An Improved Furnace for the Incineration and Destruction of House Garbage, Town Refuse, and such like Noxious Matters.
Year: 1890

page_text: Date of Application, 4th Nov., 1890-Accepted, 6th Dec., 1890
An Improved Furnace for the Incineration and Destruction of House
Garbage, Town Refuse, and such like Noxious Matters.
1 EDWARD WILLIAM CRACKNELL of Bond Street Chambers George Street in
the City of Sydney and Colony of New South Wales Consulting Engineer and
Architect 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 has reference to an improved furnace for the incineration and
destruction of house garbage, town refuse waste products of factories and such like
noxious matters the operations of which furnace in the treatment of such matters may
be carried on without causing a nuisance by the liberation of noxious gases or offensive
odours. By this invention I am enabled to avoid or minimise the injury caused by
wet or damp substances coming into contact with hot bricks or metal of the furnace ;
to prevent the issue of thick smoke and vapour usually caused in the burning of damp
substances; and to prevent the escape of noxious vapours gases or odours.
This improved furnace for the incineration and destruction of house garbage town
refuse &c. is constructed with a furnace with ordinary fire bars. doors &c. and above
or in connection with which is a steam jacketted drying chamber. From the interior
of this drying chamber a pipe for the gases driven off the drying materials is led
to a pipe in which a current of air (caused by a steam injector or by the action of a
fan or blower) is passing to and under the fire bars of said furnace.
But in order that I may be clearly understood reference will now be made to the
drawings herewith in which
Figure 1 is a longitudinal section of a furnace constructed according to this
invention. Figure 2 is a cross sectional elevation of the same while Figures 3 and 4
are sectional plans of the upper and lower parts of same respectively. A is the
furnace. B the fire bars. C the drying chamber. D the steam jacket. E furnace
door. F chamber sliding door. G hinged door. H steam pipe. I and J discharge
doors. K escape pipe. Lair pipe to furnace. Mash-pit. N chimney stack. O brick
arch. P fan or air blower. The steam jacket D is supplied with a feed pipe and all
necessary mountings.
The material to be burnt is fed into the chamber C through the door F and is dried
in said chamber by the heat derived from the jacket in which steam is generated by
the heat from furnace A led over arch O or it may be supplied with steam from a
separate boiler. As the material dries it is pushed through the door G into furnace A
on to the hearth behind the fire bars and as it there is burnt or parts burnt and parts
melted the residue may be withdrawn through door I and the slag and molten sub-
stances may be run off through door J. The gases and vapours rising from the
materials in chamber C pass upward in pipe K through which they travel with the
current to ash-pit M and are burnt in the fire on bars B together with the air which
is drawn by jet end of pipe from fan P from the receptacle for untreated material or
which may be so drawn from such untreated material by means of a steam jet. The
products of combustion from the furnace pass up over arch O to the chimney N. The
gases and vapours are prevented from entering downwards into the furnace by
the door G which is, owing to its weight and hang, normally in a closed position.
I would have it understood that I do not confine myself to the precise details
herein set forth and described as these may be considerably varied without departing
from the nature of this invention.

page_text: Having now particularly described and explained the nature of my said inven-
tion and the manner in which the same is to be performed I declare that what I
claim is
First. An improved furnace for the incineration and destruction of house garbage
town refuse and such like noxious matters the essential features of which are the fire
bars or hearth the steam jacketted drying chamber and the air pipe conveying a
current of air to the ash pit substantially as herein described and explained.
Second. In an improved furnace of the class set forth the combination and
arrangement with a furnace such as A having firebars such as B of the chamber such
as C having jacket such as D and a self-closing door such as G above an entrance to
said furnace and of an escape pipe such as K connected to an air pipe such as L
leading to said furnace substantially as herein described and explained and as
illustrated in the drawings.
Third. The combination and arrangement together of the mechanical parts forming
an improved furnace for the purposes set forth substantially as herein described and
explained and as illustrated in the drawings.
Dated this Eighteenth day of September One thousand eight hundred and
E. W. CRACKNELL.