Need a balance staff for pocket watch

[Daniel123]

Hi, can anyone suggest a good place to get a balance staff made, I don’t have the tools or skill so was looking for someone to turn one for me. I’m UK based.Thanks

[Nucejoe]

What make or caliber? 

[Daniel123]

It’s a Swiss pocket watch by Duch & Perret St. Imier

Size 19 Ligne or 18s

[Nucejoe]

I was thinking you may know all dimensions. 

 

 

 

[Daniel123]

Hi, sorry I think it’s roughly

A= 580

B= 300

J= 140

G= 69

K= 90

 

[Nucejoe]

32 minutes ago, Daniel123 said:

Hi, sorry I think it’s roughly

A= 580

B= 300

J= 140

G= 69

K= 90

 

Called an assortment or a mess, I,ll dig in my bag of 2000 staffs, I just may find some to suit your balance wheel.

If not an exact match, you can get by with broaching for J and G while  K isn't as significant.

Making a staff is a last resort and expensive and whoever makes one should fit it onto the wheel and poise it as well.

I,ll start digging, be happy to gift wrap and send you some, fingers  crossed.

 

 

[Daniel123]

Oh my word that’s so kind... I’ll be happy to reimburse you if you find anything

[Daniel123]

It looks like this

[Nucejoe]

1 hour ago, Daniel123 said:

It looks like this

Great, distinctive looks, not as hard to find as I thought.

 

 

[Nucejoe]

On 6/6/2020 at 5:24 PM, Daniel123 said:

It looks like this

@Daniel123     Dose a roller table go on the broken pivot side OR is this some odd looking cylinder escapement?    Will you show the impulse jewel.

[Daniel123]

Yes on the broken pivot side. I’ll get a picture of the impulse jewel for you

[Daniel123]

Here is a picture of the impulse jewel as best as my camera will take, it’s clear in colour and look oval rather than round 

[jdm]

9 hours ago, Daniel123 said:

it’s clear in colour and look oval rather than round 

And so it as to be, in older times the ellipse (that's its other name too) shape was thought to be more efficient due to its larger contact and sliding area to the fork. 

[Nucejoe]

Dose this seem right to you or about right.

The good news is I found out there are more than two thousand staff in these containers.

Bad new is, I seem to have lost my vernier.

Edited June 9, 2020 by Nucejoe
no pic ha

[Daniel123]

Wow that certainly looks like the right one

[Nucejoe]

Will continue sifting through these, I may find more or sexier lookin ones.

[JohnR725]

I don't suppose you have a picture of the dial side showing the setting parts?

Then the website below you can enter in dimensions see if anything matches or if anything's really close because then you can just modify it. Like very first one on the list Buren (BAA) Looked relatively close. Another place to look is the bestfit book Which also has a listing of balance staffs by size.

 

https://www.balancestaffs.com/product.php?dim_A=580

[Daniel123]

Hi, here are some photos, I’m missing the dial unfortunately. I believe my great grandfather was in an accident in a mine and the watch got very damaged. I’m the first person to try and fix it in a hundred years

[Nucejoe]

Question ;

How do you search for a stem on www.balancestaffs.com by dimention?

You can enter A and B then it says all, In what order should I enter other threes, J , G and K.

 

[Daniel123]

I’ve not used balancestaffs for stems yet so not sure sorry :/

[Nucejoe]

1 hour ago, Daniel123 said:

I’ve not used balancestaffs for stems yet so not sure sorry :/

Oh, I meant staff. Also the lingne has to match. 

 

[Nucejoe]

2 hours ago, Nucejoe said:

Question ;

How do you search for a stem on www.balancestaffs.com by dimention?

You can enter A and B then it says all, In what order should I enter other threes, J , G and K.

 

Correction, I meant staff.  The search function seem to provide searching by dimentions, but how.

[Daniel123]

Yeah it’s a bit frustrating you can only search by A & B then you hit return. The list should show up below then it’s a case of clicking on each of them to find the best match. 

[Nucejoe]

Hi daniel.

Update,  I am measuring with a vernier, haven't found my old micrometer yet.

Closest size I have come up with so far,  shows   J=135   others dimensions seem to match.  

The question form machinest members is,  any chance of making J=135 fit 140, dose 5/100 mm diference matter that much? 

Will continue digging for a better candidate.

Regards

[Daniel123]

It’s a good question is the 0.5 going to make a difference I suppose the only way to properly test is to try and fit one and see. There does seem to be more available at 135mm