a trolley assembly comprising means for supporting a spreader assembly , said means including cables , said spreader assembly adapted to engage at least one freight device ; a first carrier portion and a second carrier portion ; the supporting means adapted to connect the spreader assembly to at least one of said carrier portions and ; a trolley separation means for selectively varying the relative position of the first and second carrier portions wherein the adjustment of the trolley separation means is such that the cables are maintained in a substantially vertical orientation .