Lawn mowers

Claim 1

A GLASS MOWER COMPRISING A FRAME, A HIGH SPEED MOTOR SUPPORTED ON SAID FRAME, A ROTATABLE SHAFT, A HOUSING THEREFOR SUPPORTED ON SAID FRAME, DRIVING MEANS CONNECTING SAID SHAFT TO SAID MOTOR THROUGH A CENTRIFUGAL COUPLING, TRACK WHEELS FOR GUIDING THE MOWER, A DRIVE ROLLER, DRIVING MEANS CONNECTING SAID DRIVE ROLLER WITH SAID MOTOR THROUGH REDUCTION GEARING, A PLURALITY OF CUTTING ELEMENTS CONSISTING OF SMALL PLATES HAVING HOLLOW CYLINDRICAL BOSSES AT ONE END AND CUTTING EDGE CURVED OUT OF THE PLANE OF THE PLATE AT THE OTHER END, THE CUTTING ELEMENTS BEING ARRANGED IN ROWS, THE ELEMENTS FO ONE ROW BEING STAGGERED IN RELATION TO THE ELEMENTS OF AN OTHER ROW, A PLURALITY OF FINS RADIALLY EXTENDING FROM SAID ROTATA BLE SHAFT A DISTANCE AT LEAST AS GREAT AS THE RADIAL LENGTH OF SAID CUTTING ELEMENTS AND SPACED CIRCUMF ERENTIALLY OF THE SHAFT HINGE BOSSES SPACED APART ON SAID FINS AT THE EDGES REMOTE FROM THE SHAFT, AND HINGE PINS DIRECTLY SECURING THE HOLLOW CYLINDRICAL BOSSES SAID CUTTING ELEMENTS IN PIVOTAL MOUNTING BETWEEN THE HINGE BOSSES ON SAID FINS.