Onésiphore Pecqueur

Onésiphore Pecqueur (1792–1852) was a French mechanical engineer who patented the modern-day differential gear, found on the axles that connect to the powertrain of all automobiles.

Early life

He was born in the Pas-de-Calais.

Career

He worked as a watchmaker. In 1823 he won the National Exhibition Gold Medal for inventing a watch that showed sidereal and mean time.

He invented the differential in 1827 (known in French as the différentiel mécanique). He invented it whilst at the Conservatoire des Arts et Métiers. It was derived from his work as a watchmaker, whereby cogs move at different rates. The differential allowed the adjustment of rotational ratios of two wheels turning on the same axle.

Personal life

He died in Paris in 1852.

gollark: ++delete death
gollark: ææææææ
gollark: V O I D linux.
gollark: The V O I D.
gollark: I am writing about the importance of people having access to strong/E2E encryption.

References
    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.