400 Day Wurth Wheatsheaf

ivancooke

Registered User
Mar 3, 2009
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Banbridge, Northern Ireland.
Bought this Torsion Clock on everybodys favourite Auction site.
Had a few problems getting it to work. But with a little patience, have got it to function as it should.
Thinning s/spring down from 0.0045, and within the next few days should be keeping time.
A well worth while project.
Serial No. 1198.
Same number on base of pendulum.



Ivan. 86670.jpg 86671.jpg 86672.jpg 86673.jpg 86674.jpg
 

Kevin W.

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Apr 11, 2002
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Nice one Ivan, would love to display one like this.
 

ivancooke

Registered User
Mar 3, 2009
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Banbridge, Northern Ireland.
Thanks Kevin, Ken. It's not every day a clock like this comes along, so thought I'd have a go.
Always wondered how the Wille temperature pendulum adjusted to varying temperatures.
The middle stem coming up from the base has a loose sleeve. This sleeve seems to be made from a temperature sensitive metal. When the temperature changes it pushes the upper arms, that are hinged with pins. Raising these arms or lowering shortens or lengthens the suspension spring, and thus making the clock go faster or slower.
Ingenious !



Ivan. 86703.jpg 86704.jpg
 

marylander

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Sep 9, 2008
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Ivan, Thank you for the illustration. It is nice to see the upper arm in two different positions. Please confirm that the upper arm moves up at higher temperature.
Ming
 

ivancooke

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Mar 3, 2009
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Yes Ming, I presume a higher temperature would make the metal expand to shorten the s/spring , and lower temperature would make it contract back to normal.
I set the illustration up manually, just to show the effect.





Ivan.
 

Burkhard Rasch

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Jun 1, 2007
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What a wonderfull clock!Congrats!!Did You ever-or could You just for illustration purpose-put that pendulum in a freezer or "heat" it a bit with a hairdryer to see if this concept actually works?
Burkhard
 

ivancooke

Registered User
Mar 3, 2009
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Banbridge, Northern Ireland.
I tried it and it worked.
The first photo shows the pendulum at normal temperature.
I then hit it for about 3 - 4 minutes with a hair dryer, and as you can see in the second photo the arm did rise between 1 and 2mm.
Certainly proves the point.



Ivan. 86816.jpg 86817.jpg
 

Burkhard Rasch

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Great,that´s what I expected.Thanks for the pics!
Burkhard
 

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