Francais | English | Espanõl

From Wikipedia, the free encyclopedia

Chain-linked Lewis or Chain Lewis is a lifting device made from two curved steel legs, linked by three steel rings. The legs fit into a seating cut in the top of the stone, above the centre of mass. It works by transferring the stone's own weight into leverage on the seating. When the top of the curved legs are pulled together by the rings, the bottom portions are forced into the lower part of the seating, thereby providing enough friction to lift the stone.