CERTAIN IMPROVEMENTS IN THE MEANS OF CONSUMING SMOKE, AND THEREBY ECONOMISING FUEL AND HEAT IN STEAM ENGINES OR OTHER FURNACES OR FIRE-PLACES
Year: 1838

page_text: CHEETHAM'S SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, DAVID
CHEETHAM, of Staley Bridge, in the County of Cheshire, Spinner, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date, at West-
minster, the Fourteenth day of August, in the second year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said David
Cheetham, Her especial license, full power, sole privilege and authority, that
I, the said David Cheetham, my executors, administrators, and assigns, and
such others as I, the said David Cheetham, ny executors, administrators, and
assigns should agree with, and no other, from time to time, and at all times
during the term of years therein expressed, should and lawfully might make,
exercise, and vend, within England, Wales, and the Town of Berwick upon
Tweed, my Invention of "CERTAIN IMPROVEMENTS IN THE MEANS OF CONSUMING
SMOKE, AND THEREBY ECONOMISING FUEL AND HEAT IN STEAM ENGINES OR OTHER
FURNACES OR FIRE-PLACES;" in which said Letters Patent is contained a pro-
viso, that I, the said David Cheetham, shall cause a particular description
of the nature of my said Invention, and in what manner the same is to be
performed, to be inrolled in Her Majesty's High Court of Chancery within
six calendar months next and immediately after the date of the said in part
rècited Letters Patent, as in and by the same, reference being thereunto had,
will more fully and at large appear.
NOW KNOW YE, that in compliance with the proviso, I, the said
David Cheetham, do hereby declare that the nature of my said Invention, and

page_text: the manner in which the same is to be performed, is particularly described
and ascertained in the following explanation, that is to say:-
My improvements in the means of consuming smoke, and thereby econo-
mising fuel and heat in steam engine or other furnaces or fire-places, consist,
firstly, in causing a quantity of atmospheric air to be mixed or combined with
the smoke and other gaseous products of combustion in any convenient situa-
tion contiguous to the furnace or fire-place, and afterwards in returning the
same through or over the fire in the furnace, for the purpose of effecting the
entire combustion of the smoke or other gaseous product, previously to its
having any communication with the flue or chimney. By thus passing the
smoke or other gaseous products of combustion, in combination with a quantity
of atmospheric air, over or through the fire, the smoke will be effectually con-
sumed and fuel greatly economized in all furnaces or fire-places used either
for the generation of steam, evaporating fluids, or any other purpose where
any combustible matter is used in furnaces or fire-places. This admixture of
atmospheric air with the gaseous products of combustion and returning the
same through or over the fire in the furnace, may be effected in any convenient
manner that shall be most easily accommodated to the circumstances of the
furnace where it is to be used; but I should recommend that it be accom-
plished by-the application or agency of rotary fanners or blowers or pneumatic
pumps, which may be worked by hand or any other power, and situate in any
convenient place in connection with the furnace, taking the supply of atmo-
spheric air from adjustable apertures or openings made in the box or casting of
the fanner or blower, and thus mixed with the smoke or other gaseous products,
and propelled by this apparatus through suitable flues, and thus conducting the
same through or over the fire as may be found most desirable. The second
feature of my improvements consists in passing the smoke and other products
of combustion from steam engine or other furnaces through water, by the
application of the rotary fan, blower, or pneumatic pump, as above alluded
to, in order to clear, screen, or cleanse the gaseous products evolved from coal
in process of combustion, and the small particles of coal, dirt, and other com-
bustible matter may thus be arrested and precipitated in the water and again
thrown upon the fire or furnace and be perfectly consumed, and the fuel econo-
mized, instead of being allowed to escape into the flue or chimney.
In witness whereof, I, the said David Cheetham, have hereunto set my
hand and seal, the Eleventh day of February, in the year of our Lord
One thousand eight hundred and thirty-nine.
DAVID (L.S.) CHEETHAM.

page_text: AND BE IT REMEMBERED, that on the Eleventh day of February, in
the second year of the reign of Her Majesty Queen Victoria, the said David
Cheetham came before our said Lady the Queen in Her Chancery, and
acknowledged the instrument aforesaid, and all and every thing therein con-
tained and specified, in form above written. And also the instrument afore-
said was stamped according to the tenor of the Statute made in the fifty-fifth
year of the reign of His late Majesty King George the Third.
Inrolled the Thirteenth day of February, One thousand eight hundred
and thirty-nine.