receiving
a curved flange on an iron tray which drops into the receiver, the bottom of such
tray extending below the water line in the receiver traps the inlet for gulley water;
the centre of the bottom of this tray is open, and the inner edge thereof being
curved; forms a receptacle for water for the purpose hereinafter described. The said
receiver has a rim or flange round its upper edge, and between this rim or flange
and the curved flange hereinbefore described, the said receiver is provided with a
suitable number of openings for the insertion of waste pipes. I provide a second
tray with a recessed bottom, the bottom edges or flanges of such recess dipping into
the hereinbefore described curved receptacle of the first described tray, thus forming
a second trap..
The inner tray is formed with a curved flange round its edge for fitting over the
rim of the receiver, and is bevilled internally to form a dish stone; below the bevil
there is a rebate forming the seat or bearing for a grating.
The inner tray below the grating forms a receiver for the rain or surface water,
and the overflow therefrom into the herein before described lower receiver or fat trap
is effected through suitable openings.
But to make my Invention better understood I will proceed to describe the same
by reference to the accompanying Drawing, which shews a sectional elevation of a
combined gulley and fat trap constructed according to my Invention.
a is the receiver or fat trap; b, the syphon; 6', outlet pipe for the discharge of
noxious gases; c shews one of the inlet openings in the receiver for connecting it
with the waste from the scullery or otherwise; & is the rim near the upper edge of
the receiver for receiving the curved flange e of the tray f, the bottom g of such
tray extending below the water line as shewn; h is the open part in the centre of
the bottom of the tray; i, curved edges forming a receptacle for the water trap;
jis the rim or flange round the upper edge of the receiver; k is the second tray
with the recessed bottom, the bottom edges or flanges 1 of the recess dipping into
the water receptacle i; m is the curved flange round the edge of the tray k for
fitting over the rim j of the receiver a; n is the rebate forming the seat or bearing
for the grating o; p are holes in the inner tray below the grating for the overflow
of the water from the inner tray; q is a curved screen projecting above the water
line, for the purpose of preventing fatty or other floating matter from passing into
the syphon; r is one of the openings for the insertion of waste pipes.
By this construction it will be understood that to clear out the fat trap a it is

page_text: simply necessary to remove therefrom the two hereinbefore described trays k and f
and the trap will be exposed; at the same time any sewer gas is prevented from
passing out of the drain during the cleaning, operation by the herein before described
syphon b.
It is to be understood that when a gulley without a fat trap is required I dispense
with the tray-and-fit-the inner tray-k with its grating over the edge of the receiver,
in-which-case-the-openings-for-the-scullery waste pipes would be utilized for the
waste from other sources.-
- In-some-cases the upper part of the receiver may form part of the tray f.
Having thus described my Invention, and the best means with which I am
acquainted for carrying the same into effect, I wish it to be understood that I do
not confine myself to the precise details herein laid down and shewn in the accom-
panying Drawing, as the same may be varied without departing from the peculiar
character of the Invention, but what I do claim is,―
The general arrangement and construction of the combined gulley and fat trap,
as hereinbefore described and represented in the accompanying Drawing, or any
mere modification thereof.
In witness whereof, I, the said Henry Owen, have hereto set my hand and
seal, this Thirteenth day of July, in the year of our Lord One thousand
eight hundred and seventy nine.
Witness,
G. F. REDFERN,
4, South Street, Finsbury,
London.
HENRY OWEN. (L.S.)