Year: 1887

page_text: Date of Application, 5th Sept., 1887
Complete Left, 5th June, 1888
Complete Accepted, 6th July, 1888
I JOHN WALKER NEWALL of Arnold Road, Bow in the county of Middlesex
engineer do hereby declare the nature of this invention to be as follows:-
I inject the oil by means of a jet of air; not more than sufficient air to carry the oil
forward need be used. I introduce another current of air only below the first one,
the volume of this second current of air being sufficient for complete combustion of
the oil. I so direct these two currents that they meet together at a greater or less
distance from their outlets according to the length of flame required. The mingled
jets should impinge on a surface of firebrick or other suitable material when they will
at once inflame on the application of a light. The air blasts are supplied by
mechanical means not by chimney draught.

page_text: COMPLETE SPECIFICATION.
An Improved Method of Burning Oil for Heating Purposes.
I JOHN WALKER NEWALL of Arnold Road Bow 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:-
I inject the oil by means of a jet of air; not more than sufficient air to carry the
oil forward need be used. I introduce another current (of air only) below the first
one, the volume of this second current being sufficient for complete combustion of the
oil. I so direct these two currents by means of the channels through which they flow
that they meet together at a greater or less distance from their outlets according
to the length of flame required. The mingled jets should impinge on a surface
of firebrick or other suitable material when they will at once inflame on the application
of a light. The air blasts are supplied by mechanical means and not by chimney
draughts.
I will now describe my method of working as shown in the drawings hereto
annexed.
Fig. 1 is a plan of the oil injector as seen from above. A is the shell of the oil
injector, B is valve for regulating the air supply.
Fig. 2 is a sectional elevation shewing all the main parts of burner in their relative
positions. As before A is the outer shell of the oil injector, and B the air valve, C is
the oil supply pipe and D the oil regulating valve. A is a front view of injector nose.
E is the nozzle for the main supply of air for combustion. F, is the air regulating
valve. E, is a front view. It will be seen that the oil feed pipe goes through the centre
of the air pipe for injecting the oil, that both nozzles are constricted a little at the
orifice, and that the oil pipe projects slightly beyond the air pipe. When the air and
oil valves are opened the oil will be blown forward in a fine spray.
But it is difficult without the use of high pressure air to get all the oil forward, some of
it will always drop from the nozzle of the pipe. In order to pick up this dropping oil,
I keep the nozzle for the main air supply, slightly behind the injector nozzle. The
nozzle of air pipe E is slightly flattened so as to spread the air current.
The nozzles A & E are inclined to one another, at an angle so that the outgoing
currents of oil spray and air may impinge on one another, (at a greater or less distance
from the burner as may be required) and so may become thoroughly mixed so as to
give perfect combustion. Instead of having seperate pipes as shewn the two channels
for oil spray & air may both be formed in one piece, but the essential point is that
the two currents impinge on one another at an angle. Since the oils used for burning
are often rather thick and gritty, it is necessary to use a special regulator in order to
ensure a steady flow of oil. The regulator is shewn in fig. 3. D is the main casting
and I & O are respectively the inlet & outlet. H is the regulating plug, and K the

page_text: screw by which the plug may be moved with great exactness. His bored a little way
up, and has a V shaped cut made in one end of it as shewn at J, the small end of the
groove terminating in a small circle. Now when H is forced into D as far as it will
go, the opening is completely closed by the plug H, but when H is withdrawn
a little in order to let a small quantity of oil pass the small end of opening, J comes
opposite to O and the smallest thoroughfare formed will be approximately circular in
section which is the most favorable for a steady flow of a thick liquid in a fine stream.
Having now particularly described and ascertained the nature of my said
invention & in what manner the same is to be performed, I declare that what I
claim is :-
1. The use of an apparatus for burning oil for heating purposes wherein a jet of oil
spray is made to impinge on a jet of air at an angle.
2. The use of a valve for regulating the flow of oil, wherein a surface having a
V shaped hole formed in it, is caused to travel over another surface having a round
hole in it, the travel being regulated by means of a screw and the parts being so
adjusted that the small end of the V hole is first uncovered.
3. The combination and application of all the parts substantially as above
described.