Timeline of United States inventions (1890–1945)
Air conditioning is the cooling and de-humidification of indoor air for thermal comfort. Using a system of coils as a solution to cool and remove moisture from muggy air in a printing plant that was wrinkling magazine pages, Willis Carrier invented and manufactured the world's first mechanical air conditioning unit in 1902. Carrier's invention – encompassing the first system to provide man-made control over temperature, humidity, ventilation and air quality, was first installed as a solution to the quality problems experienced at a Brooklyn printing plant, Sackett-Wilhelms Lithographing and Publishing Company. Air conditioning not only spawned a company and an industry, but also brought about profound economic, social and cultural changes.
Arthur Frederick Ostrander
Arthur Frederick Ostrander, Sr. (February 14, 1895 – February 1978), was an assistant scientist. He worked with inventor George Poe. In his childhood he worked with Poe (mid-1907 to 1908), who taught him how an artificial respiration device functions. His assistance to Poe was instrumental in the successful development of the respiration device, as he performed the fine detail work and metal fabrication that Poe could no longer do. His face came to be one of the most well known of the time, having been featured in several large circulation newspapers."