Improvements in and in connection with Galleries for Incandescent Mantles.
Year: 1897

page_text: Date of Application, 21st May, 1897-Accepted, 26th June, 1897
COMPLETE SPECIFICATION.
Improvements in and in connection with Galleries for Incandescent
Mantles.
I, HANS WELLSTEIN of 8, Wörtherstrasse, Berlin in the Empire of Germany,
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 :-
Most incandescent burners at present employed suffer from the drawbacks that
the gallery for the incandescent body in consequence of its massive form, throws
too much shade, so that the light radiating from the incandescent body does not
sufficiently come into play. Further the contact service of the incandescent body
with the gallery is too large, which has for its effect that too much heat is absorbed
or withdrawn from the incandescent body whereby a less clear light is produced.
This drawback is removed according to the present invention by the gallery body
being formed of narrow strips which may be connected with one another at a
suitable place by a smooth or corrugated connecting bar. Such a gallery allows
of an exact centering of the incandescent body so that the latter is brought
perfectly evenly to incandescence.
A further drawback in the incandescent burners at present employed consists
in that the mixture of air and gas as soon as it emerges at the top of the burner
pipe burus directly along same, by which means the burner pipe becomes very
hot and thereby a considerable quantity of heat is withdrawn from the flame by
the burner.
in order to avoid this, the upper part of the burner pipe is provided with a bell
like casing which at its upper surface is provided with perforations; or a plate
provided at its outer edge with perforations is laid on an upper open bell-like
casing or may be suitably connected therewith. The air and gas mixture flows
through these perforations and is there ignited so that it cannot burn along the
burner pipe and thereby withdraw so much heat from the flame.
In the accompanying drawings:
Figure 1 is a vertical section of an incandescent light burner with the gallery
for the incandescent body, whilst
Figures 2 and 3 are details of the same burner;
Figures 4 and 5 are a vertical section and plan view respectively of a burner
with a gallery somewhat differently formed;
Figures 6, 7, 8, 9 and 10 show several forms of the gallery for the incandescent
body such as are employed.
a indicates the burner pipe, which at the upper end is provided with outlet
openings a for the mixture of gas and air. 6 is the gallery for the glass cylinder
and c the gallery for the incandescent body. The latter consists of a number of
narrow strips c which are connected either directly with the annular projection c³
(Figure 9), surrounding the burner pipe, or indirectly with a perforated or non-
perforated bottom plate c² (Figures 6, 7, 8, 9 and 10). With the object of
strengthening the strips c² or rendering them more rigid, they may be connected
with one another by means of a corrugated, (Figure 6), or smooth (Figures 7 and 8)
connecting bar c'. In Figure 10 the strips or bars c¹ develop at their lower end
into a broader ring c which may be either solid or perforated (Figure 10), and
also the bars or strips c³ may if desired be provided with perforations as shown in

page_text: Figure 10. The incandescent. body gallery is either adjustably mounted by means
of a tubular projection c* on the burner pipe, or is fixed, or as shown in Figure 1
is connected in any suitable manner with the cylinder gallery. On the upper end
of the burner pipe a, a bell-shaped casing d is arranged which is provided at the
edge of its upper surface with perforations d', Figure 4. In this casing the air
and gas mixture flowing from the openings a¹ is ignited or burnt at d, and the
flame then formed travels over the incandescent body which is held by the
gallery c and the support f.
In the burner shown in Figures 1, 2 and 3 the casing consists of two parts
capable of being separated. The lower part d is suitably mounted on the burner
pipe a, and above it lies the part e which is provided with slots or recesses e¹
through which the mixture of air and gas emerges and is then ignited.
The part e
may either be bent over the upper edge of the part d (Figure 2) or it may, as
shown in Figure 1, be laid on or if desired in the upper edge of the part d. The
outlet openings d and e¹ may be bordered by a somewhat domed or even a flat
edge.
The casing which also imparts to the flame a given form, prevents a great
heating of the burner pipe a and thus a withdrawal of warmth from the flame, in
consequence of which the total heat is conveyed as much as possible to the
incandescent body and the illuminating effect thus increased.
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 incandescent-body gallery for incandescent light burners, adapted to be
suitably connected with the burner tube and characterized by a number of arms or
strips (c) of metal or other suitable material provided with slots or otherwise,
which are connected either directly (Figure 9) or indirectly by a perforated
(Figure 8) or non-perforated (Figure 6) bottom plate (c2) with the annular
projection (c³) encircling the burner pipe (2), and which may be connected with
one another by means of a suitably shaped connecting bar (c) with the object of
thoroughly centering the incandescent body to the flame and of affording the latter
the best possible radiation of its light, substantially as described.
2. A form of construction of the herein described incandescent-body gallery, in
which the slotted or unslotted strips (c) are developed at their lower ends into a
perforated or unperforated ring (c) with the object of considerably increasing the
stiffness or rigidity of the gallery, substantially as described with reference to
Figure 10 of the accompanying drawings.
3. An incandescent-body gallery such as described in combination with a burner,
the burner tube (a) of which has at its upper end a bell-shaped casing (d) provided
at its edge with a number of perforations (e¹ and d) with the object of catching
the mixture of gas and air emerging from the burner pipe and bringing it into
combustion in proximity to the incandescent body (Figures 1, 2, 3, 4 and 5),
substantially as described and illustrated.
י...
W. P. THOMPSON & Co.,
Of 6 Lord Street, Liverpool, Agents for the Applicant.