Improved Apparatus for Vaporizing and Burning Mineral Oil.
Year: 1893

page_text: Date of Application, 9th Feb., 1893
Complete Specification Left, 9th Nov., 1893-Accepted, 23rd Dec., 1893
PROVISIONAL SPECIFICATION.
Improved Apparatus for Vaporizing and Burning Mineral Oil.
I BRUNO GROSCHE of Bartholomew House, Bartholomew Lane, in the City of
London, Merchant, do hereby declare the nature of this invention to be as
ollows:-
:-
My invention relates to a burner for volatilizing mineral oil and burning the
apor thereof, so constructed that the volatilization of the oil and the combustion
of the gas shall be effected in such manner as to yield results better than can be
obtained with apparatus of the kind at present in use.
The burner of my invention comprises a generator preferably in the form of a
norizontal annular chamber whose central opening constitutes the combustion
chamber, a pipe terminating in a nozzle rising within the generator and having an
upwardly directed orifice situated centrally beneath the combustion chamber, and
curved air supply pipes arranged diametrically opposite one another and in position
to supply air at a point between the orifice in the pipe and the combustion
chamber.
The burner is supported on a casting having a horizontal diaphragm from which
rise the air supply pipes which are curved and the pipe which conveys the gas from
the generator, the latter being arranged at right angles to the air supply pipes.
One end of this pipe is closed by a removable plug and its other end is bent
upwards and terminates in a nozzle within the generating chamber, the same being
screw-threaded for attachment with the bottom of the generating chamber, and
having a collar or enlargement on which the latter rests. The oil supply pipe is
attached to a socket beneath the diaphragm and communicates with the generator
by a short length of tube opening therein. The central opening of the generator
which constitutes the combustion chamber is preferably about one inch in diameter.
The generator which has internal ribs or distance pieces is designed to be partially
filled with iron scraps or other material to aid in heating and vaporizing the oil,
(small wires being preferred for this purpose) the generator being provided with
an opening closed by a plug to enable it to be filled with this material.
To obtain an increased air supply the casting may have a closed chamber beneath
the diaphragm with which a suitable air mixer may be connected.
In order to remove impurities from the oil and equalize the feed, I interpose a
filter between the source of supply and the burner, the said filter consisting of a
bent pipe or trap coupled to elbow pieces and provided with a suitable valve or
valves and filled with mineral wool or equivalent material.
To prevent the flame from lapping down on the generator, I provide a spreader
which is supported above the generator either by legs resting on the latter or by a
bracket secured to a lug on the generator and passing through an aperture in the
spreader, the said spreader being of circular form and having scalloped or serrated
edges.
The operation is as follows-
The oil passes through the filter and thence into the generator, the generation of
the gases being started by allowing a suitable quantity of the oil to overflow
through the central orifice of the pipe which rises into the generator onto the
casting or pan beneath. The supply is then turned off, and the oil lighted so as to
heat the generator and vaporize the oil therein. The gas then passes out at the
orifice and the flame jets up into the combustion chamber and strikes the spreader.
The oil supply is then turned on and the burning takes place in the usual manner.

page_text: An important feature of this invention is the means adopted for the supply of
the air in close proximity to the orifice in the pipe and the central opening of the
generator or combustion chamber:
Dated this 0th of 1002
B. GROSCHE,
By A. M. & Wm. Clark,
33, Chancery Lane, London, Chartered Patent Agents.
COMPLETE SPECIFICATION.
Improved Apparatus for Vaporizing and Burning Mineral Oil.
I, BRUNO GROSCHE of Bartholomew House, Bartholomew Lane, in the City
of London, Merchant,_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 invention relates to burners for volatilizing mineral oil and burning the
vapor thereof, the burner being so constructed that the volatilization of. the oil
and the combustion of the vapor shall be so effected as to yield results better than
can be obtained with burners of the kind at present in use. The improved burner
is simple, efficient, and cheap of manufacture, and is provided with a trap-feed
having a filter by which the oil is filtered as it passes through the supply pipe to
the generating chamber and the passage of the oil is equalized whilst the trap
obstructs the back pressure from the generator. I make provision for a forced
draught when desired, and also a simple and efficient means for cleaning the vent.
I provide a spreader with a scalloped outer edge, pivotally mounted above the
generating chamber. Other objects and advantages of the invention will herein-
after appear and the novel features thereof will be specifically defined by the
claims.
The invention is clearly illustrated in the accompanying drawings, forming part
of this Specification, in which.
Figure 1 is a side elevation of one form of burner, with portions broken away
to better shew other parts.
Figure 2 is a vertical section, on line 1-1 Figure 1.
Figure 3 is a horizontal section, on line 2-2 Figure 2.
Figure 4 is a plan of the spreader.
Figure 5 is a side elevation of the cleaner.
Figure 6 is a sectional elevation, on line 3-3 Figure 7, of a slightly modified
arrangement of oil burner.
Figure 7 is an elevation of the same, looking in the direction of the arrow
Figure 6, and
Figure 8 is a partial sectional plan view on line 4-4 Figure 7.
The same letters of reference indicate the same parts in all the figures.
Referring now to the details of the drawings by letter, A designates the supply
pipe to the burner. It is designed to connect with any suitable source of supply
and is provided with a valve B and beyond the valve it is connected to a trap
and in this trap is placed some suitable material, as mineral wool, for the purpose
of filtering the oil in its passage therethrough and also equalizing its flow this trap
also serves to prevent back pressure from the generator, A' being the continuation
of the supply pipe beyond the trap. The drawing shews only one of the many
ways in which the parts may be connected, the manner of connection depending
somewhat upon the location of the burner. The form shewn is designed for use in
a cooking stove, and I propose to employ one such burner under each lid, each
being independent of the other, so that one or more may be used at the same time.
D is a casting preferably circular in form and having a horizontal diaphragm d

page_text: having a socket d¹ to which the pipe A² is screwed. This casting is also provided
with the diametrically-opposite curved air tubes E E which are curved towards
each other, as seen best in Figure 2, and their adjacent ends are arranged to
terminate beneath the central aperture g of the generating chamber G hereafter
described. Arranged at right angles to and between the pipes E and resting upon
the diaphragm d is the pipe F which has one end closed by a removable plug f
and its other end is curved upward and terminates in a nozzle f¹ which extends
within the generating chamber or retort G being screw-threaded and screwing into
a tapped hole in the bottom of the chamber G, as seen in Figure 1. The
generating chamber G is in the shape of an annulus, the central opening g being
preferably about one inch in diameter, the top and bottom being stayed by studs g.
This chamber is designed to be partially filled with iron scraps g², preferably wire
in short lengths, or other material, to aid in heating and vaporizing the oil. The
filling may be through one or more openings closed by plugs g³. The pipe F is
provided upon its upper side with a small vent-hole 2 which is directly under the
centre of the aperture of the generator, as shewn in Figure 2. d² is a tube
forming an upward continuation of socket d' and connected to the generator G.
His a spreader formed with a scalloped or serrated edge, as seen in Figures 1 and 4.
It may be supported upon the top of the generator chamber by means of the
legs h, or an elbow arm I pivoted in a lug on one side of the generator chamber, as
shewn in Figures 2 and 3, the horizontal portion of the arm passing through a lug
on the top of the spreader, where it is adjustably held in any suitable manner, as
by a removable pin 2 entering one of a row of holes i in the horizontal arm.
When it is desired to clean out the vent hole f2 in the pipe F the spreader is
removed or swung round and for the purpose of cleaning said hole I have provided
a cleaner shewn in Figure 5 which consists of a rod or tube J having a reduced
portion which carries a pick or wire point to enter the said hole. To provide for
a forced draught, the casting D has a bottom K to enclose a chamber beneath the
diaphragm d, as indicated by dotted lines, into which leads a funnel-shaped air
mixer L.
The operation is as follows:-The liquid fuel is fed through the supply pipe
through the trap where it is filtered and thence passes up into the generator. The
generation of the gases is started by filling the generator until the overflow at
nozzle passes out of the small vent hole f2 into the pan of the casting D.
When the pan is about one-third full (or to a height determined by an overflow
pipe m, as shewn in Figure 7) the supply is shut-off at valve B and the oil in
the pan D is then lighted. The flame will heat the generator and vaporize the oil
therein and the gas will pass down through nozzle f¹ and escape at the small
vent where it will be ignited, the flame shooting up through the aperture g so
as to strike the spreader H. The valve B is then opened and the liquid fuel
continues to vaporize and burn. The spreader controls the flame in such manner
as to draw the flame up and so prevent it lapping down on the generator and.
its scalloped edges so divides the flame so as to obtain a much better result and
produce more heat. It is important that the air pipes be arranged so as to
deliver the air in close proximity to the vent f" and the central opening through
the generator whereby combustion is aided and better results obtained.
Modifications in details may be resorted to, without departing from the spirit of
the invention or sacrificing any of its advantages. For example, referring to
Figures 6, 7, and 8, whilst all the foregoing parts are substantially the same as
above described, there may project from the lower portion of the periphery of the
saucer D an annular flange D' adapted to support a globular casing or shell N the
upper mouth of which opens immediately below the spreader disc H. Near
the lower end of the casing is a series of openings n extending completely around
the casing and of sufficient diameter to admit the air necessary to support com-
bustion, but not in sufficient quantity to chill the retort G. This casing will fully
protect the retort or generator from currents of cool air and will retain the heat

page_text: around the same, while the air admitted through the openings will become heated
and will the more readily part with its oxygen and cause more thorough and perfect
combustion. Moreover at the top of the casing a portion of the heated air will
come in contact and mingle with the flames being acted upon by the spreader
disc H and any unconsumed particles of carbon will be ignited and burnt and
the deposit of carbon on cooking vessels or other articles will be largely avoided.
In order to light the burner when first starting the operation, I provide in the
casing N an opening sufficiently large to gain access to the burner, this opening
being closed by a door O sliding in guides P or otherwise suitably connected to the
casing. The openings n are also formed in the door so that when the door is closed
there is a substantially continuous series of openings at equal distances from each
other extending completely around the casing.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1st. The combination, with the casting and its diaphragm and curved air pipes,
of the annular generator with central aperture and the elbow pipe communicating
with the generator and having a vent beneath the hole in the generator and the air
pipes terminating below said hole and centrally over the vent in said pipe, as set
forth.
2. The combination, with the casting and its air pipes, of a generator with
central aperture, the supply pipe communicating with the generator and the elbow
pipe communicating with the generator and having a vent hole beneath the opening
in the generator, said air pipes being oppositely curved and terminating over the
said vent hole and below the central aperture through the generator, as and for
the purposes specified.
3. The combination, with the casting having integral depending flange,
horizontal diaphragm, and curved air pipes rising from the diaphragm of the
generating chamber, the pipe having vent below and between the said air pipes and
having a nozzle within the generating chamber, the supply pipe and the tube
connecting the diaphragm of the casting with the generator and with which the
supply pipe communicates, all substantially as shewn and described.
4. The combination, with the casting having integral depending flange,
horizontal diaphragm, and curved air pipes rising from the diaphragm of the
generating chamber, the pipe having vent below and between the said air pipes
and having a nozzle within the generating chamber, the supply pipe and the tube
connecting the said diaphragm with the generator and with which the supply pipe
communicates, and a removable funnel-shaped air-mixer, all substantially as shewn
and described.
5. The combination, with an oil burner, having a vaporizing retort or generator
and a flame-spreading disc, of a casing or shell surrounding the burner and retort,
said casing having an open upper end immediately below the spreader disc and
openings at or near its lower end for the admission of air, substantially as
described.
6. The combination, with an oil burner having a vaporizing retort or generator
and flame-spreading disc, of a casing or shell surrounding the burner and retort,
said casing having an open upper end and openings at or near its lower end for the
admission of air, there being in said casing an opening for convenience in
lighting the burner and a door adapted to cover said opening, substantially as
described.
7. The combination, with an oil burner having a vaporizing retort or generator
and a flame-spreading disc, of a casing or shell surrounding the burner and retort,
said casing having an open upper end and openings at or near its lower end for the
admission of air, there being in said casing an opening for convenience in
lighting the burner and a sliding door adapted to cover said opening, said door

page_text: being provided with smaller openings corresponding to those in the casing, sub-
stantially as specified.
Dated this 9th day of November 1893.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.