Pivotal connecting means for rotary disk cutter

Claim 1

IN COMBINATION WITH FIRST AND SECOND MEMBERS CAPABLE OF RELATIVE ROTARY MOVEMENT WITH RESPECT TO EACH OTHER IN PARALLEL PLANES, A UNITARY BOLT-LIKE ELEMENT HAVING A HEAD PART AT ONE END, A CYLINDRICAL BEARING PART OF LESS DIAMETER THAN SAID HEAD PART AND INTEGRAL WITH ONE SIDE THEREOF, SAID BEARING PART BEING RECEIVED IN A MATING OPENING IN THE FIRST OF SAID MEMBERS AND HAVING AN AXIAL LENGTH SLIGHTLY GREATER THAN THE CORRESPONDING THICKNESS OF SAID MEMBER, A NON-CIRCULAR SHANK PART INTEGRAL WITH SAID BEARING PART ON THE SIDE THEREOF OPPOSITE SAID HEAD PART, SAID SHANK PART BEING RECEIVED IN A COMPLEMENTARILY SHAPED HOLE IN SAID SECOND MEMBER AND HAVING AN AXIAL LENGTH SUBSTANTIALLY EQUAL TO THE THICKNESS OF SAID MEMBER, AN INTEGRAL SHOULDER AT THE JUNCTURE OF SAID SHANK AND BEARING PARTS AND EXTENDING RADIALLY BEYOND SAID SHANK PART AND IN ABUTTING ENGAGEMENT WITH SAID SECOND MEMBER RADIALLY BEYOND THE HOLE THEREIN, A THREADED PART INTEGRAL WITH THE END OF SAID SHANK PART OPPOSITE SAID SHOULDER AND EXTENDING BEYOND SAID MEMBER, AND A NUT ENGAGED WITH THE THREADS OF SAID THREADED PART.