Improvements in or connected with Incandescent Gaslight Burners.
Year: 1898

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with Incandescent Gaslight Burners.
I, GOTTLOB HIMMEL, of 5, Pfleghofstrasse, Tübingen, in the Empire of Germany,
Manufacturer, 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 has for its object an improvement in incandescent gaslight burners,
partly for protecting the susceptible incandescent body from damage when lighting
the lamp and against any shocks which may arise or the like, and partly to obtain a
better mixture and division of the compound of gas and air and of producing an
entirely quiet and noiseless burning of the same. A further and important point is
that in the case of lighting the gas from a distance by means of a permanent flame
or an electric lighting apparatus, the parts of such lighting devices which were
hitherto placed in the gas combustion chamber are according to the present invention
arranged in a chamber wherein they are thoroughly protected and constantly cooled
by the continuous inflow of the atmospheric air for the combustion and are thus
protected against rapid deterioration.
The improved burner differs even outwardly in a marked manner from the burners
hitherto employed in that it is formed of only one cylindrical part whilst the burners
hitherto employed were formed of two conoid parts put together, the upper one
of which forming the actual burner was passed over the lower which forms the mixing
pipe of the Bunsen burner.
In the accompanying drawings,
Figure 1 is a vertical section of the improved burner;
Figure 2, an elevation of same;
Figures 3, 4 and 5, horizontal sections on the lines x-x, y-y and 2-2 of
Figure 1 ;
Figure 6 is a vertical section; and
Figure 7, an elevation partly in section of a modified form of the improved burner
which differs from that shown in Figures 1-5 by there being a separate burner
mouthpiece and a separate method of lighting from a distance.
The improved burner consists of a cylindrical pipe B which in order to allow of
its being more conveniently removed is attached to the gas nozzle G by means of a
bayonet joint. This nozzle G similarly to the ordinary Argand burners has a number
of small tubes g which branch from a head g' which is screwed on the gas supply pipe
tube O. The inner wall H of the nozzle G is prolonged upwards.
A pipe A is arranged in the burner pipe B, which pipe A is held longitudinally to B
by means of three-armed rosettes C arranged in the burner pipe B and is screwed
above into a closing cap E provided with several perforations and is carried by the
said cap. The cap E is carried by a cupola shaped gauze 1) which it presses against
the joint of the pipe A, which gauze D at its outer edge is attached to the burner
pipe B in the ordinary manner by means of a ring sprung in. The closing socket is
narrowed towards the top and arranged for receiving the carrying pin or fork F for
the incandescent body. (Figures 1, 6 and 7).
The pipe A is of somewhat less diameter than the internal pipe H of the gas
nozzle G which has at top a suitable number of small gas outlet openings, Figure 5.

page_text: The pipe B is provided at its lower part with a number of slots b lying one above the
other which have a double function, that is, they serve as air inlet openings for the
burner pipe B and also render the upper part of the burner pipe elastic so as to have
a spring action in all directions. For this object the slots b are so far cut away that
the upper part of the pipe has only a narrow bar of connection with the lower, that is
to say, the upper part can move towards the under part on the opposite side of the
bar. By the arrangement of several such slots at different places the part of the
burner pipe B lying above the said slots will be rendered flexible to all sides, whilst
the lower part will remain rigid. On this lower part, arms are arranged either
directly or by means of a ring passed over the same to carry the burner gallery, the
cylinder, the lamp globe and the like. If any shock to the lamp or a more or less
vigorous movement of the same takes place, the upper spring part of the burner
pipes B will paralyse the shock to the incandescent mantle and consequently even a
vigorous movement cannot damage the susceptible incandescent body.
The combustion of the gas is more complete and the ignition of the mixture of gas
and air takes place more quietly and noiselessly, than hitherto. The mixture of gas
and air is rendered more thorough by the air passing through the slots b and thus
encountering between the pipes A and H (that is to say from opposite sides) the gas
emerging from the holes of the nozzle G and mixing itself thoroughly therewith.
The mixture of gas and air passes through the strainer or gauze D into the combustion
chamber within the incandescent mantle and immediately finds there air for combus-
tion which air is conveyed through the pipe A directly from the outside through
openings e in the cap E into the interior of the incandescent body. The ignition of
the mixture of gas and air takes place therefore more quietly without any noise or
the least explosion as air does not directly enter through the incandescent body.
For the same reason the combustion is more complete than hitherto.
Further by the arrangement of the air supply pipe A in the longitudinal axis of
the burner, the result is attained that for lighting from a distance the igniting
connections such for instance as the lighting pipe K with pilot flame (Figure 1) or
with the flame shown in Figure 6 or with the electric lighting device shown in
Figure 7 may be conveyed in the most convenient manner into the interior of the
pipe A up to the closing cap E, so that the internal ignition takes place in the centre
of the incandescent body. By the constant inflow of the air for combustion into the
interior of the pipe A the ends of this lighting device are constantly cooled and
protected from destruction. In the devices hitherto employed such lighting devices
were situated in the incandescent chamber of the incandescent mantle and were not
cooled and they therefore became extremely soon defective and unuseable so that
these means of lighting had soon to be discontinued.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is :-
°
1. An incandescent gaslight burner, characterized by the air pipes being prolonged
upwards and carrying the burner sieve and the incandescent body, and by there being
a separate air supply pipe (A) arranged in the longitudinal axis, said pipe being
carried at the top through the burner gauze (D) and bearing a cap (E) provided with
perforations (e) by which means air can pass directly into the interior of the incan-
descent body and assist the combustion, and the lower end of said pipe being arranged
to open into the larger internal pipe (H) of the gas nozzle (G) so that air strikes
against the outflowing gas both internally and externally, thus securing a more
thorough admixture of the gas and air substantially as herein before described.
2. In an incandescent gaslight burner such as described the arrangement of slots
in the lower part of the same in such a way that the upper part of the said burner
which carries the incandescent mantle is elastically yieldable in all directions, whereby
if the lamp receive jolts or shocks the susceptible incandescent body is not damaged,
substantially as described.

page_text: 3. In an incandescent gaslight burner such as described having a yielding burner
pipe, the arrangement of mounting the lamp gallery separately from the upper
yielding part of the burner (B) either on the lower rigid part of the same or on
another fixed point of the lamp, substantially as described.
Dated thin 10th day of 10no
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.