Improvements in Gas Fired Furnaces.
Year: 1898

page_text: Date of Application, 16th May, 1898
Improvements in Gas Fired Furnaces.
I, FREDERICK JOSIAH JONES, of Summer Lodge, New Street, Kenilworth, in
the County of Warwick, Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to improvements in gas furnaces solely of that class in
which the gas is generated within the structure of the furnace itself, and yields
a residuum of coke in place of ashes, and consists essentially in constructing
furnaces with a gas combustion chamber below the furnace bed, in which
chamber gas retorts are placed. The gas distilled in these retorts is admitted
into the combustion chamber & heats the retorts themselves, while the
radiated heat from this operation and any surplus gas, supply heat for
working the furnace above. To start working, the retorts are filled & the fuel
ignited inside them, and a little air is admitted allowing partial combustion to
take place until they are hot enough to distil their own contents. Then as the
surrounding brickwork heats up, the retorts become enveloped in their own gas
flame and little or no air being now admitted to the interior of the retorts, simple
distillation takes place with the usual residuum of coke.
The proceedure of charging and drawing the retorts is exactly the same as in a
gas works, except that the period of distillation is lengthened to drive out all
the hydro carbon from the coke, unless the surplus gas is required for illuminating
purposes.
Dated this 16th day of May 1898
QUALI DEI DI MUITIONIN
Improvements in Gas Fired Furnaces.
I, FREDERICK JOSIAH JONES, of Summer Lodge, New Street, Kenilworth, in
the County of Warwick, Civil 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 fired furnaces solely of that class
in which the gas is generated within the structure of the furnace itself and yields
a residuum of coke in the place of ashes, and consists essentially in constructing
furnaces with a gas combustion chamber below the furnace bed, in which
combustion chamber gas retorts are placed. The gas generated in these retorts,
or some of them, is admitted to and burnt in the combustion chamber, heating
the retorts themselves, while the waste heat from this operation, and any surplus

page_text: gas, supply heat for working the furnace above. To start working the retorts
are filled and the fuel ignited inside them, a little air being admitted allowing
partial combustion to take place until they are hot enough to distil their own
contents. Then as the surrounding brickwork heats up, the retorts become
surrounded by their own burning gases, and little or no air being now admitted
to the interior of the retorts, simple distillation takes place with the usual residuum
of coke. The procedure of charging and drawing the retorts is the same as in
a gas works, except that the period of distillation is lengthened to drive out all
the hydrocarbons & harden the coke, except when some of the retorts are used for
making illuminating gas, & in this case the gases are led away and treated in
the usual manner. The retorts making illuminating gas are heated by the gases
from the other retorts in the same combustion chamber, no air being allowed to
enter them.
Fig. 1 is a longitudinal section & Fig. 2 a cross section of the furnace.
RRR are the retorts, B is the combustion chamber & C the furnace in which
is placed the article to be heated. A A A are the ports to admit the gases to B
& K admits air for combustion. L is the port by which the products of com-
bustion are admitted to C. In the middle retort, G is the exit for illuminating gas
when A is closed. F F F are air flues to admit air to the retorts through the
perforated bottoms.
H the retort door. N the air flue door.
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:
1. In gas fired furnaces the arrangement of retorts placed in a combustion
chamber below the furnace bed, in which are burnt as much of the retort gases
as are required to heat the retorts & furnace placed above the combustion chamber
and connected therewith by flues or passages.
2. In gas fired furnaces the arrangement of retorts in a combustion chamber
below the furnace bed, the gases from which retorts are not consumed in the com-
bustion chamber, but led away for other purposes.
Dated this 15th day of February 1899.