A New or Improved Inverted Incandescent Gas or Vapour Burner.
Year: 1898

page_text: Date of Application, 15th Nov., 1898-Accepted, 14th Jan., 1899
COMPLETE SPECIFICATION.
A New or Improved Inverted Incandescent Gas or Vapour Burner.
We, GUSTAV HENZE, Warehouse Overseer, of Schluterstrasse 57, Charlotten-
burg, and BRUNO BARG, Merchant, of Graunstrasse 28, Berlin, both in the
Empire of Germany, 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:-
The object of the present invention is an incandescent burner the flame of
which is directed downwardly, the mantle being spread laterally. This construc-
tion of the burner gives an intense light, while using a small quantity of fuel
only and the heat of the gases of combustion draws up the air for combustion.
In the annexed drawing:-Fig. 1 is a vertical longitudinal section. Fig. 2
a plan view from below without the perforated cap P covering the end of the
burner.
As shown in the drawing the arrangement consists of the burner pipe A
attached at B to the gas or vapour feed pipe. Into the same pipe underneath the
opening for the gas entrance the air pipes D pass across the outer chamber K
surrounding the whole apparatus and open towards the outside the pipes being
cut obliquely at their ends to facilitate the sucking up of air.
A
The lower free end of the burner pipe A for gas delivery carries a flaring
sleeve F carrying inside and joined to it by means of cross pieces truncated
cone E the base of which faces downwards. This sleeve with cone E serves to
divide the flame and to spread or deflect the separate flames outwardly.
sieve like perforated hood P further divides the flames. Used for incandescent
lighting it is preferable to render the flame coming out of the burner mouth
non luminous by introducing more air, as the lighting effect of the flame is only
produced by the incandescent mantle. The great quantity of air of combustion
required for producing incandescent light is partially attained by the use of the
obliquely cut ends of the air pipes D heated by the hot gases of combustion,
ascending along the walls K of the burner mantle without mixing with the air of
combustion and is partially provided for by the effect of the nozzle M of the
gas pipe acting as an injector and fitted by means of screw threads or in any
other manner in the upper end at B. The gas flowing out with a certain pres-
sure from the little opening M acts as an injector as it does in the burner flame.
By the annular shield plate H with convex surface put upon the burner mouth
and held there by its own weight on the funnel shaped widening of the sleeve F,
the flame already laterally diverted is spread so as to pass outwards under the
plate H thus producing a mushroom like flame and the gases of combustion pass
between the funnel shaped widened part L of the chamber K surrounding the
whole apparatus and the plate H along the walls of the chamber K upwards
and in this manner heating the walls and the air channels D adding to the suction
of the air whilst a heating of the burner pipe A is avoided. The latter is heated
only at its lower end and the circulation of gas and air is thus improved. The
mantle for obtaining the required lighting effect is put on the hooks or pro-
1
1

page_text: jections arranged round the circumference of the plate H. The mantle itself
may be of any mineral incandescent substances heated to emit light by the effect
of the flame, or of fabrics saturated with a solution of such known materials.
The globes, put if required upon the mouth of the funnel L for protecting
against draught must naturally be provided with openings in order to allow for
circulation of air; it is preferable to make them radial to an opening in the
middle of the globe opposite the conical piece E, but other arrangements of open-
ings are also possible.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that
what we claim is:-
.
1. A burner for an inverted incandescent light wherein the flame coming out
of a double funnel shaped burner head below an annular surrounding plate of
convex surface for holding the mantle, is projected downwardly so that the
heated gases of combustion without heating the burner pipe itself and without
mixing with the air of combustion, heat the pipes for the feed air arranged near
the gas entrance and passing from outside the surrounding chamber of the burner
where said air feed pipes are provided with openings of suitable shape to allow
of strong suction of air.
2. An incandescent gas burner as described in Claim 1 wherein a small gas
entrance jet introduced into the gas entrance opening of the burner acts as an
injector augmenting the air suction with small consumption of gas.
a
3. In an inverted incandescent gas burner as described in Claims 1 and
globe covering the funnel like opening L of the burner chamber fastened thereon
in any suitable manner and provided with suitable openings for the circulation
of air.
n
"
HERBERT HADDAN & Co.,
Agents to Applicants, 18, Buckingham Street, Strand, London.