1842

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• Jean-Adrien Philippe, the later partner at Patek Philippe, developes the crown winding, one of the major innovations in watchmaking history.

1839    <<    1840    >>    1841

 

• Physicist Auguste de la Rive of Geneva invents the galvanic gilding process.
• Jean-Baptiste Schwilgué of Strasbourg restores the clock of the city's cathedral which had been stopped since 1790.
• Antoine Redier, born in Perpignan, inventor of eight-point clocks, the coincidence counter, and various scientific recording devices, succeeds Duchemin, a watchmaker in Paris.