Abstract: A device for suspending loads includes an adjusting device (1) to permit the position of loads to be adjusted for height and a structure (9, 11) of articulated bars which can be extended as a double pantograph. Connectors to the overlying structure and a connection to the suspended loads are provided. Combined horizontal (17A, 1713; 17C, 17D) and vertical (28; 30) guides fixed to the connection means (12, 14). Corresponding pairs of terminal bars in the structure of articulated bars slide in the combined horizontal (17A, 1713; 17C, 17D) and vertical (28; 30) guides.

Abstract: A structure composed of articulated rods extending between a fixed attachment point and a free attachment point for the object to be supported. This structure is extensible in the direction of the straight line joining the fixed attachment point and the free attachment point, and is symmetrical about this line and more or less rigid in directions perpendicular to the direction of extension. The spool rotates about a pin inserted in said structure at a point close to the free attachment point. A cord is connected to a spring for winding up the cord. The cord has one end fixed to said structure close to said line at a point between the fixed attachment point and the spool. The other end of the cord is fixed to the circumference of the spool.