Materials handling assembly

Claim 1

A MATERIALS HANDLING ASSEMBLY COMPRISING A PLURALITY OF OPEN-ENDED RAILROAD CARS COUPLED TOGETHER IN ENDTO-END RELATIONSHIP WITH OPPOSING CAR ENDS SEPARATE FROM ONE ANOTHER TO DEFINE A TRAIN WHICH RIDES OVER A TRACKED ROADBED, EACH OF SAID CARS COMPRISING A FLOOR HAVING CAR TRACKS THEREON, REMOVABLE TRACK JUMPERS REMOVABLY SECURED TO SAID CARS, EXTENDING BETWEEN OPPOSING CAR ENDS AND JOINING THE CAR TRACKS ON ADJACENT CARS TO PRODUCE SUBSTANTIALLY CONTINUOUS CAR TRACKS ALONG SAID TRAIN, AND A PLURALITY OF MATERIALS-CARRYING DOLLEYS RIDING ON AND MOVABLE ALONG SAID CAR TRACKS, MEANS FOR SELECTIVELY SECURING SAID DOLLEYS IN PLACE ON AND PERMITTING SAID DOLLEYS TO MOVE ALONG SAID CAR TRACKS, SAID DOLLEYS BEING MOVABLE FROM CAR TO CAR WHEN SAID TRACK JUMPERS ARE IN PLACE, AND, IN COMBINATION THEREWITH, CRANE MEANS OPERATIVELY MOUNTED ON SAID TRACK ROADBED FOR MOVEMENT THEREOVER WITH SAID TRAIN, SAID CRANE MEANS BEING EFFECTIVE TO ENGAGE A DOLLEY ON A CAR ADJACENT SAID CRANE MEANS AND TO ENGAGE THE MATERIALS BY SAID DOLLEY AND TO LIFT SAID MATERIALS AND SAID DOLLEY FROM SAID CAR AND DEPOSIT THEM ELSEWHERE, AND A SECOND CRANE MEANS OPERATIVELY MOUNTED ON SAID TRACK ROADBED FOR MOVEMENT THEREOVER WITH SAID TRAIN, SAID SECOND CRANE MEANS BEING SPACED FROM SAID FIRST MENTIONED CRANE MEANS IN THE DIRECTION OF THE LENGTH OF SAID ROADBED BY A DISTANCE GREATER THAN THE LENGTH OF A DOLLEY, SAID FIRST CRANE MEANS BEING EFFECTIVE TO PLACE AN UNLOADED DOLLEY IN SAID SPACE BETWEEN ITSELF AND SAID SECOND CRANE MEANS, AND SAID SECOND CRANE MEANS BEING EFFECTIVE TO LIFT SAID UNLOADED DOLLEY FROM SAID SPACE AND PLACE IT ON TRACKS ON THE OTHER SIDE OF SAID SECOND CRANE MEANS FROM SAID SPACE.