Spreader for artificial fertilizers and other granular material

Claim 1

IN A SPREADER FOR ARTIFICIAL FERTILIZERS AND OTHER GRANULAR MATERIALS, A TANK FOR CONTAINING THE MATERIAL TO BE SPREAD, SAID TANK HAVING A FEEDING OPENING IN THE BOTTOM THEREOF, A ROTOR MOUNTED BELOW SAID FEEDING OPENING, EJECTING SCOOPS ON THE ROTOR EXTENDING RADIALLY THEREOF, MEANS FOR DRIVING SAID ROTOR, FEEDING MEANS WITHIN SAID TANK, SAID FEEDING MEANS INCLUDING A HORIZONTAL SHAFT EXTENDING INTO THE TANK AND LOCATED ABOVE SAID FEEDING OPENING, MEANS OPERABLY CONNECTED WITH SAID SHAFT FOR OSCILLATING SAID SHAFT IN OPPOSITE DIRECTIONS, A BLADE CARRIED BY SAID SHAFT, AND A FIXED COMPONENT POSITIONED BELOW THE FEEDING OPENING BETWEEN SAID BLADE AND ROTOR AND HAVING AN ARCUATE SURFACE CONCENTRIC TO THE AXIS OF SAID SHAFT FOR PREVENTING THE DIRECT PASSAGE OF MATERIAL FROM THE FEEDING OPENING TO THE ROTOR, WITH THE OSCILLATING MOVEMENT OF THE BLADE SERVING TO MOVE A QUANTITY OF THE MATERIAL OVER THE EDGES OF THE FIXED COMPONENT ONTO THE ROTOR.