An Improved Process for the Manufacture of Fluid for Impregnating Bodies or suitable Fabrics, Threads, Fibres or the like, for Illuminating or Lighting Purposes.
Year: 1896

page_text: Date of Application, 19th Nov., 1896-Accepted, 23rd Jan., 1897
COMPLETE SPECIFICATION.
An Improved Process for the Manufacture of Fluid for Impregnating
Bodies or suitable Fabrics, Threads, Fibres or the like, for
Illuminating or Lighting Purposes.
I, BODO PUOHMÜLLER of 18, Brunhildatrasse, Schöneberg near Berlin in the
Empire of Germany, Merchant, 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:-
This invention relates to a simplified process for the manufacture of fluid for
impregnating such incombustible or combustible bodies, fabrics, threads, fibres or
the like as are suitable for lighting purposes. The value of this process consists
not only in the simplification of the manufacture of the fluid hitherto employed,
but essentially in the cheapness of the substances employed therefor, and in the
thereby resulting cheapness of the manufacture itself, whereby the impregnated
lighting bodies or fabrics are rendered accessible to a larger circle of the public
than has hitherto been the case. In illuminating power and duration, the
illuminating bodies manufactured with the fluid made by the hereinafter described
process equal those of the best makes previously known and only differ from them
advantageously by a greater durability or power of resisting shocks.
The process for the manufacture of the above mentioned fluid is as follows:-
Oxide of magnesia and oxide of barium are mixed with or rather dissolved in
suitable acids, such for instance as bismuth acid, antimonic acid, meta-antimonic
acid, citric acid, aconitic acid, itaconic acid, citraconic acid, oxyallyltricarbonic
acid or with a suitable combination of several suitable acids, or of other acids
which produce a similar or better effect than was intended by the acids herein before
mentioned and by means of the action of heat are evaporated until a vitreous or
salt-like residue is formed. This solidified residue, or rather the result of the
evaporated constituents forming a chemical compound, is pulverized, and this fine
powder is then dissolved in another suitable acid, such, for instance, as nitric,
tartaric dioxylsuccinic pyrotartaric, malic, succinic or forinic acid or any suitable
combination of several suitable acids, or of other acids which produce a similar or
better effect than those herein before mentioned. Finally, this solution may he
mixed with distilled water, whereupon the fluid is ready for impregnating fabrics
or materials, for instance of a textile nature. By means of the above mentioned
interchangeability of the acids, and with the above mentioned combination of
several or different acids, there may be obtained lights of different colour suitable
to varying requirements, as is desirable in the mauufacture of incandescent bodies
or mantles.
Instead of the above mentioned oxide of magnesia and oxide of barium, oxides
of strontium and uranium may be employed, which on being treated with suitablo
acids and distilled water and dissolved, yield also a fluid capable of being used.
The oxide of magnesia and oxide of barium dissolved by means of acid, and
evaporated by means of heat, may also after they have formed the vitreous or
salt-like residue herein before mentioned, have uranium oxide added to them, and
both reduced to powder and treated together with one of the last mentioned acids,
or they may be dissolved therein. Instead of the oxides of magnesia and barium,
oxides of magnesia and strontium may also be employed in the manner hereinbefore
described

page_text: The nature and method of the chemical combination of the substances herein-
before mentioned, with one another or during the hereiubefore described treatment
of the same, are unknown to the inventor.
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
olaim is :-
1. An improved process for the manufacture of fluid for impregnating bodies
or suitable fabrics or the like of combustible or incombustible materials for
illuminating or lighting purposes characterized by the use of oxide of magnesia
and oxide of barium which are treated with or dissolved in a suitable liquid or
acid, then evaporated together with the same under the action of heat, and the
vitreous or salt like residue pulverized, again dissolved in another liquid or acid,
and mixed with distilled water according to the nature of the material to be
impregnated substantially as described.
2. In the herein described process of manufacture, the replacement of the oxides
of magnesia and barium by oxides of magnesia and strontium substantially as set
forth.
3. In the herein described process of manufacture, the addition of strontium- or
uranium- oxide, or both, to the oxides of magnesia and barium before the second
manipulation or treatment of the pulverized residue with suitable liquids or acids
substantially as set forth.
4. In the herein described process of manufacture, the use instead of oxides of
magnesin and barium of strontium- aud uranium- oxides, which are treated with
suitable acids and distilled water substantially as described.
Dated this 17th day of November 1896.
WM. P. THOMPSON & Co.,
Of 6 Lord Street, Liverpool, Agents.