Improvements in Illuminant Appliances for Gas and other Burners.
Year: 1895

page_text: Date of Application, 3rd Dec., 1895-Accepted, 22nd Feb., 1896
COMPLETE SPECIFICATION.
Improvements in Illuminant Appliances for Gas and other Burners.
JOHN FOYSTER BURGESS 85 Reighton Road Upper Clapton in the County of
Middlesex Writer 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 :-
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My invention relates to the construction of an illuminant appliance in the form
of a "core
or centre piece to be rendered incandescent by gas or other
burners.
The core or centre piece to be manufactured of any material impregnated with
refractory compounds or other suitable materials in any shape or form of a porous
nature or construction that can be used for incandescent lighting by gas or other
burners.
"
The "core or centre piece can be made in various shapes particularly for
burning on centre draught atmospheric burners. It is suspended on a holder so
that the inner surface of the annular flame passes up the outside of core or centre
piece the flame enshrouding or enveloping the core or centre-piece; thus producing
an incandescent light of great brilliancy.
The accompanying drawing illustrates the application and relation of core or
centre-piece to burner to whatever type it is applied.
Figure (1) shows an inverted conical core or centre-piece with a spherical top to
show what is meant by various shapes.
Figure (2) shows an outline of the aforesaid inverted conical core or centre-
piece with an addition in outline herein termed a vertical ring or flange.
The core (b) is suspended by holder (c) at (d) as will be seen; the smaller end
of core or centre-piece being downward & central with air supply tube (e) in
centre of head (a). The inverted conical or other shaped core or centre-piece,
can also have a deep flange of the same material of which it is constructed on
uppermost outside edge as at (f) Figure (2) thus forming a vertical ring or flange
at top with a conical projecture, leaving a space between core and vertical ring, or
it can be combined with a mantle, thus having two lighting walls, the inverted
conical or other shaped core or centre-piece inside and a mantle outside.
These methods would enhance the light as the ignited gas would pass between
these walls, and heat both to incandescence, causing it to emit a great light. The
core or centre-piece with the wide vertical flange or ring, can be made in one piece
to be woven just the length of the vertical ring, in excess to the length required
for conical inverted or other shaped core or centre-piece without vertical ring;
then by simply inverting the extra length at the base of the cone or other shape,
the inverted conical or other shaped core or centre-piece with vertical flange or
ring is produced.
The combination of the inverted conical or other shaped cores or centre-pieces
with mantle, can be produced in the same manner.
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.) The construction and use of an illuminant appliance in the form of a core
or centre-piece to be made of material suitable for heating to incandescence on
atmospheric gas, or other burners substantially, as herein described, with reference
to the accompanying drawing.

page_text: (2.) The construction and use of cores or centre-pieces with combinations in the
form of a mantle, or deep vertical ring or flange, for enhancing the light, as herein
set forth.
Dated this 2nd day of December 1895.
JOHN FOYSTER BURGESS.