AN, IM- PROVED MODE OF OR PROCESS AND APPARATUS FOR DESTROYING OR DECOMPOSING THE NOXIOUS GASES GIVEN OFF FROM KILNS, DRYING FLOORS, AND OTHER PLACES OR MANUFACTURES
Year: 1874

page_text: LETTERS PATENT to Owen Bowen, of Lombard Street, in the City of
London, Civil Engineer, and Ambrose Miller, of the Coal Exchange,
in the City of London, Coal Factor, for, the Invention of "AN, IM-
PROVED MODE OF OR PROCESS AND APPARATUS FOR DESTROYING OR DECOMPOSING
THE NOXIOUS GASES GIVEN OFF FROM KILNS, DRYING FLOORS, AND OTHER
PLACES OR MANUFACTURES."
Sealed the 9th March 1875, and dated the 28th September 1874.
PROVISIONAL SPECIFICATION left by the said Owen Bowen and
Ambrose Miller at the Office of the Commissioners of Patents,
with their Petition, on the 28th September 1874.
We, OWEN BOWEN, of Lombard Street, in the City of London, Civil
Engineer, and AMBROSE MILLER, of the Coal Exchange, in the City of
London, Coal Factor, do hereby declare the nature of the said Invention
for "AN IMPROVED MODE OF OR PROCESS AND APPARATUS FOR DESTROYING OR
DECOMPOSING THE NOXIOUS GASES GIVEN OFF PROM KILNS, DRYING FLOORS, AND
OTHER PLACES OR MANUFACTURES," to be as follows:-
:-
The object of our Invention is to absorb, neutralize, decompose, destroy,
or otherwise wonder innocuous the noxious ղ
PODA

page_text: arising from various chemical manufactures or processes in the industrial
arts, so as to prevent such processes or manufactures from becoming a
nuisance to the surrounding neighbourhood.
As an example of our improved mode of dealing with these noxious
gases or vapours we will explain our Invention as applied to a kiln for
burning cement. To this end we adapt to the exit opening at the top
of kiln (which may be of any suitable form or construction) a pipe or
tube whereby all the gases evolved from the kiln may be carried off and
conveyed to a close chamber, instead of being allowed to escape into the
atmosphere as is now the case. In this close chamber is constructed a
shallow tank containing water, which will absorb some of the gases
evolved from the kiln. The decomposition of these gases is assisted by
a jet of steam which is conveyed to the close chamber by. means of a
suitable pipe connected with a steam boiler placed a convenient distance
away from the tank. Such of the gases as are not absorbed by the water
or decomposed by the hot steam are conducted to the furnace or fire-place,
where by passing over the incandescent fuel they will be burned, or at
any rate deprived of their noxious odours; they may then be allowed to
pass to the chimney and escape into the atmosphere without creating
a nuisance.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Owen Bowen and Ambrose Miller, in the Great
Seal Patent Office on the 25th March 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, OWEN
BOWEN, of Lombard Street, in the City of London, Civil Engineer, and
AMBROSE MILLER, of the Coal Exchange, in the City of London, Coal
Factor, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-eighth day of September, in
the year of our Lord One thousand eight hundred and seventy-four, in
the thirty-eighth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto us, the said Owen Bowen and Ambrose
Miller, Her special licence that we, the said Owen Bowen and Ambrose
Miller, our exccutors, administrators, and assigns, or such others as

page_text: we, the said Owen Bowen and Ambrose Miller, our executors, admi-
nistrators, 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 IMPROVED MODE OF OR
PROCESS AND APPARATUS FOR DESTROYING OR DECOMPOSING THE NOXIOUS GASES
GIVEN OPP FROM KILNS, DRYING FLOORS, AND OTHER PLACES OR MANUFACTURES,"
upon the condition (amongst others) that we, the said Owen Bowen and
Ambrose Miller, our executors or administrators, by an instrument in
writing under our 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 Owen Bowen, on behalf of myself
and of the said Ambrose Miller, do hereby declare the nature of our
said Invention, and in what manner the same is to be performed, to bo
particularly described and ascertained in and by the following statement,
reference being had to the Drawing hereunto annexed, and to the letters
and figures marked thereon (that is to say) :-
The object of our Invention is to absorb, neutralize, decompose,
destroy, or otherwise render innocuous the noxious gases, vapours, or
smells arising from various chemical manufactures or processes in the
industrial arts, such as the manufacture of cement and various chemical
substances, the roasting of ores, or other processes in which condensable
gases are evolved, the main object of the Invention being to prevent
such processes or manufactures from becoming a nuisance to the
surrounding neighborhood.
As an example of our improved mode of dealing with these noxious
gases or vapours we will explain our Invention as applied to a kiln for
burning cement, and in the accompanying Drawing Fig. 1 is a plan
view; and Fig. 2, a longitudinal vertical section of the apparatus and
appliances whereby the gases evolved from a kiln of this description are
dealt with.
The kiln A in which the cement is burned is of the ordinary con-

page_text: In carrying out our Invention we adapt to the exit opening at the top
of the kiln A (which, as before mentioned, may be of any suitable form
or construction) a pipe or tube a, whereby all the gases evolved from
the kiln A may be carried off and conveyed to a close chamber b, instead
of being allowed to escape into the atmosphere as is now the case. In
this close chamber is constructed a shallow tank c containing water which
will absorb some of the gases evolved from the kiln. The decomposition
of these gases is assisted by a jet of steam which is conveyed to the close
chamber by means of a suitable pipe d connected with a steam boiler e
placed a convenient distance away from the tank c. Any convenient
form of boiler may be employed. In the Drawing the boiler e is of the
waggon type, but when economy of fuel is an object a Cornish boiler
would be preferable. Such of the gases as are not absorbed by the
water in the tank c or decomposed by the hot steam in the chamber b
are conducted to another chamber f, where they will pass over the
surface of a body of cold water contained in the tank or shallow vessel g,
in which the water is kept constantly in motion by being fed into the
vessel at one end, and after being caused to travel in a serpentine
direction by means of the washboards g', g', arranged as indicated by
dots in the plan view Fig. 1, is ultimately discharged at the opposite
end, as indicated by the arrow in Fig. 1. In this way the water is kept
in constant agitation and is kept cold, in which state it will more readily
absorb the hot gases. Those gases which are not absorbed will be
carried forward to the furnace or fire-place h, where by passing over the
incandescent fuel they will be burned, or at any rate deprived of any
remaining noxious odours. The draught caused by the fire in the
furnace or fire-place h will be sufficient to draw the gases from the top.
of the kiln A and conduct them through the apparatus to the chimney j.
When a considerable portion of the condensable gases have been
absorbed by the water in the tanks c and g, the remainder may be
allowed to pass to the fluc i which will conduct them to the chimney j,
from whence they will escape into the atmosphere, where not being
of an acrid or irritating character, the uncondensed gases coming from
the furnace will not create a nuisance. At the bottom of the chimney
shaft is another shallow water tank k which is provided with a series
of wash boards k¹, k', seen best in the plan view Fig. 1, and is supplied
with water which flows in at one end through a suitable pipe, and out
at the opposite end through another pipe. The water is by this means
caused to circulate in a zig-zag or serpentine direction, and by a con-.

page_text: tinuous flow being kept up the water is maintained in constant motion,
and kept cold as in the tank g.
Having now described our Invention of "An Improved Mode of or
Process and Apparatus for Destroying or Decomposing the Noxious
Gases given off from Kilns, Drying Floors, and other Places or Manu-
factures," and having explained the manner of carrying the same into
effect, we claim as the Invention secured to us by Letters Patent as
aforesaid, the adaptation to any convenient part of a kiln, oven, drying
floor, furnace, or other apparatus (from which noxious gases are evolved)
of a close chamber or chambers provided with shallow vessels containing
water, such close chambers, or some of them, being also supplied with
steam which is made to commingle with the gases contained in the
chambers, the whole being arranged as and for the purposes herein set
forth.
In witness whereof, I, the said Owen Bowen, have hereunto set
my hand and seal, the Twenty-fifth day of March, in the year of
our Lord One thousand eight hundred and seventy-five.