Improvements in Coke Ovens to Facilitate the Cooling of the Coke before Drawing.
Year: 1891

page_text: Date of Application, 17th Dec., 1891
Complete Specification Left, 19th Sept., 1892-Accepted, 22nd Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Coke Ovens to Facilitate the Cooling of the Coke
before Drawing.
I, CHARLES ERNEST BELL of Park House, Durham, Engineer, do hereby
declare the nature of this invention to be as follows :-
The object of this invention is to facilitate the cooling of coke in coke ovens
prior to its being withdrawn from the oven. The coke ovens I make as heretofore
of a circular form with domed roof ranged in two parallel rows with a chimney
flue between each pair of ovens and a short radial passage with arched roof from
cach oven at the front through which the coke is withdrawn.
Usually this radial passage as well as the main body of the oven has been charged
with coal and when the oven has been charged the front of the passage has been
bricked up prior to firing. After firing the built up door has been taken down and
the coke cooled by water sprayed over it on the top-this has been done by a
man standing at the front inserting into the oven above the coke a long perforated
pipe coupled to a flexible water supply main and moving the pipe to and fro above
the surface of the coke so as to uniformly sprinkle the whole surface.
In place of this I fix within the arched passage a water supply pipe with a
perforated end near the back of the passage where it meets the circular body-and
in place of charging this passage with coal at the time of filling the kiln I leave it
uncharged and build up the closing door at the back of the passage just in rear of
the perforated end of the pipe. The perforations in the pipe I form in such a way
that when the built up door has been pulled down and water under adequate
pressure admitted to the pipe water is sprayed over the whole upper surface of
the coke.
The perforated portion of the pipe may be in the form of an arch and be fixed
just below the arched roof of the passage or it may be formed at the end with a
chamber perforated at the back so as to form a rose or spreader.
In some cases it may be desirable to provide for moving the pipe backwards or
forwards a distance so that after the brick front has been pulled down the pipe
may be thrust back a distance towards or into the body of the oven.
In place of mounting the water supply pipe within the passage as above described
I in some cases provide for introducing the water spray through the opening which
is formed at the top of the domed roof of the oven. When the oven is being fired
this opening is as usual closed by a slab or door placed over it and the slab is
removed before commencing to sprinkle water over the coke. To provide for then
sprinkling water down through the opening I carry up a water pipe on the exterior
of the oven and joint to its end a perforated rose or spreader which can be turned
down out of the way when the opening is covered by the door or slab, but which
when the door or slab is removed can be turned into position within the opening
and fine jets of water be then directed from it over the surface of the coke.
In either of these ways the man who opens the ovens has only to open a water
supply pipe as soon as he has opened the oven and leave the water running for a
sufficient length of time to cool the coke.
Dated this 17th day of December 1891.

page_text: COMPLETE SPECIFICATION.
Improvements in Coke Ovens to Facilitate the Cooling of the Coke
before Drawing.
I, CHARLES ERNEST BELL, of Park House, Durham, Engineer, do hereby
declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement
The object of this invention is to facilitate the cooling of coke in coke ovens
prior to its being withdrawn from the oven. The coke ovens I make as heretofore
of a circular form with domed roof ranged in two parallel rows with a chimney flue
between each pair of ovens and a short radial passage with arched roof from each
oven at the front through which the coke is withdrawn.
Usually this radial passage as well as the main body of the oven has been charged
with coal and when the oven has been charged the front of the passage has been
bricked up prior to firing. After firing the built up door has been taken down and
the coke cooled by water sprayed over it on the top-this has been done by a man
standing at the front inserting into the oven above the coke a long perforated pipe
coupled to a flexible water supply main and moving the pipe to and fro above the
surface of the coke so as to uniformly sprinkle the whole surface.
In place of this I fit within the arched passage a water supply pipe with a
perforated end near the back of the passage where it meets the circular body-and
in place of charging this passage with coal at the time of filling the kiln I leave it
uncharged and build up the closing door at the back of the passage just in rear of
the perforated end of the pipe. The perforations in the pipe I form in such a way
that when the built up door has been pulled down and water under adequate
pressure admitted to the pipe water is sprayed over the whole upper surface of
the coke.
In some cases it may be desirable to provide for moving the pipe backwards or
forwards a distance so that after the brick front has been pulled down the pipe
may be thrust back a distance towards or into the body of the oven.
In place of mounting the water supply pipe within the passage as above described
I in some cases provide for introducing the water spray through the opening which
is formed at the top of the domed roof of the oven. When the oven is being fired
this opening is as usual closed by a slab or door placed over it and the slab is
removed before commencing to sprinkle water over the coke. To provide for then
sprinkling water down through the opening I carry up a water pipe on the exterior
of the oven and joint to its end a perforated rose or spreader which can be turned
down out of the way when the opening is covered by the door or slab, but which
when the door or slab is removed can be turned into position within the opening
and fine jets of water be then directed from it over the surface of the coke.
In either of these ways the man who opens the ovens has only to open a water
supply pipe as soon as he has opened the oven and leave the water running for a
sufficient length of time to cool the coke.
In order that my said invention may be fully understood and readily carried into
effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a front elevation, Figure 2 is a plan and Figure 3 is an end elevation
of coke ovens fitted in accordance with my invention with water supply apparatus
for semi automatic spraying by the side passage or doorway.
A is the oven bed. B the arched door way. Ca water pipe with nozzle perforated
with a number of small holes so directed as to deliver a spray of water all over the
top of the coke. D is the main water supply pipe. E is a cock to regulate the

page_text: flow of water into the oven. F and G are universal joints. As here shewn
the nozzle is moveable from one oven to another and can be thrust in more or less
as may be required.
Figures 4, 5 and 6 show an arrangement which admits of the nozzle of the water
pipe being thrust further into the oven and in this case it is so perforated as to
spray the coke all around.
Figures 7, 8 and 9 show another arrangement; here the water pipe has a joint
at El and also a valve; it can be raised to the position indicated by dotted lines
and then held up out of the way by a chain.
The arrangements for spraying by the opening at the top of the oven will be
readily understood without the aid of drawings.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The improvements herein described for facilitating the cooling of coke in coke
ovens.
Dated this 18th day of September 1892.
CHARLES ERNEST BELL.