A NEW OR IMPROVED VENTILATOR
Year: 1884

page_text: I EDWARD WOOLFENDEN of Rochdale in the County of Lancaster, Iron and
Tin-plate Worker do hereby declare the nature of said Invention for A NEW
OR IMPROVED VENTILATOR, to be as follows:-
My invention relates to ventilators and the object of my Invention is to
construct a simple and economical ventilator which will carry off the hot, foul and
vitiated air and at the same time supply a current of fresh air to workshops, or
sheds, dwellinghouses and other buildings or rooms.
In performing my Invention I fix in the roof of the building to be ventilated a
casing of metal or other suitable material containing a hollow metal tube or
cylinder the upper and outer end of which communicates with the atmosphere
through a suitable cap or cowl: this cowl is free to revolve and is preferably
formed of metal with suitable openings or perforations on one side and is provided
with a metal feather or tail which keeps the openings or perforations facing in the
direction in which the wind is blowing, thus insuring a constant supply of fresh
air to the metal tube the metal tube is perforated near the lower end which
projects into the room to be ventilated and is closed near the bottom below the
perforations by a hinged door or valve preferably made in two pieces.
The fresh air enters through the openings in the cowl and passes down the metal
tube and through the perforations near the lower end into the room below: the
hinged door or valve may be opened by a chain or cord or in other convenient
manner so as to admit an additional current of fresh air when required. The
outer casing and the metal tube are bolted together or secured in any convenient
manner and the space between them is open at the upper end to the atmosphere
and at the lower end to the room at a point above the perforations in the
metal tube. The space between the casing and the tube has a cover above it
to keep off rain and prevent downdraught. The hot or foul air passes from
the room up through this space and is free to escape under the cover into the
open air.
Dated this 3rd day of January 1884

page_text: I EDWARD WOOLFENDEN, of Rochdale in the County of Lancaster, Iron and
Tin-plate Worker do hereby declare the nature of said invention for A NEW
OR IMPROVED VENTILATOR and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement :-
My invention relates to ventilators and the object of my invention is to
construct a simple and economical ventilator which will carry off the hot, foul, and
vitiated air, and at the same time supply a current of fresh air to workshops or
sheds, dwellinghouses and other buildings or rooms.
In performing my Invention I fix in the roof of the building to be ventilated a
casing of metal or other suitable material containing a hollow metal tube or
cylinder the upper and outer end of which projects beyond the casing and
communicates with the atmosphere through a suitable cap or cowl: this cowl is
free to revolve and is preferably formed of metal with suitable openings or
perforations on one side and is provided with a metal feather or tail which keeps
the openings or perforations facing in the direction in which the wind is blowing,
thus insuring a constant supply of fresh air to the metal tube: the metal tube is
perforated near the lower end which projects into the room to be ventilated and
is closed near the bottom below these perforations by a hinged door or valve
preferably made in two pieces. The fresh air enters through the openings in the
cowl and passes down the metal tube and through the perforations near the lower
end into the room below the hinged door or valve may be opened by a chain or
cord or in other convenient manner so as to admit an additional current of fresh
air when required. The outer casing and the metal tube are bolted together or
secured in any convenient manner and the space between them is open at the
upper end to the atmosphere and at the lower end to the room, at a point above
the perforations in the metal tube. The space between the casing and the tube
has a cover above it to keep off rain and prevent downdraught. The hot or foul
air passes from the room up through this space, and is free to escape under the
cover into the open air.
:
A damper may be fitted in the inner tube above the perforations by which the
current of fresh air admitted to the room can be regulated or entirely shut off.
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―
The combination of parts forming the new or improved ventilator, substantially
as and for the purposes herein set forth.