Method of and Apparatus for Illumination by Means of Combustible Gas, with Forced Supply Produced by Electrical Energy.
Year: 1894

page_text: Date of Application, 22nd Nov., 1894
Complete Specification Left, 31st July, 1895-Accepted, 14th Sept., 1895
PROVISIONAL SPECIFICATION.
Method of and Apparatus for Illumination by Means of Combustible
Gas, with Forced Supply Produced by Electrical Energy.
I, LOUIS DENAYROUZE, of Reuil, Ferté sous Jouarre, Seine & Oise, France,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates more particularly to the system of illumination by means
of incandescent gas burners and it consists mainly in providing such burners
either with a forced air supply or a forced air and gas supply produced by electrical
energy. For this purpose according to one arrangement I employ in combination
with the gaselier or other burner apparatus used an air propeller or fan for
forcing air under pressure through pipes or channels to the burners, such air
propeller being driven by a small dynamo or magneto electric machine actuated by
electric currents supplied through wires from any convenient source of electricity
such as an electric main for lighting or other purposes, or a primary or secondary
electric battery.
By means of this method of operating, an increased illumination is obtained with
incandescent gas burners by the use of a forced air supply without requiring
cumbersome apparatus for that purpose and at a comparatively small cost.
Various arrangements may be employed for carrying the method of operating
into practice.
Thus according to one arrangement, a small dynamo or magneto electric motor
combined in any suitable manner with a fan or propelling device can be arranged
within a casing forming the upper part or crown of a gaselier and insulated wires
are led to the said motor from any convenient supply of electrical energy. The
motor may be conveniently arranged with its hollow armature axis vertical, having
below the air propeller fixed thereon, the illuminating gas being made to enter the
upper end of the axis and to issue through a perforated extension thereof into a
small chamber where it mixes thoroughly with the air supply forced in by the fan,
the effectual mixing being promoted by revolving wings or discs fixed to the
armature axis. From this chamber the combustible mixture is led down through a
pipe to the incandescent buruer or burners of the gaselier, which may either be in
the form of a sun burner with a star-shaped finely perforated incandescence body,
or in the form of hoods or cages.
The supply of combustible mixture is regulated by taps or valves, which may
also be controlled by an electric current acting on an electromagnetic regulating
device.
According to another arrangement, I effect the mixture of gas and air by
drawing into the air propeller not only the air supply but also the gas supply, so that
both are mixed together in the propeller and the mixture is then conveyed direct
to the burners. For this purpose the gas supply pipe is made to enter a small
chamber where the gas issues in a number of small jets among the air which is
drawn in by the action of the propeller communicating with the said chamber.
This chamber may be closed and the air supplied thereto by a pipe part of which
may be formed into a coil above the burner, so that the air supply will become
heated on its way to the chamber, and thus still farther increase the effectiveness
of the combustion. The air and gas having become partly mixed in the chamber,

page_text: will become still more so in being drawn rapidly through the tube to the propeller,
and the mixing will be completed in the most perfect manner by the rapid action
of the propeller blades upon the particles.
In some cases the gas supply may be alone forced by the propeller, the current
of air supply being induced by the jets of gas.
The heating of the air supply may also be effected by causing the air to pass up
through the circular group of small glass tubes forming the glass chimneys now
frequently used for incandescent lamps, the upper metal ring of such chimneys
being made as a hollow chamber for receiving the heated air from the tubes and
supplying it through a tube to the mixing chamber or propeller.
For increasing the luminosity of the burners, a portion of the electric current
employed for working the propeller may also be employed for electrolytically
decomposing water, the resulting oxygen and hydrogen gases being led through
pipes to the mixing chamber for the gas and air so as to combine therewith, suitable
precautions being taken for the prevention of explosions.
It will be evident that in lien of or in combination with ordinary illuminating
gas and air, there may be used for the purposes of my invention, air mixed with
vapour of combustible liquids, produced in any well known manner.
Dated this 22nd day of November 1894.
ABEL & IMRAY,
Agents for the Applicant.
Method of and Apparatus for Illumination by Means of Combustible
Gas, with Forced Supply Produced by Electrical Energy.
I, LOUIS DENAYROUZE, of Reuil, Ferté sous Jouarre, Seine & Oise, France,
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 invention relates more particularly to the system of illumination by means of
incandescent gas burners and it consists mainly in providing such burners either
with a forced air supply or a forced air and gas supply produced by electrical
energy. For this purpose according to one arrangement I employ in combination
with the gaselier or other burner apparatus used, an air propeller or fan for forcing
air under pressure through pipes or channels to the burners, such air propeller
being driven by a small dynamo or magneto electric machine actuated by electric
currents supplied through wires from any convenient source of electricity such as
an electric main for lighting or other purposes, or a primary or secondary electric
battery.
By means of this method of operating, an increased illumination is obtained with
incandescent gas burners by the use of a forced air supply without requiring
cumbersome apparatus for that purpose and at a comparatively small cost.
Various arrangements may be employed for carrying the method of operating into
practice.
Thus according to one arrangement of which Fig. 1 of the accompanying
drawings is a vertical section a small dynamo or magnetic electric motor c combined
in any suitable manner with a fan or propelling device d can be arranged within a
casing p forming the upper part or crown of a gaselier and insulated wires are led
to the said motor from any convenient supply of electrical energy. The motor
may be conveniently arranged with its hollow armature axis vertical, having
below it the air propeller fixed thereon, the illuminating gas supplied at a being
made to enter the upper end of the axis and to issue through a passage g to
perforations fin an extension of the axis into a small chamber h where it mixes

page_text: thoroughly with the air supply drawn in at openings f by the action of the fan
blades e, the effectual mixing being promoted by revolving wings or discs i fixed
to the armature axis. From the chamber h the combustible mixture is led down
through a pipe provided with cock m to the incandescent burner k or burners of
the gaselier, which may be in the form of a sun burner with a star-shaped finely
perforated incandescence body n such as magnesia with numerous jet holes o.
Instead of the star o, incandescence hoods or mantles may be used as shewn at k
Fig. 2 which represents a gaselier of two branches supplied with the combustible
mixture from the chamber h.
The supply of combustible mixture is regulated by taps or valves such as m¹
which may also be controlled by an electric current acting on an electromagnetic
regulating device.
According to another arrangement, shewn in elevation partly sectional in Fig. 3,
I effect the mixture of gas and air by drawing into the air propeller not only the
air supply but also the gas supply, so that both are mixed together in the propeller
and the mixture is then conveyed direct to the burners. For this purpose the gas
supply pipe a is made to enter a small chamber where the gas issues in a number of
small jets among the air which is drawn in by the action of the propeller d
worked by an electromotor c. This chamber may have the air supplied thereto by
a pipe part of which may be formed into a coil above the burner k so that the
air supply becomes heated on its way to the chamber, and thus still farther
increases the effectiveness of the combustion. The air and gas having become
partly mixed in the supply chamber, become more intimately mixed in passing
rapidly through the tube to the propeller, and the mixing is completed in the most
perfect manner by the rapid action of the propeller blades upon the fluids.
In some cases the gas supply may be alone forced by the propeller, the currents
of air supply being induced by the jets of gas.
The heating of the air supply may also be effected by causing the air to pass
up through the circular group of small glass tubes forining the glass chimneys
now frequently used for incandescent lamps, the upper metal ring of such chimneys
being made as a chamber for receiving the heated air from the tubes and supplying
it through a tube to the mixing chamber or propeller.
For increasing the luminosity of the burners, a portion of the electric current
employed for working the propeller may also be employed for electrolytically
decomposing water, the resulting oxygen and hydrogen gases being led through
pipes to the mixing chamber for the gas and air so as to combine therewith, suitable
precautions being taken for the prevention of explosions.
It will be evident that in lieu of or in combination with ordinary illuminating
gas and air there may be used for the purposes of my invention, air mixed with
vapour of combustible liquids, produced in any well known manner.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The utilisation of two distributing systems, such as for the most part exist,
the one of gas and the other of electricity to supply and mix the combustible for
incandescent gas lights.
2. The formation by the electric energy of an intimate mixture of the gas and
air for the combustion.
3. The adaptation of an electric motor and fan driven by it to a gaselier or other
lighting apparatus, as and for the purpose set forth.
4. The arrangement of mixing chamber in which the gas and air are mixed by
the revolution of blades effected by moderate power.
5. The arrangement by which the gas and air for the incandescence burner are
at the same time drawn in and intimately mixed by the fan action.
6. The application of the mixed air and gas to an incandescence burner of any
known kind or form.

page_text: 7. In combination with the mixing apparatus devices for beating the air supply
by the heat of the burner which it supplies.
8. The enrichment of the gas and air mixture by the addition of oxygen and
hydrogen resulting from the decomposition of water by the electric current which
supplies the motor.
9. The enrichment of the gas and air mixture by addition of combustible
vapours.
Dated this 31st day of Tule 1905
ABEL & IMRAY,
Agents for the Applicant.