IMPROVEMENTS IN APPARATUS FOR COOLING BLAST FURNACE OR SMELTING FURNACE SLAG OR SCORIA AS IT RUNS FROM THE FURNACE, AND LOADING THE SAME INTO WAGONS OR TRUCKS IN A SOLID STATE
Year: 1872

page_text: LETTERS PATENT to Charles Wood, of the Tecs Iron Works, Middles-
brough-on-Tees, in the County of York, for the Invention of
"IMPROVEMENTS IN APPARATUS FOR COOLING BLAST FURNACE OR SMELTING
FURNACE SLAG OR SCORIA AS IT RUNS FROM THE FURNACE, AND LOADING THE
SAME INTO WAGONS OR TRUCKS IN A SOLID STATE.”
Sealed the 22nd May 1872, and dated the 31st January 1872.
PROVISIONAL SPECIFICATION left by the said Charles Wood at the
Office of the Commissioners of Patents, with his Petition, on the
31st January 1872.
I, CHARLES WOOD, of the Tees Iron Works, Middlesborough-on-Tees,
in the County of York, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN APPARATUS FOR COOLING BLAST FURNACE OR SMELTING
FURNACE SLAG OR SCORIA AS IT RUNS FROM THE FURNACE, AND LOADING THE SAME
INTO WAGONS OR TRUCKS IN A SOLID STATE," to be as follows:-
This Invention has for its object improvements in apparatus for
cooling blast furnace or other smelting furnace slag or scoria as it runs
from the furnace.

page_text: The apparatus is composed of a circular table or trough upon which
near the outside the slag or scoria falls from the usual runner or spout as
it comes out of the furnace, the table or trough revolving at the same
time; the slag is thus spread upon this table or into this trough in a
thin layer. Before the table or trough has completed its revolution the
partially cooled slag or scoria comes in contact with a fixed shovel or
scraper which removes the slag or scoria from the table or trough, and it
then falls over the side into wagons. This shovel or scraper is made so
that it can be lifted out of action by a handle. Whilst the wagons are
being changed, the table or trough still continuing to revolve, the slag or
scoria simply accumulates on the table or trough until all is again ready.
If the slag or scoria is not sufficiently cooled by the time it arrives at
the shovel or scraper I run a little water upon it.
If it be desired to raise the point of delivery of the slag or scoria into
wagons I place the table or trough in an inclined position, the slag or
scoria running upon the lower side and the shovel or scraper removing
it at the higher side. That part of the table or trough upon which the
liquid slag or scoria falls may be hollow, and keep the hollow space full
of water to prevent the table or trough getting too hot and cracking. I
make this table or trough revolve by a pinion working into the teeth of
a wheel fixed under the table.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Wood in the Great Seal Patent Office
on the 31st July 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES 2
WOOD, of the Tees Iron Works, Middlesborough-on-Tees, in the County
of York, send greeting.
1
WHEREAS Her most Excellent Majesty Queen Victoria, by. Her
Letters Patent, bearing date the Thirty-first day of January, in the
year of our Lord One thousand eight hundred and seventy-two, in 3
the thirty-fifth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Charles Wood, Her
special license that I, the said Charles Wood, my executors, adminis-
trators, and assigns, or such others as I, the said Charles Wood, my

page_text: Figure 1 is a plan, and Figure 2 is a vertical section of apparatus
constructed according to my Invention. a, a, is an axis or central post,
and b, b, is a table mounted so as to be able to rotate upon it; the
table 6 receives a slow motion by means of the ring of teeth c bolted to
its under side, and the driving pinion d, which is in gear with these
teeth, or a wheel can be fixed upon the bowl g and driven by a pinion;
e, e, are cast-iron slabs fixed upon and forming part of the table, the
slag is received upon them from the trough f, into which it flows from
the furnace. The slabs e are each cast upon a wrought-iron zig-zag
pipe e', and they are cooled when in use by water flowing through these
pipes. The water enters the pipes e¹ from the bowl g, which is supplied
by a pipe h, and the water flows down and escapes into the trough i,
which has an outlet at ².
To prevent the slag running off the table whilst it is yet fluid the
table may be provided with a shallow rim on one or both sides so as to
form it into a trough. I, I, are scrapers for removing the cooled slag
from the table and pushing it off into the truck m. The scrapers are
mounted upon a bar 1, and this bar can be turned to lift the scrapers
whilst a loaded truck is removed and replaced by an empty one.
If the table be provided with a fixed rim forming a trough the
scrapers are so formed as to raise the slag or scoria over this rim, but
the plane surface table is preferred. Small streams of water may be run
upon the slag before it is removed from the table to cool it more
completely.
Another way of forming the surface of the table is shewn in plan at
Figure 3, and in section at Figure 4; the part which supports the slag is
cast hollow and kept full of water. Or again this portion of the table
may rotate within a stationary water trough, as is shewn at Figure 5.

page_text: Having thus described the nature of my said Invention, and the
manner of performing the same, I would have it understood that I do
not confine myself to the exact details described, but I claim the
arrangement of a rotating table or trough for cooling and conveying
away slag or scoria as it flows from a furnace, such table or trough
having scrapers combined with it to remove the slag or scoria from its
surface substantially as described.
I also claim the method of applying water to cool the surface of a
rotating slag or scoria table, substantially as described.
In witness whereof, I, the said Charles Wood, have hereunto set
my hand and seal, this Twenty-ninth day of July, in the year of
our Lord One thousand eight hundred and seventy-two.