Improvements in Incandescent Gas Burners.
Year: 1896

page_text: Date of Application, 9th Sept., 1896-Accepted, 24th Oct., 1896
COMPLETE SPECIFICATION.
Improvements in Incandescent Gas Burners.
I, PAUL BODE, Manufacturer, of 14 Ritterstrasse, Berlin, 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 :-
This invention for improvements in incandescent gas burners has for its object
to provide a burner noiseless in its action which effects a preliminary heating of
the mixture of gas and air before combustion, thereby raising the heating and
lighting effects of the flame.
In the accompanying sheet of illustrative drawings: Fig. 1 is an elevation of a
burner constructed according to this invention. Fig. 2 is a sectional elevation,
Fig. 3 is a sectional plan, and Figs. 4, 5 and 6 are detail views of the same.
The lower part of the Bunsen tube a is provided with a larger number of air
inlets & than hitherto employed. These inlets are surrounded by a grid c with
inclined air inlet slots d. The upper part of the Bunsen tube a projects into the
concentric tubes e and f. The tube e is provided with a top closing plate el and
with outlet slots e² at the bottom and is fitted over the Bunsen tube a, an annular
space being left between the two tubes. Its concentric position is assured by
means of ribs e. The tube has at its upper end the inwardly projecting roll fi
on which the specially shaped loose parts and rest. These parts are shown in
Figs. 4-6 by vertical section and horizontal section respectively; Fig. 4 showing
also both parts inserted in each other, whilst Fig. 5 shows the outer and Fig. 6 the
inner parts separately. The outer part y consists of a simple ring with undulating
or fluted outer surface. The inner part 4 consists similarly of such a ring
surrounded both inside and outside by flat rims i and . The inner flat rim is
closed underneath by the bottom plate k which carries on its upper side the central
socket for the carrier of the incandescent mantle m. The tube fis provided like
petroleum burners with the grid n and the chimney gallery o.
9.
When the burner is used the gas which rushes upwards through the inlet a¹
draws in atmospheric air through the holes b. This atmospheric air is caused, by
the inclined slots d to enter the Bunsen tube a in an inclined direction. By this
means a rotary movement is imparted to the ascending layers of air and conse-
quently a mixture of the gas and air, necessary for the noiseless burning of the
flame, is produced in the Bunsen tube a itself. The mixture of gas and air then
flows in a zig-zag manner through the circular spaces between a and e, and e and f,
and then through the numerous ways or channels formed by the parts g and h to
the flame. The flame has the shape of a hollow globe with rather thick enclosing
surfaces. By means of the abundance of metal in the channels the heat from the
flame is carried downwards and a preliminary heating of the mixture collected in
the circular spaces is thus effected whereby the heating and lighting effects are
considerably raised.
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. In incandescent gas burners, a Bunsen tube surrounded at its lower part by a
grid with inclined slots for the inlet of air, and at its upper part by concentric
tubes with burner rims formed of undulating or fluted ring inset pieces for the

page_text: production of a noiseless and intense flame, to effect an intimate mixture of the gas
and air in the Bunsen tube and a preliminary heating thereof in the circular
spaces between the Bunsen tube and the outer burner tubes, substantially as
described.
2. The improvements in incandescent gas burners, substantially as described
with reference to the drawings.
Dated this 9th day of September 1896.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.