CERTAIN IMPROVEMENTS IN COKE OVENS
Year: 1839

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
WALKER, of No. 3, Allen Street, in the County of Surrey, Oven Builder, send
greeting.
WHEREAS I did, by petition, represent unto Her most Excellent Majesty
Queen Victoria the First, that I had invented "CERTAIN IMPROVEMENTS IN
COKE OVENS," and Her said Majesty being willing to encourage all useful
Inventions, did issue Her Letters Patent under the Great Seal of Great Britain,
bearing date at Westminster, the Twenty-second day of May, in the second year
of Her reign, whereby Her said Majesty did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said John Walker, my exors, adññors, and
assigns, Her especial licence that I, the said John Walker, my exors, admors,
and assigns, or such others as I, the said John Walker, my exors, admors, and
assigns, should at any time agree with, and no others, from time to time and
at all times during the term of years therein expressed, should and lawfully
might make, use, exercise, and vend, within England, Wales, and the Town of
Berwick-upon-Tweed, and also in all Her Majesty's Colonies and Plantations
abroad, my said Invention, in which said Letters Patent is contained a proviso,
obliging me, the said John Walker, by an instrument in writing under my
hand and seal, particularly to describe and ascertain the nature of my said
Invention, and in what manner the same is to be performed, and cause the
same to be inrolled in Her Majesty's High Court of Chancery within six
calendar months next and immediately after the date of the said Letters
Patent, as in and by the same, reference being thereunto had, will more fully
and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
John Walker, do hereby declare that the nature of my said Invention, and

page_text: the manner in which the same is to be performed, are described and ascertained
in manner following, and by reference to the Drawings hereunto annexed,
which are to be taken to be and are parts of this instrument for all the
purposes aforesaid.
My Invention consists in a new mode of building or arranging the flue or
flues through and along which the flame and smoke pass from the oven into
the chimney, so as to oblige all the flame, smoke, and heated'air produced by or
arising from the combustion of the coals in the oven whilst the process of coking
is in operation, to descend and pass by and through several horizontal flues, built
of fire lumps, bricks, or tiles, underneath and around the bottom of the oven,
by which means the heat arising from or produced by the aforesaid combustion
of the coals will be rendered available to heat and bake or coke the lower
part of the coal lying at the bottom of the oven during the ordinary process
of coking. To render the description more clear, plans and sectional
Drawings are hereunto annexed, in which the same letters denote the same
parts. Figure 1 is the plan or horizontal section of the horizontal flues :(c, c,)
passing under the bottom of the oven; Figure 2 is a horizontal section of the
oven, taken at the middle of its height; Figure 3 is a horizontal section of a
chimney, arranged to receive the flues from several coke ovens; Figure 4 is a
vertical section of the oven, taken from side to side, and seen from the front
of the oven; Figure 5 is a vertical section, taken lengthways, and seen
from the side of the oven. A is the inside of the oven; B is the descending
flue by which the flame, smoke, and current of hot air pass into the hori
zontal flues c, c, c. At Figure 5 is seen the direction of the current of air
represented by arrows. In the first instance the current proceeds directly
from the oven, descending by the flue B into the centre flue C. Having
-reached the extremity of that flue the current divides itself into two currents,
and passes into the flues to the right and to the left, and after follow-
ing the serpentine direction of the flues C, C, as represented by the arrows,
the two currents thus formed rise by the flues D, D, as represented at
Figures 1 and 2, and enter at once into the ordinary horizontal chimney flue
E, and from thence into the chimney F. G is the masonry of the chimney;
H, the masonry of the oven; I, the mouth-piece of the oven; K, the brick
columns to carry the flue E. Openings, to be got at by removing a brick-or
iron plate, may be made at either of the extremities of each of the horizontal
flues in order to get at them from the outside, and clean them if necessary.
I declare the above to be a correct description of my improvements in coke
ovens, which may be applied to coke ovens of any description, or built upon
'any.plan; and although I have only represented flues passing underneath the

page_text: bottom of the oven, the flues might be made to pass inside the masonry work
round the sides of the oven; and although I have represented one descending
flue, seven horizontal flues, and two ascending flues, those numbers might be
varied according to the size of the oven and other circumstances; and although
I have given the horizontal flues a serpentine form, turning to the right and to
the left, their form and their direction might be varied at pleasure.
In fine, I claim only as my Invention the above-mentioned mode of building
or arranging the flue or flues through and along which the flame and smoke
pass from the oven into the chimney, so as to oblige all the flame, smoke, and
heated air produced by or arising from the combustion of the coals in the oven
whilst the process of coking is in operation to descend and pass by and through
several flues, as herein-before mentioned, so as to render the heat arising from.
or produced by the said combustion of the coals available to heat and bake or
coke the lower part of the coal lying at the bottom of the oven during the
ordinary process of coking; and I do not claim as my Invention any other
part or parts mentioned or described in the above description or in the said
Drawings, or either of them.
In witness whereof, I, the said John Walker, have hereunto set my
hand and seal, this Twenty-second day of November, in the year of
our Lord One thousand eight hundred and thirty-nine.
JOHN (L.s.) WALKER.
AND BE IT REMEMBERED, that on the Third day of November, in the
year of our Lord 1889, the aforesaid John Walker came before our said
Lady the Queen, in Her Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.
Inrolled the Twenty-second day of November, in the year of our Lord
One thousand eight hundred and thirty-nine,