IMPROVEMENTS IN COKE OVENS
Year: 1864

page_text: LETTERS PATENT to William Culley Stobart, of Etherley, in the County
of Durham, Coal Owner, for the Invention of "IMPROVEMENTS IN COKE
OVENS."
Sealed the 8th August 1864, and dated the 9th February 1864.
PROVISIONAL SPECIFICATION left by the said William Culley Stobart
at the Office of the Commissioners of Patents, with his Petition,
on the 9th February 1864.
I, WILLIAM CULLEY STOBART, of Etherley, in the County of Durham, Coal
Owner, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN COKE OVENS," to be as follows:-
My Invention consists in constructing coke ovens with borizontal flues in
the side walls, through which the products of combustion are made to pass in
a zig-zag direction before entering the chimney. I place vertical flues or
shafts at the back of the ovens, with openings in the top and leading at bottom.
into the side flues. I construct the inner side walls to incline inwards towards
the bottom.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Culley Stobart in the Great Seal Patent Office on
the 9th August 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, 1, WILLIAM
CULLEY STOBART, of Etherley, in the County of Durham, Coal Owner, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Ninth day of February, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-seventh year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said William Culley Stobart, Her special licence that I, the
said William Culley Stobart, my executors, administrators, and assigns, or
such others as I, the said William Culley Stobart, my executors, adminis-
trators, 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 COKE OVENS," upon the condition
(amongst others) that I, the said William Culley Stobart, 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 per-
formed, 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 William Culley Stobart, do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the Drawings hereunto
annexed, that is to say :-
My Invention consists in constructing coke ovens with horizontal flues in
the side walls, through which the products of combustion are made to pass in
a zig-zag direction before entering the chimney. 1 place vertical flues or
shafts at the back of the ovens, with openings in the top and leading at bottom
into the side flues. I construct the inner side walls to incline inwards towards
the bottom.
Figure 1 of the accompanying Drawings is a vertical longitudinal section,
Figure 2a transverse section, and Figure 3 a plan through the line a, b,

page_text: of Figure 1, of a coke oven constructed according to my Invention. Similar
letters of reference represent similar parts in each of the Figures.
A represents the horizontal flues in the side walls of the oven running in
a zig-zag direction; B, the vertical flues or shafts at the back of the ovens,
with openings in the top thereof, and leading at bottom into the side flues;
these vertical flues are built within the main wall of the oven, so that the
flame is swept at once down the flues without passing through eyes, as here-
tofore; C is the backing or wall between the sides of the ovens; and D, the
backing running under the chimney at the backs of the ovens; E is a flue
between the two rows of ovens for the reception of the products of combus-
tion after their zig-zag passage (as indicated by the arrows) through the
horizontal flues in the side walls of the oven; F is the cover of this flue; G is
the chimney.
And having now described the nature of the said Invention, and in what
manner the same is to be performed, I declare that I claim,-
First, constructing coke ovens with horizontal flues in the side walls
through which the products of combustion are made to pass in a zig-zag
direction before entering the chimney, substantially as herein-before described
and illustrated in the accompanying Drawings.
Second, constructing coke ovens with vertical flues or shafts built within
the main walls at the backs of the ovens with openings in the top, and leading
at bottom into side flues, substantially as herein-before described and illus-
trated in the accompanying Drawings.
In witness whereof, I, the said William Culley Stobart, have hereunto
set my hand and seal, this Fourth day of August, One thousand eight
hundred and sixty-four.
WILLIAM C. STOBART. (L.S.)