A New Method of Consuming or Burning Smoke in Steam and other Boiler Furnaces or Flues, and in Apparatus connected therewith.
Year: 1890

page_text: Date of Application, 20th Feb., 1890
Complete Specification Left, 20th Nov., 1890-Accepted, 20th Dec., 1890
PROVISIONAL SPECIFICATION.
A New Method of Consuming or Burning Smoke in Steam and
other Boiler Furnaces or Flues, and in Apparatus connected
therewith.
We, WALTER CHAPMAN WOOD of Moorside, Heaton near Bolton. Manufacturer,
and CHARLES WHITAKER of Spotland Bridge, Rochdale, Cotton Spinner, both in the
County of Lancaster, do hereby declare the nature of our said invention to be as
follows:-
This invention relates to a new method of consuming or burning smoke in steam
and other boiler furnaces or flues and in apparatus connected therewith, and consists
in means whereby petroleum, creosote, volatile, or other suitable burning oils are
injected into or over the furnace or fire with a mixture of atmospheric air to aid
ignition when coming in contact with the fire.
In the furnace mouth we mount any convenient number of air pipes leading from
the outside to a point over the fire. Through the air pipes pass other pipes conveying
petroleum, creosote, volatile, or other suitable burning oils from a lank or reservoir
disposed at such a height as to allow of the saine being fed by gravity. The pipes
conveying oil are of a reduced diameter to allow a cavity between their outer diameter
and the internal diameter of the air pipes for the passage of atmospheric air. A jet of
steam is employed to create a vacuum in the air pipes to assist the flow of atmospheric
air. The amount of steam and oil is regulated by suitable taps or valves.
Dated the 19th February 1890.
EDMUND CHADWICK,
A gent.
COMPLETE SPECIFICATION.
A New Method of Consuming or Burning Smoke in Steam and
other Boiler Furnaces or Flues, and in Apparatus connected
therewith.
We, WALTER CHAPMAN WOOD of Moorside, Heaton near Bolton, Manufacturer,
and CHARLES WHITAKER of Spotland Bridge, Rochdale, Cotton Spinner, both in the
County of Lancaster, do hereby declare the nature of our said 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 a new method of consuming or burning smoke in steam
and other boiler furnaces or flues and in apparatus connected therewith, and consists
in means whereby petroleum, creosote, volatile, or other suitable burning oils are
injected into or over the furnace or fire with a mixture of atmospheric air to aid
ignition when coming in contact with the fire.
In the furnace mouth we mount any convenient number of air pipes leading from
the outside to a point over the fire. Through the air pipes pass other pipes conveying
petroleum, creosote, volatile, or other suitable burning oils from a tank or reservoir
disposed at such a height as to allow of the same being fed by gravity. The pipes
conveying oil are of a reduced diameter to allow a cavity between their outer diameter
and the internal diameter of the air pipes for the passage of atmospheric air. A jet of
steam is employed to create a vacuum in the air pipes to assist the flow of atmospheric
air. The amount of steam and oil is regulated by suitable taps or valves..
Fig. 1, Sheet 1, is a front elevation of a steam boiler with one modification of our
invention applied.
Fig. 2, Sheet 2, is a front elevation of a modification of our invention.

page_text: Fig. 3 is a part longitudinal sectional elevation of a steam boiler and furnace with
our invention applied to operate above the fire.
Fig. 4 is a part longitudinal sectional elevation of a steam boiler and furnace with
our invention applied to operate in the combustion chamber beyond the bridge.
Fig. 5 is a front view of Fig. 4.
Fig. 6 is a part longitudinal sectional elevation of a steam boiler and furnace with
another modification of our invention applied to operate behind the bridge.
Fig 7 is an enlarged sectional elevation of our improved nozzle for injecting
petroleum, creosote, volatile, or other suitable burning oils or hydro-carbons in the
state of vapour formed by and mixed with a blast of steam and atmospheric air, and
Fig. 8 is a plan of Fig. 7 through line A' B¹.
In all the figures the same letters are employed to indicate corresponding parts.
A is the boiler front; B the boiler shell; the flues or furnaces; D the fire-
doors; E the fire-bars carrying the fire; F the bridge, and G the tank or cistern
containing petroleum, creosote, volatile, or other suitable burning oil or hydro-carbons.
In each furnace mouth or flue D we mount the air pipes H leading from the outside
to a point over the fire as shown in Fig. 3, through or into which pipes pass the steam
pipes I and the pipes J conveying petroleum, creosote, volatile, or other suitable
burning oil or hydro-carbons from the tank or cistern G conveniently fixed above the
furnace mouth to allow of the same being fed by gravity. The pipes I and J are
connected, as shown in Fig. 7, near the outlet of the steam pipe I to form our
improved nozzle P to inject a compound mixture of steam and oil of the description
before mentioned or other bydro-carbons in a vaporized form. The pipes I and J are
of a reduced diameter to the air pipes H to allow of a cavity between their outer
diameters and the internal diameter of the air pipes H for the passage of atmospheric air.
The jet of steam is employed to create a vacuum or a partial vacuum in the pipes H to
assist the flow of atmospheric air, also to blow the vaporized oil or hydro-carbons over
or above the surface of the fire to bring the same in contact with the smoke and flame
from the same, which instantly ignites and consumes smoke as it is generated from the
coal on the fire. Steam is conveyed to the steam taps K by the pipes L from the boiler.
The steam pipes I are connected to the taps K as shown; the amount of steam being
regulated by operating the handles M. Petroleum, creosote, volatile, or other suitable
burning oils or hydro-carbons is conveyed from the tanks or cisterns G to the taps N
by the pipes O; the latter being provided with the taps or valves P to shut off the oil
or hydro-carbon in case of repairs, which is very essential owing to the searching or
flowing nature of the said oils or hydro-carbons. Oil or hydro-carbon is conveyed
from the taps N by the Y pipes Q, from which branch the pipes J to their respective
nozzles. The taps K and N are each provided with the handles M and S respectively
to allow of them being operated independently of each other to regulate the quantity
of steam and oil or hydro-carbons at will. The apparatus can be worked continuously
or intermittently as desired or necessary according to circumstances. In case of
working intermittently we provide the inlet of each air pipe H with the flap or
cover T made in halves to clip the steam and oil pipes as shown in Fig. 8 to minimise
and reduce or prevent as near as possible the inrush of atmospheric air when steam
and oil or hydro-carbon are shut off. When steam and oil or hydro-carbons are
being injected the attendant removes or swivels the flap or cover T from the inlet
of the pipe H to admit atmospheric air, and closes the same when the apparatus is
stopped.
In another modification the air pipes H and nozzles P are carried under the fire-
bars E and through the bridge F to the combustion chamber V for the purpose of
injecting steam and oil or hydro-carbons in a vaporized form to mix with and ignite
the gases as they pass over the bridge F as shown in Figs. 4 and 5 to consume smoke
generated or given off by the fire.
If desired the air pipes H can be of such a length as to pass through the bridge
only to ensure of heated air from under the fire-bars E being mixed with steam and
oil or hydro-carbon in a vaporized form conveyed by the pipes I and J, which are
carried under the fire-bars E as shown in Fig. 6.

page_text: Having thus stated the nature of our invention and described the mode of per-
forming the same, we would have it understood that we do not confine ourselves to
the precise details or configuration of the parts we have shown and described, which
are obviously capable of considerable variation according to the class of furnace
supplied without departing from the principle of our invention; also that we are
aware that hydro-carbons have been employed for heating steam and other boilers to
which we lay no claim, but what we claim and desire to be secured to us by Letters
Patent is:
1. For consuming or burning smoke in steam and other boiler furnaces or flues the
use or employment of petroleum, creosote, volatile, or other suitable burning oils or
hydro-carbons in the state of vapour formed by and mixed with a blast of steam and
air, substantially as described.
2. The use and construction of the injector or nozzle P consisting of the steam
pipe 1 and oil pipe J, for the purpose specified, substantially as described and as
shown in Fig. 7.
3. The general construction and arrangement of apparatus substantially as herein-
before described and illustrated in the accompanying drawings in and by which
petroleum, creosote. volatile, or other suitable burning oils or hydro-carbons is formed
into a state of vapour by being mixed with steam and air for burning smoke in steam
and other boiler furnaces.
Dated the 12th November 1890.
EDMUND CHADWIND,
Agent.