An Improved Construction of Incandescence Gas Burner.
Year: 1894

page_text: Date of Application, 10th July, 1894..:
Complete Specification Left, 22nd Mar., 1895-Accepted, 24th May, 1895"
PROVISIONAL SPECIFICATION.
An Improved Construction of Incandescence Gas Burner.
I, HENRI MARIE HUBERT, COMTE DELAMARRE of 162 Rue Ordener, Paris,
France, Gentleman, do hereby declare the nature of this invention to be as
follows:-
:-
This invention relates to an improved construction of incandescence gas burner,
in which the external air is drawn into the burner by means of the initial pressure
of the gas, and is distributed under the most favorable conditions for producing..
perfect combustion with a high degree of incandescence, the arrangement of the
burner being such that its proper action is not affected by the influence of strong
currents of air.
The burner is constructed as follows. The combustible gas issues from the
supply pipe through perforations in a nozzle into a surrounding mixing chamber
having lateral openings for the entrance of air, which is drawn in by the injector
action of the small gas jets, entering with some pressure. This mixing. chamber.
terminates at top in a second nozzle, the opening of which is made annular..by the
introduction of a conical stem that is screwed into the top of the bottom nozzle, so
as, by its adjustment, to vary the area of the annular opening. From the said
annular opening the mixture of gas and air issues into a second chamber, also
having lateral holes through which a further supply of air is drawn in so as to
combine with the mixture, and this then ascends through. a vertical tubular
extension to the burner. This is composed of a metal cylinder closed at the lower
end by a perforated disc having an upward projecting boss at its centre, whereby
the mixture of gas and air entering the cylinder through the perforated plate is
made to pass mainly against the sides of the cylinder. The upper end of the
cylinder is closed by wire gauze, through. which the combustible mixture issues
into the incandescence cage or cap of the burner, which is carried on the top of the
cylinder and in which the gaseous mixture burns.
Within this cage or cap is a cone of suitable refractory material, such as an alloy
of iron and nickel, which directs the burning gases against the cage so as to heat
this effectually to incandescence.
In order to prevent any accidental ignition of the gaseous mixture. within the
cylinder and tube below, a wire gauze diaphragm is also provided at the lower
end of the cylinder below the perforated disc. The incandescence cage or cap may
be constructed in any known manner, but by preference I make it of interlaced
filaments composed of a mixture of magnesia, zirconia and other oxides of metallic
earths. For protecting the burner from the effects of strong external air currents
and to ensure regularity of action, the first described lower parts of the burner-are
enclosed by a casing attached to the gas supply pipe at bottom and constituting at 1.
its upper end the gallery for the chimney glass, when such is used. Within-this.
casing is a cylinder surrounding the central supply tube first described, and, the air.
supply to the mixing chambers below enters through side openings in the upper end...
of the outer casing and passes down in the annular space between the latter and the
inner cylinder. The upper end of the latter is enlarged and has fixed to it a
tapering upward extension that surrounds the lower part of the burner at a short
distance therefrom.
A portion of the air entering the outer casing also passes through holes in the
base of the tapering extension of the inner cylinder and passing up between this.

page_text: and the burner, constitutes a further air supply to the flame, while another portion
of the air passes through other holes upward over the outside of the tapering
extension and assists by its upward current round the burner to keep the action of
the latter steady and uniform.
Dated this 10th day of July 1804
ABEL & IMRAY,
Agents for the Applicant.
I, HENRI MARIE HUBERT COMTE DELAMARRE, of 162 Rue Ordener, Paris,
France, Gentleman, 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 :-
This invention relates to an improved construction of incandescence gas burner,
in which the external air is drawn into the burner by means of the initial pressure
of the gas, and is distributed under the most favourable conditions for producing
perfect combustion with a high degree of incandescence, the arrangement of the
burner being such that its proper action is not affected by the influence of strong
currents of air.
The burner is constructed as I shall describe referring to the accompanying
drawings. Fig. 1 is a vertical section, and Fig. 2 is a plan.
The combustible gas in entering the burner meets a small cone A and passes
through perforations at its top into a surrounding mixing chamber B having lateral
openings for the entrance of air, which is drawn in by the injector action of the
small gas jets which enter with some pressure. This mixing chamber terminates
at top in a second nozzle C the opening of which is made annular, by the introduction
of a conical stem E that is screwed into the top of the lower nozzle A, so that by
adjusting it the area of the annular opening can be varied. From the said aunular
opening the mixture of gas and air issues into a second chamber D also having
lateral holes through which a further supply of air is drawn in so as to combine
with the mixture, and the whole then ascends through a vertical tubular extension F
to the burner proper. This consists of a metal cylinder H closed in its lower part
by a perforated disc K having an upward projecting boss M at its centre, whereby
the mixture of gas and air which enters the cylinder H through the perforated
plate K is made to pass mainly against the sides of the cylinder H and thence
through wire gauze OO. A cone P of suitable refractory material, such as an
alloy of iron and nickel directs the burning gases against the hood so as to heat this
effectually to incandescence.
In order to prevent any accidental ignition of the gaseous mixture within the
cylinder and tube below a wire gauze diaphragm R is also provided at the bottom
of the cylinder below the perforated disc K. The incandescence cage or cap may
be constructed in any known manner, but by preference I make it of interlaced
filaments composed of a mixture of magnesia, zirconia and other earthy oxides.
For protecting the burner from the effects of strong external air currents and to
ensure regularity of action, the lower parts of the burner first described are
enclosed in a casing S attached at its bottom to the gas supply pipe and constituting
at its upper end the gallery for the chimney glass when such is used. Within this
casing is a cylinder T surrounding the central supply tube first described; the
air supply to the mixing chambers below enters through side openings in the upper
.end of the outer casing and passes down in the annular space between S and T.
An air cone V surrounds the burner at a short distance therefrom. A portion of
the air which enters the outer casing passes through holes in the base of this cone

page_text: and passing up between this and the burner, constitutes a further air supply to the
flame, while another portion of the air passes through other holes upward over the
outside of the cone and by its upward current round the burner, assists to keep
the action of the latter steady and uniform.
The burner above described may be used with carburetted air or with coal gas or
the rich gases obtained by distillation of boghead coal or schists or from heavy
oils. It is suitable for use in lighthouses and beacons on account of the regularity
of its action notwithstanding air currents, the brilliancy of the light and the
facility with which it may be varied in size to suit different conditions.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. In an incandescence burner the double injector arrangement A B C D at the
base with regulating cone E substantially as described.
2. The burner consisting of the parts HK MOPR constructed and operating
substantially as described.
3. In combination with the burner, the casing S, cylinder T and cone V
substantially as and for the purpose set forth.
4. An incandescence burner consisting of the parts referred to in the preceding
claims arranged in combination substantially as described and illustrated.
Dated this 20th day of March 1895.
-
ABEL & IMRAY,
Agents for the Applicant.