Jump to content

Anyone want a real challenge.......

Tmuir

By Tmuir
in All Things Clocks

 Share

Recommended Posts

Tmuir Distinguished Member

Tmuir

Posted
Posted

National Time Recorder 'Portable' model.

http://www.ebay.co.uk/itm/Vintage-National-Time-Recorders-British-Made-Oak-Cased-Clocking-In-Clock-Spares-/132254441395?hash=item1ecafa9fb3:g:CF0AAOSwSzRZORiv

I dare someone to restore it. :D

The crazy thing is if it was local to me I would buy it as I want the hand crank which is sitting above the key, the keylock and key and the brass stamp wheels as I have one of these clocks but mine is missing some parts on the time recording side

  • Like 2
vinn3 Distinguished Member

vinn3

Posted
Posted

also known as a "punch clock".  similar to a  "race pigon timer"  ( pre electronic ).  quite collectable,  but so are many things.   good show.  vin.

Tmuir Distinguished Member

Tmuir

Posted
  • Author
Posted

Here is my one, waiting for the day I'm ready to work on platform escapements and tackle all the rest of the mechanism in the clock.

The last photo shows part of the scary modifications someone did a long time ago. When I purchased it, it had a 240V AC power cable passing through it with male and female Bakelite plugs attached.

The best I could work out was it was plugged into the mains and the extra screws that were put on the hour stamp wheel made contact with the brass tab above when it passed under it and let the 240VAC pass through it, the micro switch disconnected the mains when the lid was opened. This is why the hand crank is missing from mine as if anyone had touched it they would of been electrocuted so they removed it. It was a clever modification, but also an exceptionally dangerous one.

 

NTR1.jpg

NTR2.jpg

NTR3.jpg

NTR4.jpg

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

    • mbwatch
      Automatic vs Manual movement servicing

      By mbwatch · Posted

      If at all possible, find a service guide for the automatic movements your work on, because the lubrication procedures may have different requirements or rely on oils you would not use in a manual wind train (in addition to the braking grease you mentioned). Some autos like older Seikos do not have a manual wind option, so the procedure of letting down the mainspring without being able to use the crown may require a screwdriver in the ratchet wheel screw and great care. Do you have an auto movement you were planning to start with?
    • LittleWatchShop
      Breitling Navitimer 806

      By LittleWatchShop · Posted

      I am an amateur, so there's that. I do not get fixated on amplitude, lift angles, and beat error. However, 4.8ms would bug me if it were my watch. But you must judge your own skills to appreciate the possibility of going backward. I suggest, that you button it up let your friend enjoy the watch for now. As your skills progress, come back to it and correct it. I assume that this watch has a fixed hairspring pin. Some modern watches have an adjustable pin along with adjustable regulator. These are trivial to get in beat. I own a valjoux 726 my dad gave me on my 18th birthday (a looooong time ago). I broke the ratchet wheel with an aggressive wind 4 yrs ago. I have been waiting for my skills to progress before doing a service. I am close. Your advice is well placed and I will apply it.
    • tonydagee
      Unitas 6376

      By tonydagee · Posted

      I didn’t find any anomaly to the left of the red mark…reflection? this is the balance in its pivot in the inverted assembly. i can’t see any obvious kinks  and the spring is flat as far as I can see. Either the stud screw is missing, or it’s glued in… I don’t know. I’m loathe to fiddle with it. Any further insights? Thanks!
    • Bonefixer
      Breitling Navitimer 806

      By Bonefixer · Posted

      Update!  I've dismantled it, cleaned all the glue off, and rebuilt and lubricated the base movement. I'll leave the chrono part for another day. It's running well - great amplitude and keeping time, but it's got a beat error of 4.8ms.    How important is it to correct this? I'm worried that the potential for making things worse having to take the hairspring off and on repeatedly to adjust this. Would anyone here accept it at that?
    • Neverenoughwatches
      Discussing the forum in the event of no administration

      By Neverenoughwatches · Posted

      Since I've been banned from the previous discussion, apparently my language was inappropriate...for small boys. I will start another thread and act in a more decent manner for the girls and ladies of the group.  Please what will happen if the forum can't be managed by the administrator, are there provisions in place to preserve the achived member's questions and answers over the years. Please if I may ask these important questions that are important to the members please.
×
×
  • Create New...