The invention relates to an apparatus for suspending a load on a suspension rope, including a body (3) provided with a means (19, 20) for hanging the load, with a stationary member (6) and with a pivotable rocker arm member (7), between which the rope (2) passes, which are capable of immobilizing the body along the rope (2) when said body tilts in a direction determined by the load. Said body is also provided with a stationary abutment (22) and with a pivotal unlocking lever (14) capable of controlling the pivotal rocker arm member (7) such as to make the latter pivot until said abutment (22) and to cause said body (3) to tilt in the opposite direction when the rocker arm member (7) is bearing against said abutment (22).