IMPROVED METHODS AND APPARATUS FOR NEUTRALIZING AND DEODORIZING THE POISONOUS AND NOXIOUS GASES EMITTED FROM SEWERS AND DRAINS, AND ALSO THE SEWAGE MATTERS CONTAINED THEREIN.
Year: 1875

page_text: LETTERS PATENT to David Gill, of the Town of Weston-super-Mare,
in the County of Somerset, for the Invention of “IMPROVED METHODS
AND APPARATUS FOR NEUTRALIZING AND DEODORIZING THE POISONOUS AND
NOXIOUS GASES EMITTED FROM SEWERS AND DRAINS, AND ALSO THE SEWAGE
MATTERS CONTAINED THEREIN.
"
Scaled the 16th October 1875, and dated the 23rd July 1875.
COMPLETE SPECIFICATION filed by the said David Gill at the Office
of the Commissioners of Patents, with his Petition and Declaration,
on the 23rd July 1875, pursuant to the 9th Section of the Patent
Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, DAVID
GILL, of the Town of Weston-super-Mare, in the County of Somerset,
send greeting.
WHEREAS I am in possession of an Invention for "IMPROVED METHODS
AND APPARATUS FOR NEUTRALIZING AND DEODORIZING THE POISONOUS AND NOXIOUS
GASES EMITTED FROM SEWERS AND DRAINS, AND ALSO THE SEWAGE MATTERS
CONTAINED THEREIN," and have petitioned Her Majesty to grant unto me,
my executors, administrators, and assigns, Her Royal Letters Patent
for the same, and have made solemn Declaration that I am the true
and first Inventor thereof.

page_text: NOW KNOW YE, that I, the said David Gill, do hereby declare that
the following Complete Specification, under my hand and seal, fully
describes and ascertains the nature of the said Invention, and in what
manner the same is to be performed, in and by the following statement,
reference being had to the annexed Drawings and to the figures and
letters marked thereon, that is to say
i
My said Invention consists in certain methods of neutralizing the
poisonous, noxious, and offensive qualities of sewer or drain gas, and also
of neutralizing the injurious qualities of sewage matters, and of
deodorizing the same, and in the construction and arrangement of
apparatus for effecting such purposes, the whole constituting in fact- a
system of fumigation. For those purposes any chemical compound
capable of readily evolving chlorine gas may be employed, but other
compounds belonging to the class of substances known as "disinfectants,"
and capable of being vaporized or of being converted into a gaseous form
'may be employed, as will be well understood by persons conversant withi
such or analogous operations.
In order that my said Invention may be clearly understood, I will now
refer to the annexed Drawings of the apparatus cmbraced thereby.
In these Drawings Figure 1 is a sectional view of the apparatus.
A is a vessel formed of fire-clay or any other suitable material, and is
provided for the purpose of containing the requisito compound or
compounds for generating or evolving the desired gases or vapours for
fumigation; B is a heating chamber which is also made of fire-clay
or any other suitable material, as will be well understood, C is an inlet
pipe for the admission of air to drive the gases, fumes, or vapours from
the generating vessel forward into the drain; D is an exit pipe from the
generating vessel for conveying the gases, fumes, or vapours into the
drain, E is the drain; F is a pipe or up shaft which is placed at
the most suitable position to the drain, the same being carried upwards
to any suitable height. The object of the said shaft is to create a
current or draught to draw the fumes down into and through the drain;
a, a, is a deep groove running round the top of the vessel A, the same
being larger than the flange of the cover of the vessel; 6 is the cover
with a flange round it which sinks into the groove when it is put on.
The groove is filled with water or otherwise suitably arranged for
preventing the escape of fumes. c and d are inlet and exit holes, e the
'

page_text: material or materials for producing the gases, fumes, or vapours;
ƒ,ƒ,ƒ,ƒ, are inlet and exit holes for air to the heating chamber B; g 1s
the lamp, gas jets, or other source of heat for heating the vessel A; his
the door (shown at Figure 2), for communicating with the lamp or gas
or other source of heat; is a cap hinged to the top of the up shaft with
a wire or chain and ring to raise the cap for the purpose of creating a
current or draught as before mentioned, or to let down the same in order
to retain the gases, fumes, or vapours in the drain for any desired length
of time, and for actuating the cap so as to regulate the flow of such
gases, fumes, or vapours at pleasure.
By the application of my said Invention to sewers and drains, and to
the sewage matters contamed therein, the last-mentioned matters, and
also the gases or vapours evolved therefrom are neutralized and rendered
innoxious and also deodorized, and it is manifest that the same is
applicable by means of modifications in the apparatus and in the
chemical agents employed, which may be adopted without departing
from the principles thereof to manufactories in which it is desired to
get rid of impurities or to introduce fresh air, and also to the treatment
of liquids other than those of the character of sewage.
Having thus described and ascertained the nature of my said Invention,
I would observe in conclusion that I do not claim the several parts of
the apparatus herein-before described separately and apart from each
other, but what I consider novel and original, and therefore claim as
constituting my said Invention arc, the methods of and the general
combination and arrangement of apparatus for neutralizing and
deodorizing the poisonous and noxious gases emitted from sewers and
drains, and also the sewage contained therein, substantially as herein-
before set forth and described.
In witness whereof, I, the said David Gill, have hereunto set my
hand and seal, this Twentieth day of July, One thousand eight