TZ Blogs June 26, 2014 Timezone Feature
On 26 June 1801 (7 Messidor, Year 9), Abraham-Louis Breguet registered his patent for the tourbillon regulator. Although he was a prolific inventor, A-L Breguet only ever registered two patents. He registered his first patent for the constant force escapement only a few years earlier on 9 March 1798. Both original patents are preserved at the Institut National de la Propriété Industrielle in Paris. This is the water-colour illustration for the tourbillon patent:
Water-colour illustration for the tourbillon patent filed on 26 June 1801
Institut National de la Propriété Industrielle, Paris
During his lifetime, A-L Breguet made only 35 examples of the Tourbillon between 1805 and 1823. This simple tourbillon chronometer (garde-temps) with engine-turned hunter case was sold on 21 March 1812 for 1,800 francs:
Regulateur A Tourbillon, No. 2567 (1812)
Collection Montres Breguet S.A.