AN IMPROVED APPARATUS FOR VENTILATING ROOMS AND OTHER ENCLOSED SPACES, AND FOR SIMILAR PURPOSES
Year: 1877

page_text: LETTERS PATENT to William Scott, of Anerley, in the County of Surrey,
T
Engineer, for the Invention of "AN IMPROVED APPARATUS FOR VENTILATING
ROOMS AND OTHER ENCLOSED SPACES, AND FOR SIMILAR PURPOSES."
led the 23rd November 1877, and dated the 26th May 1877.
!
PROVISIONAL SPECIFICATION left by the said William Scott at the Office
of the Commissioners of Patents on the 26th May 1877.
'
WILLIAM SCOTT, of, Anerley, in the County of Surrey, Engineer. "AN IMPROVED
APPARATUS FOR VENTILATING ROOMS AND OTHER ENCLOSED SPACES, AND FOR
SIMILAR PURPOSES."
My Invention relates to improved apparatus, chiefly designed for ventilating
rooms or apartments, and other enclosed spaces, for carrying off foul gases and other
emanations from sewers and drains, for preventing the smoking of chimneys, and
.for. other like purposes.
The said Invention comprises a novel and peculiar form of cowl or terminal,
secured upon a vertical spindle, which is mounted with a capability of turning
freely. in bearings at the top of the tube or shaft extending upward from the room
or other space to be ventilated.
The said cowl or terminal is constructed with an outside conical or taper chamber,
formed of galvanized sheet iron, or zinc, or other suitable material. The said
conical chamber has at its small end a conical enlargement. Inside the large end
of the said conical chamber is fitted a cone, which closes this end of the said
chamber, and extends inward from the same, being open at its small or inner end.
Surrounding. this small end is a second cone, of such a diameter as to leave an
annular space between its surface and that of the outer chamber: The small end of
the first cone enters or projects a short distance within the large end of the second
cone, and there is an annular space between them.
In cowls or, terminals of larger diameter, constructed as above described, I prefer
to use three or more internal cones. Vanes or wings are attached to the said outer
chamber of the cowl to ensure its turning towards the wind.
In some instances I place the cowl or terminal within an ornamental case, and

page_text: extend the vertical spindle upward through the said case, and provide its upper
extremity with a vane or vanes for the above purpose.
To ensure the passage of air through sewers or drains, and the like, I employ a
trap constructed with a grating, so arranged as to permit the air to pass without
disturbing the water seal. I prefer to construct this trap with an inclined dip plate,
placed at such an angle as to facilitate the passage of solid matter. I provide this
dip plate with a small valve, which prevents the suction or exhaust of the sewer
and the unsealing of the trap in case of the flushing of the sewer. These traps are
provided with a lid or cover for facilitating their cleaning.
In some cases I place over the said trap a box or chamber, fitted with a number
of trays, on which may be placed suitable disinfectants, and over which the air
drawn by the ventilating cowl, or otherwise, into the sewer or drain pipes will
pass.
:
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Scott in the Great Seal Patent Office on the 26th November
1877.
WILLIAM SCOTT, of Anerley, in the County of Surrey, Engineer. "AN IMPROVED
APPARATUS FOR VENTILATING ROOMS AND OTHER ENCLOSED SPACES, AND FOR
SIMILAR PURPOSES.”
My Invention relates to improved apparatus for ventilating rooms or apartments,
and other enclosed spaces, for carrying off foul gases and other emanations from
sewers and drains, for preventing the smoking of chimneys, and for other like
purposes..
In the accompanying Drawings,
Figure 1 is a sectional elevation of a building provided with my improved
ventilating apparatus.
Figure 2 is a vertical section of my improved cowl, and shews the same arranged
in connection with a sewer.
Figure 3 is a side elevation and Figure 4 is a horizontal section of a modified.
form of my improved cowl.
In Figure 1 the rooms of the building are shown provided with apertures a to
admit air to the top part of the same, and with apertures b for the exit of air from
such rooms. These apertures 6 are arranged in connection with vertical pipes c¹,
which are connected with a tube, shaft, or chimney c; at the top of which I arrange
my improved cowl e. The said improved cowl or terminal e is secured upon a
vertical spindle d, which is mounted with a capability of turning freely on bearings d¹
. at the top of the tube or shaft c, extending upward from the room or other space to
be ventilated.
The said cowl or terminal e, as shewn in Figure 2, is constructed with an outside
conical or taper, chamber e¹, formed of galvanized sheet iron, or zinc, or other
suitable material. The said conical chamber has at its small end a conical enlarge-
'ment e². Inside the large end of the said conical chamber is fitted a cone e³, which
"closes this end of the said chamber e¹, and extends inward from the same, being
open at its small or inner end. Surrounding this small end is a second cone e*, of
such a diameter as to leave an annular space between its surface and that of the

page_text: outer chamber e¹. The small end of the first cone e³ enters or projects a short
distance within the large end of the second cone e', and there is an annular space
between them.
In cowls or terminals of large diameter, constructed as above described, I prefer
to use three or more internal cones. Vanes or wings e* are attached to the said
outer chamber e¹ of the cowl to ensure its turning towards the wind.
In Figures 3 and 4 I have shewn a cowl composed of three taper or wedge-shaped
chambers e, e, e. In this modification of the said cowl the sides of the said
chambers are flat. The inner or narrow end of the chamber e³ enters the larger end
of the second chamber eº, and there is an aperture or space on both sides between
these two chambers. The inner end of the chamber e enters the larger end of the
chamber e, and there is also a space or opening between them on both sides. The
chamber e' has an enlargement es at its narrow end, as shewn.
In some instances I place the cowl or terminal within an ornamental case, and
extend the vertical spindle upward through the said case, and provide its upper
extremity with a vane or vanes for the purpose above specified.
To ensure the passage of air through sewers or drains, and the like, I employ a
trap f (see Figure 2), constructed with a grating f¹, so arranged as to permit the air
to pass without disturbing the water seal. I prefer to construct this trap with an
inclined dip plate.f, placed at such an angle as to facilitate the passage of solid
matter through the pipe. I provide this dip plate with a small valves, which prevents
the suction or exhaust of the sewer, and the unsealing of the trap in case of the
flushing of the sewer. This trap is provided with a lid or cover f* for facilitating
the cleaning of the same.
In some cases I place over the said trap a box or chamber g, fitted with a number
of trays h, on which may be placed suitable disinfectants, and over which the air
drawn by the ventilator e into the sewer or drain pipes will pass.
Having thus fully described the said Invention, and the manner of performing
the same,
I wish it understood that I claim,-
First. The cowl or terminal with outer and inner conical or taper portions, con-
structed and arranged to form air passages between and through them, and which
has its outlet aperture enlarged, and is provided with a vane or vanes, as above set
forth.
Second. The combination of the said cowl with the sewer trap and other
parts, shewn in Figure 2 of the Drawings, as above set forth and for the purposes
specified.
In witness whereof, I, the said William Scott, have hereunto set my hand
and seal, this Twenty sixth day of November, in the year of our Lord
One thousand eight hundred and seventy-seven.
WILLIAM SCOTT. (L.S.)