[time-nuts] The pendulum problem...

Max Robinson max at maxsmusicplace.com
Fri Jan 31 14:07:40 EST 2014


The escapement wheel needs to have a little torque on it so it will turn as 
the pendulum swings.

Regards.

Max.  K 4 O DS.

Email: max at maxsmusicplace.com

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----- Original Message ----- 
From: "Hal Murray" <hmurray at megapathdsl.net>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Cc: <hmurray at megapathdsl.net>
Sent: Friday, January 31, 2014 12:49 PM
Subject: Re: [time-nuts] The pendulum problem...


>
> wa1zms at att.net said:
>> I think the best I can do is to use the basic design from the article 
>> that
>> David noted and will have to adjust the clock once a week after winding.
>
> How far off does it drift while you are winding?
>
> I haven't wound a pendulum clock since watching my grandfather (and maybe
> helping) when I was a small child.  I think it was basically lift the 
> weight
> with one hand and pull down gently on the other end of the chain with the
> other hand.  I assume there was ratchet in there.
>
> Is that the way your clock works?  Can you "wind" it a little bit while 
> the
> pendulum is swinging and then let go so the weight does its thing when the
> pendulum gets to the end?  Repeat ...
>
> ------
>
> I assume you are familiar with the Scientific American article from many
> years ago.  They put a magnet on the pendulum and used that to kick the
> pendulum at the right time.  As well as keeping good time, it also 
> supplied
> power so you didn't have to wind it.
>
>
> -- 
> These are my opinions.  I hate spam.
>
>
>
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