Improved Apparatus for Disinfecting Drains and Sewers and the like.
Year: 1892

page_text: Date of Application, 2nd June, 1892
Complete Specification Left, 4th Aug., 1892-Accepted, 22nd Oct., 1892
PROVISIONAL SPECIFICATION.
Improved Apparatus for Disinfecting Drains and Sewers and the
like.
I JOSEPH ARNOLD Surveyor and Draftsman, 40 Clowance Street, Devonport,
in Devonshire, do hereby declare the nature of this invention to be as follows:-
My invention relates to combined deodorising, and disinfecting apparatus,
whereby sewers, cesspits, and drains, are relieved of gaseous pressure, due to a
sudden influx of water, and the gases in escaping are caused to pass through, or
come in contact, in a more or less divided state, with a disinfecting, and deodorising
liquid, and whereby such liquid is continuously supplied to the sewer, cesspit, or
drain itself. The apparatus consists essentially of two vessels placed one above,
and partly within the other, with a ventilating opening formed therein, and
connected with the sewer, cesspit, or drain, the ventilating opening having an
adjustable dome-shaped cover, the said dome dipping just to, or below, the surface
of a disinfecting liquid contained in a tank formed around the ventilating opening, so
as to be only just sealed thereby. The dome has a flange parallel with the liquid
surface, and perforated with small holes which become filled with the disinfecting
liquid, either by immersion, or by capillarity, and the gases, which in escaping,
must pass either through the holes, or entirely beneath the flange, are brought in a
more or less divided state, into prolonged, and intimate contact with the liquid in
tank around ventilating opening. The tank is kept constantly supplied with a
chemical, kept in a state of solution, and is caused to overflow in regulated quantity,
discharging through the ventilating opening into the sewer, cesspit, or drain,
thereby maintaining the liquid level in said tank constant.
The overflow formed in the ventilating opening leads out from the inside of the
dome to prevent the direct escape of sewer gases without passing through the
liquid, and it terminates in a rim formed at the lower end of ventilating opening, to
which a regulated quantity of another liquid is supplied from a lower tank, the two
liquids.being such, that by their chemical combination, gases will be generated,
having a powerful disinfecting, and deodorising action on the sewer gases as they
ascend through the ventilating opening, and before reaching the dome, the excess
of liquid, flows into the cesspit, sewer, or drain, and helps to keep it sweet.
Dated this 28th day of May 1892.
JOSEPH ARNOLD.
COMPLETE SPECIFICATION.
Improved Apparatus for Disinfecting Drains and Sewers and the
like.
I JOSEPH ARNOLD of 40 Clowance Street Devonport, in Devonshire,
Draughtsman 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 combined deodorizing and disinfecting apparatus, whereby
sewers, cess-pits, and drains are relieved of gaseous pressure due to a sudden influx
of water and the gases in escaping are caused to pass through, or to come in contact,
in a more or less divided state with a disinfecting and deodorizing liquid, and
whereby such liquid is continuously supplied to the sewer, cess-pit, or drain itself.
Reference is to be had to the accompanying drawing forming part of this
Specification which shews a vertical section of the apparatus. The apparatus

page_text: consists essentially of two vessels placed one above, and partly within the other,
with a ventilating opening V. having an adjustable dome-shaped cover D. D. the
said dome dipping just to, or below the surface of a disinfecting fluid, contained in
a tank A. A. formed around the ventilating opening V. so as to be only just sealed
thereby.
The dome D. D. has a flange F. F. parallel with the liquid surface, and
perforated with small holes H. H. which become filled with the disinfecting liquid,
either by immersion or by capillarity, and the gases, which in escaping must pass
either through the holes H. H. or entirely beneath the flange F. F. are brought in
a more or less divided state into prolonged and intimate contact with the liquid in
tank A. A. around the ventilating opening V.
The tank A. A. is kept constantly supplied with a chemical kept in a state of
solution and is caused to overflow, Ŏ in regulated quantity discharging through the
ventilating opening V. into the sewer, cess-pit, or drain thereby maintaining the
liquid level in said tank A. A. constant.
The overflow O formed in the ventilating opening V. leads out from the inside
of the dome D. D. to prevent the direct escape of sewer gases without passing
through the liquid, and it terminates in a rim R. formed at the lower end of the
ventilating opening V. to which a regulated quantity of another liquid is supplied
from a lower tank B. B. the two liquids being such, that by their chemical
combination, gases will be generated, having a powerful, disinfecting, and deodorizing
action on the sewer gases as they ascend through the ventilating opening V. and
before reaching the dome D. D. the excess of liquid flows into the cess-pit, sewer,
or drain, and helps to keep it sweet.
The liquid supplied from tank A. A. by the overflow O. is preferably a solution
of permanganate of soda, whilst that supplied from tank B. B. through a drip-tap T.
may be dilute sulphuric acid, which flows down an aperture into the rim R. at lower
end of ventilating opening V.
Having now particularly described, and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
The herein described apparatus to be applied to sewers, cess-pits, or drains,
consisting of two vessels, or tanks, having a vertical ventilating opening formed in
their centres, and fitting one above, and partly within the other, with an adjustable
dome at upper end, having a perforated flange lightly sealed by immersion in a
disinfecting liquid, and having an overflow in a rim formed inwards at the lower
end of ventilating opening, and a second liquid supplied through an aperture to the
said rim, as and for the purpose specified.
Dated this 30th day of July 1892
JOSEPH ARNOLD.