Year: 1893

page_text: Date of Application, 20th Mar., 1893
Complete Specification Left, 19th Dec., 1893-Accepted, 3rd Feb.. 1891
1, FREDERICK JOSIAH CLINCH-JONES 61 Goldington Road Bedford Engineer
do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in gas furnaces, for metallurgical and
other purposes, other than those fired by producers in which the coal is burnt to
ash or clinkers, and consists essentially in placing large gas retorts in juxtaposition
with the furnace, and in arranging them so that the retort gases while doing their
work in the furance, heat the retorts themselves. And I find it often convenient
to admit a limited amount of air to the interior of the retorts, sufficient for the
combustion of the gases or a part of them, but not enough to attack the solid
carbon. But when require a high temperature in the furnace or retorts, I admit
more air and I find that by doing so I can improve the quality of the coke although
1 destroy a portion of it. As an example of the way in which carry out the
invention will take an ordinary rolling will farmure. 1. construct a pair of large
brick retorts with a roofed space between them, so that they constitute the sides of
the furnace and the space the furnace itself, and 1 provide several opening in the
walls of the retorts for the gases to issue into the furnace. The combustion of the
in the furnare and interior of the retorts officts the distillation of the coal
and production of coke. For furnaces over ten feet long I divide the retorts in
the centre so that the coke is drawn at each end. And I so time the charging and
drawing of these retorts that they shall work in regular rotation & keep an even
quality of gas. For firing boilers, kilns &c. I employ the same method, utilizing
the body of the furnace as a chamber for effecting perfect combustion of the gases
before use & thus ensuring freedom from smoke. I work the furnace either with
natural or forced draught according to local circumstances and use hot or cold air
for the purpose according to the temperature required, speed of working and
quality of coal used.
Dated this 20th day of March 1893.
FREDERICK JOSIAH CLINCH-JONES.
COMPLETE SPECIFICATION.
Improvements in Gas Furnaces.
1, FREDERICK JOSIAH CLINCH-JONES of 61 Goldington Road Bedford
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 :-
This invention relates to improvements in gas furnaces, for metallurgical and
other purposes, other than those fired by producers in which the coal is burnt to
ush or clinkers, and consists essentially in placing large gas retorts in juxtaposition
with the furnace, and in arranging them so that they shall intercept as much as
possible of the radiant furnace heat produced by the combustion of their own gases
within the furnace. As an example of the way in which I carry out the invention
I will take an ordinary rolling mill furnace. I construct a pair of large brick
retorts with a roofed space between them, so that they constitute the sides of the
furnace, and the space between, constitutes the furnace itself, and I provide
I Puis el

page_text: openings in the walls of the retorts for the gases to issue into the furnace, when
combustion takes place.
In many works space is too limited to place the retorts at the sides of the
furnaces, and I then construet them either under the furnac's, or at one end, or, as
shewn in the accampanying drawings, they can with great advantage be placed on
the roof of the furuaces, when I put as many as are necessary to produce the
required amount of gas.
Fig. is a longitudinal section of a furnace A, and Fig. 2 a plan, showing
plainly one of my methods of placing the retorts B. B. B. B on the roof of the
same.
I find a capacity of about thirty cubic feet per retort to be very suitable for
average work, but they may be larger or smaller according to requirements.
To start a furnace about half a charge is put into each retort, and lighted. The
fire spreading through the contents of the retorts, heats the brickwork, so that the
following charges ignite spontaneously. When the working heat has been got up
place a full charge in each retort, and the months having been made gas tight, a
regulated amount of air, or air and steam, is admitted by either natural or fareed
draught, to the interior of the retorts at the orifices C. C.
The gases this generated flow down through the charge, and pass out through
the openings fornied in the bottoms of the retorts, into the furnace A, where
combustion takes place. Secondary air for this purpose being adimitted at 1).
To work these furnaces satisfactorily, it is necessary to continue the admission of
air, or air and steam, to the retorts, and by using a steam jet blower, or other
forced draught, I am able to work with the usual outlet dampers nearly closed, and
so confine inside the furnace A, the greater part of the heat arising from the
combustion of the retort gases therein, and the major portion of this heat is
absorbed by the contents of the retorts, Thus when once the full working heat
has been got up, I am enabled to proceed with a very slight admission of air, or air
and steam, to the retorts, and so make a gas of high calorific value, for heating the
contents of the furnace A.
When however an oxidising flame is wanted I admit more air, or air and steam,
to the retorts, and so produce the effect without requiring a large volume of
secondary air at D.
When however it is not convenient to use forced draught, chimney draught can
be employed, and the production of gas is then regulated by the ordinary flue
dampers.
For firing boilers, kilns, and other work of the kind, I employ the same methods,
utilizing the body of the furnace for the combustion of the gases before use, and
thus ensuring freedom from smoke.
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.
First. In furnaces for use substantially as in the manner described, the formation
of carbonizing retorts as a portion of the furnace structure, constituting either the
sides, bottoms, ends, or roofs of the furnaces, or any portion or combination of them
that may be most suitable in each case for the interception of the radiated furnace
heat by the retorts, and the consequent production of inflammable gases from their
carbonaceous contents.
Second. In furnaces for use substantially as in the manner described, tho
utilization of the radiated heat arising from the combustion of the retort gases in
the furnaces, for henting the retorts themselves, as constructed according to the
previous claim.
Dated this 18th day of December 1893.
FREDERICK JOSIAH
CLINCHI-JONES,
61, Goldington Road, Bedford.