Jump to content

Black slate clock.


antonyh

Recommended Posts

I know it's not slate or marble,  but every will know the sort of clock I'm referring to , anyway. 

I brought one at a car boot sale, just can't  resist  a broken clock with bits missing, the fact is you always  learn something along the way.

So it's was missing a hand , not a problem,  pendulum,  not too much of a problem with  the fact is you can just pick up a catalogue now days.

And the fine regulator for the pendulum, , well I now now the diffence between the brocot and the vattet suspension system. 

So after much searching through my boxes of stuff , I found one and with a little work ,, it's now as it should.

I will get round to posting a picture of the case, but as with a lot of these clocks the cases get damaged easily. .

In the meantime I'm  sure there's a few of you  that will share your pictures. 

2018-11-21_11.09.02.jpg

20181121_091637.jpg

20181121_092806.jpg

Link to comment
Share on other sites

If the case is heavy, it will be slate. I say this because some cases are painted black and they can be wood. The movement is French, most have numbers on the back plate and sometimes one of the numbers will give you the length for the pendulum. This site will help you with the pendulum.

http://www.m-p.co.uk/formulae/frpend.htm

Link to comment
Share on other sites

  • 1 month later...

Just a quick add on for those who are interested in the black slate clocks.

I kept looking at my clock top and back of the clock case, all white in places,  the top was awful where people had put things on, cleaned it with various cleaners,  so it was pretty bad.

So I thought I'd try some of tha Curator, not used it before,  OMG what a transformation. 

So easy to use as it's water based, use gloves when your using it.

download.jpeg

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • I'm assuming that every time you set the watch you are work hardening the detent spring, maximum hardening is  where it meets the plate due to maximum deflection.   That's why it snaps there.  The Young's modulus may be the same but after it's reached its maximum yeid strength it breaks.  My mechanic engineering is very rusty, correct me if I'm wrong. 
    • Ah ok yes that makes sense to polish it where the arm starts to form from the body of the bridge, i thought you meant the underneath of all the arm.
    • this is something I've never quite understood about the some of the Swiss companies. In 1957 Omega was using 9010 for the keyless parts with epilam. there's been a slow migration towards using heavier lubrication's but still typically oils and epilam to keep them in place. When it seems like 9504 works so much better.  
    • OK, welcome in the world of alarm clocks... I guess the 4th wheel is dished because it is from another movement. If it was not dishet, then it would not mesh with the pinion of the escape wheel, am I right? The marks of wear on the 4th wheel pinion doesn't corespond to the 3th wheel table position, at list this is what i see on the picts. Calculating the rate is easy - there is a formula - BR = T2 x T3 x T4 x T5 x 2 /(P3 x P4 x P5) where T2 - T5 are the counts of the teeth of the wheels tables, and P3 - P5 are the counts of the pinion leaves. Vibrating the balance is easy - grasp for the hairspring where it should stay in the regulator with tweasers, let the balance hang on the hairspring while the downside staff tip rests on glass surface. Then make the balance oscillate and use timer to measure the time for let say 50 oscillations, or count the oscillations for let say 30 seconds. You must do the free oscillations test to check the balance staff tips and the cone cup bearings for wear. This kind of staffs wear and need resharpening to restore the normal function of the balance.
    • Glue a nut to the barrel lid, insert a bolt, pull, disolve the glue.  Maybe someone will have a better answer. 
×
×
  • Create New...