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Margaret "Mattie" Knight

Machinery Safety

  • Margaret "Mattie" Knight invented a device to shut down machinery in a mill when something malfunctions to avoid injury when she was just 12 years old.
  • She witnessed a worker injured at the factory where her brother worked and invented this device to prevent further injury.
  • She did not receive her first patent until she was 30 when she invented a machine to make flat bottoms for paper bags. This was Mattie's first invention of many to follow.
  • Mattie was a great girl inventor who became a great woman inventor. You could do it too!
  • Learn more about Mattie's adult inventions here.

     

 
 

 
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