Jump to content

Jax 1930s clock

gary17

By gary17
in All Things Clocks

 Share

Recommended Posts

gary17 Super WRT Addict

gary17

Posted
Posted

hey guys never messed around with a clock before, Wandering were i can get some general info on them. The clock i am  starting from is a french 1930s mantle clock it has Jax on the dial , Cannot see maker mark on movement. Thought this would be easy after doing watches, but i am wrong. Got the movement out and i just do not no which screws or parts i need to remove first.

Any youtube or anything that may help apppreciated,

cheers

gary

Link to comment
Share on other sites
watchweasol Distinguished Member

watchweasol

Posted
Posted

Hi Gary,  first remember to let down the power of the mainsprings before attempting to do anything,  Normally I would remove the barrel bridge and the barrels ,  then the balance assy ,  It looks like it may be a cylinder balance so be very careful when doing so. Then the train bridge and wheels. Turn over and take plenty of picture# of the front and the levers, and Homer before removing anything.  This clock looks to have fixed arbours the way they are riveted at the front, it may/maynot have open springs one can’t tell from the pictures, post some more pictures when the plates are removed for further help.

 

Link to comment
Share on other sites
watchweasol Distinguished Member

watchweasol

Posted
Posted

Hi Richard , basically the age of it and the style of the balance rim, it may well be a pin pallet but it it’s indestinct in the picture , I mentioned it because if it is it would be irreplaceable as a balance and persons capable of repairing them are at a premium not only that costly so extra care required .

  • Like 1
Link to comment
Share on other sites
oldhippy Distinguished Member

oldhippy

Posted
Posted

Sorry for the late reply it was some problem with the forum yesterday according to Mark. You should first remove the balance and put it out of the way. You can let the alarm spring down just by setting the alarm. The mainspring can be let down by the means of putting the key back on the arbor, hold the key firmly in you hand as if you are going to wind it and and with your other hand and and a piece of thick peg wood or a screwdriver move the click away from the ratchet and let the key slip in your hand  until all power is off. Take plenty of photos this will help you. Remove the alarm plate and all its workings, look for signs of wear. Them remove the main plate and do the same, you are looking for damage to wheels pay attention to pivots they must all be smooth, look for wear in holes, put each wheel in its place and see if the pivots move about from side to side, if they do you will need to re-bush them. The springs need to be removed from there barrels and do not muddle them up keep them away from each other. If the springs look out of shape they should be replaced. If you have a watch cleaning machine you can clean the movement in that, if not then hand cleaning is all you can do. 

Link to comment
Share on other sites
watchweasol Distinguished Member

watchweasol

Posted
Posted

Hi Gary.  The spring , you can get an assortment from Cousins and sort one from there, what’s wrong with the old one  is tr beyond repair.  Remember Any  new spring will need timing to your balance otherwise it’s guess work even to get close.  Good luck.

Link to comment
Share on other sites
oldhippy Distinguished Member

oldhippy

Posted
Posted

You don't need to take those parts off. The hairspring looks worse then it is. Have you done any hairspring work? First you need to unravel it, Use a pin or a fine oilier, start near the collet and work out. Then take a photo so I can see it. 

  • Like 1
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.

×
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • nevenbekriev
      TIMEKEEPING PROBLEM: Impact of changing the platform escape wheel on a carriage clock

      By nevenbekriev · Posted

      Ok, with the parts You have, the easiest thing to do is vibrate a new hairspring, of cousre for 16800 BPH. A couple of balance screws will be not enough, at least 3-4 aditional couples will be needed. And this if You have that many free holes. And cutting 75 teeth table for the contrate wheel is the other reasonable option Different things may have happened to the clock - the contrate wheel may have be replaced from another modification, the platform may not be original, the hairspring may have been replaced and vibrated for 18000 or the entire balance may have been replaced wit the wrong one...
    • Knebo
      Hairsrping alignment

      By Knebo · Posted

      I also agree with @mikepilk and @Waggy. Your readings look good. The amplitude drop between the horizontal postion and the vertical position is nice and low (only 18° difference).  The delta of 17 sec (-3 to +14) between those positions is absolutely ok. If you really wanted to improve on this, I think you'd have to look into the poising of the balance wheel (not the spring, which looks perfect). But that's a total overkill for this kind of movement. Leave it be.
    • mikepilk
      AS 1475 REFURBISH (Recalled to life)

      By mikepilk · Posted

      I've just finished refurbishing a Memostar Alarm with AS 1931 movement (same as 1945 but with date and running at 21600). I was also surprised how many parts are available at Cousins. Like you, I was missing the alarm stem (Cousins stock them) and I needed new crowns. It's a nice simple movement for an alarm, easier to service than a Seiko Bell-Matic. BTW I made a note in my Servicing spreadsheet: "Pull out winding stem before removal".  It may have just been wear on my movement, but I found that the yoke could move out of the clutch if the stem was removed in the normal position (like some ETAs).  You might find this interesting     
    • LittleWatchShop
      AS 1475 REFURBISH (Recalled to life)

      By LittleWatchShop · Posted

      I picked up this alarm watch at a flea market several months ago and recently decided to investigate.  I am not finished, but well on my way. As you can see, there was significant water damage.  Running these parts through my L&R cleaner was not enough to clean them, so I did manual cleaning with one-dip and cotton swab (the dense pointed kind).  The wig-wag was stubborn--the two gears would not release from the plate.  I soaked it in Kroil overnight and that did the trick. There was some rust on the balance staff, but not actually on the pivots themselves.  Nevertheless, I chucked it a step-chuck on my lathe and burnished the pivots. The watch is running and I have confirmed that the alarm drive train is functioning.  Since I am missing a stem for the alarm, I have not done the final assemble of the alarm components.  Surprisingly, there are lots of parts available for this movement on Cousins.  I will probably get a couple of stems and maybe some other parts that I deem necessary. The watch is running at weak amplitude (about 190) and shows some poising issues.  I will work on that. The last two pictures are after partial reassembly.    
    • watchweasol
      Greetings from India.

      By watchweasol · Posted

      Hello and welcome to the forum.    Enjoy
×
×
  • Create New...