Constructive dialog available double with eyelash

摘要

"Constructive dialog available in double blind.It consists of a frame (1), where they can be two pieces of glass (3) in parallel planes, which are (4) moves a shutter vanes (5), suspended by straps (6),That wrap themselves in spools (7) attached to the axle (8) whose end has a spool (10), where mrola - if the rope drive (11).The tilting of the vanes is made by straps (12) wound in reels (13) fixed to the shaft (14), in whose end has a pulley (16) through which the line of control (17).