Suspension Spring

[Nigelh]

Hi guys i bought at auction a slate French mantle clock 1865 but the suspension spring is missing any idea what length spring is needed, please ?

[clockboy]

A picture of the movement and possibly what the movement is will be needed to help with this. 

[oldhippy]

I would like to see the back plate  to be 100%. If your clock has this type fitted to the top of the back plate then the s/s you will need is something like this, as far as I remember there are three lengths.

[Nigelh]

Hi Hippy that's it any idea what length the strap is, please?

[oldhippy]

This site should help. I would try the one with number 130. Sometimes you have to file the top block to get a better clearance so the s/s hangs down straight and has movement, you don't want it rubbing anything, make sure it goes between the regulator block in the middle slit and not the side ones.   Here is a photo so you can see what I mean. The s/s should be held in place by a steel pin, but the s/s should be able to move on the pin, the pin should be tight in one side on the brass block the other side should just fit in but not to loose.

http://www.johnwardle.co.uk/clock-suspensions-58-c.asp

Edited March 30, 2017 by oldhippy

[clockboy]

 cousins sell them too. You need to measure the old one as they do vary in size & fitting. As oldhippy says sometimes filling is required 

[oldhippy]

10 minutes ago, clockboy said:

 cousins sell them too. You need to measure the old one as they do vary in size & fitting. As oldhippy says sometimes filling is required 

Clockboy he might not have the old one complete.