Garrett Morgan (1877 – 1963) – Gas mask and traffic signal
Garret Morgan invented the first hair straightening cream, albeit by accident. However, his other two inventions, the traffic signal and gas mask, resulted from deliberate research and development. His gas mask, known as the Morgan helmet, was identified in the patent application as a breathing device and was adopted by firefighters to help them put out fires without inhaling poisonous air. Morgan was awarded the patent in 1912, and soldiers used the gas mask during World War I.
With the money earned from his inventions, Morgan could buy a car. While driving near an intersection in Cleveland, Ohio, he witnessed a terrible accident, which inspired him to invent a “yield” component as an addition to the existing traffic signal. The signal was intended to warn drivers about an upcoming stop. The yield component became one of the world’s first three-light systems, and Morgan was awarded the patent for it in 1924. Morgan’s other inventions include the round belt fastener, hat fastener, and friction drive clutch.