Enclosure device e.g. sun protection device secured at building wall, has one bracing cable that is arranged parallel to other cable, and led across one pulley arranged beside other pulley to direct opposing force to beat other cable

摘要

The device has a mast (4) which is arranged with first pulley for feeding first bracing cable (5) hung with a weight (7). The weight is lifted by a wind force attacked at a sail (1), such that first bracing cable is rolled over the first pulley. Second bracing cable (6) fastened with the weight is arranged parallel to first bracing cable, and led across second pulley (10) arranged beside the first pulley, such that opposing force is directed for beating the first bracing cable.