Year: 1886

page_text: Date of Application, 9th June, 1886.
Complete Left, 18th Jan., 1887.
Complete Accepted, 10th May, 1887.
I, JAMES HOLDEN of Hermon Hill Wanstead in the County of Essex Engineer do
hereby declare the nature of this invention to be as follows:-
My improvements consist in so arranging the various parts of the injector that I
deliver air in an annular current around a jet or spray of liquid fuel, such air current
being induced and varied by an independent steam supply which can be regulated
independently of the liquid fuel supply.
In some cases I arrange my injector so that a rod can be applied from the back
thereof for the purpose of cleaning out the delivery orifice.
TONGUE & BIRKBECK,
34, Southampton Buildings, London, E.C.,
Agents for the Patentec.

page_text: I, JAMES HOLDEN of Hermon Hill Wanstead in the County of Essex 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:
My improvements consist in so arranging the various parts of the injector that I
deliver air in an annular current around a jet or spray of liquid fuel such air current
being induced and varied by an independent steam supply which can be regulated
independently of the liquid fuel supply.
In some cases I arrange my injector so that a rod can be applied from the back
thereof for the purpose of cleaning out the delivery orifice.
In carrying out my invention I arrange on the outside of the barrel and behind the
nozzle of the injector through which the liquid fuel and steam are discharged into the
furnace, a hollow ring into which I admit an independent supply of steam which issues
through perforations or nipples in the direction of the furnace.
And in order that my said invention may be fully understood I will now proceed
more particularly to describe the same with reference to the accompanying drawings.
The letters throughout the drawings indicate corresponding parts.
Figure 1 is a vertical section Figure 2 a side elevation Figure 3 a front elevation
and Figure 4 a back elevation of the injector. A is the barrel of the injector, to
which the liquid fuel is conveyed through the branch pipe B the quantity being
regulated by means of a suitable cock. C is a coned hollow spindle through which
steam is supplied from the branch pipe D, the quantity being regulated by a suitable
cock. E is the hollow ring to which steam is admitted in regulated quantities from
the branch pipe F, it is secured to the barrel A by the nozzle G so arranged that
the branch pipe F and the nozzle G can be turned round to any angle, H. H. are the
nipples through which jets of steam issue, inducing currents of air as indicated by the
arrows, the top and bottom jets being directed at such an angle that they meet and
cross each other and the issuing stream of liquid fuel in front of the nozzle G causing
very minute division of the liquid fuel. I is a thumb screw and Ka bridge piece
pivoting at L so that when the thumb screw I is slacked back it can be raised or
lowered clear of the fuel passage and a rod can then be introduced for the purpose of
clearing out the delivery orifice.
Where it is not necessary for the injector to lift the liquid fuel I sometimes modify
the details by omitting the coned hollow spindle C see Figures 5. 6 and 7.
In both cases I arrange the top and bottom jets of steam to issue from the ring at
such an angle that they meet and cross each other and the issuing stream of liquid
fuel in front of the nozzle in such a manner that there is very minute breaking up of
the liquid fuel, the other jets may be directed parallel to the barrel of the injector or
at any angle required by the form and arrangement of the furnace.

page_text: I make use of varied forms of nozzles to suit the different kinds of furnaces to
which the injector may be applied see Figures 8. 9 and 10.
The number of nipples or jet holes in each case may be varied.
In. Figure 5 I show a method which I sometimes adopt of fixing my injector to
some forms of furnaces and to which I some times fit a regulator for varying the
admission of air 1 also adopt this method when making use of heated air.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. The use and application of the hollow ring E fitted with nipples or jet holes and
an independent steam supply in combination with a liquid fuel injector substantially
as described and represented in Figures 1. 2. 3 and 4 of the drawings hereto
annexed.
2. The arrangement and application of the hollow ring E in combination with the
injector A substantially as described with reference to Figures 5. 6 and 7 of the
drawings hereto annexed.
3. The improved general arrangement construction and combination of parts
forming the improved injector for feeding furnaces with liquid fuel substantially as
described with reference to the drawings hereto annexed.
4. The herein described method of inducing an annular current of air around a jet
or spray of liquid fuel and steam (or liquid fuel alone) such current being induced
and varied by an independent steam supply substantially in the manner and for the
purpose herein before described and represented in the drawings hereto annexed.
TONGUE & BIRKBECK,
34, Southampton Buildings, London, W.C.,
Agents for the Patentee.