On This Day

Gas mask patented by Lewis Haslett (Louisville, Kentucky)

A gas mask is a piece of personal protective equipment used to protect the wearer from inhaling airborne pollutants and toxic gases.

A gas mask is a piece of personal protective equipment used to protect the wearer from inhaling airborne pollutants and toxic gases. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face. Most gas masks are also respirators, though the word gas mask is often used to refer to military equipment (such as a field protective mask), the scope used in this article. Gas masks only protect the user from ingesting or inhaling chemical agents, as well as preventing contact with the user's eyes (many chemical agents affect through eye contact). Most combined gas mask filters will last around 8 hours in a biological or chemical situation.

Historical Significance

A gas mask is a piece of personal protective equipment used to protect the wearer from inhaling airborne pollutants and toxic gases.

Events Before

  1. British forces forcibly seize the port of San Juan del Norte (later Greytown) from Nicaragua

    British forces forcibly seize the port of San Juan del Norte (later Greytown) from Nicaragua

  2. James Marshall finds gold in Sutter's Mill in Coloma, California [1]

    The California gold rush (1848–1855) was a gold rush in California, which began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California.

  3. Treaty of Guadalupe Hidalgo ends the Mexican–American War. Mexico loses 55 percent of its territory to the US, including

    Treaty of Guadalupe Hidalgo ends the Mexican–American War. Mexico loses 55 percent of its territory to the US, including California, Nevada and Utah in exchange for $15 million.

  4. Karl Marx and Friedrich Engels publish "The Communist Manifesto" in London

    The Communist Manifesto (German: Das Kommunistische Manifest), originally the Manifesto of the Communist Party (Manifest der Kommunistischen Partei), is a political pamphlet written by Karl Marx and…

  5. Confederate General James Longstreet (27) weds Maria Louisa Garland in Lynchburg, Virginia

    Confederate General James Longstreet (27) weds Maria Louisa Garland in Lynchburg, Virginia

Events After

  1. Senator Henry Clay drafts the Compromise of 1850 to defuse tensions between slave states and free states over territorie

    Senator Henry Clay drafts the Compromise of 1850 to defuse tensions between slave states and free states over territories won during the Mexican–American War

  2. French writer and playwright Honoré de Balzac marries Ewelina Hańska in Berdyczów, Ukraine

    French writer and playwright Honoré de Balzac marries Ewelina Hańska in Berdyczów, Ukraine

  3. American Union Army General William Tecumseh Sherman (30) weds Eleanor Boyle Ewing in Washington, D.C., until her death

    American Union Army General William Tecumseh Sherman (30) weds Eleanor Boyle Ewing in Washington, D.C., until her death in 1888

  4. Poet Alfred Tennyson (40) weds Emily Sellwood (36)

    Poet Alfred Tennyson (40) weds Emily Sellwood (36)

  5. First public demonstration of ice made via refrigeration by Florida physician John Gorrie

    First public demonstration of ice made via refrigeration by Florida physician John Gorrie

More from the 1840s

Frequently Asked Questions

What happened on June 12, 1849?
A gas mask is a piece of personal protective equipment used to protect the wearer from inhaling airborne pollutants and toxic gases. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face. Most gas masks are also respirators, though the word gas mask is often used to refer to military equipment (such as a field protective mask), the scope used in this article.
Why is Gas mask patented by Lewis Haslett (Louisville, Kentucky) significant?
A gas mask is a piece of personal protective equipment used to protect the wearer from inhaling airborne pollutants and toxic gases.

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