Abstract: A load rotating attachment for a lift truck provided with an elevating carriage has a back plate sub-assembly including an upright wall adapted to be secured to the carriage adjacent and forwardly thereof. A front plate sub-assembly has an upright wall juxtaposed to the back plate wall and pivotally mounted thereon for rotation relative thereto with the major planes of the walls in parallelism. An upright framework is fixed to and extends above the back plate wall and supports a hydraulic ram thereon. A fixed upright of the framework serves as a guide track for a movable guide having a roller arm with guide rollers supported thereon for tracking on the guide track. The piston rod of the ram is pivotally connected to a drive link which in turn is pivotally coupled between and to said movable guide and to the rotatable front wall for bodily travel and pivotal motion in a path extending partially around and radially offset from the pivotal mounting of the front and back walls. This produces a 180.degree.

Abstract: A power-up and power-down mast and carriage assembly for a lift truck of the type having a stationary mast section fixed to the truck, a movable inner mast section reciprocable within the stationary mast, a fork carriage movably associated with the inner mast section, a double-acting hydraulic ram having an extensible and retractable cylinder and piston rod assembly operatively connected between said mast sections for extending and retracting the inner mast section relative to the stationary mast section. Lost-motion couplings interconnect both power-up and power-down chains with the stationary mast and carriage in a closed loop chain rigging system. The lost-motion couplings each have a rod slidably through the interconnection with the carriage and stationary mast, and spaced stops operable to limit travel of the rod to a predetermined distance.