Year: 1889

page_text: I, GEORGE CONNELL of Grainger Street, in the City and County of Newcastle upon
Tyne, Surveyor, do hereby declare the natnre of said 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 carrying off vitiated and heated air from
apartments, structures, buildings and constructions of every description where
smoke flues or air flues are available.
This is effected by an apparatus placed in the flue at the top, or any other part, of
the place to be ventilated but preferably at the top.
The apparatus consists of a box or frame with divisions forming chambers and
shafts in the same for regulating the direction of the air the whole made of metal or
other suitable material.
The air from the place to be ventilated is made to take an ascending direction or a
descending direction before entering the flue or both ascending and desconding
directions at one and the saine time.
The air is made to take an ascending direction before entering the flue by means of
a short shaft from the top of a gathering chamber the upper end of which shaft
projects into the flue causing the smoke and heated air to impinge upon it and he
deflected off, thereby causing an upward suction or drawing power by which the
air of the room is rapidly drawn into the flue. The air current is further increased
by the plate forming the gathering chamber becoming heated and thereby causing
the air in contact with it to ascend. This I call the upcast system.
The air is made to take a descending direction before entering the flue by means
of a short shaft from the bottom of the gathering chamber before mentioned the
lower end of which shaft projects into the flue sufficiently to cause the smoke and
heated air in the flue to impinge upon it and be deflected off, thereby causing a
P

page_text: Figs. 1. 2. 3. 4. 5 and 6 aro vertical sections of the ventilator.
Fig. 1. Downcast ventilator, in which A is the flue, B the gathering chamber for
the air from the room, C the downcast shaft, D deflector for upward current,
E E¹ deflectors for downward current, F frame and wire front and G concrete
filling in.
Fig. 2. Upeast ventilator in which A is the fine. B the gathering chamber for the
air from the room, C the upcast shaft, D, D' deflectors for upward current, E deflector
for downward curront, F frame and wire front and G concrete filling in. In this
pattern the plate at the back of the gathering chamber will become heated and
thereby increase the extracting power.
Fig. 3. Upeast ventilator with two shafts ce¹ divided by a diaphragm, for larger
sizes of ventilators in which the reference lotters to Fig. 2 apply. In this pattern
the plate at the back of the gathering chamber will become heated and thereby
increase the extracting power.
Fig. 4. Upcast and downcast ventilators combined in which A. is the flue, B the
gathering chamber for the air, C the upcast shaft, ( the downcast shaft, D, D¹, D²,
deflectors for upward current, E E deflectors for downward current. The plate D' is
hinged at X and is kept open by the weighted end, F frame and wire front and
GG' concrete filling in.
In this pattern with a strong upward current in the flue the downcast extracts
most air and with a weak upward current the upcast extracts most air.
Fig. 5 is the same as Fig. 4 but shews the method of converting the ventilator
into a downcast only by closing the upcast with the hinged plate by a wire cord or
chain and pulley from inside the room.
Fig. 6 is the same as Fig. 4 but shows the method of converting the ventilator
into an upcast only by closing the hinged portion, projecting into the flue at the
bottom in Figs. 4 and 5, by a wire cord or chain and pulleys from inside the room.
In the combined upcast and downcast ventilators, shown by Fig. 4, in which both
shafts are open, the gathering chamber is common to both upcast and downcast
shafts and according as the draw or extracting power of the one or the other is the
greatest so it will draw the most air from the gathering chamber, so that, at one time
the downcast will be using more than half the air in the chamber and at another the
upcast, the action being in fact automatic.
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 :-
1. In a flue ventilator, extracting air from a room by gathering it into a chamber
from which it passes into the flue in an upward or downward direction, or in both
directions at the same time, by means of shafts the outlet mouths of which project
into the flue so as to cause a suction from the room as herein before described.
2. In a flne ventilator, having a gathering chamber and upcast shaft, the arrange-
ment of the back plates so as to become heated by contact with the ascending liot

page_text: gases in the flue, thereby creating an ascending current of air from the room as
shewn by Figs. 2 and 3 of the accompanying drawings.
3. In flue ventilators as herein before described the sloping projection at top to
prevent the down draft entering the room through the ventilator."
4. Flue ventilators for extracting air from a room, comprising the various parts in
combination constructed and operating substantially as herein before described and
illustrated by the accompanying drawings or any mere modification thereof.
1009
T. J. DANSON, F.I.P.A.,
2. St. Nicholas' Buildings, Newcastle-upon-Tyne,
Agent for Applicant.