verge precision

[nuno]

Hellomy friends,

I have serviced my pocket watch Verge, but now I tick very fast and avance 15 minutes per hour. I try put the hairspring more Wider for the swing to move slower, but But it's even worse the exhaust wheel spins non-stop. In French verge have two screws to put the speed correct. In this verge only see one pin (attach photo). Is possible put tick correct in this pin? Or problem is in hairspring?

Thanks

 

[gmorse]

Hi nuno,

How fast did it run before you serviced it?

Regards,

Graham

 

[Skutt50]

You might be looking in the wrong place. The regulation should be closer to where the hairspring is attached in the plate. Look under the balance, on the outer turn of the hairspring. The hairspring should pass through a pair of pins that can be moved. That is the regulation of the movement.

15 minutes an hour sounds like the hairspring is either too short or it is touching something that it shouldn't. Make sure it is mooving freely throughout its length (besides the regulator pins).

 

[gmorse]

Hi nuno,

When you say a pin, do you mean this one, (in the red circle)? This is the banking pin and the balance should never turn far enough for it to contact the banking pin(s) in the balance cock or the plate, so it has nothing to do with the balance amplitude.



The smaller the balance amplitude, the faster the watch will run. In English verges, the balance amplitude is partly controlled by how deeply the escape wheel, ('crown wheel'), is engaged with the flags on the verge staff. This adjustment is done by moving the part, (green arrow), called the 'follower', in or out. It's just a friction fit in the post, and you start by moving it in until the watch won't run, then gradually move it out until it will run, but there are possibly other problems in this area, most caused by worn pivot holes.

Regards,

Graham

 

[nuno]

Hello my friends,

the watch before serviced, dont work.
the swing has good amplitude, but only when the verge escape is not hitting the flag. So when I tune the piece (green arrow) or make the spiral longer or shorter, it is working, but as the amplitude is soon very small.

Is the part (green arrow) too tight and the exhaust too tight?

 

[Skutt50]

When you make the spiral shorter or longer do you adjust the beat error each time?

 

[nuno]

when i put spiral more longer or shorter i dont adjust beat error? where i can adjust him?

 

[gmorse]

Hi nuno,

when i put spiral more longer or shorter i dont adjust beat error? where i can adjust him?

Can you clarify please; when you say you're making the balance spring longer or shorter, are you just moving the regulator, (which doesn't alter the beat), or are you changing the point which is pinned in the stud, (which will alter the beat)?

Regards,

Graham

 

[nuno]

Yes I changing the point which is pinned in the stud. But the amplitude of balance if the staff don't touch in scape weel is good but if touch, they go very fasy

 

[gmorse]

Hi nuno,

Yes I changing the point which is pinned in the stud. But the amplitude of balance if the staff don't touch in scape weel is good but if touch, they go very fasy

OK, so the movement may well be out of beat; to correct this the balance spring collet where the spring is joined to the balance staff must be turned to bring it back into beat.

If the balance staff flags aren't engaging with the escape wheel teeth, the watch can't be running at all. To change the amount they're engaging, the follower ('green arrow' in post #4), is pushed in to increase it or pulled out to reduce it, just turning it won't alter this but it may alter the drops.

Regards,

Graham

 

[nuno]

i go dissembly again the movent and view if is correct

 

[nuno]

Hello my friends, the problem is the position of balance, now I think the watch is working good, I view in this forum this indication of palets of balance anther member from friend Graham. Now the beat is approximated of a Verge watch. One time Thanks my friends to help

 

[gmorse]

Hi nuno,

That's a very helpful picture, the escape arbor should be between the two flags as you show it, at least as a starting position. Then the escapement should at least run and you can fine tune it afterwards if you want to.

Regards,

Graham

 

[nuno]

Thanks my friend