Vacheron and Constantin Mainspring
Posted:
Mon Jun 18, 2018 7:20 pmby jcrawford52
I am cleaning a Vacheron and Constantin pocket watch (circa 1910) and don't understand the function of the cog and stop on the top of the mainspring (see photo). I have the mainspring apart, but am not sure how to set the tension when I reassemble it. When I rotate the barrel with the cog removed it puts tension on the spring, but I don't know how tight to make it. Any help appreciated.
Re: Vacheron and Constantin Mainspring
Posted:
Mon Jun 18, 2018 7:53 pmby Bob Tascione
Hi JCraford52,
Here's an animation I did awhile back that might be helpful.
https://learntimeonline.com/blog/geneva-stop-work/Hope it helps,
Bob
Re: Vacheron and Constantin Mainspring
Posted:
Tue Jun 19, 2018 6:56 amby jcrawford52
Bob,
What a great explanation and what a clever mechanism. I never would have figured this out for myself, but you made it very clear. Thank you very much.
Re: Vacheron and Constantin Mainspring
Posted:
Sat Jun 23, 2018 8:58 amby Bob Tascione
You're very welcome JCrawford!
Glad it helped out.
Take care for now,
Bob