What He Invented: The Modern-Day Elevator Design.
Why It’s Important: Although Miles may not have invented the first elevator, his design was very important. Alexander Miles improved the method of the opening and closing of elevator doors, and he developed the closing of the elevator shaft when an elevator was not positioned at a floor. Miles created an automatic mechanism that closed access to the shaft.
His patent is still used for most elevators today because they still work under the basic principle of automated opening and closing doors. His life and his invention helped to break down racial barriers in many ways.
What He Invented: The Electroacoustic Transducer Electret Microphone.
Why It’s Important: Without James West, rappers wouldn’t be able to rock the mic. West, along with Gerhard M. Sessler, helped develop the electroacoustic transducer electret microphone, for which they received a patent in 1962. Their invention was acoustically accurate, lightweight and cost effective. Ninety percent of microphones in use today — including those in telephones, tape recorders and camcorders — are based on their original concept.