Abstract: A paying out/winding in device eliminates torsion in a line in a rotary connection betweeen a fixed member and a mobile member to which respective ends of the line are fixed. This device comprises a fixed spool carrying a relatively small number of turns and fastened to the fixed member. A mobile spool near and coaxial with the fixed spool carries a relatively small number of turns and is fastened to the mobile member. An arm rotatable about the axis of the fixed and mobile spools carries a satellite pulley at its free end. It is rotatable about an axis inclined at a relatively small angle to the axis of the fixed and mobile pulleys. When rotating more slowly than the mobile spool, it transfers line from the mobile spool to the fixed spool or vice-versa. The arm is rotated by a system which comprises at least one sliding coupling having a primary member, a secondary member fastened to the arm and a first freewheel mechanism coupling the primary member to the mobile spool.

Abstract: A magnetic coupler employing hysteresis for coupling a driving motor to a winding and reeling machine to produce a constant torque independent of any slippage between the input and output of the coupler. The coupler includes a driving disc molded of magnetic particles in an insulating binder interfaced with a driven disc formed of a radial array of permanent magnets.