Power lawnmower

Claim 1

IN A LAWNMOWER HAVING A BASE FRAME AND A POWER DRIVEN SHAFT JOURNALED THEREON; THE IMPROVEMENT COMPRISING A FORWARDLY EXTENDING HOUSING SECURED TO SAID FRAME, A SLEEVE ROCKABLY MOUNTED AND RETAINED ON THE FORWARD END OF THE SAID HOUSING, A MOUNTING PLATE SECURED TO AND PROJECTED FORWARDLY OF SAID SLEEVE, A PAIR OF VERTICALLY SPACED TRANSVERSELY EXTENDING SERRATED BLADE GUIDES CENTRALLY MOUNTED AND SECURED UPON SAID MOUNTING PLATE, ROLLERS ADJACENT AND MOVABLY SUPPORTING OPPOSITE ENDS OF SAID GUIDES, AND ELONGATED TRANSVERSELY RECIPROCAL SERRATED CUTTING BLADE INTERPOSED AND SLIDABLY POSITIONED BETWEEN AND COOPERABLE WITH SAID GUIDES, CAM MEANS ON SAID DRIVEN SHAFT, A CANTLILEVE PIVOTALLY MOUNTED INTERMEDIATE ITS ENDS WITHIN SAID HOUSING WITH ONE END PROJECTING LATERALLY THEREOF AND WITH ITS OTHER END PROJECTING AXIALLY OUTWARD THEREFROM AND LOOSELY CONNECTED TO SAID BLADE, A RECIPROCAL CONNECTING ROD AT ONE END LOOSELY RECEIVING SAID CAM MEANS AND AT ITS OTHER END FLEXIBLY JOINED TO SAID ONE END OF SAID CANTILEVER, SAID HOUSING BEING HORIZONTALLY DISPOSED AND OF CYLINDRICAL SHAPE, THERE BEING A PAIR OF SPACED ARCUATE SLOTS FORMED THROUGH THE WALL OF SAID SLEEVE, AND RETAINING GUIDE PINS ON SAID HOUSING PROJECTING RADIALLY THROUGH SAID SLOTS RESPECTIVELY.