IMPROVED MODE OB MEANS OF VENTILATION
Year: 1871

page_text: LETTERS PATENT to Michael Tossell, 1, Clarence Road, Lower
Clapton, Middlesex, for the Invention of "IMPROVED MODE OB
MEANS OF VENTILATION."
Sealed the 3rd April 1872, and dated the 7th October 1871..
PROVISIONAL SPECIFICATION left by the said Michael Tossell at
the Office of the Commissioners of Patents, with his Petition; on
the 7th October 1871.
I, MICHAEL TOSSELL, 1, Clarence Road, Lower Clapton, Middlesex,
do hereby declare the nature of the said Invention to be "IMPROVED
MODE OR MEANS OF VENTILATION," to be as follows:-
"
-
A double or divided tube the one part for the admission of pure
air, the other part to promote the escape of the impure air. This
ventilator fixed in the wall of a room would project slightly and possess
two apertures; the upper to allow the heated air free escape, and the
lower by means of a perforator to admit the pure air from without.

page_text: To cach part is attached a swinging flap or valve with levers, and
connected is a pulley, over which passes a cord or chain to regulate or
close both apertures at one time or otherwise as may be deemed
desirable. The front part of the ventilator is so constructed that it will
prevent draught in the apartment were it is fixed, it being made to to
overlap the lower aperture. At the termination of the cord or chain
already referred to is a brass plate with various holes to regulate or close
the valves. The external end of double tube projecting beyond the
wall is curved, the lower part is pierced with many holes for the pure
air to pass through the ventilator, the upper part is a guard to keep the
wind from checking the outflow of heated air, while the curve allows
the heated air to ascend.
The whole is protected by means of a corrugation or double flutes, so
that although the rain cannot enter, the air may freely ascend. Inside
the curve is fixed an upright Venetian bar or bars to direct the air
inward. If intended for a room and forming a centre ornament in a
ceiling, it will project down into the room in the form of a pierced tube,
the bottom of which is larger than the tube itself, so as to direct the
pure air that enters through the pierced tube and prevents draught.
The bottom would be an inverted or reversed funnel with a ledge over
the mouth, and a rosette through which the hot air escapes by means of
a tube attached. At the top of the same are many perpendicular
Venetian bars outside a corrugation to divert the rain or wet, and over a
double guide or guard regulated by a revolving vane.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 2
filed by the said Michael Tossell in the Great Seal Patent Office
on the 6th April 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MICHAEL
TOSSELL, of 1, Clarence Road, Lower Clapton, Middlesex, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of October, in the year
of our Lord Oue thousand eight hundred and seventy-one, in the
thirty-fifth year of Her reign, did, for Herself, ller heirs and

page_text: successors, give and grant unto me, the said Michael Tossell, Her
special licence that I, the said Michael Tossell, my executors, adminis-
trators, and assigns, or such others as I, the said Michael Tossell,
my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVED MODE OR MEANS OF VENTILATION," upon the condition (amongst
others) that I, the said Michael Tossell, my executors or administrators,
by an instrument in writing under my, or their, or one of their hands
and scals, should particularly describe and ascertain the nature of
the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in tlic Great Seal Patent Office within
six calendar months next and immediately after the date of the said

page_text: air
The whole is protected by means of a corrugation or double flutes, so
that the rain cannot enter, and yet permit the air freely to ascend;
inside of curve is fixed an upright Venetian bar or bars to direct the
air. When used in a partition or window it would be as a letter S with
a pivot to swing on in its middle, the bottom half to direct the pure
downward, while it projects into the room, and the upper part projecting
outwards and upwards to aid the outflow of heated air; to the pivot
in the middle is attached a lever with a cord as before to regulate or
close the two apertures. If intended for a room and made as a centre
ornament in cciling it will project down into the room in the form of a
pierced tube the bottom of which is larger than the tube itself, so as to
direct the pure air that enters through the pierced tube horizontally to
obviate draught. The larger bottom be an inverted or reversed funnel
or cone with ledge, over the mouth an ornamental rosette through
which the hot air escapes by means of an internal or double tube,
attached to which is one or more pullics with cord or chain to regulato
or close by drawing the cone and rosette nearer the ceiling or otherwise;
at the top or upper end of double tube, either on the deck of ship or
roof of building, there is attached to the outer tube many perpendicular
Venetian bars to direct the air inward; placed a little apart reaching
round the tube, and between the tubes, a corrugation or double flute to
divert the wet or rain from entering through the tubes while the air
may pass downward; over the corrugation and inside the Venetian bars
is a double guide or guard, the one to direct the pure air downwards, the
other a guard to guide the outflow of hot air from being checked, both
being attached together and with a top revolving on one spindle, all
being directed or worked by a vane.
In witness whereof, I, the said Michael Tossell, have hereunto sct
my hand and seal, this Seventh day of April in the year of our