Improvements in Apparatus for Spraying and Burning Liquid Fuel for Heating Steam Boilers or for other Purpose.
Year: 1887

page_text: Date of Application, 21st Jan., 1887
Complete Left, 10th Oct., 1887
Complete Accepted. 29th Nov., 1887
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Spraying and Burning Liquid Fuel
for Heating Steam Boilers or for other Purpose.
1, JAMES YATE JOHNSON of 47 Lincolns Inn Fields in the County of Middlesex
Gentleman do hereby declare the nature of this Invention which has been communi-
cated to me from Abroad by Henry Julius Drory of I. Burgring 13 Vienna in the
Empire of Austria to be as follows:-
The apparatus constructed according to this Invention has for its object the injection
and regulation of the injection of tar or other liquid fuel into a furnace or place of
consumption in such a manner that complete combustion of the liquid fuel is attained
without the production of smoke. The apparatus consists of a hollow body preferably
of cast or wrought iron having two inlets leading into two hollows or chambers within
the said body. One of these inlets and one of these chambers with which it com-
municates are for the admission of the tar or other liquid fuel whilst the other inlet
and chamber are for the admission of dried steam or heated air. Between the two
chambers is an opening in which is fixed an inner coned nozzle opening from the
liquid fuel inlet chamber and passing through the steam or air inlet chamber and
entering a front and outer coned nozzle which opens from the steam or air inlet
chamber. The tar or other liquid fuel enters the inlet and chamber therefor and runs
into the inner nozzle and at the end thereof comes into contact with the steam or air
entering through the inlet and chamber therefor and passing out by the front and
outer nozzle and the liquid fuel is driven forward through the outlet opening of the
last named nozzle in the form of spray.
In the axis of the inner nozzle is situated a moveable needle by the moving or
screwing of which backwards and forwards the flow of tar or liquid fuel at the point
of exit can be regulated and by which also any obstruction which at any time may
exist at this point can be removed.

page_text: The distance between the opening of the inner nozzle and the opening of the outer
and front nozzle can be regulated with the view of obtaining the greatest possible
intensity of combustion. This is effected by making the outer and front nozzle
screw or fit so that it can be moved longitudinally in and out from the body of the
apparatus.
The spray produced by the apparatus may be introduced into any suitable form of
furnace but preferably it is impinged upon a wedge shaped piece with its acute anglo
presented to the incoming spray so as to break it up and divide it.
Dated this 21st day of January 1887

page_text: Improvements in Apparatus for spraying and Durning Liquid Fuel
for Heating Steam Boilers or for other Purpose.
I JAMES YATE JOHNSON of 47 Lincolns Inn Fields in the County of Middlesex
Gentleman do hereby declare the nature of this invention which has been communi-
cated to me from abroad by Henry Julius Drory of 1 Burgring 15 Vienna in the
Empire of Austria and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
The apparatus constructed according to this Invention has for its object the injection
and regulation of the injection of tar or other liquid fuel into a furnace or place of
consumption in such a manner that complete combustion of the tar or liquid fuel is
attained without the production of smoke. I will describe the Invention with
reference to the accompanying drawings Figure 1 shewing in section the apparatus
constructed according to this Invention. Figure 2 shewing it applied to a furnace
and Figure 3 shewing a tar filter suitable for use with the apparatus.
The apparatus consists of a hollow body A' preferably of cast or wrought iron
having two inlets b and c leading into two hollows or chambers B and C within the
said body A. The inlet and the chamber B with which it communicates are for
the admission of the tar or other liquid fuel whilst the other inlet c and chamber C
are for the admission of dried steam or heated air or gas.
Between the two chambers B and C is an opening in which is fixed an inner coned.
nozzle D situated in the centre of the apparatus and opening from the chamber B
and passing through the chamber C and entering a front and outer coned nozzle E
which opens from the chamber C. The tar or other liquid fuel entering the inlet /
and chamber B runs into the nozzle D and issues from its outer end d where it meets
and comes into contact with the steam, air, or gas passing out by the front and outer
nozzle E, and the liquid fuel is driven forward in the form of spray.
In the axis of the nozzle D is situated a moveable needle F by the moving or
screwing of which backwards and forwards the flow of the tar or liquid fuel at the
exit from the nozzle D can be regulated and by which also any obstruction which at
any time may exist at this point can be removed.
The shoulder at f may also be screwed up to bear on the opposite part of D and so
close the outlet for fuel when desired.
The space between the exterior of the end of the nozzle D and the interior of the
nozzle É can be regulated with the view of obtaining the greatest possible intensity
of combustion. This is effected by making the outer and front nozzle E screw or fit
so that it can be moved longitudinally in and out from the body of the apparatus.
The spray produced by the apparatus may be introduced into any suitable form of
furnace for example such as is shown in Figure 2 but preferably it is impinged upon
a wedge shaped piece G with its acute angle presented to the incoming spray so as to
break it up and divide it. This piece is shewn in side view in Figure 2 and in plan in
Figure 2 Figure 2 shews the liquid fuel and steam gas or air pipes (marked 62 and c²)

page_text: leading into the body A herein before described and provided with regulating and
stop cocks 3 and c³. is a passage at each side of the furnace by which air may be
admitted and passing therealong return thereby and be admitted into the furnace at
the part where the spray ignites. Figure 3 represents a strainer or filter which can
be used with advantage with the apparatus where the tar or liquid fuel has coarse
matter or thick parts which it is desirable to separate before passing the fuel into the
furnace. It consists of a body part H divided by a wire gauze or perforated division I
into two chambers h and h². "Into the chamber the crude tar or the like is admitted
at and impinges on the partition I the finer part passing therethrough and passing
out by the exit k to the inlet of the apparatus A Figure 1. The thicker portion of
the fuel which does not pass through the partition leaves the chamber h² by the outlet m
steam is admitted at when desired to clean the partition.
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 :—
1st. An apparatus for spraying tar or other liquid fuel for burning it for heating
steam boilers or for other purposes wherein there are chambers and inlets and outlets
for the fuel and steam gas or air respectively there being a needle or equivalent
regulator in the fuel outlet passage or nozzle end for removing any obstruction and
for regulating the flow of the fuel substantially as herein before described and illustrated.
2nd. An apparatus for spraying tar or other liquid fuel for burning it for heating
steam boilers or for other purposes, wherein there are chambers and inlets and outlets
for the fuel and steam gas or air respectively there being a nozzle in front of the
steam or air outlet for regulating the discharge space for the steam gas or air
substantially as hereinbefore described and illustrated.
3rd. An apparatus for spraying tar or other liquid fuel for burning it for heating
steam boilers or for other purposes, wherein there are chambers and inlets and outlets
for the fuel and steam gas or air respectively there being a needle or equivalent
regulator applied to the outlet for the fuel and a regulating nozzle at the steam gas
or air outlet substantially as hereinbefore described and illustrated.
4th. The arrangement and combination of parts hereinbefore described and
illustrated in the accompanying drawings for the purpose described.
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