Implements for spreading powdered or granular materials

Claim 1

AN IMPLEMENT FOR SPREADING POWDERED OR GRANULAR MATERIALS COMPRISING A SUPPORTING FRAME INCLUDING COUPLING MEANS FOR CONNECTION TO A TRACTOR, A CONTAINER CARRIED BY SAID FRAME, A LOWER CYLINDRICAL PORTION ON SAID CONTAINER, A HORIZONTALLY DISPOSED ROTATABLE MATERIALS EJECTOR DISC ROTATABLY CARRIED BY SAID FRAME UNDER SAID CONTAINER, A CIRCULAR RAISED PORTION ON THE CENTRAL UPPER SURFACE OF SAID DISC, A PLURALITY OF RADIALLY EXTENDING DISTRIBUTING ARMS ATTACHED AROUND SAID DISC''S PERIPHERY, A VERTICAL SHAFT CENTRALLY CONNECTED TO THE UNDERSIDE OF SAID DISC, A CYLINDRICAL ANNULUS AROUND SAID LOWER PORTION OF SAID CONTAINER AND BEARING ON SAID DISC AROUND SAID CIRCULAR RAISED PORTION, OUTLET PORTS IN SAID ANNULUS, SEALING RIDGE MEANS INCORPORATED ON THE INSIDE OF SAID ANNULUS, POWER MEANS COMPRISING MEANS TO CONNECT TO THE POWER TAKE-OFF OF A TRACTOR INTERCONNECTED TO SAID SHAFT ROTATING SAID DISC, RING MEANS SNUGLY EMBRACING SAID ANNULUS AND INCLUDING SHUTTER PLATES BEARING ON SAID DISC AND SELECTIVELY COVERING PORTIONS OF SAID OUTLET PORTS, THE LOWER EDGES OF SAID ANNULUS AND SAID SHUTTER PLATES BEING BEVELED, OUTLET CONTROL MEANS FOR ROTATING SAID RING AND SAID ANNULUS RELATIVE TO EACH OTHER INCLUDING ROD MEANS TO ROTATE SAID ANNULUS, ARM MEANS TO ROTATE SAID RING, A SCALE ASSOCIATED WITH SAID ARM MEANS, CLAMP MEANS SELECTIVELY CLAMPING SAID ROD MEANS AND SAID ARM MEANS TOGETHER AT A POSITION REGISTERED ON SAID SCALE, RELEASABLE SECURING MEANS SECURING SAID ROD MEANS AND SAID ARM MEANS TO SAID FRAME, WHEREBY THE DIMENSIONS OF SAID OUTLET OPENINGS AND THEIR POSITION RELATIVE TO SAID FRAME IS CONTROLLABLE, AND AGITATION MEANS EXTENDING UPWARDLY FROM SAID DISC.