He replaced the crown-wheel mechanism with a cylinder escapement.

In 1902 the company started producing the first pocket watch movement with a cylinder escapement developed entirely in-house.

1840 : Until 1840 the house manufactured watches with escapement wheels then introduced the cylinder escapement Lépine calibre to the Jura Mountains.

By replacing the crown-wheel mechanism with a cylinder escapement, Frédéric-Louis introduced a major innovation into the watchmaking world.

Ferdinand Berthoud, gold pocket-watch with “à toc” quarter repeater, centre seconds and cylinder escapement, movement no. 957, case no. 235, circa 1780.