An Improved Method for Destroying Gases in Towns' Refuse Destructors or other Furnaces Generating Heat.
Year: 1891

page_text: Date of Application, 4th Dec., 1891
Complete Specification Left, 27th Aug., 1892-Accepted, 5th Nov., 1892
PROVISIONAL SPECIFICATION.
An Improved Method for Destroying Gases in Towns' Refuse
Destructors or other Furnaces Generating Heat.
I HERBERT UTTLEY of 50 England Street, Leeds in the County of York
Refuse Destructor Manager do hereby declare the nature of this invention to be
as follows:
An air cavity or trunk made of cast steel or of chilled cast iron or of any other
suitable material and of channel or box girder form.
These trunks are placed at the sides of the furnace and they thus dispense with
the otherwise necessary fire brickwork up the furnace sides.
The object of these air cavities or trunks is to introduce air or oxygen at the
back of the furnace grate, a suitable opening being placed near the end of the
trunks for this purpose. The oxygen increases the rate of combustion and also
makes it more complete, and so destroys the gases.
These air cavities are provided with suitable inlet valves to regulate the quantity
of air admitted, thus giving means whereby the greatest possible advantage may
be obtained from their use.
The temperature of the air during its passage through the trunks is raised
considerably by reason of the trunk being in contact with the furnace, thus the
air comes in contact with the flames while at a high temperature.
These air cavities or trunks may be reversible so that when the innermost end
becomes damaged by the excessive heat in the furnace, they may be turned end for
end and thus be as good as new.
The aforesaid air cavities are especially adapted for the purpose of destroying
gases in towns refuse destructors and for heat generating furnaces generally, but
they may be applied to any furnace.
Dated this 3rd day of December 1891.
HERBERT UTTLEY.
COMPLETE SPECIFICATION.
An Improved Method for Destroying Gases in Towns' Refuse
Destructors or other Furnaces Generating Heat.
I HERBERT UTTLEY of No. 50 England Street, Leeds in the County of
York, Refuse Destructor Manager 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 an air cavity or trunk made of cast steel, chilled cast iron
or of any suitable material and is of channel or box girder form.
These trunks are placed at the sides of the furnace and they thus dispense with
the otherwise necessary firebrick up the furnace sides.
The object of these trunks is to introduce air or oxygen at the back of the
furnace grate, a suitable opening being placed near the inner end of the trunk for
this purpose. The oxygen thus introduced increases the rate of consumption and
makes it more complete and so destroys the gases.
The temperature of the air in its passage through the trunks or cavities is raised
considerably by reason of the trunks being in contact with the furnace, thus the
air meets the flames while at a very high temperature.
These trunks or air cavities may be reversible so that when the innermost ends
become damaged by the excessive heat in the furnace they may be turned end for
end and thus be as good as new.

page_text: The aforesaid air cavity is specially adapted for the purpose of destroying the
gases in town's refuse destructors but it is applicable to heat generating furnaces
generally.
My invention will be fully understood by reference to the drawings which
accompany this Specification in which :-
Figures 1. 2 & 3. are a front view, transverse section & a plan respectively
shewing the air cavities as applied to my improved construction of framework for
rocking or stationary fire-bars of town's refuse destructors described in Letters
Patent granted to me and dated 18th Octr. 1890, No. 16,569.
Figs. 4. 5. 6. 7 & 8 are enlarged views of the air cavities or trunks.
A. A. are the furnace doors, B. B. the front dead place, C. C. the back dead
plate, D. D. the bearers, E. E. the rocking fire-bars, F. F. the rocking levers,
G. G. the air cavities or trunks.
It will be seen that these trunks G. G. extend from the front dead plate B. B. to
the back dead plate C. C., or in a furnace fire grate provided with a bridge, they
extend to the said bridge.
In the upper and lower flanges of the cavities are provided air outlets H & I at
suitable distances from the ends while at K. K. are inlet valves which regulate the
quantity of air or oxygen to be admitted so that only sufficient air is drawn in to
ensure rapid and complete combustion of the gases.
The air admitted at the inlet valves becomes heated in its passage up the trunks
and comes in contact with the flames and gases while at a very high temperature
as it issues from the outlet at H.
The object of the outlet I in the lower flange of the cavity is so that when the
innermost end is more or less injured by the excessive heat, the trunk may be
reversed or turned end for end and thus be as good as new.
In horizontal or nearly horizontal furnaces these outlets are provided in the top
and bottom flanges at both ends so that they may be quite interchangeable, the
outlets not in use being stopped by being built over with fire-bricks.
Figs. 6 & 7 are alternative sections of the air cavities but they may be of any
suitable form.
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. The construction of air cavity G. G. made of cast steel, chilled cast iron or
other suitable material, of channel or box girder or trunk shape for the purpose of
admitting air or oxygen to destroy the gases in town's refuse destructors and other
furnaces substantially as described.
2. Providing the said air cavity with an outlet at each end i.e. at H & I. so
that when one end is worn the trunk may be reversed and so prolong its life,
substantially as described in the accompanying Specification and shewn in the
drawings herewith.
3. The provision of suitable inlet valves, regulating the admission of the proper
proportion of air or oxygen for ensuring the most rapid consumption or most
complete combustion of the gases in the furnace.
Dated this 26th day of August 1892.
HERBERT UTTLEY.