Fork lift truck

A fork lift truck comprising:

• a longitudinally extending frame having an operator's station;
• an operator's protective structure extending in front, over, and in back of said operator's station in the form of an overhead guard having an upwardly extending channel member having its lower end portion fastened to a first portion of the frame, an upwardly extending hollow post having its lower end portion fastened to a second portion of the frame, and a longitudinally extending hollow beam extending between and secured to the upper end portions of the channel member and the post;
• a load supporting device including forks mounted for up and down movement along the channel member;
• a hydraulic lift jack disposed within and completely surrounded by the post and having a first element anchored to the post and a second element movable relative to the first element;
• a first sheave rotatably attached to the second element;
• a second sheave rotatably mounted within the passageway formed by the post and beam at a location adjacent the post;
• a third sheave rotatably attached to the protective structure adjacent the channel member;
• and
• an elongated flexible element connected to the load supporting device and extending upwardly therefrom around the third sheave, through the beam, around the second sheave, downwardly and around the first sheave and anchored to the post.