Improvements in Incandescent Burners.
Year: 1896

page_text: Date of Application, 23rd Dec., 1896
Improvements in Incandescent Burners.
I, ALBERT BANDSEPT, of 60 Chaussee de Wavre Brussels, in the Kingdom of
Belgium, Engineer, do hereby declare the nature of this invention to be as
follows:
The improvements in incandescent gas burners consist essentially in the use
of a central gas jet in combination with an annular jet situate at a lower level.
in the manner hereinafter described.
The central gas jet issues from a nozzle the interior of which gradually tapers
to a point..
The annular jet issues from a series of holes or slits situate around the central
one, which holes may be replaced by an annular slit, the burner being then
constructed of two parts so adjusted as to leave the desired space between them for
the exit of the gas. The gas supplied to the annular jet first passes through one
or more truncated conical tuyeres, and then, joining the central one, passes up
through an expanding tube. The top of the latter (forming at the same time the
top of the burner) is covered with wire gauze covers having fixed between them a
baffle in the shape of a cone, the sides of which may be straight or curved.
The lower annular jet on issuing from the nozzle draws in air from openings
made in the body of the burner beneath the conical tuyere and produces a first
mixture of gas and air; whilst the higher central jet increases the velocity of that
mixture through the upper part of said tuyere, thereby producing an active
suction of air through openings above the conical tuyere. Said air inlets being
provided with regulating rings having corresponding openings.
The expanding tube may be enlarged at its lower part and fixed around the
tuyere by means of a wire gauze or other suitable means so that the upper air
draught will take place at the base through the annular space left between the
said tube and the tuyere.
Also the tuyere instead of being fixed in a special cylindrical body, in which is
secured the gas nozzle, may be fixed directly to said nozzle and be provided with
the lower air inlets. In certain cases the second air draught above the tuyere
may be suppressed.
The burner is moreover furnished with a suitable support for the attachment
of the incandescent hood or mantle, and with a gallery supporting the chimney.
The combustion of the gas in the burner is absolutely silent.
Applied to cylindrical hoods of sufficient resistance the burner has given the
best results obtained until now.

page_text: Improvements in Incandescent Burners.
I, ALBERT BANDSEPT, of 60 Chaussee de-Wavre, Brussels, in the Kingdom of
Belgium, 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:-
This invention relates to the construction of a burner of Bunsen kind, with
the passages for gas and air so arranged that the flame is specially suited for
incandescent gas lighting, as I shall describe referring to the accompanying
drawings which shew several forms of burners according to my invention.
As shewn in section in Fig. 1, there is a central gas passage tapering to a fine
jet, orifice J and around it at a lower level are annularly arranged gas jets C.
Air enters by apertures A surrounding these jets mixing with the gas in the
conical chamber T whence the mixture issues receiving more air by inlets 0, the
whole then ascending an expanding tube D and issuing through an annular
screen L of wire gauze or perforated metal surrounding a central deflecting cone P.
There may also be another gauze or perforated screen E below the cone. As shewn.
in Fig. 1 there is an annular passage C¹ instead of separate jets and the air
inlets A are regulated by a ring valve V.
As shewn in in Fig. 2 the annular gas jets are dispensed with and the expanding
tube D is adjustable in height being arranged to slide on the lower tube G. A
burner of this type somewhat modified is shewn in elevation in Fig. 3 and section
in Fig. 4. In this case the expanding tube D is arranged to slide on an
intermediate funnel tube F which slides on the lower part G of the burner.
The taper of the tube D to an increasing area upwards has the effect of increasing
the indraught of air to mix with the gas, and the mixture is rendered complete
as it issues to form the flame, by means of the central deflector P and the wire
gauze or perforated screen L.
The mixture may be rendered still more complete as shewn in Figure 5 by
lengthening the cone P and fixing on it helical blades H.
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. An incandescent gas burner constructed and operating substantially as
describe with reference to Figs. 1 and 1.
2. An incandescent gas burner constructed and operating substantially as
described with reference to Fig. 2.
3. An incandescent gas burner constructed and operating. substantially as
described with reference to Figs. 3 and 4.
Dated this 23rd day of September 1907
ABEL & IMRAY,
Agents for the Applicant.