provements in the Manufacture of Incandescence Bodies for Illuminating Purposes.
Year: 1896

page_text: Date of Application, 23rd Jan., 1896
Complete Specification Left, 23rd Nov., 1896-Accepted, 24th Dec., 1896
PROVISIONAL SPECIFICATION
Improvements in the Manufacture of Incandescence Bodies for
Illuminating Purposes.
I WILLIAM HUMPHREY WHEATLEY, of the Firm of Wheatley & Mackenzie,
Engineers and Patent Agents, of 40 Chancery Lane, London, do hereby declare
the nature of this invention-a communication to me from Friedrich Woernle, of
26 Militaerstrasse, Stuttgart, in the Empire of Germany-to be as follows:-
This invention has for its object the production of hoods or mantles for gas or
other burners which by the action of the flame of the burner are rendered
incandescent and thereby greatly increase the illuminating power of the flame.
According to my invention I impregnate the hood or mantle, which may be
made of any suitable fabric, with the solutions of salts hereinafter specified, the
mantle being afterwards subjected to the heat of a flame in the ordinary manner so
that the fabric is consumed, while the frame or skeleton, consisting chiefly of the
oxides of the metals employed, remains, and which when heated to incandescence,
emits a powerful light.
The formulæ of the two solutions to which my invention relates, and which I
have found to give excellent results in practice, are as follows:
Thorium nitrate
Erbium do.
1
Zirconium do.
Magnesia do.
Zirconium nitrate
Erbium .do.
2
Thorium do.
Strontium do.
12
2:5
parts
"
9
"
1-25
"
12.25 parts.
9
"
2.5
"
1.25 "
The hood or mantle having been made of any suitable fabric to the desired form
is saturated in an aqueous solution made according to either of these formulæ and
dried in the ordinary manner when it is fit for use, the first application of a flame
consuming the fibrous constituent and leaving only the frame or skeleton of
metallic oxides remaining.
Dated this 23rd day of January 1896.

page_text: COME LEIDDI MUITICATION.
Improvements in the Manufacture of Incandescence Bodies for
Illuminating Purposes.
I, WILLIAM HUMPHREY WHEATLEY, of the Firm of Wheatley & Mackenzie,
Engineers and Patent Agents of 40 Chancery Lane London, do hereby declare
the nature of this invention-a communication to me from Friedrich Woernle, of
26 Militaerstrasse Stuttgart, in the Empire of Germany-to be particularly described
and ascertained in and by the following statement :-
This invention has for its object the production of hoods or mantles for gas or
other burners which, by the action of the flame of the burner, are rendered
incandescent and thereby greatly increase the illuminating power of the flame.
According to my invention I impregnate the hood or mantle, which may be made of
any suitable fabric, with the solutions of salts hereinafter specified, the mantle
being afterwards subjected to the heat of a flame in the ordinary manner so that
the fabric is consumed while the frame or skeleton, consisting chiefly of the oxides
of the metals employed, remains and which, when heated to incandescence, emits a
powerful light.
The formulæ of the two solutions to which my invention relates, and which I
have found to give excellent results in practice, are as follows:
Thorium nitrate
Erbium
1
"
Zirconium
"
Magnesia
Zirconium nitrate
-
"
Erbium
2
"
Thorium
Strontium
"
"
-
12
parts
2.5
"
9.0
"
1.25
"
12.25 parts
9.0
"
2.5
وو
1.25
"
The hood or mantle having been made of any suitable fabric to the desired form
is saturated in an aqueous solution made according to either of these formulæ and
dried in the ordinary manner when it is fit for.use, the first application of a flame
consuming the fibrous constituent and leaving only the frame or skeleton of metallic
oxides remaining.
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 :-
The manufacture of incandescence bodies for illuminating purposes impregnated
with substances named substantially according to either of the two formulæ above
given.
Dated this 19th day of November 1896.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.