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Dictionary
Samuel Johnson publishes the first English language dictionary on April 15th after nine years of writing -
The Chomatic Lens
John Dollard invents the chromatic lens -
Marine Chronometer
John Harrison invents the navigational clock or marine chronometer for measuring longitude -
The Spinning Jenny
Hames Hargreaves invents the Spinning Jenny -
Electric Telegraph
Georges Louis Le Sage patents the electric telegraph -
Flush Toilet
Alexander Cummings invents the flush toilet -
Spinning Mule
Samuel Compton invents the spinning mule, used to spin cotton -
Bi-focals
Benjamin Franklin invents the bi-focal eyeglasses -
Steamboat
John Fitch invents the first steamboat, initially propelled by Indian canoe paddles -
Off with their heads!!
The guillotine was invented -
First Patent
The United States issues its first patent to William Pollard, Philadelphia for a machine that roves and spins cotton -
Cotton Gin
Eli Whitney patents the cotton gin -
Small Pox
Edward Jenner creates a smallpox vaccination
