AN IMPROVED METHOD OF AND APPARATUS FOR EXTRACTING SEWAGE GAS FROM DRAINS
Year: 1880

page_text: LETTERS PATENT to Benjamin Morton, of Salford, in the County of Lancaster,
for an Invention of "AN IMPROVED METHOD OF AND APPARATUS FOR
EXTRACTING SEWAGE GAS FROM DRAINS."
PROVISIONAL SPECIFICATION left by the said Benjamin Morton at the
Office of the Commissioners of Patents on the 10th July 1880.
BENJAMIN MORTON, of Salford, in the County of Lancaster. "AN IMPROVED
METHOD OF AND APPARATUS FOR EXTRACTING SEWAGE GAS FROM DRAINS."
My Invention consists in ventilating drains by rarefying the air in a chamber
connected by a flue or pipe to the drain, and provided with a flue or pipe to carry
off the foul air or gas; in this chamber I place a coil of pipes, which 1 heat by
exhaust steam or otherwise. The rarefaction of the air in the chamber, caused
by the heat, draws the foul air or gas from the drain and fresh air into the drain.
In soil pipes, and other pipes of the ordinary construction leading into drains, there
is often an escape of gas notwithstanding the syphon traps; I apply one, two, or
more branch pipes; if two, one on each side of the syphon trap, the outer branch
pipe being connected to the main drain and to the ascending flue or pipe which
leads to the ventilating chamber or extractor, and the inner branch pipe connected
to the soil pipe near the syphon trap and to the ascending flue. The capacity of
the ascending flue or pipe being equal to or greater than the branch pipes, branch
pipes may be connected to any portion of the drain likely to become stagnant.
The branch pipes connected to the soil pipes draw fresh air down the soil pipes,
and I apply other pipes opening into the air to admit fresh air to other parts of
the drain.
•

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Benjamin Morton in the Great Seal Patent Office on the 8th
January 1881.
BENJAMIN MORTON, of Salford, in the County of Lancaster. "AN IMPROVED
METHOD OF AND APPARATUS FOR EXTRACTING SEWAGE GAS FROM DRAINS."
My Invention consists in ventilating drains by rarefying the air in a chamber
_ _ connected by a flue or pipe to the drain, and provided with a flue or pipe to carry
off the foul air or gas in this chamber-I place a coil of pipes, which I heat by
exhaust steam or otherwise. The rarefaction of air in the chamber, caused by tlie
heat, draws the foul air or gas from the drain and fresh air into the drain. In soil
pipes, and other pipes of the ordinary construction leading into drains, there is often
an escape of gas notwithstanding the syphon traps. I apply one, two, or more
branch pipes; if two, one on each side of the syphon trap, the outer branch pipe
being connected to the main drain and to the ascending flue or pipe which leads to
the ventilating chamber or extractor, and the inner branch pipe connected to the 1
soil pipe near the syphon trap and to the ascending flue. The capacity of the
ascending flue or pipe being equal to or greater than the branch pipes, branch pipes
may be connected to any portion of the drain likely to become stagnant. The
-branch pipes connected to the soil pipes draw fresh air down the soil pipes, and I
apply other pipes opening into the air to admit fresh air-to-other parts of the drain. 2
And in order that my Invention may be fully understood and readily carried into
effect, I will describe the accompanying Sheet of Drawings, reference being had to
the figures and letters marked thereon.
Fig. 1 is an elevation of a building and drain and pipes, and
Fig. 2 shews in section part of a building and drain and pipes to which my s
Invention is applied; a is the soil pipe which conveys the sewage from the building
into the drain, and b is a branch pipe connecting the drain with the extracting
pipe; c is a syphon trap, and d is another branch pipe connecting the drain with
the extracting pipo; e is a chamber containing a coil heated by steam (or otherwise)
at the foot of the extracting pipo f; g is an opening used for cleaning the trap c;
h is a brick "eye" for inspecting and cleaning the drain, and which also acts as a
fresh air inlet.
The mode of operation is as follows:-When steam is admitted into the coil in
the chamber e, the heat rarefies the air and causes a strong up current in the
pipe f, thus drawing the foul air and gas from the drain and down the soil pipe a; 3
fresh air is drawn into the drain through the inlet h and through the soil pipe 4,
and thus the danger consequent upon bad plumbing, open joints, imperfect pipes,
and traps that have syphoned themselves is entirely obviated, and any aperture or
imperfection that communicates from the interior of the building to the soil pipe
only serves to ventilato the building instead of admitting sewage, gas, or foul air 4
into the building as is usually the case. Any number of inlets or pipes to admit
fresh air to the drain may be used, and the extractor or ventilating pipo may bo
applied to any drain, the extractor being either connected to or apart from a
building. Instead of a coil heated by steam, hot air or a gas jet or other means
may be used for rarefying the air in the chamber e, or the chamber might bo
dispensed with and the heat applied near the bottom of the pipo f, but I prefer to
use the chamber.
Having stated the nature of my Invention, and described the manner of
performing the same, I wish it to be understood that I do not limit myself to the

page_text: details given, as they may be varied or modified; but what I claim is, ventilating
drains by the extracting pipe f and heated chamber e, to rarefy the air, substantially
as shown and described.
In witness whereof, I, the said Benjamin Morton, have hereunto set my hand
and seal, this Seventh day of January, One thousand eight hundred and
eighty one.
BENJAMIN MORTON. (LS)