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There were many inventions made during the 1920s. Some are listed below.
The vacuum cleaner was invented by Hubert Cecil Booth. He worked as a carpet duster and wanted to make an invention to help make the job easier because carpet dusters developed coughing fits and asthma.
The lie detector was invented in 1921 by John Augustus Larson, a medical student at the University of California at Berkeley.
The lie detector is originally called the polygraph machine. It was used as an interrogation tool with criminal suspects in a major crime.
Vacuums, along with other inventions, helped women get their house work done faster. It created more leisure time and is connected to women's sudden activeness in society.
A model of a 1920s lie detector
The 1920s inventions helped people live longer, helped America save money, and improved lives.
-Discovered in 1928
-Took scientist more than a decade to understand how to use it
-Discovered by Alexander Fleming- a Scottish biologist
-Alexander Fleming treated wounded soldiers in WW1
(Lie detector)
-Penicillin was used to treat wounds so they wouldn't get infected
-Less people suffered from their wound infection
This anti-biotic helped people live longer and bear or not feel the pain at all of an infection.
Earle Dickson's wife Josephine was accident prone. She would always cut herself with the kitchen knife. Earle one day got an idea to help her wife. He cut a piece of tape into a strip and stuck a little square piece of gauze in the middle of it and created the band-aid for his wife to put on her cuts. When Earle's company Johnson & Johnson heard his new invention could be put on quickly, they decided to make them.
<--- A traffic signal in the 1920's
Alexander Fleming working on the anti-biotic Penicillin
The Band-Aid was invented by Earle Dickson. He was a worker of the company Johnson & Johnson.
The traffic signal was invented in 1923 by Garrett A. Morgan.
The traffic signal was invented to reduce the amount of accidents and policeman used to control traffic after the invention of cars got the streets busier.