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marios_ch έγραψε:Fathers of time: Abraham Louis Breguet

A brief timeline for some of Brequet’s most famous inventions

1775-1780 Improved the automatic winding mechanism – his perpetual watch.
1783 Invented the gong for repeater watches (bells were used until then). Designed the apple-shaped ‘Breguet’ hands and ‘Breguet numerals’ which still grace watch dials today.
1787 Adopted and improved the lever escapement. Abraham-Louis Breguet used it in its definitive form from 1814 (this form is still in use).
1793 Developed a small watch showing the equation of time.
1790 Invented the ‘pare-chute’ anti-shock device.
1794 Invented a retrograde display mechanism.
1795 Invented the Breguet spiral (flat spiral balance spring with overcoil).
1795 Invented the ‘sympathetic’ in which a clock rewinds and sets to time a detachable watch.
1799 Invented the ‘tact’ watch that could be read by feel in the pocket or the dark.
1801 Patented the tourbillon escapement, developed circa 1795.
1802 Invented the echappement naturel, a double-escape wheeled chronometer escapement that needed no oil.
1810 Developed the world’s first wrist watch for Caroline Murat, Queen of Naples
1821 Developed the “inking” chronograph, in partnership with Frédérick Louis Fatton.

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