Improvements in Apparatus for Preventing the Escape of Noxious Gases from Drains and Sewers, and for Ventilating the Atmo- sphere therein.
Year: 1887

page_text: Date of Application, 4th May, 1887
Complete Left, 3rd Feb., 1888
Complete Accepted, 23rd Mar., 1888
Improvements in Apparatus for Preventing the Escape of Noxious
Gases from Drains and Sewers, and for Ventilating the Atmo-
sphere therein.
We JOHN KIELL, Ironmonger, and WILLIAM GARLAND, Sanitary Inspector, both
of Barnstaple, in the County of Devon, do hereby declare the nature of this invention
to be as follows :-
This invention has for its object the arrangement and construction of an improved
apparatus for the prevention of the escape of sewer or other noxious gases or vapours
confined in drains, sewers, and other similar conduits, and the consequent vitiation or
pollution of the atmosphere; and also to provide improved means for effecting the
ventilation or purification of the atmosphere contained therein by the admission
thereinto of pure atmospheric air.
In carrying our invention into practical effect we construct a gully chamber with
its upper part open to the atmosphere and having a vertical diaphragm or partition
reaching nearly to its bottom, and thus forming a syphon trap. One side of the said
trap communicates with the atmosphere and the other side leads into a ventilating pipe
in connection with the drain, sewer, or other conduit. In the upper part of the gully
chamber and above the beforementioned trap is a hinged or flap valve bearing against
a suitable seating when closed, and opening inwards to the ventilating pipe, its axis of
suspension being at the highest part of its perimeter. It is arranged to close auto-
matically by its own weight and thus prevent any reflux or escape of sewer or other
noxious gases from the drain or sewer.
When however the pressure in the drain or sewer and ventilating pipe is less than
that of the atmosphere outside, the vertical hinged valve is automatically opened
inwards and permits the free admission of pure air to the drain or sewer pipes. By
these means the noxious gases are displaced and the atmosphere therein purified.
The hinged valve is preferably made of talc, glass or other incorrodible
material.
The syphon or gully chamber may be conveniently placed underneath the
roadway or footpath and covered by a grating or perforated plate as in ordinary
street gullies.
Dad L
TY
1007
WHEATLEY & MACKENZIE,
Agents.

page_text: We JOHN KIELL, Ironmonger, and WILLIAM GARLAND, Sanitary Inspector, both
of Barnstaple in the County of Devon, 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 :-
This invention has for its object the arrangement and construction of an improved
apparatus for the prevention of the escape of sewer gases or vapours confined in
drains séwers and other conduits, and the consequent vitiation or pollution of the
atmosphere contained therein by the admission thereinto of pure atmospheric air.
In carrying our invention into practical effect we construct a gully chamber with its
upper part open to the atmosphere and having a vertical diaphragın or partition
reaching, nearly to its bottom and thus forming a syphon trap, one side of the said
trap communicates with the atmosphere and the other side leads into a ventilating pipe
in connection with the drain, sewer, or other conduit. In the upper part of the gully
chamber and above the before mentioned trap is a hinged or flap valve bearing against
a suitable seating when closed and opening inwards to the ventilating pipe its axis of
suspension being at the highest part of its perimeter.
The accompanying drawing sufficiently illustrates how our invention may be
conveniently carried into effect which shews in longitudinal vertical section an apparatus
constructed according to our invention for preventing the escape of noxious gases from
drains and sewers and for ventilating the atmosphere therein.
A is the gully chamber open to the atmosphere at its upper part as shewn; B is the
vertical diaphragm or partition therein; C is the hinged or flap valve. This valve is
arranged to close automatically by its own weight and thus prevents any reflux or
escape of sewer or other noxious gases from the drain or sewer. When however the
pressure in the drain or sewer and ventilating pipe is less than that of the atmosphere
outside the vertical hinged valve C is automatically opened inwards and permits the
free admission of pure air to the drain or sewer pipes. By these means the noxious
gases are displaced and the atmosphere therein purified.
The hinged valve C is preferably made of talc, glass, or other incorrodable
material.
:
'
t
[
The syphon or gully chamber "A may be conveniently placed underneath the roadway.
or footpath and covered by a grating or perforated plate D as in ordinary street
gulleys.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is —
In apparatus for preventing the escape of noxious gases from drains and sewers
and for ventilating the atmosphere therein the diaphragm or partition B, with valve C
constructed and operating substantially as set forth.
JOHN KIELL.
WILLIAM GARLAND.