Englishmen, Henry Talbot invents calotype photography.
· Solymon Merrick patents the wrench.
· Englishmen, Francis Pettit Smith invents the propeller.
· Charles Babbage invents a mechanical calculator.
· American, Cyrus McCormick invents the first commercially successful reaper.
Samuel Fahnestock patents a soda fountain.
German, Frederick Koenig invents an improved printing press.
· Peter Durand invents the tin can.