Noun
gas mantle (plural gas mantles)
The incandescent gauze (mantle) surrounding the flame in a gas lamp, which contains rare earths to enhance the light output.
As a result, owning and handling small amounts of thorium, such as a gas mantle, is considered safe. Source: Internet
A notable exception, discovered in the early 19th century, is the use of a gas mantle mounted above the wick on a kerosene lamp. Source: Internet
The invention of the incandescent gas mantle in the 1890s greatly improved light output and ensured its survival as late as the 1960s. Source: Internet