January 22

January 22

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Events

On January 22, 1675 Huygens commissioned Isaac Thuret to complete the first model (prototype) of a pocket watch using a balance-spring (hairspring) and balance (foliot) after their design.

• Isaac Thuret wird am 22nd January, 1675 von Huygens mit der Anfertigung eines ersten Modells einer Taschenuhr mit Spiralfeder und Unruh nach dessen Entwürfen beauftragt.

Births

• Feodor William Rüffert was born on 22nd January, 1835 in Borna by Leipzig.
• John Henri LeCoultre was born on 22nd January, 1872 in Le Sentier.

Deaths

• Samuel Franz died on 22nd January, 1896 in Engelfangen (Saarbrücken).