An Improved Ventilator.
Year: 1898

page_text: I, RICHARD BRIGGS, of 18, Leicester Street, Southport,. in the County of Lan-
caster, Gentleman, do hereby declare the nature of this invention to be as follows:-
This invention relates to the construction of an improved ventilator (for build-
ings) which I make preferably of sheet metal.
The improved ventilator is made in the form of an inverted truncated cone which
is open at both ends, and is fixed in a hole made in the ceiling of the room or build-
ing to be ventilated, in such a position that its lower or smaller end projects down-
wards into the room or building, whilst its upper or larger end projects above the
roof thereof. This upper edge is made with a flange extending outwards all round
having its outer edge turned slightly_downwards.
Above this upper end of the cone I fix by means of brackets or arms attached
thereto a cap or cover of a larger diameter consisting of a disc with a downward
projecting cylindrical rim all round the edge; the position and dimensions of the
cap being such that there is a space for the escape of the air between it and the
upper edge of the inverted cone, and also a space all round between the flange on
the latter and the downward projecting cylindrical rim of the cap or cover.
It will be seen therefore that the effect of any wind or current of air in any direc-
tion whatever will be to cause a certain amount of suction in the inverted cone,
and consequently to draw the heated air out of the room or building to be ventilated,
the cap with its downward projecting rim preventing any down draught, and the
flange at the upper end of the inverted cone preventing any rain which may be
blown against the outside of the cone from passing into the interior thereof, and
thence into the room or building.
D
101
1900
GEO. DAVIES & SON,
Agents for the Applicant, 4, St. Ann's Square, Manchester.
An Improved Ventilator.
I, RICHARD BRIGGS, of 18, Leicester Street, Southport, in the County of Lan-
0 caster, Gentleman, 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 ventilator for buildings
..

page_text: The improved ventilator is made in the form of an inverted truncated cone which
is open at both ends and is fixed, in a hole made in the ceiling or roof of the room
or building to be ventilated, in such a position that its lower or smaller end
pro-
jects downwards into the room or building, whilst its upper or larger end projects
above the roof thereof, as shown in section of the annexed drawing, a being the
roof, and the inverted truncated cone or ventilator.
The upper edge of the cone is made with a flange e extending outwards all round
having its outer edge by preference turned slightly downwards.
Above this upper end of the cone 6 I fix by means of brackets or arms & attached
thereto a cap or cover of a larger diameter consisting of a disc e with a downward
projecting cylindrical rim f all round the edge; the position and dimensions of the
cap being such that there is a space for the escape of the air between it and the
upper edge of the inverted cone 6 and also a space all round between the flange c
on the latter and the downward projecting cylindrical rim f of the cap or cover.
It will be seen therefore that the effect of any wind or current of air in any
direction whatever will be to cause a certain amount of suction in the inverted
cone band consequently to draw the heated air out of the room or building to be
ventilated, the cap e with its downward projecting rim f preventing any down
draught, and the flange eat the upper end of the inverted cone preventing any
rain which may be blown against the outside of the cone from passing into the
interior thereof, and thence into the room or building.
When a lath and plaster ceiling is used the smaller end of the cone b will be
carried lower so as to reach below the ceiling of the room.
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:
An improved ventilator consisting of an inverted truncated cone open at each
end and provided with an external flange at its upper end, in combination with
a disc or cap of larger diameter provided with a downward projecting rim sub-
stantially as hereinbefore described and illustrated by the drawing annexed.
Dated this 11th day of Tu1 1900
GEO. DAVIES & SON,
Agents for the Applicant, 4, St. Ann's Square, Manchester.