Rack unloader and pallet stripping machine

Claim 1

IN A RACK UNLOADER AND CONCRETE BLOCK PALLET STRIPPER THE COMBINATION OF: FIRST AND SECOND HORIZONTALLY SPACED UPSTANDING FRAME PORTIONS DISPOSED TO RECEIVE A CONCRETE BLOCK PALLET RACK THEREBETWEEN, SAID RACK HAVING VERTICALLY SUPERIMPOSED SPACED PALLET SHELVES DISPOSED TO SUPPORT SUBSTANTIALLY HORIZONTALLY DISPOSED CONCRETE BLOCK LADEN PALLETS; A FIRST CARRIAGE VERTICALLY MOVABLE ON SAID FIRST UPSTANDING PORTION OF SAID FRAME; A SECOND CARRIAGE VERTICALLY MOVABLE ON SAID SECOND UPSTANDING PORTION OF SAID FRAME; MEANS FOR DRIVING SAID FIRST AND SECOND CARRIAGES IN UNISON AND UPON A COMMON LEVEL WITH EACH OTHER UP AND DOWN, SAID FIRST AND SECOND UPSTANDING FRAME PORTIONS, RESPECTIVELY; MEANS FOR SUPPORTING SAID PALLET RACK BETWEEN SAID FIRST AND SECOND CARRIAGES; A CONVEYOR HAVING ONE END PIVOTALLY SUPPORTED ON SAID SECOND CARRIAGE AND DISPOSED TO RECEIVE BLOCKS SLIDABLY MOVED HORIZONTALLY FROM SAID PALLETS; A POWER DRIVEN PUSHER MOUNTED ON SAID FIRST CARRIAGE AND MOVABLY EXTENDABLE AND RETRACTABLE BEYOND AN END OF SAID FRIST CARRIAGE TOWARD SAID SECOND CARRIAGE FOR PUSHING BLOCKS OFF FROM SAID PALLETS AND TOWARD SAID CONVEYOR; SAID PUSHER WHEN SLIDABLY PUSHING BLOCKS OFF FROM SAID PALLERS TENDING TO SLIDE SAID PALLETS OUT OF THE SHELVES IN SAID RACK IN A DIRECTION TOWARD SAID SECOND CARRIAGE; PALLET RETRACTION MEANS PIVOTED ON SAID PUSHER ON A HORIZONTAL AXIS; DOWNWARDLY DIRECTED PALLET EDGE ENGAGE MEANS OF SAID PALLET RETRACTION MEANS AT AN END OF SAID PUSHER DIRECTED TOWARD SAID SEOND CARRIAGE; AND SECOND CAM MEANS ON SAID PALLET RETRACTION MEANS; ENGAGEMENT OF SAID FIRST AND SECOND CAM MEANS CAUSED BY MOVEMENT OF SAID PUSHER ON SAID FIRST CARRIAGE DISPOSED TO CAUSE PIVOTAL MOVEMENT OF SAID PALLET RETRACTION MEANS ABOUT A HORIZONTAL AXIS AND DOWNWARDLY AT SAID PALLET EDGE ENGAGING MEANS WHEN SAID PUSHER PROJECTS BLOCKS FRON ONE OF SAID PALLETS TOWARD SAID CONVEYOR, WHEREBY AN EDGE OF THE RESPECTIVE PALLET IS ENGAGED BY SAID DOWNWARDLY DIRECTED PALLET EDGE ENGAGING MEANS WHEREUPON RETRACTION OF SAID PUSHER CAUSES THE PALLET TO BE PULLED BACK INTO POSITION IN A RESPECYIVE SHELF ON A SUPPORTING RACK; SAID FIRST AND SECOND CAM MEANS BEING DISPOSED TO PERMIT PIVOTAL MOVEMENT OF SAID PALLET RETRACTION MEANS UPWARDLY TO MOVE SAID PALLET EDGE ENGAGING MEANS OUT OF ENGAGEMENT WITH AN EDHE OF SAID PALLET WHEN SAID PUSHER IS RETRACTED RELATIVE TO SAID FIRST CARRIAGE TO A POSITION CORRESPONDING WITH A PROPER POSITION OF A PALLET RELATIVE TO A SHELF IN SAID RACK.