Stock feeder

Claim 1

IN A STOCK FEEDER, AN ELONGATED HORIZONTALLY EXTENDING ROTATABLE CONTAINER HAVING A LONGITUDINAL SLOT, AN AUGER ROTATABLE IN SAID CONTAINER, SAID AUGER HAVING FLIGHTS ENGAGEABLE WITH SAID CONTAINER AND BEING OPERABLE TO CONVEY AND DISTRIBUTE FEED ALONG THE LENGTH THEREOF WHEN SAID SLOT IS IN AN UPPER POSITION, SAID FEED BEING DISCHARGED ON ROTATION OF SAID CONTAINER AND MOVEMENT OF SAID SLOT TO A LOWER POSITION, A ROTATABLE DRIVE SHAFT, MEANS CONNECTING SAID SHAFT TO SAID CONTAINER TO ROTATE THE CONTAINER, AND IMPROVED CLUTCH MEANS TO INTERMITTENTLY ROTATE SAID SHAFT, SAID CLUTCH MEANS COMPRISING A DRIVE MEMBER FREELY ROTATABLY SUPPORTED ON SAID SHAFT AND HAVING AT LEAST ONE DRIVE ELEMENT THEREON, MEANS ROTATING SAID DRIVE MEMBER IN A GIVEN DIRECTION, A DRIVEN MEMBER AFFIXED TO SAID SHAFT AND COAXIAL TO SAID DRIVE MEMBER, A PAWL SUPPORTED ON SAID DRIVEN MEMBER FOR PIVOTAL MOVEMENT ABOUT AN AXIS PARALLEL TO THE SHAFT AXIS AND ECCENTRIC THERETO, SAID PAWL HAVING A CONTROL ARM AND A DRIVE ARM, SAID CONTROL ARM PROJECTING RADIALLY OUTWARDLY OF SAID DRIVEN MEMBER, SAID DRIVE ARM HAVING A DOG MOVABLE IN A RADIAL DIRECTION AND BEING ENGAGEABLE WITH SAID DRIVE ELEMENT ON SAID DRIVE MEMBER WHEN THE PAWL IS PIVOTED IN ONE DIRECTION, A FIRST TENSION SPRING INTERCONNECTED BETWEEN SAID PAWL AND SAID DRIVEN MEMBER AND NORMALLY PIVOTING SAID PAWL IN SAID ONE DIRECTION TO A POSITION WHEREIN SAID DRIVE ARM DOG IS IN DRIVING ENGAGEMENT WITH SAID DRIVE ELEMENT ON SAID DRIVE MEMBER, A LEVER PIVOTALLY SUPPORTED ON SAID DRIVE MEMBER AND HAVING AN ARM AND A CONTROL LEG, A SECOND TENSION SPRING INTERCONNECTED BETWEEN SAID LEVER ARM AND SAID PAWL DRIVE ARM, THE CONTROL LEG OF THE LEVER PROJECTING RADIALLY OUTWARDLY OF SAID DRIVE MEMBER AND IN A POSITION NORMALLY IN FRONT OF SAID PAWL CONTROL ARM RELATIVE TO SAID DIRECTION OF ROTATION OF SAID DRIVE MEMBER, A TRIP ARM MOVABLE INTO AND OUT OF THE PATHS OF TRAVEL OF SAID PAWL CONTROL ARM AND SAID LEVER CONTROL LEG, SAID TRIP ARM WHEN MOVED INTO SAID PATHS FIRST ENGAGING SAID CONTROL LEG WHEREBY SAID LEVER IS PIVOTED AND SAID SECOND SPRING IS PLACED UNDER LOAD URGING SAID PAWL DRIVE ARM DOG TOWARD DISENGAGEMENT WITH SAID DRIVE MEMBER, SAID TRIP ARM THEN PIVOTING SAID PAWL TO DISENGAGE THE DRIVE ARM DOG FROM THE DRIVE MEMBER AND MOVE THE DRIVE ARM RADIALLY INWARDLY, SAID SECOND SPRING EXERTING A FORCE ON SAID PAWL DRIVE ARM SUFFICIENT TO HOLD THE DRIVE ARM OUT OF ENGAGEMENT WITH SAID DRIVE MEMBER UNTIL SAID TRIP ARM MOVES OUT OF ENGAGEMENT WITH SAID LEVER AND PAWL, WHEREUPON SAID FIRST TENSION SPRING IS FREE TO PIVOT THE PAWL AND MOVE SAID DRIVE ARM DOG INTO DRIVING ENGAGEMENT WITH SAID DRIVE MEMBER.