It is the work of artist Simon Faithfull and will be operated by hand, using ropes, helium and pulleys.

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At the time the company, which had just 7 employees, manufactured flat belt pulleys, V-belt pulleys, grinding mills and forges.

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The couple also found no evidence of a pulley system: there were no pulleys or holes in the ceramic walls in the bathroom, Mary Todd said.

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The pair of motors, gearboxes and pulleys would then be used to provide assistance in two degrees of freedom, to help stroke victims slowly build back up their strength.

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According to reports from the AP and a press release on the Geokinetics website, the men had initially evacated the platform on a liftboat, which can be lowered and raised from the rig by mechanical pulleys.

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