Container loading and unloading mechanism

Claim 1

IN A CONTAINER LOADING AND UNLOADING MECHANISM OF THE CHARACTER DESCRIBED, THE COMBINATION OF A FRAME ADAPTED TO BE INCLINED AND TO RECEIVE AND SUPPORT THEREON A SEPARABLE CONTAINER; CONNECTING MEANS ON THE FRAME AND MOVABLE LENGTHWISE OF THE FRAME FOR RELEASABLY ENGAGING AND MOVING A CONTAINER ONTO OR OFF OF THE FRAME; LATCH MEANS ON THE FRAME MOVABLE TO A FIRST POSITION TO ENGAGE A CONTAINER AT ANY ONE OF A NUMBER OF POINTS FOR PREVENTING MOVEMENT OF THE CONTAINER OFF THE FRAME WHEN THE FRAME IS INCLINED AND THE CONNECTING MEANS IS NOT ENGAGED WITH THE CONTAINER, AND MOVABLE TO A SECOND POSITION TO ALLOW MOVEMENT OF THE CONTAINER ONTO OR OFF OF THE FRAME; SPRING MEANS FOR BIASING THE LATCH MEANS TO THE FIRST POSITION; FLUID PRESSURE ACTUATED POWER MEANS FOR MOVING THE LATCH MEANS TO THE SECOND POSITION; OPERATOR-CONTROLLED VALVE MEANS FOR CONTROLLING THE FLOW OF FLUID PRESSURE TO OR EXHAUSTING FLUID PRESSURE FROM THE POWER MEANS; SWITCH MEANS FOR ACTUATING THE VALVE MEANS TO EXHAUST FLUID PRESNECTING MEANS IS ADJACENT ONE END OF THE FRAME.