Introducing: The Eccentricity By Independent French Watchmaker Cyril Brivet-Naudot

The escapement in Brivet-Naudot's Eccentricity is an updated version of the libre excentrique (free eccentric) escapement by the 19th century Swiss watchmaker Louis Richard The original escapement is described and illustrated in Louis Moinet's comprehensive book Nouveau Traité Général d'Horlogerie It provides the balance with one direct impulse, similar to a detent escapement.

Unlike a detent escapement though, the libre excentrique escapement has two pallets for its locking and unlocking actions The locking and unlocking actions are controlled by an eccentric table rotating on the balance staff with a large hole on one side, resembling a crescent moon The opening of the hole allows a thin spring mounted on the pallet to enter and exit as the balance oscillates, causing the escape wheel to lock and unlock on the pallets Brivet-Naudot's updated version of the libre excentrique escapement adds pallet jewels, which decrease friction and increase longevity.

A second set of . Source