External main frame pin

Claim 1

IN A GYRATORY CRUSHER HAVING A MAIN FRAME, A HEAD WITHIN THE FRAME MOUNTED FOR GYRATORY MOVEMENT, A BOWL IN THE MAIN FRAME SPACED FROM THE HEAD TO DEFINE A CRUSHING CAVITY, AN ADJUSTMENT RING WITH A CONTINUOUS EXTENSION FROM THE BOWL TO RAISE AND LOWER THE BOWL, SAID RING SEATED ON A CONTINUOUS EXTENSION FROM THE MAIN FRAME, A COMBINATION TO ALLOW RELEASING MOVEMENT OF THE ADJUSTMENT RING, YET PREVENT ROTATIONAL MOVEMENT OF THE ADJUSTMENT RING, WHICH INCLUDES, A PLURALITY OF SPRING CLUSTER UNITS, EACH UNIT HAVING A GROUP OF INDIVIDUAL SPRINGS, SAID CLUSTER UNITS CIRCUMFERENTIALLY DISTRIBUTED BELOW THE EXTENSIONS AND RELEASABLY HOLDING THE RING DOWN ON THE FRAME, SAID CLUSTER UNITS SEPARATED BY A SPACE ON THE EXTENSIONS SUBSTANTIALLY GREATER THAN THE SPACE BETWEEN THE INDIVIDUAL SPRINGS IN THE CLUSTER UNIT, A TORSION PIN IN A SPACE OF THE EXTENSIONS BETWEEN ADJACENT CLUSTER UNITS, SAID TORSION PIN SEATED IN A BORE FORMED IN THE EXTENSIONS, AND EXTENSIONS GENERALLY COEXTENSIVE WITH THE SPRING CLUSTERS, SAID PIN ADAPTED TO BE DROPPED INTO THE BORE AND REMOVED FROM THE BORE WITHOUT BEING SECURED TO THE EXTENSIONS, AND SAID PIN BEING OBSERVABLE FOR WEAR AT ALL TIMES IN THE BORE.