An Improved Burner for Incandescent Gas Light.
Year: 1894

page_text: Date of Application, 11th June, 1894-Accepted, 14th July, 1894
COMPLETE SPECIFICATION.
An Improved Burner for Incandescent Gas Light.
I, MORITZ HORWITZ, trading under the name of Horwitz & Saalfeld, of
No. 4 Wraugelstrasse, Berlin in the Empire of Germany, Manufacturers, do
hereby declare the nature of my said 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 a burner rendered suitable as Bunsen's burner for
lighting purposes, by employing an incandescent body; and to the arrangement of
the burner in such manner that, without the aid of any mechanical device, the
flame which, with the present burners converges or comes to a point, is made to
spread or diffuse in tubular form throughout its whole, or nearly whole length, so
that every part of the incandescent body arranged over the burner comes in
contact with the flame, the incandescent body being thus fully utilized; whereas
with flames which converge or come to a point, the upper part of the incandescent
special
body is either in no way touched by the flame or it must be made of a
shape or form. According to the present invention, this spreading or diffusion of
the flame is effected by means of a strong current of air conveyed into the centre
of the Bunsen-flame, which current of air spreads the latter out in tubular form and
thus causes same to come in contact with the truncated, hood-like incandescent
body in such manner, that every part of the latter is made to glow. The incan-
descent body is preferably hung on, or secured to a stem suitably arranged on
the burner.
I will now describe my invention with reference to the accompanying drawing,
in which :
Fig. 1 is a vertical section of the improved burner.
Fig. 2 is a vertical section of a modified construction.
Fig. 3 is another modified construction in vertical section.
Fig. 4 is a part plan view and part horizontal section of the burner-ring.
Fig. 5 is a plan view on line A-B of Fig. 3.
In the construction shown in Fig. 1, the burner consists of the casing or
mantle a, to which the conical collar b is fixed. The gas-inlet pipe c connected
to the collar 6 is provided with openings c¹, as customary with Bunsen-burners,
through which openings air passes so as to produce the mixture of gas and air.
In the casing a, a tube or shell d, preferably conical, is provided, whose lower
end communicates with one or more open pipes e passing through the conical
collar b, and thus allowing pure air to enter. The object of that current of air is
to effect, a tubular-like spreading or diffusion of the flame. The upper end of the
tube or shell d, as shown in the drawing, is bent over so as to form a flange f.
The space between such flange fand the casing or mantle a forms the outlet for
the combustible mixture of gas and air, which is brought somewhat under tension
owing to the conical form of the tube d while the flange f catches the current of
gas in such manner that no unpleasant rushing or roaring of the flame can take
place. The current of pure air (arrow 1) caused when the light is burning passes
out of the upper end of the shell d, and impinges against the flame, which is
consequently diffused in tubular form, also at its upper part; the incandescent
body is thus acted upon by the flame at every part. This incandescent body x,
of the form of a truncated cone (Fig. 2) & made, for instance, of thin threads
interlaced, is mounted on a pin or stem g secured by a perforated disk h, through
which perforations the pure air passes. This disk his preferably arranged in the
shell d. as shown in Fig. 1.

page_text: In the modification shown in Fig. 2, the mixture of gas and air is conveyed
through a bifurcated pipe into the annular chamber formed by the tubes ad',
whereas the pure air enters through the open lower end of the inner tube d¹ (as
shown by the arrow 2) and is driven against the inner side of the 'flame. The
flange and mantle a' forming the passage for the combustible mixture of gas and
air, is made like a cap f' and mounted on the upper edge of the tube d'; the per-
forated bottom-plate of this cap fl serves as support for the correspondingly
perforated plate h¹. The stem g secured to the latter, carries at its upper end a
perforated disk i, preferably made of asbestos, mica or other suitable material, upon
which the incandescent body x is hung or mounted. The length of the stem and
the diameter of the casing or mantle a', are such that the lower end of the incan-
descent body hanging from the disk i, rests closely over the casing a¹. By this
arrangement the flame forced outwards by the inner current of pure air takes the
form of the incandescent body, so that the latter is brought to a glow at every
part. By turning the perforated disk ' on the correspondingly perforated disk f
in such manner that the openings are more or less covered, the current of air can
be easily regulated.
Figure 3 shows another modification, in which the combustible mixture of gas
and air is conveyed through a bifurcated pipe ³, covered by a plate k having side
openings m m for the tubes and a central opening n leading to the partly
conical tube d; the pure air causing the flame to spread or diffuse, passes through
this pipe (arrow 3). The casing or mantle a², suitably secured to the edge of
the plate k, is connected at its lower end with a tapering collar 1. The object of
this collar is to compress to some extent the mixture of gas and air & thus secure
the thorough combination or mixture of both constituents. The chamber between
the casing a and the tube d is closed at its upper end by the ring o.
This ring
is made of lardite, or other suitable material, and is provided with a number of
slits o which taper towards their lower ends and form a circular opening o²
underneath the ring. By means of this arrangement and the conical form of the
tube d², the combustible mixture is forced through the slits o' with considerable
pressure. The plate 2 of the stem g secured to the upper end of the tube d², is
preferably provided with slanting openings, and at its lower or under side with
a conical projection h for directing the pure air passing through the tube d'against
the inner side of the flame.
A gallery y or other suitable device for carrying the glass z, is secured to the
casings or mantles a, a¹ & a', respectively.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. An improved Bunsen-burner for incandescent gas light, characterized by the
arrangement of a tube (d, d¹ d²) through which pure air passes & causes the flame
to spread or diffuse in such manner that the latter comes in contact with every
part of the incandescent body, substantially as described and shown in the
drawing.
2. In Bunsen-burners of the kind claimed in Claim 1, the arrangement of a
conical air-inlet pipe (dd, Fig. 1 and 3) substantially as described and shown in
the drawing.
3. In Bunsen-burners of the kind described in Claim 1, the arrangement of a
hood-like flange (f, f) at the upper end of air-inlet pipes (Fig. 1 and 2)
substantially as described and shown in the drawing.
4. In combination with Bunsen-burners of the kind described in Claim 1, &
conical collar (1, Fig. 3) substantially as described and shown in the drawing.
Dated this 11th day of June 1894.
.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., Agents.