An Improved Appliance for Injecting Liquid and Gaseous Fuel into Furnaces.
Year: 1890

page_text: COMPLETE SPECIFICATION.
[Communicated from abroad by WILLIAM JAMES MACDONAGH, Engineer, RICHARD
Rook, Engineer, WILLIAM WOOD, Gardener, CHARLES SMITH WILKINSON,
Geologist, JAMES PLUMMER, Ironmonger, and ROBERT BLISS WILKINSON, Stock
and Station Agent, all of 137, Elizabeth Street, Sydney, in the Colony of
New South Wales.]
An Improved Appliance for Injecting Liquid and Gaseous Fuel
into Furnaces.
I, HENRY EDWARD NEWTON, of the Office for Patents, 6 Bream's Buildings,
Chancery Lane in the County of Middlesex, Patent Agent, 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 :-
The apparatus consists of an outer cylinder with a coneshaped nozzle, an inner
adjustable cylinder working freely through a gland in the rear of the outer cylinder,
and also having a coneshaped nozzle, a central spindle the rear end of which is
threaded and screws into a tapped screw cap or head at the rear of the inner adjustable
cylinder and having a tapered point or end, the end acting as a valve, a cone-shaped
spreader or pulveriser, and a directing nozzle. The outer cylinder is in direct com-
munication, by means of a branch, with the steam supply; the inner adjustable
cylinder is in communication also, by means of a branch, with the supply of fuel.
Arins project laterally from the steam cylinder and from the fuel cylinder, and a slow
motion screw works in the arms to regulate the position of the parts in respect to one
another, being locked by a milled nut on the screw. The supply of fuel is regulated
by the central spindle. The liquid fuel, as it issues from the nozzles, is broken up
into finely divided spray by the spreader or pulveriser, and the spray is directed
forward into the furnace by the directing nozzle in a convenient form for attaining
perfect combustion.
In the accompanying drawing,
Fig. 1 is a longitudinal section of the apparatus.
Fig. 2 is an external plan view of the apparatus, shewing the lateral arms or
standards and the adjusting screw for regulating the steam supply.
Fig. 3 is a cross section, on the line 1, 2, of Figs. 1 and 2.
Fig. 4 is a sectional view shewing a modification of the spreader or pul-
veriser; and
Fig. 5 is an end view of Fig. 4.
A is the steam cylinder, B the nozzle; which has a double cone; and C the gland
through which the fuel cylinder D slides freely. E is the cone shaped nozzle of the
fuel cylinder, which is formed at its rear end with lateral projections, which serve
to centre the fuel cylinder in the steam cylinder. F is the head screwed into the
rear end of the fuel cylinder. The head F is tapped to receive the screwed end
of the central spindle G, the rear end of which terminates in a hand wheel. The
central spindle, when adjusted in position, is secured by a lock nut G'. The forward
end G of the spindle G is made conical or tapered. Steam is admitted to the
steam cylinder A by the branch pipe H, and fuel to the inner cylinder D by the
branch pipe J. Guide studs c c c are placed upon the central spindle for the purpose
of keeping the same concentric with the central axis of the apparatus. K K₁ are
lateral arms that carry the adjusting screw L, the arm K being attached to the
cylinder D, and the arm K' to the cylinder A. As the coned ends of the several
parts are advanced or withdrawn, so the supply of steam and fuel is regulated. Mis
the spreader or pulveriser, which may be attached either to the end of the central
spindle, as seen in Figure 1, or to the mouth of the nozzle B, as seen in Figs. 4
and 5.

page_text: As the steam and liquid fuel issue from their respective orifices, they strike against
the pulveriser M, and the two streams are broken up, and caused to commingle,
before they are projected into the furnace, and more perfect combustion than heretofore
is thereby ensured.
It is, however, desirable, to effect perfect combustion, that the fluid fuel should
be projected well into the furnace, and not be allowed to spread laterally by the action
of the pulveriser immediately on leaving the nozzle.
For this purpose, the nozzle B is made with a double cone, as shown in the
drawing, the part B' serving to give the stream of fuel a forward direction.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what I
claim is :-
1. In appliances for injecting fluid fuel, the combination of the steam cylinder A,
the adjustable fuel cylinder D that slides freely through the gland C, the contral
a tjustable spindle G, means for adjusting the relative position of the cylinders A
and 1, means for pulverising or breaking up the streams of steam and fuol, and
means for giving a direction to the fuel as and for the purpose set forth.
2. In appliances for injecting fluid fuel, the combination with steam and fuel
cylinders and a contral spindle, of a pulveriser and conical directing nozzle as and for
the purpose set forth.
3. In appliances for injecting fluid fuel, and consisting of a steam cylinder and a
fuel cylinder, with or without a central spindle, the combination with a pulveriser, of
a conical directing nozzle, ns and for the purpose set forth.
4. The apparatus for injecting fluid fuel into furnaces as herein shown and
doscribed.
DLS
1
NEWTON & SON,
Agents for the Applicant