Year: 1885

page_text: THOMAS ARTHUR GREENE Gas Engineer 155 Cannon Street E.C. & CHARLES
MAYNARD WALKER Gas Engineer of the same address do hereby declare the
nature of this invention to be as follows:-
The object of our Invention is First to obtain a greater light from the combustion
of the gas-Second-to simplify the construction of the Lamp whereby the same
may be much more economically produced.
At a
In carrying out our invention we use a lamp preferably of a Globular form, with
an upright chimney through which the gas supply passes downwards to the ring
burner For the purpose of heating the air for the combustion of the gas, we use
a simple generator, preferably in the form of a spheroid-this generator is open at
the lower end, and has a passage for the heated air leading to the burning point-
which gradually lessens in diameter until that point is reached-so as to sharpen
the current of air-to the generator and communicating with the inside, are fixed
a convenient number of radial tubes, which passing through the dome or outside
of lamp, and communicating with the atmosphere, form horizontal passages for the
air supply the space below these tubes with the exception of a convenient area in
the centre is fitted with a white fire-clay reflector, or of other suitable material-
the hot air passages above referred to being made of the same material.
convenient distance below the burner we fix an inverted cone of fire-clay or other
material, upon the upper part of which the downward current of hot air impinges
and is directed outwards to the flame, and upon the lower part or point of the cone
the upward current of air admitted through a small opening in the glass-impinges
and is directed to the flame-the form of a cone allowing reflected light upon every
part of its surface--we enclose the lower part of the lamp with glass preferably
affixed to a hinged ring-Surrounding the air tubes and the generator is a con-
venient space where the products of combustion pass to the chimney, upon the gas
being lit and the lower part of the lamp closed-the heat of the flame creates a
draught in the chimney which causes the atmospheric air to be drawn into the
generator through the radial tubes-the passage for which air being in immediate
contact with the heat from the flame imparts a suitable heat to the air required for
combustion of the gas-the air when heated being drawn to the burning point
by the same means.

page_text: THOMAS ARTHUR GREENE Gas Engineer 155 Cannon Street, City of London;
and CHARLES MAYNARD WALKER Gas Engineer of the same address do hereby
declare the nature of our invention for IMPROVEMENTS IN REGENERATIVE GAS
LAMPS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
In carrying out our Invention we use a Lamp of a Globular form, having an
upright chimney, through which the Gas supply (in the case of a suspension Lamp)
passes downwards to the burner.
We are aware that the use of heated air in an enclosed gas Lamp is not novel,
several modifications of the idea having been in use for many years past, and our
object is to simplyfy the necessary parts so that the lamp may be more economically
produced For the purpose of heating the air for the better combustion of the Gas,
we use a simple generator, (preferably of the form of a spheroid and placed
immediately above the flame, this generator is open underneath, and is continued
from thence in the form of a circular passage, diminishing in diameter towards the
burner, so that the air current to the burner is sharpened; to this generator and
communicating with the inside thereof are attached a convenient number of
horizontal radial tubes (8 shewn in the drawing) which passing through the outside
of the Lamp and communicating with the atmosphere form passages for the air
supply, in this generator, and opposite to the ends of the radial tubes we fit one or
more coils of fine gauze to break up the current of air to the burner; the space
below these radial tubes, with the exception of a sufficient area in the centre is
fitted with a reflector of white fire-clay, enamelled iron, or other suitable material,
this reflector also forms a shield, or baffle, in guiding the currents of air, and the
products of combustion-therefore we form the under part thereof of a convex
shape, with its outer edge flattened and through this edge we drill a convenient
number of holes (about th of an inch in diameter) 16 shewn in drawing-which
form passages for the products of combustion, in addition to the main passage
thereof, and thus influence the steadiness of the flame; we prefer to form the edge
of the main passage with a rim downwards, the space between the inside of this
rim, and the outside of the air passage above referred to forms the main outlet for
the products of combustion, which pass through the spaces between the radial tubes
up the chimney, and thence into the atmosphere-we use a ring burner which
when fitted into its position is directly in the centre of the air passage and at a
convenient distance below it, beneath the burner we attach an inverted cone of
fireclay, metal, or other material which forms a baffle upon which the heated air in
its downward current impinges and is directed outwards to the under edges of the
flame, this form of cone moreover shows reflected light upon every part of its
surface around the burner we use circular plates to deflect the current of air to
the burner, the circular spaces between which, form air channels-we enclose the
lower part of the lamp with glass preferably fitted to a hinged ring with a bayonet
catch The action of the Lamp is as follows-upon being lit, and the lower part
closed, the heat causes a draught in the chimney, and as the lamp is closed, there is

page_text: no admission of air, except through the radial tubes, a downward draught of air
from the generator to the burner is thus caused, and the generator being in close
contact with the flame, the air becomes heated on its way, sufficiently raising the
temperature of the flame to complete combustion.
Having now particularily described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is
.
The combination of parts, substantially as herein before described, and set forth
in the drawings, as and for the purposes of contructing Regenerative gas-lamps.
Dated this 5th day of August 1886.
CHARLES MAYNARD WALKER.
THOMAS ARTHUR GREENE.