Daewoo - Help with letting down mainsprings

[rlynch106]

I bought this Korean Regulator clock a few months ago. I want to check it out and see if it needs any repairs and I want to clean and oil it. I do not understand how you are supposed to let down the mainsprings. It has the click inside the plates and it has the gear in the picture on the front side of the front plate.

I do not see how I can let down the mainsprings once it hits the broad divit in the gear. I can get it that far but do not see how it can go past the divit.

Thanks for any help,
Bob

 

[rlynch106]

Well, after walking away and coming back to it a while later, I was able to get them to move further. I guess they got stuck due to crud, or I twisted too hard and broke something - I didn't hear any odd noises or anything.

They finally started slipping at the arrow in the picture below underneath the clip.

 

[Mike Mall]

One of the good Korean movements.
There is a Japanese movement by Tochigi Tokei, that is basically the same movement.
Same design anyway, the Tochigi Tokei is chrome plated, but otherwise much the same.
Here is an example
On the ones I've had there is not only a clutch for the minute hand adjustment, but also for the hour hand.
It looks like yours has the hour hand indexed, and held on with a nut, so it's probably the same.
Spring forward, and fall back, are very easy on this one.

 

[Willie X]

You would normally remove the "C" clips from the winding arbors and slip off the 'stopwork' cogs. Then you can let the springs completely down into a clip/retainer.

When replacing the stopwork cog, you would wind the spring up tight, let it down one turn and replace the cog close to the locked position. You want the stopwork cog to stop/lock one full turn short of the wound up position.

Willie X

 

[rlynch106]

Good information, thanks. I haven't found very much on the internet about the Daewoo. Maybe my search terms aren't the best.

What are those cogs for? In case a spring breaks - to take up the power?

It also has an interesting strike fly - or maybe these aren't named flys?

 

[Willie X]

It limits the number of turns the spring can be wound and unwound. This helps prevent spring breakage and makes for a better timekeeping.

It's a common feature on many clocks, new and old.

Willie X

 

[Mike Phelan]

It also has an interesting strike fly - or maybe these aren't named flys?

I would call them flies. Never seen one like that.

 

[gmorse]

Hi Mike,

I would call them flies.

Turret clock experts that I know are quite adamant that they're 'flys' and not 'flies', contrary to normal English spelling convention!

Regards,

Graham

 

[Mike Phelan]

I'll stick with flies Maybe it's a UK vs USA thing?

 

[Willie X]

It's not that unusual. Here's one on an old Gilbert. Most will be on Asian clocks, post WW-II. I would call it a 'centrifugal brake' but I've never seen a 'clock' name put to this mechanism. Willie X