1830 - Keyless winding and hand setting system operated by the crown


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1830 - Keyless winding and hand setting system operated by the crown

 

1830 - Antoine-Louis Breguet built a pocket watch equipped with a special button which winding and hands setting of automatic movement. However, Breguet did not patent his invention.

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1838 - Louis Audemars of Brassus developed a keyless winding system.
 

 

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1844 - Jean Adrien Philippe won the bronze medal at the Exposition Nationale des Produits de l'Industrie in Paris for the keyless winding and time setting system invented in 1842.
 

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1847 - Antoine LeCoultre developed the keyless winding and time setting system. A separate button was used to activate one or the other function.
 

 

 
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1866 - Ferdinand Adolph Lange also invented and patented (May 15, 1866) his own keyless winding and time setting system.
 

 

Application: Władysław Meller

Other records: Timeline of Watchmaking Innovations

ETERNA - KALENDARIUM

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