Inverted Regenerative Incandescent Gas Burners or Lights.
Year: 1897

page_text: Date of Application, 11th Feb., 1897
Complete Specification Left, 20th Aug., 1897-Accepted, 13th Nov., 1897
PROVISIONAL SPECIFICATION.
Inverted Regenerative Incandescent Gas Burners or Lights.
HENRY ANDREW KENT The Limes, Bounds Green, N., do hereby declare the
nature of this invention to be as follows:-
This invention has for its object the production of Incandescent gas lights or
burners the mantle or lighting medium hanging under the burner thus giving
a down light free from shadows.
The ordanary mantles such for example as the Welsbach can be used altho one
of larger diameter and shorter length may be adopted or a series of threads, scrolls
or the like may be the illuminating medium.
I may arrange three or more mantles in one burner. The whole being sur-
rounded by a semi circle or pear shaped glass.
In carying out my invention I construct one or more tubes these tubes terminate
with a bend to the upward part of tubes I attach at its lower end, jets of the
atmospheric or bunsun form to the other or downward bend, I fit a burner
which consists of a cone, tube or the like of Steatite or any suitable refractory
material, such burner being perforated or slotted: outside this burner I hang
or otherwise attach the mantle or light giving medium. Such attachment may
be made by a spring for preventing vibrations.
The whole being enclosed by a glass or globe with or without a chimney.
The action of said device is as follows:
Gas and air enters at bottom acends the upward portion of tube this being
longer than the downward part, by its superior pressure prevents back ignition.
I may surround the mantle by a inner chimney of glass or mica such chimney
being betwen the burner and outer globe.
By the above means I produce an effective Incandescent downward light having
no metalic fittings directly under burner. Such being by means of the ascending
heat Regenerative.
Dated this 11th day of hob 1907
COMPLETE SPECIFICATION.
Inverted Regenerative Incandescent Gas Burners or Lights.
I, HENRY ANDREW KENT of The Limes Bounds Green, in the County of
London, 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:—
My Invention relates to the class of gas lamps known as incandescent gas
lamps and has for its object to produce a lamp of this class, which gives a down-
ward light free from shadows such as are given in such lamps as hitherto made

page_text: owing to there being a burner and supporting parts situated beneath the Welsbach,
or like mantle, used. According to my Invention I employ mantles of the
Welsbach, or similar type, or the equivalent of such mantles, such as a series
of threads, or scrolls, made from like material, the mantles used according to
my Invention may however be larger in diameter, and shorter in length, than
are the mantles used with incandescent gas lamps as hitherto made. I employ
also a tube in connection with the gas supply pipe the said tube rising from
the gas supply pipe and then being turned downwards after the manner of an
inverted syphon.
To the end so turned down I attach a burner which may
consist of a cone, or tube, or the like, of steatite, or other refractory material,
perforated, or slotted, for the exit of a mixture of air and gas the gas being
supplied by a nozzle in the uprising tube, in which tube in proximity to the
nozzle are openings for air to enter and mix with the gas on its way to the burner
after the manner of what are known as atmospheric gas burners, or Bunsen
burners. To the turned down end of the tube and surrounding the burner I
attach, so as to depend from the said end, the mantle or equivalent which is to
be rendered incandescent. The attachment may be made by a spring, or springs,
to protect the mantle or the like from vibration. A globe surrounds the burner
and mantle, or the like, a chimney being used or not as desired.
I may employ one, two, or more, such burners within one globe in accordance
with the light required, and any required number of lamps, thus made, may be
used in connection with a bracket, or gaselier, of any desired shape.
Figure 1 of the accompanying drawing represents a lamp with a single burner
arranged in accordance with my Invention. Figures 2 and 3 represent in vertical
section and in horizontal sectional plan of underside respectively, a lamp in which
three burners are contained.
Referring first to Figure 1. From the bracket A which is of any required
design and which has a gas passage and tap a as usual, rises a pipe B, the upper
end of which is turned down and carries at its lower end a burner of the mixture
of gas and air which is supplied thereto the gas issuing by a nozzle at b and
drawing in air by the perforations at 62. To the lower end of the turned down
end of the tube B and surrounding the burner and supported by the spring
clips is a mantle D of refractory material such for example as is used for the
Welsbach mantles. c are carriers secured to the turned down part of the tube B
to carry the globe C enclosing the burner and mantle.
When the gas tap a is turned on gas passes into the tube B by the nozzle b
and draws in air by the perforations at 62 and the mixture of gas and air passes
up along the pipe B and down the turned down end thereof and issues at the
burner within the mantle D where the mixture is ignited and renders the mantle
incandescent and owing to the absence beneath the burner of parts which are
obstructive to light a shadowless downward light is obtained. As the upwardly
projecting part of the tube B is longer than the turned down part carrying the
burner back ignition is prevented. There may be a transparent chimney sur-
rounding the burner inside the globe. The incoming gas and air are heated by
the ascending heat from the burner before the said gas and air issue from the
burner by which a regenerative effect and proper consumption of the gas are
insured.
Figures 2 and 3 shew a lamp in which the descending gas pipe A provided
with a tap at a supplies gas to three pipes B and burners with mantles each arranged
as described with reference to Figure 1 and all enclosed in a globe C the corres-
ponding parts being marked with the same letters of reference. Similarly I may
combine two or other number of burners in one lamp.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:
1 In an incandescent as lamp a tube which rises and then is turned down,

page_text: the uprising part being provided with means for admitting gas and air, and the
turned down part carrying a burner surrounded by a mantle, or the like, of
refractory material, the burner and mantle or the like being surrounded by a
protective glass, or globe, substantially as herein before described.
2. In an incandescent gas lamp a burner directed downwards and provided
with a mantle, or the like, situated around and beneath the burner, substantially
as hereinbefore described.
3. In an incandescent gas lamp a tube which rises and then is turned down
the uprising part being provided with means for admitting gas and air and the
turned down part carrying a burner and a surrounding mantle or the like and
being of less length than the uprising part of the tube so as to prevent back
ignition, substantially as herein before described.
4. The arrangement and combination of parts constituting an incandescent gas
lamp without parts obstructive to light beneath the burner, or burners, sub-
stantially as hereinbefore described and illustrated in the accompanying drawings.
Dated this 20th day of August 1897.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.