#GarrettMorgan invented a #safetyhood#smokeprotectiondevice after seeing #firefighters struggling from the smoke they encountered in the line of duty. His device used a wet sponge to filter out #smoke and cool the air. It also took advantage of the way smoke and fumes tend to rise to higher positions while leaving a layer of more #breathable air below, by using an air intake tube that dangled near the floor. He filed for a #patent on the device in 1912, and founded a company called the #NationalSafetyDeviceCompany in 1914 to market it. Morgan had witnessed a serious accident at an intersection, and he filed a patent for traffic control device in 1922.
In 1923, the U.S. #PatentOffice granted Patent No. 1,475,074 to Garrett Morgan for his three-position #trafficsignal. Though Morgan's was not the first traffic signal (that one had been installed in #London in 1868), it was an important innovation nonetheless: By having a third position besides just "Stop" and "Go," it regulated crossing vehicles more safely than earlier signals had. #history#blackpeople#inventions