Spreader attachment

Claim 1

IN A SHOULDER SPREADING VEHICLE COMPRISING A REAR MOTOR DRIVEN RAOD ENGAGING PROPELLING UNIT AND A FRONT ATTACHMENT UNIT COUPLED THERETO IN LONGITUDINALLY ALIGNMENT AND PROPELLED FORWARDLY THEREBY SAID REAR PROPELLING UNIT HAVING AN OPERATOR''S STATION EMBODYING CONTROLS FOR STEERING SAID SHOULDER SPREADING VEHICLE AND FOR CONTROLLING THE SHOULDER SPREADING OPERATION, SAID FRONT ATTACHMENT UNIT COMPRISING SOLID RUBBER TIRED CASTER ROAD WHEELS SPACED A DISTANCE SUFFICIENT TO RECEIVE A DUMP TRUCK BODY BETWEEN THEM AT THE FRONT, A HOPPER SUPPORTED ON SAID ROAD WHEELS FOR RECEIVING FILL MATERIAL FROM A DUMP TRUCK WHICH TRAVELS AHEAD OF SAID FRONT ATTACHMENT UNIT, BETWEEN SAID CASTER ROAD WHEELS, WHEREBY FILL MATERIAL IN THE HOPPER WILL HOLD THE FRONT ATTACHMENT UNIT FIRMLY TO THE ROAD, A CONVEYOR TRAVELLING IN THE LOWER PORTION OF SAID HOPPER FOR A DISCHARGING FILL MATERIAL FROM SAID HOPPER TO ONE SIDE OF SAID ATTACHMENT UNIT, A RELATIVELY LONG STRIKE-OFF BLADE PROJECTING DIAGONALLY OUTWARDLY AND REARWARDLY FROM SAID ATTACHMENT UNIT FOR RECEIVING FILL MATERAIL DISCHARGED BY SAID CONVEYOR AND FOR SPREADING SUCH MATERIAL OUTWARDLY AND STRIKING IT OFF AT A PREDETERMINED LEVEL, SAID STRIKE-OFF BLADE HAVING ITS INNER FRONT END PIVOTALLY CONNECTED WITH SAID ATTACHMENT UNIT AT A POINT DISPOSED REARWARDLY OF AND IN RELATIVELY CLOSE PROXIMITY TO THE POINT OF DISCHARGE OF THE FILL MATERIAL FROM SAID CONVEYOR, AN EXTENDING REARWARDLY AT A RELATIVELY SHARP ANGLE WHEREBY TO EFFECT A SUBSTANTIALLY UNIFORM DISTRIBUTION OF THE FILL MATERIAL OUT ALONG THE ENTIRE LENGTH OF THE BLADE, SAID INNER FRONT CONNECTION COMPRISING A UNIVERSAL MECHANISM HAVING A SUBSTANTIALLY VERTICAL AXIS AND A HORIZONTAL AXIS PIVOT MEANS ACCOMMODATING HORIZONTAL AND VERTICAL ANGULATION OF SAID BLADE RELATIVE TO SAID SHOULDER SPREADING VEHICLE, MEANS FOR VERTICALLY ADJUSTING THE STRIKE-OFF LEVEL OF THE INNER END OF SAID STRIKE-OFF BLADE, AN UPRIGHT STRUT ON SAID ATTACHMENT UNIT ABOVE THE LAST MENTIONED MEANS, OUTER REAR CONNECTING MECHANISM PIVOTALLY CONNECTING AN OUTER REAR PORTION OF SAID STRIKE-OFF BLADE WITH SAID ATTACHMENT UNIT AND INCLUDING AN ADJUSTABLE FALL MEANS SUPPORTING THE OUTER END OF SAID STRIKE-OFF BLADE FROM THE STRUT FOR ADJUSTING THE STRIKE-OFF LEVEL OF THE OUTER END OF SAID STRIKE-OFF BLADE WITH RESPECT TO THE FRONT ATTACHMENT UNIT, A SIDE DRAFT SUSTAINING BOOM PIVOTALLY CONNECTED AT ITS OUTER END WITH AN OUTER PORTION OF SAID STRIKE-OFF BLADE AND EXTENDING INWARDLY FROM THE BACK SIDE OF SAID BLADE TO SAID PROPELLING UNIT, WHEREBY TO HOLD SAID STRIKE-OFF BLADE DOWN AT ITS STRIKE-OFF LEVEL AS A FLEXURE STRESS AND TO BEAR A SUBSTANTIAL PORTION OF THE SIDE DRAFT EXERTED BY SAID FILL MATERIAL BEING DEFLECTED OUTWARDLY ALONG SAID STRIKE-OFF BLADE IS BORNE AS A COMPRESSION STRESS IN SAID BOOM.