Improvements in Coke Ovens.
Year: 1892

page_text: Date of Application, 27th Jan., 1892
Complete Specification Left, 25th Oct., 1892-Accepted, 3rd Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Coke Ovens.
1, JOSEPH MITCHELL of Mitchell Main Colliery, Wombwell near Barnsley, in
the County of York, Civil and Mining Engineer, do hereby declare the nature of
this invention to be as follows:-
According to this invention, for the purpose of admitting atmospheric air to
ignite and cause combustion of gases given off by the distillation of the heated
fuel in a coke oven, the oven has in its walls, flues or passages which for a part
of their length at the inner ends are made of gradually decreasing depth but of
increasing width and with an upward inclination. This portion of each flue or
passage is or may be formed with a special brick having externally a configuration
suited to the internal shape of the oven and through it a hole or passage gradually
decreasing in depth and increasing in width as set forth. In some cases the entire
flue.may have an upward inclination towards the interior of the oven.
Dated this 27th day of January 1892.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.Č., Agent for the Applicant..
COMPLETE SPECIFICATION.
Improvements in Coke Ovens.
1, JOSEPH MITCHELL of Mitchell Main Colliery, Wombwell near Barnsley, in
the County of York, Civil and Mining 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 :-
According to this invention for the purpose of admitting atmospheric air to
ignite and cause combustion of gases given off by the distillation of the heated
fuel in a coke oven, the oven has in its walls, passages which for a part of their
length at the inner ends are made of gradually decreasing depth but of increasing
width and with an upward inclination. This portion of each flue or passage is or
may be formed with a special brick or bricks having externally a configuration
suited to the internal shape of the oven and through it a hole or passage gradually
decreasing in depth and increasing in width as set forth. In some cases the entire
flue may have an upward inclination towards the interior of the oven.
In the accompanying drawings,
Fig. 1 is a front elevation.
Fig. 2 a plan and
;
Fig. 3 is a vertical section, taken on the line a Fig. 2 of a coke oven of the
beehive type constructed with air inlet passages of the kind referred to.
1 is the front wall of the oven in which are the specially formed passages 2 for
admitting air to the oven which is constructed with an ordinary charging opening 3
through which flame and products of combustion escape during the coking.
operation, and with an ordinary clearing opening that is closed during the coking
operation. As will be seen the inner portion of each of these air passages, which I
prefer to form in special perforated or hollow bricks 6 as hereinafter described, is
made of gradually decreasing depth and of gradually increasing width, and with an
upward inclination as shown, so that air passing therethrough will issue therefrom,
just above the level of the fuel, in the form of a thin upwardly inclined stream of
CD017

page_text: gradually increasing width. By this means the air is caused to spread over the top
of the fuel being coked and become effectually mixed with the gases given off from
such fuel thereby ensuring complete combustion of such gases and obviating waste
of fuel such as takes place when air is admitted through the clearing door as has
heretofore been usual. The oven in the example illustrated is constructed with
three air passages, the middle one being arranged horizontally and the other two
inclined upwardly towards the interior of the oven throughout their entire length;
but obviously the number and disposition of these passages may be varied to suit
requirement.
Figs. 4, 5 and 6 are respectively a plan, an inside elevation and a transverse
section drawn to a larger scale of one set of the special bricks above referred to.
This brick which for convenience of manufacture may advantageously be made
in two parts 6, 6" as shown is made concave on its inner side 8 so as to conform to
the internal shape of the oven and the ends 9 and top 10 are made inclined as
shown to an extent varying according to the curve of the wall and roof of the
oven in which it is to be used. These figures clearly show the peculiar form of
the air passage 1 formed through the brick, Fig. 4 showing the gradually
increasing width of such passage: Fig. 5 the appearance of the passage as seen
from the inner end thereof, and Fig. 6 showing its gradually increasing depth and
upward and inward inclination.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A coke oven constructed with air inlet passages which for a part of their
length at the inner ends are made of gradually decreasing depth but of increasing
width and with an upward and inward inclination substantially as hereinbefore
described for the purpose specified.
2. In the construction of coke ovens with air inlet passages of the kind referred
to in the preceding claim, the use of bricks formed substantially as hereinbefore
described with reference to and shown in Figs. 4, 5 and 6 of the accompanying
-drawings.
Dated this 25th day of October 1892.
JOSEPH MITCHELL,
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.