Improvements in Ventilators.
Year: 1891

page_text: Date of Application, 10th Dec., 1891
Complete Specification Left, 10th Sept., 1892-Accepted, 15th Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Ventilators.
I PARLANE MACFARLANE WALKER of 12 Blackwall, Halifax in the County
of York Veterinary Surgeon do hereby declare the nature of this invention to be
as follows:-
This invention relates to ventilators for exhausting and carrying off vitiated air
and the products of combustion from consumption of coal gas in rooms, and
buildings, the apparatus being specially arranged to prevent direct inrush of cold
air, and to exclude rain and down draughts.
In the construction of apparatus for purpose aforesaid according to this my said
invention I employ an outer and an inner casing preferably two concentric cylinders
-through each of which are slits slots, perforations or other openings for admission
of air to cause the up or exhaust current. Above the parts just described and
supported by the outer casing is an angular or <> shaped chamber there being
a central opening or exit passage way above the <> for escape of air. Above
this outlet is a flat plate preferably having a cone shaped top or peak.
Within the <> or angular space above referred to and extending to the centre
or midway between the concentric casings is a slightly concave plate which is for
purpose of preventing water of condensation snow or rain passing down the main
shaft. There is also a horizontal plate placed within and at the junction of the
lower part of the <> space which plate through perforations therein serves to
direct any rain water or moisture to the outlet at the bottom of the outer casing or
cylinder.
It is very desirable that the deflecting angle of the upper part of the < > space
should be such as would intersect exactly the centre line of the outlet say about
35° as also that all the openings slits, slots or perforations of the outer casing should
be opposite blanks in the inner casing, that is to say-not any two holes should be
opposite each other or the desired division of the air currents is not obtained.
Dated the 9th day of December 1891.
WALTER BRIERLEY,
Bank Chambers, Waterhouse Street, Halifax,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Ventilators.
I PARLANE MACFARLANE WALKER of 12 Blackwall Halifax in the County
of York Veterinary Surgeon 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 ventilators for exhausting and carrying off vitiated air
and the products of combustion from consumption of coal gas in rooms and
buildings the apparatus being specially arranged to prevent direct inrush of cold
air and to exclude rain and down draughts.
In the construction of apparatus for purpose aforesaid according to this my said
invention I employ an outer and an inner casing preferably two concentric cylinders
through each of which are slits slots perforations or other openings for admission
of air to cause the up or exhaust current. Above the parts just described and
supported by the outer casing is an angular or <> shaped chamber there being
D

page_text: a central-opening or exit passage way above the <> for escape fair above this
outlet is a flat plate preferably having a cone shaped top or peak!
Within the <> or angular space above referred to and extending to the centre
or midway between the concentric casings is a slightly concave plate which is for
purpose of preventing water of condensation snow or rain passing down the main
shaft. There is also a horizontal plate placed within and at the junction of the
lower part of the <> space which plate through perforations therein serves to
direct any rain water or moisture to the outlet at the bottom of the outer casing or
cylinder.
space
It is very desirable that the deflecting angle of the upper part of the
should be such as would intersect exactly the centre line of the outlet say about
35° as also that all the openings slits slots or perforations of the outer casing should
be opposite blanks in the inner casing that is to say-not any two holes should be
.opposite each other or the desired direction of the air currents is not obtained.
:
Such being the nature and object of my said invention the following is a
complete description of same reference being had to the accompanying drawings in
which
Fig. 1 is an end elevation of the improved ventilator!
Fig. 2 is a sectional elevation of Fig. 1
Fig. 3 is a sectional plan on line A B of Fig. 2.
Fig. 4 is a sectional elevation of a single exhaust ventilator suitable for ventilating
poultry cotes dog kennels and other small buildings or huts.
In the construction of apparatus for purpose aforesaid according to this my said
invention employ an outer casing 1 and an inner casing 2 preferably two
concentric cylinders through each of which are slits slots perforations or other
openings 3 for admission of air to cause the up or exhaust current. Above the
parts just described and supported by the outer casing is an angular or <> shaped
chamber 4 there being a central opening or exit passage way.5 above the <> 4
for escape of air and causing a double exhaust current. Above this outlet is a flat
plate 6 for deflecting the current as indicating by the arrows the inner surface a
of the angle > 4 guides and conducts wäter of condensation or rain water to
the perforated plate 9 the latter further serves to prevent dust smuts and fog from
entering the buildings the water passing out at the slit at b. The plate preferably
has a cone shaped top or peak 7.
Within the <> or angular space 4 above referred to and extending to the
centre or midway between the concentric.casings is a slightly concave plate 8 which
is for purpose of preventing water of condensation snow or rain passing down the
main shaft. There is also a horizontal plate 9 placed within and at the junction
of the lower part of the <> space 4 which plate 9 through perforations 10
therein serves to direct any rain water or moisture to the outlet at b
It is very desirable that the deflecting angle of the upper part 11 of the
<> space should be such as would intersect exactly the centre line of the outlet
at 12 say about 35° so..that the current is directed to the centre of the plate 8
and by the latter deflected as shewn by the arrows as also that all the openings
slits slots or perforations 3 of the outer casing should be opposite blanks in the
inner casing that is to say-not any two holes should be opposite each other
or the desired direction of the air currents is not obtained. The correct spacing
vione plate from another ensures the angle of incident being equal to the angle
deflection the drawings hereto annexed shew the correct relative spacing or
separation of the several parts to ensure the effective, action of the appliance.
When applying the improved apparatus as a chimney cowl the plate
required.
is not
Having now particularly described and ascertained the nature and object of
my said invention I declare that what I claim is-
1. The improvements in ventilators wherein is combined the parts 1, 2, 3 and 4
as illustrated by drawings annexed.
2..15

page_text: 2. The improvements comprising the parts 2, 3, 4 in combination and illustrated
by annexed drawings.
Dated this 9th day of September 1892.
PARLANE MACFARLANE WALKER,
By his Agent, Walter Brierley,
Waterhouse Street, Halifax.