A double acting hydraulic cylinder with twin rods fitted on a frame, has a complete self contained 1:2 purchase system for traveller cars. The body of the cylinder with integrated purchase sheaves moves while the rods, dead end of lines and respective oil connections are fixed on the frame. Feeding of the cylinder is achieved trough the rods for a clean and slick system. No moving hoses. Fitting of the system is done by simply fixing the frame, no
extra purchase sheaves and no alignment or reinforcement needed for an easy installation on or under deck.
