Bulk-hauling dump vehicles

Claim 1

A BULK-HAULING AND DUMPING ROAD VEHICLE ADAPTED TO PULL A BULK-HAULING AND DUMPING TRAILER AND TO RAISE AT LEAST A PART OF SAID TRAILER OFF THE GROUND WHILE SAID TRAILER EXTENDS REARWARDS FROM THE VEHICLE, SAID VEHICLE COMPRISING: (A) A CHASSIS FRAME, GROUND ENGAGING WHEELS, AND A DUMPING BODY MOUNTED ON SAID FRAME FOR REARWARD TILTING MOVEMENT, (B) COUPLING MEANS AT THE REAR OF SAID FRAME FOR ATTACHMENT TO A COUPLING ELEMENT OF SAID TRAILER, (C) A BOOM PIVOTALLY MOUNTED ON A REAR PART OF SAID FRAME ABOUT A TRANSVERSE PIVOT AXIS AND ADAPTED FOR CONNECTION TO SAID TRAILER, (D) POWER MEANS ON SAID FRAME FOR TILTING SAID BOOM FORWARDS AND THEREBY TO RAISE THE CONNECTED TRAILER PART AND FOR TILTING SAID DUMPING BODY FOLLOWING SAID FORWARD MOVEMENT OF THE BOOM, SAID POWER MEANS INCLUDING (1) TAKE-UP DRUM MEANS MOUNTED ON SAID FRAME AND INCLUDING POWERED DRIVING MEANS FOR OPERATING THE DRUM MEANS, (2) BOOM CABLE MEANS EXTENDING BETWEEN SAID BOOM AND SAID DRUM MEANS FOR PULLING THE BOOM FORWARDS, AND (3) A SHEAVE MOUNTED ON SAID BOOM AND DUMPING CABLE MEANS EXTENDING FROM A FORWARD PART OF SAID DUMPING BODY ABOUT SAID SHEAVE TO SAID DRUM MEANS TO TILT SAID DUMPING BODY, AND (E) AT LEAST ONE EXTENSIBLE HYDRAULIC RAM CONNECTED BETWEEN SAID FRAME AND SAID BOOM FOR MOVING SAID BOOM REARWARDLY.