AN IMPROVED CHIMNEY COWL AND VENTILATOR
Year: 1859

page_text: LETTERS PATENT to Alfred Bedborough, of the Town and County of
the Town of Southampton, Architect and Surveyor, for the Invention of
"AN IMPROVED CHIMNEY COWL AND VENTILATOR."
Sealed the 1st July 1859, and dated the 4th January 1859.
PROVISIONAL SPECIFICATION left by the said Alfred Bedborough at
the Office of the Commissioners of Patents, with his Petition, on the
4th January 1859.
I, ALFRED BEDBOROUGH, of the Town and County of the Town of
Southampton, Architect and Surveyor, do hereby declare the nature of the
said Invention for "AN IMPROVED CHIMNEY COWL AND VENTILATOR," to be
as follows:-
My Invention consists in constructing a cowl and ventilator in which all
down draught is prevented, and in which a much larger aperture is provided
at top for the smoke, vitiated air, &c., to pass off than in cowls of an ordinary
construction. My cowl consists of an inner tube or conical shaped flue
surrounded by an outer case, in the sides of which are transverse openings
with deflecting plates to give an upward direction to the air entering through
them; about two to four inches more or less from the top of the central tube
there is a stop plate which entirely covers all direct access to the tube from the
top of the cowl, but the smoke and vitiated air ascending through the tube are
carried off through apertures made and fitted in the form of an ornamental top

page_text: which communicate with spaces outside of the covering plate before alluded
Rain or other water is carried off from the covering plate through side
apertures, and through tubes which direct the water through the transverse
openings in the case outside of the inner tube, and tend to keep them clean.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Alfred Bedborough in the Great Seal Patent Office on the
4th July 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALFRED
BEDBOROUGH, of the Town and County of the Town of Southampton,
Architect and Surveyor, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of January, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-second year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Alfred Bedborough, Her special licence that I, the said Alfred Bedborough,
my executors, administrators, and assigns, or such others as I, the said Alfred
Bedborough, 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 "AN IM-
PROVED CHIMNEY COWL AND VENTILATOR," upon the condition (amongst others)
that I, the said Alfred Bedborough, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands and seals,
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 the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Alfred Bedborough, do hereby declare
the nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, reference being had to the Drawings hereunto annexed,
that is to say:-
My Invention consists in constructing a cowl and ventilator in which all down
draught is prevented, and in which a much larger aperture is provided at top
for the smoke, vitiated air, &c., to pass off than in cowls of an ordinary

page_text: construction. My cowl consists of an inner tube or conical shaped flue,
surrounded by an outer case in the sides of which are transverse openings,
with deflecting plates to give an upward direction to the air entering through
them, about two to four inches more or less from the top of the central tube
there is a stop plate which entirely covers all direct access to the tube from
the top of the cowl, but the smoke and vitiated air ascending through the
tube are carried off through apertures made and fitted in the form of an
ornamental top which communicate with spaces outside of the covering plate
before alluded to. Rain or other water is carried off from the covering
plate through side apertures, and through tubes which direct the water
through the transverse openings in the case outside of the inner tube, and
tend to keep them clean.
Figure 1 of the accompanying Drawings is an exterior elevation, and
Figure 2 is a vertical section of a chimney cowl and ventilator, constructed
according to this Invention. A is a conical shaped tube, surrounded by a
case or frame B, the sides of which are formed with transverse openings in
which are fitted deflecting plates or louvres C, C, which direct the air
upward, and thereby assist the draught; D is a stop plate placed above the
tube A; Smoke and vitiated air pass up the tube A, and out through
apertures formed in the ornamental top E, as indicated by the arrows'; the
plates C, C, assist the upward, while the plate D prevents down draught.
In sweeping pots constructed in this manner, the soot is forced over the tube
A, and falls between it, and the outer case B.
And having now described the nature of the said Invention, and in what
manner the same is to be performed, I declare that I claim the construction
of a chimney cowl and ventilator, with an inner tube or flue surrounded
by an outer casing provided with transverse openings and deflecting plates,
and with a stop plate and ornamental top, as herein-before described and
illustrated in the accompanying Drawings.
In witness whereof, I, the said Alfred Bedborough, have hereunto set
my hand and seal, this Second day of July, One thousand eight
hundred and fifty-nine.
A. BEDBOROUGH. (L.S.)
Witness to the signature of Alfred Bedborough,
WILLIAM HINVES.