An Improved Lamp or Lantern for Burning Acetylene Gas.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
An Improved Lamp or Lantern for Burning Acetylene Gas.
I, SALOMON FALK, of the Firm of Falk, Stadelmann & Co., Limited, of
83, Farringdon Road, in the County of London, Lamp Manufacturers, do hereby
declare the nature of this invention to be as follows:-
-
My invention relates to an improved lamp or lantern for burning acetylene gas
and comprises the improvements hereinafter described whereby the requisite
quantity of air is supplied to the flames and the products of combustion are with-
drawn without exposing the flames to the influence of external air currents.
My improved lantern comprises two tubes arranged one within the other the
inner tube serving for the escape of the products of combustion whilst the space
between the two tubes serves for the passage of fresh air.
At the lower end of these tubes is arranged a globe which encloses the burners
the outer tube being enlarged to embrace the edge of the opening in the top of the
globe; the lower end of the inner tube is also enlarged and is formed with an
extension which carries at its lower end a reflector having a central aperture which
opens into the inner tube the burner or group of burners being arranged below
the said reflector and carried by the gas pipe which passes down between the tubes
into the globe.
Around the lower end of the outer tube a series of openings or apertures for the,
admission of air is formed a plate or deflector, which may be perforated, being
arranged adjacent to these apertures to prevent injurious air currents from pass-
ing through the said apertures into the globe.
In the enlarged portion of the inner tube above the reflector is arranged a dis-.
tributor having somewhat the form of an inverted cone which serves to produce
an even distribution of the air and so prevent as far as possible the disturbance
of the flame or flames.
It will be understood that the air for supporting the combustion enters the globe
from the top.
An Improved Lamp or Lantern for Burning Acetylene Gas.
I, SALOMON FALK, of the Firm of Falk, Stadelmann & Co., Limited, of
83, Farringdon Road, in the County of London, Lamp Manufacturers, do hereby
declare the nature of this invention and in what manner the same is to be per-
Price 8d71

page_text: formed to be particularly described and ascertained in and by the following state-
ment;-
My invention relates to an improved lamp or lantern for burning acetylene gas
and comprises the improvements hereinafter described whereby the requisite
quantity of air is supplied to the flames and the products of combustion are with-
drawn without exposing the flames to the influence of external air currents.
My improved lantern comprises two tubes arranged one within the other, the
inner tube serving for the escape of the products of combustion whilst the space
between the two tubes serves for the passage of fresh air.
At the lower end of these tubes is arranged a globe which encloses the burners
the outer tube being enlarged to embrace the edge of the opening in the top of the
globe; the lower end of the inner tube is also. enlarged and is formed with an
extension which carries at its lower end a reflector having a central aperture which
opens into the inner tube the burner or group of burners being arranged below
the said reflector and being carried by the gas pipe which passes down between
the tubes into the globe....
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Around the lower end of the outer tubel a series of openings or apertures for the
admission of air is formed, a plate.or deflector, which may be perforated, being
arranged adjacent to these apertures to prevent injurious air currents from pass-
ing through the said apertures into the globe:
In the enlarged portion of the inner tube above the reflector is arranged a dis-
tributor having somewhat the form of an inverted cone which serves to produce
au even distribution of the air and so prevent, as far as possible, the disturbance
of the flame or flames.
It will be understood that the air for supporting the combustion enters the globe
from the top.
To enable the invention to be fully understood I will describe it by reference to
the accompanying drawings, in which;-
Figure 1 is a vertical section of a lamp constructed according to the invention:
Figure 2 is a sectional elevation of a lamp shewing a modified arrangement for
carrying the globe.
a is the outer tube and 6 is the inner tube forming the upper part of the im-
proved lamp, the inner tube b, as above mentioned, serving for the escape of the
products of combustion and the space c between the two tubes a and b serving for
the passage of fresh air to support the combustion of the acetylene gas as herein-
after described.
The lower part of the tube a is enlarged as shewn at a¹ so as to receive the upper
open end of the globe d and is provided with a series of perforations a² to admit air
to the space c.
a3 is a plate or deflector (which may be perforated if desired)
which is arranged in the vicinity of the perforations or apertures a² to prevent
the formation of currents in the globe d which may disturb the flame.
The lower end of the inner tube 6 is also enlarged as shewn at 6 and is provided
with an extension 62 to the lower end of which is secured a reflector 63, the centre
of which is open.
e, e are the burners which are arranged below the reflector
and f, f are the pipes which carry the said burners and supply gas thereto, the
said pipes branching from the supply pipe and passing down in the space c
between the two tubes a, b. The distance between the burners and the lower edge
of the reflector varies from about 4 to 7 cms., the said distance varying inversely
with the diameter of the burner ring and directly with the diameter of the reflector.
g is the distributor which is formed somewhat in the shape of an inverted
cone, the said distributor being fitted in the enlarged part 61 of the inner tube and
serving to effect an even distribution of the air to avoid the formation of distri-
buting air currents.
In the arrangement shewn in Figure 1 the globe is supported at the bottom upon
a cup or ring d' which is fitted to the extension h from the gas pipes e, e.
case the lamp is lit from a pilot burner i.
In this
In the construction of lamp illustrated in Figure 2 the globe is open at its lower

page_text: end which is supported by a ring j held in place by a bridge-piece j¹ having a
socket adapted to be secured in position upon the extension h by means of a set
screw 2. In this case the lamp is lit from below and the open bottom of the
globe is normally closed by the cover k hinged at k¹ to the ring j and secured in
its closed position by the fastening ².
The globe can be secured to the lamp in any other suitable way; for example
I may employ the method adopted in the well-known Wenham lamps, that is to
say, the globe is supported upon a ring which is hinged at one point and is adapted
to be fastened in position at a point opposite thereto.
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. In a lamp or lantern for burning acetylene gas, the arrangement of two tubes
one arranged within the other, the inner tube being adapted for carrying away the
products of combustion and the space between the two tubes for supplying air to
the upper part of the globe surrounding the burners, substantially as, and for the
purpose, herein before described and as illustrated."
2. In a lamp or lantern for burning acetylene gas of the kind described in
Claim 1, the employment in the inner tube of a deflector and of a reflector, sub-
stantially as hereinbefore described and as illustrated.
3. The combination and arrangement of parts forming the improved acetylene
lamp or lantern hereinbefore described and illustrated in Figure 1 of the accom-
panying drawings.
4. The combination and arrangement of parts forming the improved acetylene
lamp or lantern hereinbefore described and illustrated in Figure 2 of the accom-
panying drawings.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.