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Re: Stone Shifting
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Elisha Otis invented an automatic braking system for lifts in 1854. It's basically a ratchet system with the pawls held off the ratchet by the tension in the cable. When (if) the cable breaks the pawls are released and engage with the ratchet, thus preventing the lift from plumeting.

Quite similar to your idea I thought.


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Steve Gray
Posted by Steve Gray
24th August 2003ce
23:39

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Re: Stone Shifting (nigelswift)

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Re: Stone Shifting (nigelswift)

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