Flexibly suspended scraper receptacle

Claim 1

A VEHICLE COMPRISING A SUPPORT STRUCTURE, A FORWARDLY OPEN EARTH MANIPULATING RECEPTACLE FOR SAID VEHICLE, AN EARTH ENGAGING BLADE AT THE OPEN END OF SAID RECEPTACLE, AND SUSPENSION MEANS EACH CONNECTED WITH SAID SUPPORTING STRUCTURE AND WITH SAID RECEPTACLE TO THE REAR OF AND AHEAD OF THE BLADE LOCATION, CERTAIN OF SAID SUSPENSION MEANS INCLUDING RESILIENT MEANS TO INDUCE UP AND DOWN VIBRATORY DISPLACEMENT OF DIFFERENT PORTIONS OF SAID RECEPTACLE AND ITS BLADE AS THE LATTER PASSES THROUGH THE EARTH AND OVER THE SURFACE BEING TRAVELLED BY SAID VEHICLE, SAID CONNECTIONS OF SAID SUSPENSION MEANS WITH THE RECEPTACLE FORE AND AFT OF THE BLADE PROVIDING VARIABLE TILT TO THE BLADE UNDER OPERATION, AT LEAST ONE OF SAID SUSPENSION MEANS PROVIDING A VERTICALLY FLEXIBLE HITCH FRAME RIGIDLY CONNECTED WITH SAID RECEPTACLE AHEAD OF THE BLADE TO CAUSE SAID RECEPTACLE TO VIBRATE THE BLADE AS THE RECEPTACLE MOVES WITH SAID VEHICLE.