Fletcher Capstan Table

Hi, has anyone tried drawing the mechanism for the ‘Fletcher Capstan table’? I would really like to try and make one and was hoping for a leg up with the mechanical design.
If you havent heard of it, look it up on utube, its very cool.

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Very kind, thank you both.

Further. To this, I’ve started modelling my own design thoughts. Is there a way I can model the movements of an iris, to better understand the constraints of the arm and leaf movements?
Thanks, Tom

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