Improvements relating to Incandescence Bodies for Incandescent Gas Lamps.
Year: 1893

page_text: Date of Application, 19th June, 1893
Complete Specification, Left, 19th Mar., 1894-Accepted, 12th May, 1894
PROVISIONAL SPECIFICATION.
Improvements relating to Incandescence Bodies for Incandescent
Gas Lamps.
I, GUSTAV ADOLF ERNST SCHNEIDER, Manufacturer, of Innere Johannis-
strasse, Chemnitz, in the Kingdom of Saxony, do hereby declare the nature of this
invention to be as follows:-
Incandescence bodies made from impregnated woven fabric in the manner
hitherto known, have the drawback, that after the textile material has been
burnt, they form only a skeleton of ashes, which easily crumbles to pieces.
To avoid this defect, I produce an incandescence body, which contains, in
addition to the ashes, a fireproof material, by weaving or knitting from fireproof
threads or fibres of platinum, quartz, silica, asbestos etc., and from combustible
fibrous materials, a mixed fabric, impregnating the same with a suitable saline
solution, and calcining or burning it, so that after the burning of the combustible
fibres there remain incombustible fibres or threads coated with ashes.
The incombustible thread may, for instance, be spun or twisted together with
several cotton threads and a hose or tube may be knitted from a composite thread thus
produced, or it may be plaited or woven from two or more such composite threads.
The finished tube or hose is then impregnated with saline solution, dried, and
finally the combustible threads are removed by calcining.
Or a fabric woven from incombustible threads may be repeatedly dipped into
a suitable liquid or emulsion in which finely divided combustible fibres are floating
or suspended, and thereby coated with a layer of fibres which is subsequently
impregnated, and then burnt to ashes.
The fibres may be impregnated either before they are applied to the solid body
or base, or after they have been applied to the same.
Or a fabric may be woven or knitted or plaited, in which fireproof threads are
alternating with threads of combustible and absorbent material.
Dated this 19th day of June 1893.
FAIRFAX & WETTER,
Agents for the Applicant.
COMPLETE
SPECIFICATION.
Improvements relating to Incandescence Bodies for Incandescent
Gas Lamps.
I, GUSTAV ADOLF ERNST SCHNEIDER, Manufacturer, of Innere Johannis-
strasse, Chemnitz, in the Kingdom of Saxony 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 :-
Incandescence bodies or "hoods" made from impregnated woven fabric in the
usual manner, have the drawback, that after the textile material has been burnt,
they form only a skeleton of ashes, which easily crumbles to pieces.
To avoid this defect, 1 produce an incandescence body which contains in addition
to the ashes a fireproof skeleton, and this by a method different from that described
in Mactcar's Specification No. 4124 of 1889.
For this purpose a fabric woven, knitted or plaited from incombustible threads is
repeatedly dipped into a suitable liquid or emulsion in which finely divided
TD71

page_text: combustible and absorbent fibres are floating or suspended, and thereby coated
with a layer of organic fibres, which is subsequently impregnated, and dried and
then burnt to ashes.
The fibres may be impregnated with the usual solution of luminiferous earthy
matter, either before they are applied to the solid body or base, or during or after
this process, and the liquid or emulsion mentioned above may contain a suitable
adhesive substance. .
Or a fabric may be woven or knitted or plaited in which fireproof threads are
alternating with threads of combustible and absorbent material, the whole being
afterwards dipped into the liquid or emulsion described above.
The incombustible threads may consist of platinum, quartz, asbestos or other
suitable substance, and may be formed into a flat sheet or a hose by weaving,
knitting, or analogous process.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. The manufacture of an incandescence body or "hood" for gas lamps, by
making a woven or analogous fabric from incombustible threads, dipping it
repeatedly into a solution or emulsion containing or carrying finely divided
combustible fibres, so as to form a coating of the latter, impregnating the said
finely divided fibres, either before, during or after the process, with a suitable
saline solution, drying and calcining, substantially as described.
2. An incandescence body or hood for gas lamps, made from a fabric composed
of incombustible threads absorbent organic fibres and the usual luminiferous earthy
matter in the manner substantially as described.
Dated this 19th day of March 1894.
FAIRFAX & WETTER,
433, Strand, London, Agents.