Reinventing The Egyptian Pulley

by Stephen W. Blakely
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"Advanced" Egyptian Pulley Systems and Other Applications
The first sketch below shows a "Tandem" Egyptian Pulley.  Such a configuration would reduce pull rope stress as the rope passes over the Pulleys.

The second sketch shows a possible Egyptian Pulley system -- providing a 2:1 mechanical advantage.

The third sketch shows a cross section of an obelisk lift technique using "opposed" Egyptian Pulleys.
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