Improvements in Ventilators.
Year: 1890

page_text: Date of Application, 6th Sept., 1˚90
Complete Specification Left, 6th June, 1891-Accepted, 25th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in Ventilators.
1, 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 improvements in appliances for ventilating rooms, and
buildings, and allowing a free inlet of fresh air into such rooms or buildings without
causing any draught which is objectionable to the occupants, and to appliances for
extracting the vitiated and foul air from every part of a room or building and
ensuring a free circulation of pure air without any draught.
My invention consists of a shield or flange from 3 to 4 inches broad and slightly
bevelled from within outwards, fixed on the front and side parts of the top edge of
the ordinary inlet tube or shaft, also a deflecting plate slightly larger than the
area of the tube or shaft, and fixed about one inch above the opening of the said
tube or shaft, the said plate to be horizontal, or slightly bevelled from behind or
from the wall outwards and upwards thus leaving the front and both sides free and
open for the discharge of fresh air.
In combination with ventilators for supplying fresh air, I employ shafts, pipes
or ventilators for removing the foul and vitiated air, and in connection with any of
these, I place slightly apart from the opening to the pipe, or shaft a flat plate
larger in area than the opening to the said shaft, so that vitiated air can be drawn
from any point in the room or building, this gathering plate is placed a short
distance from the bottom of the shaft for extracting vitiated air from a room or
building and it gathers the vitiated air from all parts instead of the shaft supplying
itself from one source, it also increases its action by confining the inlet to the
shaft on the same principle that placing a paper in front of a fire increases the
current of air passing through it. The plate also serves to hide the opening to
the shaft and make it ornamental. The same deflecting plate when used in a series
and so arranged as to baffle one another, act as an extractor of vitiated air from a
room when placed in a smoke flue or other shafts.
Where the vitiated and foul air is drawn into the smoke flues or into other shafts
I employ a series of battle plates enclosed in a box or casing, the front of the box
being covered with ornamental perforated or fret work and the first baffic plate
having an opening at one end, and the next plate an opening at the opposite end
and so on through the series, and to the shaft or flue, so that a current of air
passing from an inlet ventilator or other source passes through the opening in the
baffle plates which are so arranged that smoke is effectually prevented from entering
the room whilst a free out current is always maintained.
The above described appliances may be fixed in almost any position and ensure
a constant supply of pure air, and a constant removal of impure and foul air.
Dated the 4th day of September 1890.
WALTER BRIERLEY,
Central Chambers, Halifax, Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Ventilators.
I PARLASE 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 improvements in appliances for ventilating rooms and
buildings, and allowing a free' inlet of fresh air into such rooms or buildings
without causing any draught which is objectionable to the occupants nil to
appliances for extracting the vitiated and foul air from every part of a room or
building and ensuring a free circulation of pure air without any draught.
My invention consists of a shield or flange from 3 to 4 inches broad and slightly
bevelled from within outwards, fixed on the front and side parts of the top edge of
the ordinary inlet tube or shaft also a deflecting plate slightly larger than the area
of the tube or shaft, and fixed about one inch above the opening of the said tube
or shaft, the said plate to be horizontal or slightly bevelled from behind or from
the wall outwards and upwards thus leaving the front and both sides free and open
for the discharge of fresh air.
In combination with ventilators for supplying fresh air, I employ shafts, pipes or
ventilators for removing the foul and vitiated air, and in connection with any of
these, I place slightly apart from the opening to the exhaust pipe or shaft a fint
pinte larger in area than the opening to the said shaft so that vitiated air can ba
drawn from any point in the room or building this gathering plate is placed a short
distance from the bottom of the shaft for extracting vitiated air froin a room or
building and it gathers the vitiated air from all parts instead of the shaft supplying
itself from one source, it also increases its action by confining the inlet to the shaft
on the same principle that placing a paper in front of a fire increases the current of
air passing through it. The plate also serves to hide the opening to the shaft and
make it ornamental. A similar deflecting plate when used in a series and so
arranged as to bafile one another, act as an extractor of vitiated air from a room
when placed in a smoke flue or other shafts.
Where the vitiated and foul air is drawn into the smoke flues or into other shafts
1 employ a series of baffle plates enclosed in a box or casing, the front of the box
being covered with ornamental perforated or fret work and the first batlle plate
having an opening at one end and the next plate an opening at the opposite end
and so on through the series, and to the shaft or flue, so that a current of air
passing from an inlet ventilator or other source passes through the opening in the
battle plates which are so arranged that smoke is effectually prevented from entering
the room whilst a free out current is always maintained.
The above described appliances may be fixed in almost any position and ensure a
constant supply of pure air and a constant removal of impure and foul air.
Such being the nature and object of my invention the following is a complete
description of same reference being had to the accompanying drawings in which
Figs. 1 and 2 are front and end section of apparatus for application to walls
within rooms or buildings.
Fig. 3 is a cross section of roof illustrating application of my invention.
Fig. 4 is a plan of the battler plate ventilator as applied to breast of a chimney
flue or to a divisional wall.
Fig. 5 is a side elevation of the same in section through line A. B of Fig. 4.
At 1, Figs. 1 and 2, is the bevelled plate, 2 the shaft, 3 the deflecting plate being
slightly raised above the horizontal line at its outlet 4 the opening for passage of
air 5 and 6 being side outlets, 7 is the regulating plate free to turn on the axis & by
the finger bar the extremities of the said plate having slips of felt or india

page_text: rubber 10 which prevents any noise on closing the shaft and better secures the
exclusion of air when latter not required.
In Fig. 3 at 11 are upright shafts leading to outlet as shewn by arrows 12 13,
the direct entrance of air to the shafts 11 is prevented by the gathering plates 14
which ensure the inlet of air being only from directions radius to the plate 14
thereby a much greater circulation is obtained the said plates in addition to their
utility for purpose described serve to conceal the open end of the shafts and have
an ornamental effect and prevent any direct down draught or gust in stormy
weather.
The battler ventilator illustrated by Figs. 4 and 5 comprises a perforated or fret
work face plate 15 and box or casing 16 the space from front 15 to back 17 being
occupied by a series of baffler plates secured or cast to the casing so as to preclude
the exit of air from the room save and except by circuitous route indicated by the
arrows and said plates effectually prevent any back draught or down rush of air or
of smoke from the chimney passing into the room.
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. The combination of a deflecting plate 3 slightly larger than the area of the
tube or shaft 2 together with the plates hevelled or inclined as and for the purpose
herein described and as shewn by annexed drawings.
2. In combination with the exhaust pipe or shaft or ventilators the use of a
plate such as 14 shewn in the drawing and applied as and for the purpose herein
set forth.
3. The employment and combination of battle or diverting or deflecting plates
with ventilating shafts as and for the purpose herein set forth and illustrated by
annexed drawings Figs. 4-5.
TALLI
וד יגונו .TS M
TONI
181. THIS I HAV
PARLANE MACFARLANE WALKER.
By his Agent, Walter Brierley,
Central Chambers, Halifax.