Hugo Gernsback’s Isolator
Long before modern ear plugs existed, a man by the name of Hugo Gernsback invented a device he called the Isolator. The Luxembourg national needed a way to block out all the noises and distractions around him, so he came up with this device in 1925. The helmet, which was soundproof, had two eye holes that the wearer could look into, but ones that blocked out items in the periphery. There was a nozzle near the mouth with a pipe that would attach to an oxygen tank for breathing. Luckily for people in the 1920s, the invention never went far.
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