Nelson press unloader

Claim 1

PRESS UNLOADING APPARATUS COMPRISING IN COMBINATION, A LOWER PRESS PART AND DIE, AN UPPER PRESS PART WITH A VERTICALLY MOVABLE HEAD HAVING A DIE AND EJECTOR MEANS FOR HOLDING A FORMED WORKPIECE ON ITS UPSTROKE AND EJECTING IT NEAR THE END OF THE UPSTROKE, AN UNLOADER TRAY MOUNTED FOR MOVEMENT INTO AND OUT OF WORKPIECE-RECEIVING POSITION BETWEEN THE DIES, AND OPERATING LINKAGE MECHANISM ARRANGED BETWEEN SAID HEAD AND SAID TRAY FOR MOVING THE TRAY UNDER THE DIE WHEN THE HEAD IS IN ITS UPPER POSITION AND WITHDRAWING THE TRAY WHEN THE HEAD MOVES DOWNWARD, SAID LINKAGE MECHANISM COMPRISING A FIRST CONNECTING LINK PIVOTALLY CONNECTED TO SAID HEAD AT ITS UPPER END, A FIRST SWINGING ARM MOUNTED TO TURN ABOUT A FIRST FIXED PIVOT AXIS AND PIVOTALLY CONNECTED AT ITS OUTER END TO SAID FIRST LINK, A SECOND SWINGING ARM MOUNTED TO TURN ABOUT SAID FIRST FIXED PIVOT AXIS WITH SAID FIRST SWINGING ARM, A SECOND CONNECTING LINK PIVOTALLY CONNECTED TO SAID SECOND SWINGING ARM AT ONE END, A THIRD SWINGING ARM MOUNTED TO TURN ABOUT A SECOND FIXED PIVOT AXIS SPACED HORIZONTALLY FROM SAID FIRST FIXED AXIS AND PIVOTALLY CONNECTED AT ITS OUTER END TO SAID SECOND CONNECTING LINK, A FOURTH SWINGING ARM MOUNTED TO TURN ABOUT SAID SECOND PIVOT AXIS WITH SAID THIRD SWINGING ARM, AND A FIFTH SWINGING ARM PIVOTALLY MOUNTED ON A AXIS ON SAID TRAY AND PIVOTALLY CONNECTED AT ITS OUTER END OF THE OUTER END OF SAID FOURTH SWINGING ARM.