IMPROVEMENTS IN VENTILATING APPARATUS
Year: 1885

page_text: I EDGAR ALDOUS of No 2 Elmhurst, Upton Lane, Forest Gate in the county of
Essex, Ventilating Engineer do hereby declare the nature of my said invention
for "IMPROVEMENTS IN VENTILATING APPARATUS" to be as follows:-
This invention relates to the construction of an improved apparatus for ventilating,
rooms, buildings, ships and sewers and for other ventilating purposes.
The improved apparatus is constructed of a hood opening into the room or other
place to be ventilated; from this hood passes a tube which I term the exhaust tube
the other end of the exhaust tube passes outside the building where it is elbowed.
and provided at a short distance from its open end with an inverted cup or hollow
cone and enclosed within a shield having wind guards to prevent the entrance of
the external air. From any suitable part of the exhaust tube passes what I term
the atmospheric air tube: such tube which is for the purpose of creating an induced
current in the exhaust tube passes round the inner end of the exhaust tube and
along the side of the exhaust tube outside the building where its end is covered.
with wire gauze or by any other suitable perforated cover.
Within the exhaust tube between its inner end and where the atmospheric air tube
opens into it, I place a conical tube forming what I term a concentrating tube, such
concentrating tube being sealed at the back of the atmospheric air tube; a similar
concentrating tube is placed at any suitable point within the atmospheric air tube
but in an opposite direction to that in the exhaust tube.
...
C
HOOK
G. F. REDFERN,
4, South Street, Finsbury, London,.
Agent for the Applicant.

page_text: Improvements in Ventilating Apparatus.
I EDGAR ALDOUS of No 2 Elmhurst, Upton Lane, Forest Gate, in the county
of Essex, Ventilating Engineer 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 relates to the construction of an improved apparatus for ventilating
rooms, buildings, ships and sewers and for other ventilating purposes.
The improved apparatus is constructed of a hood opening into the room or other
place to be ventilated; from this hood passes a tube which I term the exhaust
tube; the other end of the exhaust tube passes outside the building where it is
elbowed and provided at a short distance from its open end with an inverted cup
or cap or hollow cone and enclosed within a shield or head having wind guards to
prevent the entrance of the external air. From any suitable part of the exhaust
tube passes what I term the atmospheric air tube; such tube which is for the
purpose of creating an induced current in the exhaust tube passes round the inner
end of the exhaust tube and along the side of the exhaust tube outside the building
where its end is covered with wire gauze or by any other suitable perforated
cover.
Within the exhaust tube between its inner end and where the atmospheric air
tube opens into it, I place a conical tube forming what I term a concentrating tube,
such concentrating tube being sealed at the back of the junction of the atmospheric
air tube with the exhaust tube; a similar concentrating tube is placed at any
suitable point within the atmospheric air tube but in an opposite direction to that
in the exhaust tube.
In order to enable my invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawing in which figure 1 is a partly
projected elevation and figure 2 a horizontal section of a ventilating apparatus
constructed according to my invention; figure 3 is a section on line A, B, of
figure 2 and figure 4 is a vertical section shewing the outer extremity of the
exhaust tube with its cup and shield. Similar letters in all the figures represent
similar parts.
a, is the hood and b, the exhaust tube of the apparatus which is so placed that
the hood shall open into the room or other place to be ventilated, the hood a, being
formed on one end of the exhaust tube b; the other end is passed outside the
building and is elbowèd or bent as shewn at c, in figure 1, and extends upwards
for a short distance; d, is the inverted cup or cap fixed at a short distance from the
said outer end of the exhaust tube b, as shewn in figure 4; e, is the shield or head'
enclosing the cup or cap d, and which is provided with suitable wind guards a', for
preventing the entrance of the external air through this end of the exhaust tube b;
f, is the atmospheric air tube for creating an induced current in the exhaust tube and
which is connected to the exhaust tube at g, and passes round the inner end of the
latter and along the side of the same outside the building; h, (figure 2) is the wire
gauze with which the outer end of the atmospheric air tube f, is covered; i is the
concentrating tube placed within the exhaust tube b, and consisting of a conical

page_text: tube as shewn in figure 2, having a deflecting cone j, and a hood or cover k, serving
to prevent the air passing through the exhaust tube b, from entering the end of
the concentrating tube ; the inner end of the tube i, is sealed or fixed in the
exhaust tube at ; m, is the concentrating tube fixed in the atmospheric air tube f
in an opposite direction to the concentrating tube i.
The arrows serve to indicate the direction of the currents of air and the action of
the apparatus is as follows:
The cool atmospheric air outside the building or the like will be forced through
the open mouth of the tube f, and passing round into the exhaust tube b, will pass
onwards to the outer end thereof, and in its passage will produce an induced
current in the concentrating tube i; the vitiated and heated air will be thereby
drawn into the exhaust tube b, from the interior of the building or the like through
the hood a, and will pass off with the atmospheric air to the outside of the building,
a return draught through the exhaust tube being effectually prevented by the cup
or cap d, and shield or head e, on the end of same.
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
1. In apparatus for ventilating buildings and the like the combination with tubes
such as b and f, for furnishing a supply of atmospheric air, of sealed conical or
concentrating tubes such as i, and m for concentrating the currents of vitiated air
and atmospheric air respectively substantially as and for the purposes herein before
described and represented in the accompanying drawing.
2. In apparatus for ventilating buildings and the like the combination with a
sealed tube for concentrating the current of vitiated air of a deflecting cone and
a hood substantially as and for the purposes herein before described and represented
in figure 2 of the accompanying drawing.
3. In apparatus such as that herein described for ventilating buildings and the
like the use of an inverted cup or cap such as d, having a suitable shield and wind
guards substantially as and for the purpose hereinbefore described and represented
in the accompanying drawing.
4. The combination of parts forming the improved apparatus for ventilating
rooms, buildings ships and sewers and for other ventilating purposes herein before
described and represented in the accompanying drawing.
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.