Suspension spring supplier

[mbhorology]

I've got a broken suspension spring which is 0.08mm thick x 10mm wide.   Problem is that I can't find a supplier for this thickness of suspension spring steel.  0.15mm x 6mm easy to get, but what about other sizes?  Any thoughts on where I can get some from before I consider butchering some cheap feeler gauges.

[oldhippy]

If you could post a photo of the movement I should be able to help you. 

[mbhorology]

The movement is from a Gledhill Brooke time recorder.  It is a very heavy duty fusee movement with maintaining work.  I have started to remove the rivets from the suspension spring in preparation for a new spring steel:

https://drive.google.com/file/d/1PxWHamrbkNqVzRzn3jGQUvOKT8ERgPr2Xg/view?usp=sharing

This is a picture of the movement out of interest, but the suspension spring is attached to the back of the case and not the movement.  Note the back cock.

https://drive.google.com/file/d/1-nVR7AElMVF6sKuqTx4sEJs-p2-zCssVRg/view?usp=sharing

 

[clockboy]

Cousins do a good selection of suspension springs it's best however to get their catalogue to browse the selection. Also most can be modified to fit.

[oldhippy]

That’s an odd fellow. Looks like you are going to have to make one. You can buy s/spring sheet and cut it to size. You need to buy slightly thicker and with some wet and dry emery rub it down to the thickness you need. If you google clock suspension spring sheet you will be able to find it. No Longcases or fusee s/springs have the width.   

Nice movement with maintaining power and looks like a deadbeat escapement.

[clockboy]

This is screenshot showing some of Cousins styles.

 

[mbhorology]

Thanks for the replies.  Looks like I'll be going down the route of reducing the thickness some spring sheet sheet to get the right size.  I already have some 0.15mm so its not going to take much effort to bring that down to 0.08 as needed.

Yes you are correct it is a deadbeat escapement.  Specifically it is a Brocot deadbeat escapement which I've not seen on an English made clock before.  They must have stolen the idea from a French clock!

https://drive.google.com/file/d/1jy65s5Km7TtQ-z60-p4-C5lrXYJhdredXw/view?usp=sharing

 

 

[nickelsilver]

A watchmaker friend of mine replaced the suspension spring in his Favag master clock with a blade from a safety razor. He's one of the best watchmakers I've ever met so I was surprised but it'd been ticking on that blade for years.

[JimmyD]

I am not sure why you would bother trying to reduce the 0.15 to 0.08 as I doubt you can get it 0.08 as an even thickness and this would lead to it hinging on the thinnest part or even a wobble on the pendulum. Why not try using the 0.15 as a test to see if it runs and adjust the pendulum to get the time right.

Also adjusting the length of the SS would give it more flexibility.?