Yttrium oxide mantles for fuel-burning lanterns

Combustion – Incandescent mantle

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126 97, 427159, 252492, F21H 300, F21H 102

Patent

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045333173

ABSTRACT:
Incandescent mantles of improved strength and durability are provided for use with fuel-burning lanterns. The mantles are characterized by the use of a hydroxide mixture on the mantle sack of which the primary component is yttrium hydroxide together with a critical proportion of cerium hydroxide, whereby on conversion of the hydroxides to the corresponding oxides of the incandescent mantle, illumination is provided of a candle power comparable to that of the standard thorium oxide-cerium oxide mantles while at the same time obtaining a mantle of greatly increased strength and durability, as needed especially for use with fuel-burning lanterns where the mantles are subjected to frequent mechanical shocks.

REFERENCES:
patent: 269204 (1889-08-01), Welsbach
patent: 359524 (1897-03-01), Welsbach
patent: 399174 (1889-03-01), Welsbach
patent: 463470 (1891-11-01), Welsbach
patent: 563524 (1896-07-01), Welsbach
patent: 574862 (1897-01-01), Deth
patent: 703064 (1902-06-01), Hicks
patent: 928580 (1909-07-01), Buhlmann
patent: 1436296 (1922-11-01), Soper et al.
patent: 2546115 (1951-03-01), Ulmer
"The Rare Earth Industry," Chapt. I, pp. 15-28, Martin, Editor (Crosby, Lockwood & Son, London, 1918).

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