Improved Means for Ventilating Sewers and the like, and for Disinfecting or Deodorizing the Gases therefrom.
Year: 1892

page_text: Date of Application, 1st Feb., 1892
Complete Specification Left, 1st Nov., 1892-Accepted, 31st Dec., 1892
PROVISIONAL SPECIFICATION.
Improved Means for Ventilating Sewers and the like, and for
Disinfecting or Deodorizing the Gases therefrom.
I, HORATIO STEWART, of 167 New Bond Street, in the County of London,
Librarian, do hereby declare the nature of this invention to be as follows:-
My invention relates to improved means for ventilating sewers and the like and
for disinfecting or deodorizing the gases therefrom.
I accomplish these results as follows, that is to say :-I connect with the sewer
or the like at suitable intervals throughout its length and preferably at the higher
parts thereof, ventilating shafts having one or more annular burners or rings of
gas-jets arranged within the same near the top or at any other convenient part
thereof. I find it advantageous to employ two or more of such burners arranged
concentrically but at different levels, one burner being placed a short distance above
the other.
By these means the vitiated air and foul gases are drawn from the sewer through
the said ventilating-shaft by the heat produced by the flames from the said burners.
Moreover the foul gases are disinfected or deodorized by the action of the said
flames before they are permitted to escape into the atmosphere.
I arrange the outlet apertures of the ventilating-shaft in such a manner as to
avoid any liability to accidental extinction of the gas-flames by the wind. For
example combine, with the said apertures, suitable shields for this purpose; or I
provide the ventilating-shaft with a cowl of any convenient description.
The said ventilating-shaft should be suitably ornamented externally, and may,
if desired, be made to serve also as a lamp-post or be used for any other additional
purpose for which it may be adapted.
It is evident that as the vitiated air and foul gases are drawn out of the
sewer as above described, fresh air will enter the sewer through the usual road-
gratings.
Dated this 30th day of January 1802
HORATIO STEWART.
D. Young & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improved Means for Ventilating Sewers and the like, and for
Disinfecting or Deodorizing the Gases therefrom.
I, HORATIO STEWART, of 167 New Bond Street, in the County of London,
Librarian, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
My invention relates to improved means for ventilating sewers and the like
and for disinfecting or deodorizing the gases therefrom.
I accomplish these results as follows, that is to say :-I connect with the
sewer, or the like, at suitable intervals throughout its length, and preferably at
the higher parts thereof, ventilating-shafts or columns having one or more annular
burners or rings of gas-jets arranged within the same near the top or at any
other convenient part thereof in such a manner that an upward draught will be
1 Paina 2/1

page_text: created in the ventilating-shaft or column sufficiently strong to effectually_draw
all the foul gases from the sewer or the like, and these gases, being compelled to
pass through the space surrounded by the annular burners, will be subjected to a
high degree of heat and will thus be disinfected or deodorized and all germ life
therein destroyed before they are allowed to escape into the atmosphere.
I find it advantageous to employ two or more of such burners arranged at
different levels within the ventilating-shaft or column, one burner being by
preference, placed a short distance above the other.
In the accompanying drawing I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 is a sectional elevation showing one of my ventilating-shafts or columns
connected with a sewer.
Figure 2 is a vertical central section of a part of the said shaft or column, drawn
to an enlarged scale.
I prefer to use for my ventilating shaft an ornamental hollow column A such
as is shown in Figure 1, which column may be placed, if desired, upon a refuge in a
roadway or street. The interior of the shaft or column A communicates by means
of a pipe B with the sewer C to be ventilated.
In the interior of the shaft or column A and preferably near the top thereof, I
arrange annular burners or rings consisting of gas-pipes a enclosed in suitable
casings or pipes b for the supply of air, which enters the said casings or pipes &
through a pipe or passage c and an inlet d from the exterior of the shaft or
column A. The said annular burners or rings are supplied with gas by means of a
pipe e.
The ventilating-shaft or column is provided with an internal flange A¹ upon a
which the said annular burners or rings are supported. Or the said burners or
rings may be otherwise held in the desired position within the shaft or column.
I prefer to use burners constructed as shown in Figure 2 so as to produce jets of
flame by the burning of gas and atmospheric air mixed in suitable proportions to
ensure a very high temperature near the top of the column, through which the
vitiated air and foul gases from the sewer must pass.
By these means the vitiated air and foul gases are as above stated, drawn from
the sewer C through the pipe B and into and through the said ventilating-shaft A
by the heat produced by the flames from the said burners. Moreover the foul gases
are disinfected or deodorized and all the germs therein destroyed by the action of
the said flames, before such gases are permitted to escape into the atmosphere.
By using two annular burners as shown, I provide a highly heated chamber
through which the whole of the gases from the sewer must pass before escaping
into the atmosphere.
I arrange the outlet aperture or apertures at the top of the ventilating-shaft in
such a manner as to avoid any liability to accidental extinction of the gas flames
by the wind. If necessary, I combine, with the said aperture or apertures, one or
more suitable shields, such as a piece of wire-gauze, for this purpose. I sometimes
provide the ventilating-shaft with a cover of any convenient description. In the
arrangement shown in the drawing, I find it advantageous to make the capital of
the column of open-work and to close it at the top.
The said ventilating-shaft may, if desired, be made to serve also as a lamp-post
as shown, or for any other additional purpose for which it may be adapted.
It is evident that, as the vitiated air and foul gases are drawn out of the sewer
as above described, fresh air may be allowed to enter the sewer through the usual
road-gratings or otherwise; I prefer, however, to close the said road-gratings and
allow the air to enter the sewer around the ordinary man-holes and the like.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is;
The improved means for ventilating sewers and the like and disinfecting or

page_text: deodorizing the gases therefrom and destroying the germs in such gases, substan-
tially as herein before described.
Dated this First day of November 1892.
H. STEWART.
D. Young & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.