Rotary earth moving apparatus

Claim 1

IN A CULTIVATOR, AN ELONGATED ROTARY SHAFT, MEANS FOR PRODUCING ROTATION IN SAID SHAFT, A PLURALITY OF SCOOPING UNITS FIXED TO AND DISTRIBUTED ALONG SAID SHAFT, SAID UNITS INCLUDING A PAIR OF END UNITS AND A PLURALITY OF INTERMEDIATE UNITS SITUATED THEREBETWEEN, ALL OF SAID UNITS BEING SPACED FROM EACH OTHER FOR CULTIVATING ROWS DURING ROTATION OF SAID SHAFT WHILE SAID SHAFT IS ADVANCED ALONG A PATH ACROSS WHICH SAID SHAFT EXTENDS, EACH OF SAID INTERMEDIATE UNITS INCLUDING A PAIR OF PARALLEL DISCS PERPENDICULAR TO SAID SHAFT AND THROUGH WHICH SAID SHAFT EXTENDS, A HUB SITUATED BETWEEN SAID DISCS AND THROUGH WHICH SAID SHAFT EXTENDS, SAID HUB BEING SHORTER THAN THE DISTANCE BETWEEN SAID DISCS AND FIXED TO ONE OF SAID DISCS, AND A PLURALITY OF EARTH-SCOOPING MEMBERS FIXED TO SAID HUB AND RESPECTIVELY HAVING SIDE EDGES FIXED TO SAID ONE DISC, EACH OF SAID SCOOPING MEMBERS EXTENDING AT PORTIONS DISTANT FROM SAID HUB LATERALLY BEYOND THE LATTER INTO ENGAGEMENT WITH THE OTHER OF SAID DISCS AND SAID PORTIONS OF SAID SCOOP MEMBERS TERMINATING IN SIDE EDGES WHICH ARE FIXED TO SAID OTHER DISC, SAID HUB AND SCOOP MEMBERS DEFINING WITH SAID OTHER DISC AN OPENING THROUGH WHICH EARTH MAY FALL, AND SAID HUBS BEING FIXED TO SAID SHAFT FOR ROTATION THEREWITH, SAID END SCOOPING UNITS INCLUDING A SINGLE DISC A HUB FIXED TO SAID INNER DISC AND EXTENDING THEREFROM AWAY FROM SAID INTERMEDIATE UNITS, SAID LATTER HUB BEING FIXED TO SAID SHAFT, AND A PLURALITY OF EARTH-SCOOPING MEMBERS FIXED TO SAID LATTER HUB AND HAVING SIDE EDGES FIXED TO SAID DISC OF EACH OF SAID END UNITS, SAID SCOOPING MEMBERS OF SAID END UNITS BEING SUBSTANTIALLY IDENTICAL WITH THOSE OF SAID INTERMEDIATE UNITS.