Abstract: A forwardly extending elevating frame is pivoted at the rear of a wheelchair main frame for vertical tilting movement. A leveling frame extends rearwardly from a pivot connection at the forward end of the elevating frame for relative vertical tilting movement. A pair of chains extend downwardly from a suspension bar on the main frame, engage a pair of sprockets supported on the elevating and leveling frames, and are trained in loops about idlers carried on the two tiltable frames. A lifting seat is supported on and forwardly of the leveling frame and is tiltable between a horizontal use position and a hanging stored position. Hand levers, accessible to a person on the lifting seat, are movable up and down to rotate the sprockets through pawl and ratchet connections. This causes the sprockets to climb the chains and elevate the person on the lifting seat to the level of the wheelchair seat.