Improvements in Ventilating Apparatus.
Year: 1890

page_text: Date of Application, 25th Jan., 1890
Complete Specification Left, 25th Oct., 1890-Accepted, 29th Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in Ventilating Apparatus.
I WILLIAM THOMAS SUGG of Vincent Street in the City of Westminster, Engineer,
do hereby declare the nature of this invention to be as follows:-
The object of this invention is to provide for the top of ventilating shafts, means
whereby not only a down draught is provented, but an up draught is ensured.
In carrying out this invention, I adapt to the top of the ventilating shaft, a
chamber of any convenient height, and of larger diameter than the shaft. To the
top of the shaft I may apply a disc valve, or the ordinary flap valves arranged to
remain closed in their normal position, or to be closed against upward hot currents
by any downward currents of cold air.
The top of the chamber I close with a perforated plate, the holes in which are left
with a burr, and the plate is placed with the burrs upwards. A short distance above
this plate, I secure a solid cone of larger diameter than the chamber.
The cone prevents the currents of air striking downwards into the chamber,
and the straight base causes the currents of air to pass direct across the top of
the plate.
In this way, a vacuum is created in the chamber, and an upward current is caused
in the ventilating shaft, the valves lifting for the purpose.
This invention is applicable to all kinds of ventilating shafts, whether for gas
sunlights, gas fires, ventilating sewers, or for any other purpose.
Dated this 25th day of January 1890.
NEWTON & DUN,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Ventilating Apparatus.
I WILLIAM THOMAS SUGG of Vincent Street in the City of Westminster, 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:
The object of this invention is to adapt to the top of ventilating shafts, means
whereby an up draught is ensured, at the same time providing means to prevent
a down draught.
In carrying out this invention, I adapt to the top of the ventilating shaft, a
chamber cf any convenient height, and of larger diameter than the shaft. To the
top of the shaft I apply a disc valve, arranged to remain closed in its normal position,
or to be closed by any downward currents of cold air.
The top of the chamber I close with a perforated plate, the holes in which are left
with a burr, forming short tubes, and the plate is placed with the burrs upwards;
or tubes may be inserted in the holes. A short distance above the outlets of the
tubes, I secure a solid cone of larger diameter than the chamber.
The conical portion prevents the currents of air striking downwards into the
chamber, and the straight base causes the currents of air to pass direct across the top
of the tubes.
In this way, a vacuum will be created in the chamber, and an upward current will
be caused in the ventilating shaft, the valves lifting for the purpose.
This invention is applicable to all kinds of ventilating shafts, whether for gas
sunlights, gas fires, ventilating sewers, or for any other purposes.

page_text: In the accompanying drawing. I have shown my invention in sectional elevation
in Fig. 1, and in side elevation (a small portion in section to show a slight modification)
in Fig. 2.
A is the ventilating shaft. B is an inverted conical chamber adapted to the end
thereof. is a perforated plate which closes the top of the chamber. The holes in
this plate are struck from below, so as to leave upwardly projecting burrs C', which
foru short tubes (see Fig. 1). Or the holes may be bored out, and short tubes C²
inserted, as seen in Fig. 2.
D is a flat plate, which is secured to the cover a short distance above the outlets
of the tubes C or C³, by stays or struts. The plate D gives the currents of air a
direction straight across the tops of the tubes, and thereby creates a suction in the
ventilating shaft, by which means an up-draught is ensured in the shaft.
So long as there is the least movement in the air, the up-draught will be maintained,
but provision should be made for down draughts when the air is still.
For this purpose 1 employ a disc valve E, which has its seat on the end of the
ventilating shaft, and slides freely up and down on a rod or pin a, carried by a cross
stay in the chamber B. Or I may use the arrangements of valve shown and
described in the Specification filed in respect of the application for Letters Patent
by John Frederick Simmance, No. 18,801 of 1889.
The above described arrangement of ventilating apparatus will be very useful on
shipboard, as it will be found to act under almost any circumstances, and it is not
open to the objection of presenting a free passage to water, as in other ventilators.
In fact, the chamber B may be filled with water without any passing down the shaft
when the valve is seated.
When intended for shipboard, an opening will be provided in the chamber B, to
allow of the discharge of any water that may by chance enter the chamber, which
opening may be closed by an automatic or other valve, or a cock.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what 1
claim is :-
1. In ventilating apparatus, the combination with a ventilating shaft, of a rigid or
flexible disc valve having its seat on the end of the shaft, a chamber connected with
the shaft and enclosing the valve, a perforated cover, provided with tubes or the
equivalent, to the chamber, and a flat deflector above and parallel with the cover,
all substantially as and for the purpose set forth.
2. In ventilating apparatus, the combination with a ventilat.ng shaft, of a chamber
closed at top by a perforated cover provided with tubes or heir equivalent, and a
straight deflector arranged above and parallel with the cover, as and for the purpose
set forth.
3. The arrangement of cowl substantially as herein shown and described, to be
used for ventilating purposes, as set forth.
Dated this 25th day of October 1890.
NEWTON & SON,
Agents for the Applicant.