IMPROVEMENTS IN AND CONNECTED WITH ĆOKE OVENS, AND IN THE UTILIZATION OF HEAT RESULTING THEREFROM
Year: 1873

page_text: LETTERS PATENT to Peter Jensen, of 89, Chancery Lane, in the
County of Middlesex, Engineer and Patent Agent, for the Invention
of "IMPROVEMENTS IN AND CONNECTED WITH ĆOKE OVENS, AND IN THE
UTILIZATION OF HEAT RESULTING THEREFROM." -A communication' from
abroad by Julius Erichsen and Jörgen Georg Maardt, both of
Copenhagen, in the Kingdom of Denmark.
PROVISIONAL SPECIFICATION left by the said Peter Jensen at the
Office of the Commissioners of Patents, with his Petition, on the
18th February 1873.
I, PETER JENSEN, of 89, Chancery Lane, in the County of Middlesex,
Engineer and Patent Agent, do hereby declaro the nature of the said
Invention for "IMPROVEMENTS IN AND CONNECTED WITH COKE OVENS, AND IN
THE UTILIZATION OF HEAT RESULTING THEREFROM," (a communication to me
from abroad by Julius Erichsen and Jörgen Georg Maardt, both of
Copenhagen, in the Kingdom of Denmark,) to be as follows:-
In the Specification of a former Patent dated the 10th of May 1872,
No. 1423, I have described modes of utilizing the waste heat from coke

page_text: ovens of a peculiar construction, and made according to the Specification
of a previous Patent dated the 15th of April 1872, No. 1122, to the
heating of gas retorts, to the burning of lime, cement, or other materials
or objects, to the heating of steam boilers, and to evaporating, heating
and boiling purposes generally.
Now according to this present Invention, the application of the
principle of utilization of the wasto heat from coke ovens is further
developed, all as herein-after described.
The main feature of this Invention consists in the mixing of the gases
or gaseous products of combustion proceeding from the coke ovens with
the whole or a part of the crude lighting gas which is distilled, and
proceeding from the material contained in a gas retort or retorts heated
by a part of the coke oven heat. The gas produced in the retorts passes
wholly or partly into the interior of the kiln or other chamber where
the heat is required, commingling with the gas from the coke ovens
(and if applied to the burning of lime, cement, or bricks, or other
materials or objects, if desired, with the heated gases resulting from fuel
mixed with the said materials or objects), and with atmospheric air
admitted in regulated quantities, as required, by means of ventilators,
dampers, or other well-known appliances for such purposes, the result
of such arrangement being a perfect control over the heat required
for any of the desired heating, evaporating, or boiling purposes. Part
of the gas from the retort may be utilized for ordinary lighting and
heating puposes.
For burning lime, cement, bricks, or other materials and objects, the
coke ovens and retorts are, by preference, arranged symmetrically round
the kiln. A small chimney provided with damper may be connected to
cach coke oven to give draught when required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Peter Jensen in the Great Seal Patent Office on
the 18th August 1873..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PETER
JENSEN, of 89, Chancery Lanc, in the County of Middlesex, Engineer
and Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent bearing date the Eighteenth day of February, in the year of our
Lord One thousand eight hundred and seventy-thrce, in the thirty-sixth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Peter Jensen, Her special licence that I, the
said Peter Jensen, my executors, administrators, and assigns, or sucli
others as I, the said Peter Jensen, my executors, administrators, 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, tho Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN AND CONNECTED WITH COKE OVENS,
AND IN THE UTILIZATION OF HEAT RESULTING THEREFROM," (a communication.
to me from abroad by Julius Erichsen and Jörgen Georg Maardt, both
of Copenhagen, in the Kingdom of Denmark,) upon the condition
(amongst others) that I, the said Peter Jensen, 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
performed, 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 Peter Jensen, do hereby declare
the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement, that is to say :-
'
:
In the Specification of a former Patent (dated the 10th of May 1872,
No. 1423), I have described modes of utilizing the waste heat from coko
ovens of peculiar construction, and made according to the Specification.
of a previous Patent (dated the 15th of April 1872, No. 1122), to the

page_text: heating of gas retorts, to the burning of lime, cement, or other materials
or objects, to the heating of steam boilers, and to evaporting, heating,
and boiling purposes generally.
Now according to this present Invention, the application of the
principle of utilization of the waste heat from coke ovens is further
developed, all as herein-after described.
The main feature of this Invention consists in the mixing of the gases
or gaseous products of combustion proceeding from the coke ovens with
the whole or a part of the crude lighting gas which is distilled and
proceeding from the material contained in a gas retort or retorts heated
by a part of the coke oven heat, the consequence of this commingling
being that the heated products of combustion after having heated the
retort ignite the gas evolved in and proceeding from the retort. The
gas produced in the retorts passes wholly or partly into the interior of
the kiln or other chamber where the heat is required, commingling with
and being ignited from the gas or hot products of combustion from the
coke ovens (and if applied to the burning of lime, cement, or bricks, or
other materials or objects, if desired, with the heated gases resulting from
fuel mixed with the said materials or objects), and with atmospheric air
admittted in regulated quantities, as required, by means of ventilators,
dampers, or other well-known appliances for such purposes, the result of
such arrangement being a perfect control over the heat required for any
of the desired heating, evaporating, or boiling purposes. Part of the
gas from the retort may be utilized for ordinary lighting and heating.
purposes.
For burning lime, cement, bricks, or other material and objects, the
coke ovens and retorts are, by preference, arranged symmetrically round
the kiln. A small chimney provided with damper may be connected to
each coke oven to give draught when required.
This Invention is also applicable to the utilization of the heat from
any other coke oven or ovens, such as ordinary coke ovens with per-
manent bottom or coke ovens with sliding or falling bottom of other
description than herein-before referred to.
One mode of heating the retorts is by making holes or perforations
through the arched top or crown of the coke oven, the heat then passing
through such holes, or the retort may form the crown or upper part of
the coke oven..

page_text: Instead of as just described serving to setting alight and commingling
with the gases from the retort, the hot products of combustion after
having heated the retort may pass off and be used for drying purposes,
such as for drying bricks or other objects or materials before burning
them..
And having thus described the nature of this Invention, I declare
that I claim, the combination of coke ovens and gas retorts so that the
latter are heated by the waste heat from the former, all substantially
as and for the herein described heating, burning, evaporating, and
drying purposes set forth.
In witness whereof, I, the said Peter Jensen, have hereunto set my
hand and seal, this Eighteenth day of August, in the year of our
Lord One thousand eight hundred and seventy-three..