{"id":22500,"date":"2021-02-22T14:14:23","date_gmt":"2021-02-22T19:14:23","guid":{"rendered":"https:\/\/www.filtersfast.com\/blog\/?p=22500"},"modified":"2021-02-22T14:14:23","modified_gmt":"2021-02-22T19:14:23","slug":"black-history-month-black-inventors-who-changed-the-filtration-industry","status":"publish","type":"post","link":"https:\/\/blog.filtersfast.com\/blog\/black-history-month-black-inventors-who-changed-the-filtration-industry\/","title":{"rendered":"Black History Month: Inventors Who Changed the Filtration Industry"},"content":{"rendered":"<p>February is <a href=\"https:\/\/africanamericanhistorymonth.gov\/about\/\">Black History Month,<\/a> and we would be remised if we did not share the stories of two innovative Black inventors, whose contributions changed the filtration industry forever.<\/p>\n<h2>\nDr. Rufus Stokes \u2013 Inventor of the \u201cClean Air Machine,\u201d an early concept of air purifiers.<\/h2>\n<p>Born and raised in Alabama, Dr. Rufus Stokes enlisted in the US Army right before graduating from high school. While in the army, Dr. Stokes attended a technical school where he was trained in auto mechanics. This training helped him find work in Missouri and Illinois after he was honorably discharged from the army. Dr. Stokes received the American Defense Service Medal, European-African-Middle Eastern Campaign Medal, and Good Conduct Medal.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20880 aligncenter\" src=\"https:\/\/www.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/Rufus_Stokes_WWII.jpg\" alt=\"dr rufus stokes inventor of the clean air machine\" width=\"243\" height=\"385\" srcset=\"https:\/\/blog.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/Rufus_Stokes_WWII.jpg 243w, https:\/\/blog.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/Rufus_Stokes_WWII-189x300.jpg 189w\" sizes=\"auto, (max-width: 243px) 100vw, 243px\" \/><\/p>\n<p>While working at Sanitarium and Brule Inc., he became interested in air pollution and decided that he wanted to figure out different ways to purify breathing air. Dr. Stokes invented the \u201cClean Air Machine:\u201d an air-purification device that reduced the gas and ash emissions of furnaces and power plant smokestack emissions in the 1960s.<\/p>\n<p>This technology was his unique utilization of what he described as \u201cthe three Ts\u201d:<\/p>\n<ul>\n<li>Temperature<\/li>\n<li>Time<\/li>\n<li>Turbulence<\/li>\n<\/ul>\n<p>Dr. Stokes created a small domestic version and a larger mobile version of this air purification device to show its versatility. During that time, most air pollution control technologies were more cumbersome and less efficient, but the \u201cClean Air Machine\u201d was not limited by design and configuration; its efficiency remained excellent regardless of industrial or residential applications.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20881 aligncenter\" src=\"https:\/\/www.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/400px-Rufus_Stokes_Patent.jpg\" alt=\"rufus stokes patent for clean air machine\" width=\"400\" height=\"302\" srcset=\"https:\/\/blog.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/400px-Rufus_Stokes_Patent.jpg 400w, https:\/\/blog.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/400px-Rufus_Stokes_Patent-300x227.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p>Dr. Stokes\u2019s \u201cClean Air Machine\u201d improved the respiratory health of so many people and significantly reduced health risks to plants and animals. An additional benefit of his clean air machine was that it reduced industrial stack emissions which ultimately improved appearance and durability of buildings, cars, and objects exposed to outdoor pollution for lengthy periods of time. Dr. Stokes laid the groundwork for many scientists to contribute to clean air and the reduction of pollution.<br \/>\nSadly, major companies denied smog emissions which caused disbelief in how efficient the \u201cClean Air Machine\u201d was. Many people were not willing to invest in Dr. Stokes\u2019 clean air machine, which prevented the widespread use of Dr. Stokes\u2019s inventions.<\/p>\n<p>However, his patent inspired many new inventions in air purification for both industrial and residential environments. In 1986, Dr. Stokes died of mesothelioma, an asbestos-related disease. Since his death, Dr. Stokes has been honored with inclusion in the United States Department of Energy\u2019s (DOE) list of \u201cEnergy Pioneers\u201d and acknowledged in the technology white paper \u201cQuantum Parallel.\u201d<\/p>\n<h2>\nAndrew F. Hilyer- Inventor of the Evaporators for Hot Air Registers which were the pre-cursor for humidifiers.<\/h2>\n<p>Andrew F. Hilyer was born a slave in Georgia in 1858. He left the South and eventually settled in Minneapolis, Minnesota.<br \/>\nWhile living as a free man in Minneapolis, he met and befriended wealthy families including the Pillsbury family of The Pillsbury Doughboy Company, who helped support his education. Hilyer became the first African American graduate from the University of Minnesota in 1882. He continued his education at Howard University\u2019s Law School where he earned an LL. B in 1884 and an LL.M in 1885.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20670 aligncenter\" src=\"https:\/\/www.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/andrew-hilyer.jpg\" alt=\"\" width=\"202\" height=\"250\" \/><br \/>\nHis career began at the Treasury Department where he eventually became Secretary-Treasurer. He organized community activities, served as the first president of the Union League of the District of Columbia, published black businesspeople directories, attended the Paris Exposition of 1900, and founded the Correspondence Club, a secret black lobbyist organization. He also found time to tinker in science and engineering.<\/p>\n<p>In 1900, Mr. Hilyer was awarded two patents in water evaporators and accessories for his inventions in air humidification.<\/p>\n<blockquote><p>\u201cThe object of my present invention is to readily supply the heated air of a room with a proper amount of moisture for health and comfort\u2026\u201d \u2013 Andrew F. Hilyer, Patent US438159A<\/p><\/blockquote>\n<p>Mr. Hilyer\u2019s invention was essentially a water tank and towel that attached to wall registers to moisten the hot, dry air pumping through the heating systems. His invention attached to the front of a wall register (vent) which would blow the warm air through a wet towel, thus, sending evaporated wet, hot air through a room and helped purify the air. The towel acted as a filter which captured and prevented dust\/dirt particles from passing through the vent into the home. Mr. Hilyer\u2019s inventions would be cited in numerous modern-day air humidifier inventions, as recent as the 1990s.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-20669 size-full\" src=\"https:\/\/www.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/andrew-hilyer-2.jpg.png\" alt=\"andrew f. hilyer patent illustration early humidifier\" width=\"1347\" height=\"1978\" srcset=\"https:\/\/blog.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/andrew-hilyer-2.jpg.png 1347w, https:\/\/blog.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/andrew-hilyer-2.jpg-204x300.png 204w, https:\/\/blog.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/andrew-hilyer-2.jpg-697x1024.png 697w, https:\/\/blog.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/andrew-hilyer-2.jpg-768x1128.png 768w, https:\/\/blog.filtersfast.com\/blog\/wp-content\/uploads\/2020\/02\/andrew-hilyer-2.jpg-1046x1536.png 1046w\" sizes=\"auto, (max-width: 1347px) 100vw, 1347px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>February is Black History Month, and we would be remised if we did not share the stories of two innovative Black inventors, whose contributions changed the filtration industry forever. Dr. Rufus Stokes \u2013 Inventor of the \u201cClean Air Machine,\u201d an early concept of air purifiers. Born and raised in Alabama, Dr. Rufus Stokes enlisted in [&hellip;]<\/p>\n","protected":false},"author":24,"featured_media":22501,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1929],"tags":[112,86082,9334,2095],"ppma_author":[86192],"class_list":["post-22500","post","type-post","status-publish","format-standard","has-post-thumbnail","category-water-education","tag-air-purifier","tag-air-purifier-and-humidifier","tag-black-history-month","tag-humidifier","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.3 (Yoast SEO v28.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Black History Month: Inventors Who Changed the Filtration Industry - The Filtered Files - Filters Fast - Your #1 Resource for Air and Water Filtration Related Information<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.filtersfast.com\/blog\/black-history-month-black-inventors-who-changed-the-filtration-industry\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Black History Month: Inventors Who Changed the Filtration Industry\" \/>\n<meta property=\"og:description\" content=\"February is Black History Month, and we would be remised if we did not share the stories of two innovative Black inventors, whose contributions changed the filtration industry forever. 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