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vintage coca cola wall clock

plove53

Registered User
Dec 24, 2009
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I bought this cute vintage coca cola clock. It works, but, it runs very slow. When I got it it had a very short (4 1/2") pendulum, and it was not keeping time. So I bought a 9 1/2" pendulum, and the clocks still runs slow (about an hour 1/2 in ~24 hours - I did adjust the bob). Should I get a shorter pendulum, or a lighter bob? And what size bob would this have?

Thanks for any suggestions.

I believe this was made in Asia, because it only strikes out the hour (not the half); I read that someplace.

Other then replacing the glass, its a cute clock. Anyone know where I can buy a coca cola glass? OR should I buy a glass, and add a acid "in bottles" front?

Thanks,
-p
 

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harold bain

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Hi. Plove. A picture of the movement may confirm it's origins. The pendulum does look Asian. Don't know where you may find a Coca-Cola glass for it.
 

harold bain

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The movement looks to me like a Japanese copy of an Ansonia movement. Did you get the clock on ebay?
 

harold bain

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The style of the case suggests possibly 1930's. But the dial could have been reproduced at any time.
 

harold bain

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bought this cute vintage coca cola clock. It works, but, it runs very slow. When I got it it had a very short (4 1/2") pendulum, and it was not keeping time. So I bought a 9 1/2" pendulum, and the clocks still runs slow (about an hour 1/2 in ~24 hours - I did adjust the bob). Should I get a shorter pendulum, or a lighter bob? And what size bob would this have?
If you are having problems with it running slow, a longer pendulum will just make it slower. These movements don't typically have very heavy pendulums. How far out was it with the pendulum it came with?
 

shutterbug

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You can't change pendulum lengths. If the clock was running slow with a short pendulum, it will run even slower with a longer one. However, the pendulum looks about right for the case. Any chance the movement has been changed? How much time was it losing with the short pendulum?
 

bangster

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What are some of the things —besides pendulum length— that could cause a clock to run slow, without quitting altogether??:confused:
 

Willie X

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Feb 9, 2008
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plov,

The pendulum in the photo looks about right. Just make it shorter, about 1/2" at a time, until you get a good rate. Asian clocks often have pendulum bobs that are higher than the center of the glass. Older American and German clocks are usually well below the center of the glass.

As already mentioned, the pendulum position can't be varied much, it has to be a certain length and that's it. Pendulum length can be changed, but this will require some modifications of the movement.

Willie X
 

plove53

Registered User
Dec 24, 2009
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plov,

The pendulum in the photo looks about right. Just make it shorter, about 1/2" at a time, until you get a good rate. Asian clocks often have pendulum bobs that are higher than the center of the glass. Older American and German clocks are usually well below the center of the glass.

As already mentioned, the pendulum position can't be varied much, it has to be a certain length and that's it. Pendulum length can be changed, but this will require some modifications of the movement.

Willie X
Thanks... I'll try that 1/2" trick. The bob that came with it was very heavy.

Now its about 1 1/2 hour slow in around 24 hours time.

Thanks all,
-p
 

Gordon Andersen

NAWCC Member
Oct 4, 2000
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Good afternoon,

You could also add some weight to the pendulum rod above the bob. This will raise the center of gravity, which will allow the clock to run faster.
Give it a try.

Gordon Andersen
Adams, Wisconsin
 

The Tick Doc

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Dec 30, 2007
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What are some of the things —besides pendulum length— that could cause a clock to run slow, without quitting altogether??:confused:
If the suspention spring is to thin the clock will run slow, because it has to much over swing. A thicker spring will decrease the travel of the pendulum, thus speading the clock up. Over swing = time traveled by the pend , reduce the time traveled by the pend in the over swing will make it tick and tock moore often , ther fore speading the clock.... good luck...................TTD
 

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