File:No. 4 Inverted Mantle with No. 8 Magnesia Ring - DPLA - 83184a7d1fc38599cfceda682431fdd1 (page 1).jpg

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No. 4 Inverted Mantle with No. 8 Magnesia Ring   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Creator
InfoField
Welsbach Gas Light Company
Title
No. 4 Inverted Mantle with No. 8 Magnesia Ring
Description
Unused Welsbach No. 4 Inverted Mantle and No. 8 Magnesia Ring in its original cardboard box from Lindsay Light and Chemical Company. The Welsbach gas mantle is a device made of fibers impregnated with oxides of cerium and thorium, an element that is mildly radioactive. Mantles produce a bright white light when heated with a gas flame; effectively the gaslight equivalent of a filament in an electric lightbulb. Invented in the 1880s by Austrian scientist Carl Auer Von Welsbach (1858-1929), gas mantles were used extensively in street lighting and in gas-powered appliances. The Welsbach gas mantle was the first industrial product to make use of rare earth elements. Welsbach mantels were sewn and then packed into cardboard tubes for shipping and sales. The Lindsay Chemical Company in Chicago took over the Welsbach marketing logo in the early twentieth century and continued the production of mantels compatible with Welsbach products until the mid-1930s.
Date 1890 – 1930
institution QS:P195,Q5090408
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Permission
(Reusing this file)
Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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current20:58, 4 October 2022Thumbnail for version as of 20:58, 4 October 20223,120 × 3,120 (434 KB)DPLA bot (talk | contribs)Uploading DPLA ID 83184a7d1fc38599cfceda682431fdd1

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