Plow attachment for vehicles

Claim 1

A VEHICLE ATTACHMENT COMPRISING, A MOUNTING FRAME FIXEDLY ATTACHABLE TO A VEHICLE AND HAVING A RIGID UPSTANDING ARM FORMED INTEGRAL WITH THE FORWARD END THEREOF, A CARRIER FRAME PIVOTALLY ATTACHED TO THE FORWARD END OF SAID MOUNTING FRAME FOR SWINGING MOVEMENT IN A SUBSTANTIALLY VERTICAL PLANE, A PLOW BLADE PIVOTALLY ATTACHED AT A MEDIAL PORTION THEREOF TO THE FREE END OF SAID CARRIER FRAME FOR SWINGING MOVEMENT IN A HORIZONTAL PLANE ABOUT A VERTICAL PIVOT, ACTUATING MEANS HINGEDLY CONNECTED BETWEEN SAID CARRIER FRAME AND SAID PLOW BLADE FOR SWINGING SAID PLOW BLADE ABOUT ITS PIVOT, AND HYDRAULIC ACTUATING MEANS CONNECTED BETWEEN THE UPSTANDING ARM OF SAID MOUNTING FRAME AND THE FREE END OF SAID CARRIER FRAME FOR SWINGING SAID CARRIER FRAME ABOUT ITS PIVOT AXIS TO THEREBY RAISE AND LOWER SAID PLOW BLADE, SAID HYDRAULIC ACTUATING MEANS BEING CONNECTED TO SAID CARRIER FRAME BY A PIN OPERATING WITHIN A SLOT EXTENDING LONGITUDINALLY OF SAID CARRIER FRAME, WHEREBY SAID ACTUATING MEANS MAY BE ADJUSTED FROM A POSITION WHEREIN THE FREE END OF THE CARRIER FRAME IS PERMITTED LIMITED FREE SWINGING MOVEMENT TO A POSITION WHEREIN IT IS PLACED UNDER CONSTANT DOWN PRESSURE.