Industrial trucks

Claim 1

AN INDUSTRIAL TRUCK COMPRISING IN COMBINATION A CHASSIS, AN OPERATOR''S PLATFORM VERTICALLY MOVABLE ON SAID CHASSIS, AN ELEVATOR FOR FEEDING ARTICLES TO AN OVERHEAD CONVEYOR, AND MEANS SUPPORTING SAID ELEVATOR FOR VERTICAL MOVEMENT RELATIVE TO SAID CHASSIS, SAID ELEVATOR COMPRISING FIRST AND SECOND ENDLESS FLEXIBLE MEMBERS, MEANS SUPPORTING SAID MEMBERS FOR MOVEMENT IN PARALLEL PATHS HAVING AN UPWARD RUN AND DOWNWARD RUN, THIRD AND FOURTH ENDLESS FLEXIBLE MEMBERS, MEANS SUPPORTING THE THIRD AND FOURTH FLEXIBLE MEMBERS FOR MOVEMENT IN PARALLEL PATHS HAVING UPWARD RUNS PARALLEL TO AND SPACED FROMTHE UPWARD RUNS OF THE FIRST AND SECOND MEMBERS BY A PREDETERMINED DISTANCE, AND DOWNWARD RUNS PARALLEL TO THE DOWNWARD RUNS OF THE FIRST AND SECOND MEMBERS AND SPACED THEREFROM BY A DISTANCE SMALLER THAN SAID PREDETERMINED DISTANCE, AND A FLEXIBLE ARTICLE SUPPORT SECURED TO THE FOUR MEMBERS, THE ARRNAGEMENT BEING SUCH THAT ON THE UPWARD RUN SAID SUPPORT WILL BE SUBSTANTIALLY HORIZONTAL, BUT ON THE DOWNWARD RUN SAID SUPPORT WILL BE INCLINED TO THE HORIZONTAL, AND SAID ELEVATOR INCLUDING PARTS MOVABLE VERTICALLY WITH SAID PLATFORM AND AROUND WHICH THE FLEXIBLE MEMBERS MOVE, SO THAT ALTHOUGH THE LENGTHS OF THE FLEXIBLE MEMBERS ARE FIXED, THE POSITION AT WHICH THE SUPPORTS BECOME HORIZONTAL AT THE COMMENCEMENT OF SAID UPWARD RUN VARIES WITH, AND IS ADJACENT TO, THE OPERATOR''S PLATFORM.