Editing Gas mask (section)

===Early breathing devices===
According to ''[[Popular Mechanics]]'', "The common sponge was used in [[ancient Greece]] as a gas mask..."<ref>"''[https://books.google.com/books?id=0uMDAAAAMBAJ&pg=PA163-IA2 Popular Mechanics]''". January 1984. p. 163</ref> In 1785, [[Jean-François Pilâtre de Rozier]] invented a [[respirator]].

Primitive respirator examples were used by [[miner]]s and introduced by [[Alexander von Humboldt]] in 1799, when he worked as a mining engineer in [[Prussia]].<ref>{{Cite book | first=Alexander | last=Von Humboldt | year=1799 | title=Ueber die unterirdischen Gasarten und die Mittel, ihren Nachtheil zu vermindern: Ein Beytrag zur Physik der praktischen Bergbaukunde | publisher=Braunschweig, Friedrich Vieweg | url=https://books.google.com/books?id=LW1oAAAAcAAJ}}</ref> The forerunner to the modern gas mask was invented in 1847 by [[Lewis P. Haslett]], a device that contained elements that allowed breathing through a nose and mouthpiece, inhalation of air through a bulb-shaped filter, and a vent to exhale air back into the atmosphere.<ref>{{cite web|title=The invention of the gas mask|publisher=Ian Taggart|url=http://www33.brinkster.com/iiiii/gasmask/page.html|url-status=dead|archive-url=https://web.archive.org/web/20130502145330/http://www33.brinkster.com/iiiii/gasmask/page.html|archive-date=May 2, 2013}}</ref> ''First Facts'' states that a "gas mask resembling the modern type" was patented by Lewis Phectic Haslett of [[Louisville, Kentucky]], who received a patent on June 12, 1849.<ref name="disu">{{cite book |editor1-last=Su|editor1-first=Di |title=Evolution in Reference and Information Services: The Impact of the Internet |last1=Drobnicki|first1=John A.|last2=Asaro|first2=Richard|chapter=Historical Fabrications on the Internet |publisher=Haworth Information Press|location=Binghamton, New York |year=2001 |page= 144|isbn= 978-0-7890-1723-9 |chapter-url=https://books.google.com/books?id=IvqbuSm4sHYC&q=gas+mask+patent+1849&pg=PA144}}</ref> U.S. patent #6,529<ref>{{Cite patent|title=Lung Protector|inventor-first=Lewis P.|inventor-last=Haslett|gdate=1849-06-12|country=US|number=6529A|inventorlink=Lewis_Haslett}}</ref> issued to Haslett, described the first "Inhaler or Lung Protector" that filtered dust from the air.

Early versions were constructed by the Scottish chemist John Stenhouse in 1854<ref name="Benson2010">{{cite book|author=Alvin K. Benson|title=Inventors and inventions|url=https://books.google.com/books?id=JqVZAAAAYAAJ|year=2010|publisher=Salem Press|isbn=978-1-58765-526-5}}</ref> and the physicist John Tyndall in the 1870s.<ref>{{cite book|title=The Environment and Its Effect Upon Man: Symposium Held at Harvard School of Public Health, August 24-August 29, 1936, as Part of Harvard University Tercentenary Celebration, 1636-1936|url=https://books.google.com/books?id=WYsaAAAAMAAJ|year=1937|publisher=Harvard School of Public Health}}</ref> Another early design was the "Safety Hood and Smoke Protector" invented by [[Garrett Morgan]] in 1912, and patented in 1914. It was a simple device consisting of a cotton hood with two hoses which hung down to the floor, allowing the wearer to breathe the safer air found there. In addition, moist sponges were inserted at the end of the hoses in order to better filter the air.<ref>{{Cite book |last1=Gates |first1=Henry Louis Jr. |url=https://books.google.com/books?id=3dXw6gR2GgkC |title=African American Lives |last2=Higginbotham |first2=Evelyn Brooks |date=April 29, 2004 |publisher=Oxford University Press |isbn=9780199882861 |language=en |quote=}}</ref><ref name="pbs.org/wgbh/theymadeamerica2">{{cite web|url=https://www.pbs.org/wgbh/theymadeamerica/whomade/morgan_hi.html|title=Garrett Augustus Morgan|quote=He sold the hoods to the U.S. Navy, and the Army used them in World War I.|work=PBS Who Made America?}}</ref>