The winding stem is a rod that connects the crown of a mechanical watch to the mechanism, called “movement”, in order to act on the latter.
Its primary function is to allow the winding of the watch. Without it, the reassembly and the setting on time were done by key. Often threaded in modern watches, it was frequently section driven into the crown for older watches. It is part of the draft . It is also used for certain models to set the time or date. On old watches, the rod only allowed a rotary movement, the time was set by simultaneously pressing a button protected by a tab and often located on the case facing the dial at 2 o’clock or 10 o’clock h .
The seal located at this level is one of the essential elements in the case of waterproof watches. Also note the existence of so-called “broken” rods which consist of two interlocking sections, particularly used in monobloc housings, as well as extension rod to overcome a rod too short.
It owes its invention to the watchmaker Joseph Marie Danesi at the beginning of the xix th century that will transfer the rights to a Parisian engineer 1 .
Notes and references
- ↑ ” Danesi: history of the house Danesi, jeweler and jeweler in Bastia since 1815 ” [ archive ] , on www.danesi.fr (consulted on December 15, 2016 )