Improvements in Ventilating and Disinfecting Sewers, House Drains, and the like.
Year: 1887

page_text: Date of Application, 7th Dec., 1887
Complete Left, 29th Dec., 1887
Complete Accepted, 3rd Feb., 1888
PROVISIONAL SPECIFICATION.
Improvements in Ventilating and Disinfecting Sewers, House
Drains, and the like.
I, JOHN SMITH of 1 Dixon Villas, 11 Birchanger Road, South Norwood in the
County of Surrey, Builder do hereby declare the nature of this invention to be as
follows:-
My invention has reference to improvements in ventilation whereby the vitiated
gases from Sewers, House Drains &ct. are carried off to any suitable height.
In carrying out my invention in the case of Sewers (substantially the same
principle referring also to House or other Drains) I arrange an inlet pure air'chamber,
wider at the top than at the bottom.
The said air chamber terminates at the surface of the roadway, foot path or other
level with a locked grating, the bottom of the air chamber being connected by means
of pipe, earthenware or otherwise, provided with suitable elbows or bends, to a middle
junction, about the level of the sewer pipe.
This junction can be effected in a concrete or brick block or the pipes themselves
can be made to form the junction.
The air chamber pipe is fixed slightly above the sewer pipe, the upper portion of
the latter being open to allow of the escape of the foul and unhealthy gases. On the
opposite side, and on the same level to the pure air pipe and forming the third pipo
of the junction; is fixed the outlet foul air pipe, which is also by means of suitable
elbows or bends, carried to the surface of the road way and there connected to a shaft
preferably about 25 ft. high.
Intermediate, between the pure air chamber, and the outlet foul air shaft; is built
in brick or concrete a chamber containing a cistern provided with a continuous
supply of water-Above this cistern is fixed a box containing a deoderizing com-
position, which percolates into the cistern, and mixing with the water provides a
ready disinfectant.

page_text: The escape of the vitiated gases is thereby assisted, a supply of the disinfectant
liquid being introduced into the air chamber through a pipe from the bottom of the
said cistern.
The pure air chamber pipe and the outlet foul air pipe being approximately on the
same level, the sewer pipe being immediately underneath the two, as the unhealthy
gases rise, they are carried by the large volume of pure air up the outlet pipe & thence
out of the shaft above the house tops.
The form of the junction herein mentioned may be varied, as also the method of
fixing, to suit the special requirements of any particular case, and for the purposes of
inspection I provide a suitable cover.
I do not bind myself to any material in the manufacture of the various parts of my
invention.
Dated this 7th love of Donna 1007

page_text: COMPLETE SPECIFICATION.
Improvements in Ventilating and Disinfecting Sewers, House
Drains, and the like.
I, JOHN SMITH of 1 Dixon Villas, 11 Birchanger Road, South Norwood, in tho
County of Surrey Builder 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 has reference to improvements in ventilation, whereby the vitiated
gases from Sewers, House Drains &ct. are carried off to any suitable height.
Figure 1 is a general section of a road or other way shewing my improved method
of ventilation. In this Figure A is the pure air chamber, B its connecting pipe to
the junction M, C is the outlet foul air pipe, leading up to the surface, and there
terminating in the shaft K, carried to any height, preferably above the House Tops.
D is the Sewer pipe, open at the top to allow of the escape of the foul gas into the
junction.
E is a brick or concrete chamber, fixed intermediate between the air chamber A,
and the shaft K; it contains a water cistern F, the supply of water being constant
and controlled. His a box, containing a deoderizing composition.
It may be found convenient from certain causes, to temporarily check, or stop the
supply of air, from the air chamber A, and for this purpose, I have shewn a full way
screw down valve V, the connecting rod R leading to the surface, so that the valve
may be actuated when necessary.
Figures 2. 3. 4. 5 and 6 are simply varied forms of the junction M shewn in
figure 1. Certain of these forms, I have designed, so that if found convenient or
desirable, the whole of the junction may be manufactured in earthenware. I have
also provided certain of them with covers, for the purposes of inspection, and in each
and all of them the valve V may be fixed if necessary.
In figure 6 the position of the pipes are slightly altered and a greater distance is
shewn between thein.
The junction M is separated into two ordinary junctions and the outlet pipe is of a
larger diameter than the inlet. A concrete block may be provided for the outlet pipe,
and the pipe may lead direct to the surface in a perpendicular line to the drain
pipe, or otherwise.
Where existing manholes are in operation for the purposes of ventilation, I either
provide them with air-tight covers, (effecting the escape of foul gas as herein
described by my improved method), or I utilize the said manhole (altering it if
necessary) as the pure air chamber A.
The action of my improved principle is as follows (reference being made to
figures 1 to 5)—
The unhealthy gas rising from the sewer pipe D into the junction M is immediately

page_text: acted on, by the current of pure air from B (supplied through the chamber A)
and carried away up the foul air pipe C, the shaft K, into mid air above the
houses.
During the Summer months, or at such times as may be necessary to assist the
current of pure air, the necessary composition or fluid in box E is allowed to percolate,
or pass through the box, and mix with the water in the cistern, in such proportions as
will provide a good and constant disinfectant.
The fluid disinfectant thus obtained passes through a pipe P, into the air chamber A,
thus preventing the rising of any gas, tends to destroy it, and materially assists its
escape through the pipe C. I do not bind myself to the forms of the junction M
herein described and shewn on the drawings, nor to the method of fixing the said
pipes, nor to the material to be used in the manufacture of the various parts of
invention.
my
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is-
1st. The combination and general arrangement forming my improved method of
ventilation, substantially as, and for the purposes herein described, and as shewn on
the accompanying drawings.
2nd. In the ventilation of sewers and the like, the chamber E, containing cistern F,
disinfectant box H, and the necessary connections substantially as and for the purposes
described.
Dated this 28th day of December.
JOHN P. O'DONNELL,
Cambridge Road, New Malden, Surrey,
Agent for said Applicant.