Press wheel tire with crust fracture bars

Claim 1

A TIRE FOR THE PRESS WHEEL OF A SEED PLANTING MACHINE, SAID TIRE COMPRISING: A TUBULAR BODY OF FLEXIBLE MATERIAL ADAPTED TO BE MOUNTED ON SAID PRESS WHEEL AND TO EXTEND ABOUT THE SAME, SAID BODY BEING PROVIDED WITH A SOIL-ENGAGING, PERIOPHERAL SURFACE THEREON DISPOSED FOR PACKING THE SOIL IN THE REGION ABOVE THE SEED AFTER THE LATTER HAS BEEN PLANTED; AND A PLURALITY OF ELONGATED, SPACED, OUTWARDLY PROJECTING BARS INTEGRAL WITH SAID PERIPHERAL SURFACE AND DISPOSED FOR FORMING DEPRESSIONS AND THEREBY AREAS OF WEAKNESS IN THE SOIL AT SAID REGION TO FACILITATE THE EMERGENCES OF THE CROP FORMED BY THE SEED THEREFROM, SAID PERIPHERAL SURFACE HAVING A PAIRO F OPPOSED, CIRCUMFERENTIALLY EXTENDING MARGINAL EDGES, SAID BARS BEING ANGULARLY DISPOSED RELATIVE TO A CIRCUMFERENTIALLY EXTENDING LINE MIDWAY BETWEEN SAID EDGES WITH THE INNER ENDS OF SAID BARS BEING DISPOSED SUBSTASNTIALLY AT SAID LINE AND WITH THE PROXIMAL ENDS OF ADJACENT BARS BEING SUBSTANTIALLY TRANSVERSELY ALIGNED, EACH BAR BEING PROVIDED WITH AN ELONGATED, OUTWARDLY PROJECTING MEMBER THEREON AT THE EXTREMITY THEREOF REMOTE FROM SAID PERIPHERAL SURFACE.