Winding blocked on vintage mechanical watch

R richfrommich

I have a vintage Omega mechanical watch, looks identical to a cal. 601 being advertised. When I try to wind it, sometimes it works, but sometimes immediately or after a short while it feels like winding is blocked. This seems to have nothing to do with how wound it is... sometimes winding is blocked even if watch is completely unwound. Then maybe some time later I can wind it again. Is there a mechanism to prevent overwinding? Could it be faulty? Can it be removed? When I have (repeatedly) brought it to a watchmaker, they are able to wind it and tell me that nothing is wrong, that there is nothing there to stop overwinding. (Maybe intermittent problem? Maybe they are removing the cover and that changes things?)

ecarpino

As said above, it can be many things: a partially broken winding pinion, lots of dirt between the crown wheel and the winding pinion, a broken ratchet wheel, etc.

You need to get the watch checked by a watchmaker or at least post some pictures of the movement here, but without having the watch in hand it will be difficult to do a proper diagnosis

R richfrommich

I have a vintage Omega mechanical watch, looks identical to a cal. 601 being advertised. When I try to wind it, sometimes it works, but sometimes immediately or after a short while it feels like winding is blocked. This seems to have nothing to do with how wound it is... sometimes winding is blocked even if watch is completely unwound. Then maybe some time later I can wind it again. Is there a mechanism to prevent overwinding? Could it be faulty? Can it be removed? When I have (repeatedly) brought it to a watchmaker, they are able to wind it and tell me that nothing is wrong, that there is nothing there to stop overwinding. (Maybe intermittent problem? Maybe they are removing the cover and that changes things?