Improvements in Appliances for use with Gas Lamps for Producing Light by Incandescence.
Year: 1890

page_text: Date of Application, 23rd July, 1890
Complete Specification Left, 9th Apr., 1891-Accepted, 9th May, 1891
PROVISIONAL SPECIFICATION.
Improvements in Appliances for use with Gas Lamps for Producing
Light by Incandescence.
I, ARTHUR HEALD of 171 Queen Victoria Street in the City of London of
no occupation do hereby declare the nature of this invention to be as follows :—
Hitherto what are known as mantles used in the Welsbach system of producing
light from gas by incandescence have been suspended from a ring at the upper end
of a wire, the lower end of which is attached to the gallery or burner of the lamp.
After a time this wire bends, which throws the mantle out of the centre of the gas
flame, thus diminishing the light emitted, as well as frequently causing the breakage
of the chimney.
Now my invention relates to a novel method of supporting the mantle and is as
follows:-
I form a ring of suitable material, the lower portion of which is of a size to fit into
the top of the lamp chimney, the upper portion being somewhat larger, so as to
form a ledge which rests on the edge of the chimney.
A centre hole of a suitable size is made in this ring and there may be, if desired,
smaller holes for the passage of air round this centre hole.
The mantle is attached to this ring in the usual way, which simply rests on the
top of the chimney, the mantle being inside the latter, its lower end surrounding the
burner which supplies the gas for rendering it incandescent.
The chimney to be used is shorter than that employed heretofore, its length being
governed by that of the mantle..
If a greater length of chimney be required, in order to increase the current of
air, the ring which supports the mantle should have its upper edge made with a
ledge similar to that on its lower edge, on which a second chimney of any required
length can be fixed.
1 r 1
1000
ARTHUR HEALD.
COMPLETE SPECIFICATION.
Improvements in Appliances for use with Gas Lamps for Producing
Light by Incandescence.
I, ARTHUR HEALD of 171 Queen Victoria Street, in the City of London, of
no occupation, 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 :-
Hitherto, what are known as mantles, used in the Welsbach system of producing
light from gas by incandescence, have been suspended from a ring at the upper end
of a wire, the lower end of which is attached to the gallery or burner of the lamp.
After a time this wire bends, throwing the mantle out of its central position relative
to the gas flame, thus diminishing the light, as well as frequently causing the
breakage of the chimney.
Now, my invention relates to a novel method of supporting the mantle whereby
these disadvantages are obviated, and the central position of the mantle relative to
the burner is assured.
In carrying out my invention I proceed as follows; assisted by the accompanying
sheet of drawings.

page_text: clay, porcelain or other refractory substance, the lower part a of which is of a size
to fit easily into the open top of the lamp chimney or globe, the upper portion 6
being somewhat larger so as to form a ledge which rests on the upper edge of the
chimney or globe B. A. hole c of suitable size in the centre of the disc A, for the
insertion and support of the mantle C, is made therein, and in order to allow of
the free circulation of air within the chimney or globe, the disc A may be per-
⚫forated with a number of holes d round the central hole c. The mantle C is
attached to the ring or disc A in the usual way, the upper portion e being drawn
through the hole cand turned over its edge as shown, and which disc simply rests
on the top of the lamp chimney or globe B, within which latter is suspended the
mantle C, its lower end surrounding the burner D which supplies the gas for
rendering the mantle incandescent.
Instead of a ring or disc as above described to fit the open top of the chimney or
globe, a small ring provided with a number of radial tags or projections as shown
in Figure 5 may be employed. In this form the projections f are of a length to
exceed the diameter of the lamp chimney or globe B, upon the upper part of which
said projections rest, the ring E from which the mantle C depends assuming a
central position relative to the burner D.
Instead of the ring or disc A. or smaller ring E with its radial projections f
being supported by the chimney or globe B as above described, I may employ a
ring F Figure 3 with wire support or supports g, straight or curved, secured to a
sleeve embracing the burner D, or, if desired, attached to said burner or gallery
of the lamp. The ring to which the mantle is adapted would be supported by the
fixed ring in a similar manner as when resting upon the upper end of the lamp
chimney or globe B.
In the employment of the last described arrangement in conjunction with the
ring E and its projections, the ring F, secured to the burner D or sleeve embracing
said burner, may be provided with recesses or depressions into which take the ends
of the tags or projections f.
The chimney B to be used in the above described methods of supporting the
mantles C, is shorter than that hitherto employed, the length thereof being
determined by the length of the mantle; and if, in order to increase the current of
air, a chimney of greater length is considered desirable, the ring A which carries
the mantle C, should have a ledge formed upon its upper side similar to that upon
its under side, upon which a second chimney of any required length may be
placed.
Instead of the ring carrying the mantle being formed with a ledge as described
to fit on to and within the chimney, globe or ring with wire support, it may be
bevelled or made conical as regards its periphery, the upper edge being of greater
diameter than the lower. It would thus be prevented from slipping through the
chimney, globe or ring with wire support, but would be held in its position when
placed thereon.
In case the open top end of the chimney or globe B should be larger than is
considered desirable to make the ring which carries the mantle C, the difference
between the sizes must be made up by the use of a loose ring formed to fit into the
top of the chimney or globe, and into which the mantle ring in its turn shall fit.
At Figure 6 is shown a sectional elevational view of a disc or ring G carrying the
mantle and supported centrally by a rod or wire h passing up from the centre of
the burner. This disc or ring G has a diametral bridge k formed thereon, in the
enlarged centre of which is a conical hole m, shown also in dotted lines in the
plan Figure 7. Into this conical hole m takes the end n of the supporting rod h,
or said disc may be supported in any other convenient 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 :-
First In incandescent gas lamps; the adaptation thereto and employment

page_text: therewith of a disc or ring serving as a carrier for the mantle, having a ledge formed
thereon and adapted to fit on to and within the open top end of the gas chimney or
globe or upon an independent ring supported by a rod or wire substantially as
herein described and shown in the accompanying drawings.
Second-The employment in incandescent lamps of a ring from which the mantle
depends, having tags or projections formed thereon whereby the ring is supported
either directly upon the edge of the upper end of the lamp chimney or globe, or
upon an independent ring fixed to and supported by a rod or wire secured to
the lamp burner or gallery substantially as herein described and shown in the
drawings.
Third: The employment in incandescent gas lamps of a ring to which the mantle
is adapted, having a bridge formed thereon whereby said disc is supported centrally
substantially as described and set forth.
2
11001
ARTHUR HEALD.