IMPROVE- MENTS IN APPARATUS FOR SEPARATING DUST FROM THE GASES EVOLVED FROM BLAST FURNACES
Year: 1865

page_text: LETTERS PATENT to Charles Cochrane, of Woodside Iron Works, near,
Dudley, in the County of Worcester, for the Invention of "IMPROVE-
MENTS IN APPARATUS FOR SEPARATING DUST FROM THE GASES EVOLVED FROM
BLAST FURNACES."
Sealed the 16th March 1866, and dated the 8th November 1865.
PROVISIONAL SPECIFICATION left by the said Charles Cochrane at the
Office of the Commissioners of Patents, with his Petition, on the 8th
November 1865.
I, CHARLES COCHRANE, of Woodside Iron Works, near Dudley, in the
County of Worcester, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN APPARATUS FOR SEPARATING DUST FROM THE GASES
EVOLVED FROM BLAST FURNACES," to be as follows:-
This Invention has for its object improvements in apparatus for separating
dust from the gases evolved from blast furnaces. For these purposes a
chamber is employed, and by preference of a cylindrical form, into which
the gases from a blast furnace or furnaces are received at the upper end
and descend to and pass off by an outlet pipe or passage at the lower end
of such chamber. In the chamber are a number of horizontal parallel
partitions each composed of several parts, which, when the chamber is
cylindrical, are preferred to be radial, there being in each case narrow

page_text: spaces or passages, between the neighboring parts of which a horizontal
partition is composed. The parts of one partition are so arranged as to
come below the open spaces formed in or which come between the parts
of the partition next above it, so that as the gases descend through the
openings or passages between the parts composing one horizontal partition,
they come against the parts of the next partition, and in so doing will
deposit some of the dust on the parts of such lower partition, and so on
till the gases finally escape into the outlet pipe or passage at the lower end
of the chamber.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Cochrane in the Great Seal Patent Office on
the 8th May 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
COCHRANE, of Woodside Iron Works, near Dudley, in the County of
Worcester, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighth day of November, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-ninth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Charles Cochrane, Her special licence that I, the said Charles
Cochrane, my executors, administrators, and assigns, or such others as I,
the said Charles Cochrane, 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 "IMPROVEMENTS IN APPARATUS FOR SEPARATING DUST FROM THE GASES EVOLVED
FROM BLAST FURNACES," upon the condition (amongst others) that I, the
said Charles Cochrane, 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 aud
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Charles Cochrane, do hereby declare
the nature of the. said Invention, and in what manner the same is to be

page_text: performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say:―
This Invention has for its object improvements in apparatus for
separating dust from the gases evolved from blast furnaces. For these
purposes a chamber is employed, and by preference of a cylindrical form,
into which the gases from a blast furnace or furnaces are received at the
upper end and descend to and pass off by an outlet pipe or passage at the
lower end of such chamber. In the chamber are a number of horizontal
parallel partitions, each composed of several parts, which, when the
chamber is cylindrical, are preferred to be radial, there being in each case
narrow spaces or passages, between the neighboring parts of which a
horizontal partition is composed. The parts of one partition are so
arranged as to come below the open spaces formed in or which come
between the parts of the partition next above it, so that as the gases descend
through the openings or passages between the parts composing one
horizontal partition they come against the parts of the next partition, and
in so doing will deposit some of the dust on the parts of such lower
partition, and so on till the gases finally escape into the outlet pipe or
passage at the lower end of the chamber.
Having thus stated the nature of my said Invention I will proceed
more fully to describe the manner of performing the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a vertical section of apparatus constructed according to
my Invention; Figure 2 shows a horizontal section; Figure 3 shows a
plan of the top of the apparatus; and Figure 4 shows the cylinder as
being laid open or flat, by which the positions of the doors which close
the side openings will be seen; these openings are used when cleaning the
horizontal partitions. The inlet for the passage of the gas into the apparatus
from a blast furnace is at the top as shown. The horizontal partitions are
by preference made in radial sections which have slots or openings through
them. The edges of these sections where they butt or come together are
notched out so as to form similar slots or openings between them, as those
which are made through the sections, but the horizontal partitions with
the requisite openings through them may be otherwise formed and put
together. The outlet for the gas to pass away from the apparatus is at
the lower end thereof as is shown.
Having thus described the nature of my Invention, and the manner of
performing the same, I would have it understood that what I claim is, the

page_text: combined arrangement of apparatus herein described for separating dust
from gases evolved from blast furnaces.
In witness whereof, I, the said Charles Cochrane, have hereunto set
my hand and seal, this Seventh day of February, in the year of our
Lord One thousand eight hundred and sixty-six.
CHARLES COCHRANE. (L.S.)