Patent ID: 7735272

Claim:
A device for tightening aligned rectangular elements comprising: a first part comprising a winch ( 24 ) for applying a force, an intermediate part comprising cable means for transmitting said force over a distance, and a third part comprising means for maintaining said force, said first part comprising a case having a flat surface for positioning said winch thereon for the application of said force, said winch ( 24 ) comprising means for rolling said cable means, said rectangular elements being upper, lower, and intermediate beams selected from the group consisting of wood, plastic, and concrete, said first part being located within an upper one of said beams; said third part being in a lower one of said beams, said cable means tightened to a maximum by said winch ( 24 ) and by a corresponding ratchet ( 25 ), said cable means passing through a passage having a first and a second portion from the upper beam ( 36 ), through the intermediate beams, and ending in said lower beam, around means of a steel stem ( 21 ) welded onto a lower steel disc ( 26 ) which under the effect of tension of said cable compresses a compression spring ( 30 ) against an intermediate disc of steel ( 28 ) and against one of said intermediate beams ( 40 ).