sosedin Summit in BAINOG ANTTANSADUROUT UI SɩuemeaðiⱭmi and in the Treatment of Mantles Produced therefrom.
Year: 1887

page_text: Date of Application, 16th Aug., 1887
Complete Left, 15th May, 1888
☐ Complete Accepted, 15th June, 1888
[Communicated from abroad by CARL AUER VON WELSBACH, of No. 63, Gumpendorfer
Strasse, in the City of Vienna, Austria, Doctor of Philosophy.]
sosedin Summit in BAINOG ANTTANSADUROUT UI SɩuemeaðiⱭmi
and in the Treatment of Mantles Produced therefrom.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane in the
County of Middlesex, Fellow of the Institute of Patent Agents, do hereby declare the
nature of this invention to be as follows:-
This invention relates to the production of incandescence bodies, prepared from
the earths of the rarer metals, such as Cerium, Didymium, Lanthanum, Thorinum and
Zirconium as described in the Specifications to Patents No. 15286 of 1885 and 3592
of 1886. It has been found that by using certain salts of these and other metals,
incandescence bodies are obtained which, although not of such advantageous
application as those described in the said patents, may be employed with good effect
for strengthening the incandescence mantles formed of the latter substances on
account of their property of becoming more or less vitrified by the heating process.
The said salts are:
1. The niobates of the rarer earths, such as the niobates of Thorinum, Beryllium
oxide, Cerium oxide, also the Niobates of Zirconium, Magnesia, Calcium oxide, and
Alumina.
2. The Tantalates of the above named earths. These substances can be mixed with
each other either according to their stoichiometrical proportion or with preponderance
of one or more thereof.
3. The Silicates of the said earths, either alone or mixed together in their stoichio-
metrical proportions.
4. The Titanates of the said earths, and mixtures thereof.
Παρ
5. The Phosphates of the said earths, and mixtures thereof.
6. Also, mixtures of the several salts enumerated under the preceding heads may
be

page_text: In using these various salts, the mantles, after impregnation by the salts of the
rarer earths, as described in the above named previous patents, are impregnated or
coated a second time with a solution of the above named salts or mixtures thereof, by
preference at the upper end of the mantle only where it is supported by the platinum
wire, after which the mantle is subjected to the action of the Bunsen flame in the
manner described in the said prior patents, for burning away the fibrous material and
converting the salts into oxides.
In order to facilitate the burning away of the fibre, the salt solution with which the
mantle is to be impregnated, whether the solutions above described, or those described
in the said prior patents, may with advantage have mixed therewith some ammonium
nitrate.
For rendering the prepared incandescence mantles better able to stand transport,
or rough usage, they may with advantage be dipped into a very weak solution of
caoutchouc or collodion, which is allowed to drain off and solidify and is afterwards
burnt off on first subjecting the mantle to the heat of the Bunsen flame.
Dated this 16th day of August 1887
ABEL & IMRAY,
Agents for the Applicant.

page_text: Improvements in Incandescence Bodies for Illuminating Purposes
and in the Treatment of Mantles Produced therefrom.
I, OLIVER IMBAY of No. 28 Southampton Buildings Chancery Lane in the County
of Middlesex, Fellow of the Institute of Patent Agents 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 the production of incandescence bodies prepared from the
earths of the rarer metals, such as Cerium, Didymium, Lanthanum Thorinum and
Zirconium as described in the specifications to patents No. 15286 of 1885, and 3592
of 1880. It has been found that by using certain salts of these and other metals,
incandescence bodies are obtained which, although not of such advantageous
application as those described in the said patents, may be employed with good effect
for strengthening the incandescence mantles formed of the latter substances, on account
of their property of becoming more or less vitrified by the heating process.
The said salts are:-
1. The niobates of the rarer earths, such as the niobates of Thorinum, Beryllium
oxide, Cerium oxide, also the niobates of Zirconium Magnesia, Calcium oxide, and
Alumina.
2. The Tantalates of the above named earths. These substances can be mixed with
each other either according to their stoechiometrical proportion, or with preponderance
of one or more thereof.
3. The silicates of the said earths, either alone or mixed together in stoechiometrical
proportions.
4. The Titanates of the said earths and mixtures thereof.
5. The Phosphates of the said earths, and mixtures thereof.
6. Also, mixtures of the several salts enumerated under the preceding heads may
be used.
In using these various salts, the mantles after impregnation by the salts of the rarer
earths as described in the above named previous patents, are impregnated or coated a
second time with a solution of the above named salts or mixtures thereof, by preference
at the upper end of the mantle only, where it is supported by the platinum wire, after
which the mantle is subjected to the action of the Bunsen flame in the manner
described in the said prior patents, for burning away the fibrous material and
converting the salts into oxides.
In order to accelerate or facilitate the burning away of the fibre, the salt-solution
with which the mantle is to be impregnated, whether the solutions above described, or
those described in the said prior patents, may with advantage have mixed therewith
some ammonium nitrate.
For rendering the prepared incandescence mantles better able to stand transport,
or rough usage they may with advantage be dipped into a very weak solution of

page_text: caoutchouc or collodion which is allowed to drain off and solidify and is afterwards
burnt off on first subjecting the mantle to the heat of the Bunsen flame.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
1. The use, in the preparation of incandescence bodies such as are herein referred
to, of either the niobates of the rare earths and of magnesia, or the Tantalates
thereof, or the Silicates thereof, or the Titanates thereof or the Phosphates thereof, or
mixtures of any two or more of these salts, for coating the upper ends of the mantles
after these have been coated with the salt solutions described in the specifications to
the within mentioned prior patents, substantially as and for the purposes described.
2. The admixture of ammonium nitrate with the salt solutions referred to in the
preceding claim, and in the Specifications of the hereinbefore mentioned prior patents
for the purpose herein described.
ABEL & IMRAY,
Agents for the Applicant.