Improvements in and connected with Mantles for Incandescent Lights.
Year: 1897

page_text: Date of Application, 11th Oct., 1897
Complete Specification Left, 28th June, 1898-Accepted, 3rd Sept., 1898
PROVISIONAL SPECIFICATION.
Improvements in and connected with Mantles for Incandescent
Lights.
I, EMIL SKRIWAN, of 4, Gasgasse, Vienna, Austria, Manufacturer of Mantles
for Incandescent-lights, do hereby declare the nature of this invention to be as
follows:
This invention relates to improvements in and connected with mantles for
incandescent-lights.
In order to replace the expensive platinum wire used for suspending the mantles
of incandescent-lights by a cheaper material, a number of experiments have been
made wherein specially, spun or twisted asbestos and metal wire, such as iron,
nickel, copper, silver and their alloys have been used.
Spun or twisted asbestos has been found to partly serve the purpose but not
durable enough and renders the transit of the mantles, particularly when placed
upon wire frames, impossible, all the more as the gelatine used to stand transit
injures the asbestos extremely.
Metal wire has been found to be entirely unsuitable, having too low a fusing
point to resist the temperature of the Bunsen flame.
To remedy these defects my invention consists in furnishing metal wire such as
aforesaid with a covering of asbestos wrapped, spun or plaited around the same,
which I have found in practice perfectly resists the temperature generated by the
Bunsen flame and prevents the cracking of the gelatined asbestos.
The said wire may be covered as described by any well known method or machine
suitable for the purpose.
Dated thin 0th day of October 1807
Improvements in and connected with Mantles for Incandescent
Lights.
I, EMIL SKRIWAN, of 4, Gasgasse, Vienna, Austria, Manufacturer of Mantles
for Incandescent-lights, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement: -
This invention relates to improvements in and connected with mantles for

page_text: In order to replace the expensive platinum wire used for suspending the mantles
of incandescent-lights by a cheaper material, a number of experiments have been
made wherein specially spun or twisted asbestos and metal wire, such as iron,
nickel, copper, silver and their alloys have been used.
Spun or twisted asbestos has been found to partly serve the purpose.but not
durable enough and renders the transit of the mantles, particularly when placed
upon wire frames, impossible, all the more as the gelatine used to stand transit
injures the asbestos extremely.
Metal wire has been found to be entirely unsuitable, having too low a fusing
point to resist the temperature of the Bunsen flame.
To remedy these defects my invention consists in furnishing metal wire such as
aforesaid with a covering of asbestos wrapped, spun or plaited around the same,
which I have found in practice perfectly resists the temperature generated by the
Bunsen flame and prevents the cracking of the gelatined asbestos.
The said wire may be covered as described by any well known method or machine
suitable for the purpose.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is: --
In and connected with mantles for incandescent-lights forming the thread by
which the mantle is suspended with a metal core covered with asbestos, all sub-
stantially as and for the purpose set forth.
Dated this 27th day of June 1898.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester.
Agents to Applicant.