IMPROVEMENTS IN APPARATUS APPLICABLE TO WATER- CLOSETS AND DRAINS
Year: 1872

page_text: LETTERS PATENT to Alexander McNeil Greig, of No. 107, Adrian
Terrace, West Brompton, in the County of Middlesex, Plumber,
for the Invention of "IMPROVEMENTS IN APPARATUS APPLICABLE TO WATER-
CLOSETS AND DRAINS"
Sealed the 4th April 1873, and dated the 19th October 1872.
PROVISIONAL SPECIFICATION left by the said Alexander McNiel Greig
at the Office of the Commissioners of Patents, with his Petition, on
the 19th October 1872.
I, ALEXANDER MCNEIL GREIG, of No. 107, Adrian Terrace, West
Brompton, in the County of Middlesex, Plumber, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN APPARATUS
APPLICABLE TO WATERCLOSETS AND DRAINS," to be as follows:-
My Invention has for its object economy of construction or manu-
facture, and the prevention of the return of soil, and the escape of sewer
gas or smells into the soil pipe or the upper part of the trap, and con-
sists in making traps for waterclosets and drains of carthenware, and of
such a section as to be capable of holding and passing a large quantity
of water, and also in forming at the bottom of the soil pipe a partition
extending nearly to the bottom of the trap, and dipping well into the

page_text: body of water contained therein, and providing at the back of such
partition and in the upper part of the trap a ventilating pipe which is
intended to be connected with a separate pipe to be carried to the top of
the building to which the apparatus is applied. By this construction of
apparatus of carthenware with a glazed internal surface, and by means
of the arrangement of the parts as above stated, the trap will be
thoroughly cleansed as required, stagnant water prevented from remain-
ing therein, and foul air or sewer gas carried upwards and discharged at
the top of the building, thereby preventing its passing into the inlet pipes
and escaping into the building. The form of the said partition will
also prevent rats from gaining an entrance into house drains from the
sewer.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Alexander M'Neil Greig in the Great Seal Patent
Office on the 19th April 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALEXANDER
MONELL GREIG, of No. 107, Adrian Terrace, West Brompton, in the
County of Middlesex, Plumber, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of October, in the
year of our Lord One thousand eight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Alexander M°Neil Grieg, Her special
licence that I, the said Alexander M'Neil Greig, my executors, adminis-
trators, and assigns, or such others as I, the said Alexander McNeil
Greig, my executors, administrators, and assigns, should at any time
agrco with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
usc, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN APPARATUS APPLICABLE TO WATERCLOSETS AND DRAINS," upon
the condition (amongst others) that I, the said Alexander McNeil Greig,
my executors or administrators, by an instrument in writing under my,
or their, or one of their hands and scals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great

page_text: Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Alexander MoNeil Greig, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement, reference being had to the
Drawings hereunto annexed, and to the letters and figures marked
thereon (that is to say)
:―
My Invention has for its object economy of construction or manu-
facture, and the prevention of the return of soil, and the escape of sewer
gas or smells into the soil pipe or the upper part of the trap, and con-
sists in making traps for waterclosets and drains of earthenware, and of
such a section as to be capable of holding and passing a large quantity
of water, and also in forming at the bottom of the soil pipe, which
extends nearly to the bottom of the trap, a partition or bridge dipping
well into the body of water contained therein, and providing at the back
of such partition or bridge, and in the upper part of the trap, a ventilating
pipe or pipes, which is or are intended to be connected with a separate
pipe to be carried to the top of the building to which the apparatus is
applied. By this construction of apparatus of earthenware with a glazed
internal surface, and by means of the arrangement of the parts as above
stated, the trap will be thoroughly cleansed as required, stagnant water
prevented from remaining therein, and foul air or sewer gas carried
upwards and discharged at the top of the building, thereby preventing
its passing into the inlet pipes and escaping into the building. The form
of the said partition or bridge will also prevent rats from gaining an
entrance into house drains from the sewer.
Having thus stated the nature of the said Invention I will proceed to
describe more particularly in what manner the same is to be performed,
by the aid of the accompanying Drawings, in which are represented a
ventilating trap for waterclosets and drains, and also an area and sink

page_text: 1
A is the inlet for the soil pipe or other pipes connected therewith;
B is the inlet from baths, scullery sinks, and areas; C is the outlet to be
connected with the main outlet; D, D, are the holes before and behind
the bridge for ventilation, to which holes or outlets the ventilating pipe
or pipes is or are to be connected; E is the manhole for inspection and
cleansing, as required; F is the partition or bridge.
It will be seen on reference to Fig. 4 that soil and other matter
entering at the two inlets A and B will be readily conveyed through the
water in the trap to the outlet C; also that sewer gas or smells arising
from the stagnant water in the trap will escape through the outlets D, D,
and be discharged at the outlet or outlets at the top of the building.
Having thus described the nature of the said Invention and in what
manner the same is to be performed, I hereby declare that what I claim
as of my Invention is,-
First. The formation and construction of traps with two inlets, as at
A and B, combined with a partition or bridge dipping well into the body
of water contained in the trap, whereby soil and other matter entering
through the said inlets will be readily discharged through the water at
the outlet C, as described.
Secondly. The construction of such traps with ventilating outlets and
man-hole for inspection and cleansing, as described.
And, lastly. The general form and construction of the area and sink
trap represented and described.
In witness whereof, I, the said Alexander M'Neil Greig, have
hereunto set my hand and seal, the Nineteenth day of April,
in the year of our Lord One thousand eight hundred and seventy-
three.
Witness,
WILLIAM SPENCE,
ALEXANDER MCNEIL GREIG. (L.S.)
8, Quality Court,
Chancery Lane.