Improvements in Ventilators.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Ventilators.
I, JAMES COUSLAND, 7, Rupert Street, Glasgow, Engineer, do hereby declare the
nature of this invention to be as follows:-
This invention relates to house and ship ventilators and it has for its object
to improve their construction and increase their efficiency.
In carrying out my invention I construct the ventilator with the usual shaft
and outer casing or guard with longitudinal openings therein. Arranged con-
centrically within the casing and opposite each opening is an angled baffle plate
having its edges curved outwards to a slight extent for the purpose of deflecting
the air currents and increasing their speed over the openings. Arranged within
the baffles and opposite the openings left between them are vertical deflecting
plates which extend upwards from the shaft to the top of the ventilator and prevent
the air currents striking each other whilst directing them through the outlets.
These deflecting plates are so arranged as to project outwards at right angles from
the circumference of the shaft and towards the openings between the baffle plates.
Dated this 21st day of December 1897
H. D. FITZPATRICK,
70, Wellington Street, Glasgow, Agent.
I, JAMES COUSLAND, of 7, Rupert Street, Glasgow, 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 house and ship ventilators and it has for its object
to improve their construction and increase their efficiency.
And in order that my said invention may be properly understood I have here-
unto appended an explanatory sheet of drawings, whereon,
Fig. 1 is a side elevation of one mode of constructing the ventilator.
Fig. 2 is a sectional plan taken on the line - Fig. 1.
Fig. 3 is another form of the ventilator.
In carrying out the invention I construct the ventilator with the usual shaft a
and outer casing or guard 6 with longitudinal openings c therein. Arranged
concentrically within the casing and opposite each opening is an angled baffle
plate d having its edges curved outwards to a slight extent for the purpose of
deflecting the air currents and increasing their speed over the openings. Arranged
D
a77

page_text: within the baffles and opposite the openings left between them are vertical
deflecting plates e which extend upwards from the shaft to the top of the ventilator
and prevent the air currents striking each other whilst directing them through
the outlets. These deflecting plates are so arranged as to project outwards at right
angles from the circumference of the shaft and towards the openings between the
baffle plates.
f is the base of the ventilator Fig. 1.
The invention can be applied to invisible roof ventilators, louvre, and other
ventilators where suitable.
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 consider novel and desire to claim is:-
A ventilator having all its parts including the vertical deflecting plates e
arranged and combined together substantially as hereinbefore described with
reference to the drawings annexed.
יווי
100
Pa
1
1000
H. D. FITZPATRICK,
100, Wellington Street, Glasgow, Agent.