Historical Events in July 1872

  • Jul 9 Doughnut cutter patents granted to John Blondel, Thomaston, Maine
  • Jul 18 The Ballot Act introduces the secret ballot in elections in Britain; previously votes made openly

InventionHistoric Invention

Jul 23 African American inventor Elijah McCoy is granted a patent for lubricators for steam-engines

Inventor Elijah McCoy
Inventor
Elijah McCoy
  • Jul 30 Mahlon Loomis patents wireless telegraphy