Pallet handling machine

Claim 1

IN A MEANS FOR HANDLING BUILDING BLOCK PALLETS COMPRISING: A FIRST MACHINE DISPOSED TO TRANSFER BLOCK LADEN PALLET FROM A BUILDING BLOCK PRODUCING MACHINE TO A RACK HAVING A PLURALITY OF SUBSTANTIALLY HORIZONTAL VERTICALLY SPACED RACK SHELF PORTIONS; THE INVENTION COMPRISING PALLET CARRYING MEANS OF SAID FIRST MACHINE FOR CARRYING BLOCK LADEN PALLETS THEREON; VERTICALLY MOVABLE MEANS FOR MOVING SAID PALLET CARRYING MEANS UP AND DOWN; HORIZONTALLY RECIPROCATING MEANS FOR RECIPROCATING SAID PALLET CARRYING MEANS HORIZONTALLY; PALLET ENGAGING MEANS CONNECTED TO SAID PALLET CARRYING MEANS AND ENGAGEABLE WITH AN UNLADEN PALLET SUPPORTED ON SAID RACK; FIFTH MEANS OF SAID FIRST MACHINE RESPONSIVE TO THE ENGAGEMENT OF SAID PALLET ENGAGING MEANS WITH SAID UNLADEN PALLET TO ESTABLISH A VERTICAL LEVEL AT WHICH SAID VERTICALLY MOVABLE MEANS WILL STOP FOR DELIVERLY OF THE NEXT LADEN PALLET SO THAT THE HORIZONTALLY RECIPROCATING MEANS MAY PLACE SAID NEXT LADEN PALLET AT THE CORRECT VERTICALLY SPACED RACK SHELF WHICH WAS PREVIOUSLY OCCUPIED BY SAID UNLADEN PALLET; FIRST SWITCH MEANS DISPOSED TO STOP SAID VERTICALLY MOVABLE MEANS AT A LEVEL CORRESPONDING TO A LADEN PALLET DELIVERY LEVEL OF A CONCRETE BLOCK MACHINE; SOME OF SAID RACK SHELF PORTIONS DISPOSED ABOVE SAID LEVEL AND SOME OF SAID RACK SHELF PORTINS DISPOSED BELOW SAID LEVEL; SECOND SWITCH MEANS OPERABLE BY AND IN RESPONSE TO A VERTICAL MOVEMENT OF SAID VERTICALLY MOVABLE MEANS AND DISPOSED TO CONTROL SUBSEQUENT UPWARD AND DOWNWARD MOVEMENT OF SAID VERTICALLY MOVABLE MEANS ABOVE AND BELOW SAID DELIVERY LEVEL WHEREBY SAID RACK SHELF PORTIONS ABOVE AND BELOW SAID LEVEL MAY BE RESPECTIVELY APPROACHED BY SAID PALLET HANDLING MEANS; SAID SECOND SWITCH MEANS COMPRISING SWITCH MECHANISMS VERTICALLY DISPOSED IN SPACED RELATIONSHIP TO EACH OTHER AND STATIONARY RELATIVE TO SAID VERTICALLY MOVABLE MEANS; FURTHER MEANS CARRIED BY SAID VERTICALLY MOVABLE MEANS DISPOSED TO TRIP SAID SWITCH MANS AT PREDETERMINED LEVELS WITH RESPECT TO THE DELIVERY LEVEL OF SAID BUILDING BLOCK PRODUCING MACHINE WHEREBY SAID PALLET CARRYING MEANS WILL BE ENERGIZED IN A DOWNWARD DIRECTION WHEN RETURNING FROM UPPERMOST PALLET RACK SHELVES TOWARD SAID DELIVERLY LEVEL OF SAID PRODUCING MACHINE AND WHEREBY SAID PALLET CARRYING MEANS WHEN OPERATING BELOW SAID DELIVERY LEVEL WILL BE ENERGIZED UPWARDLY WHEN RETURNING FROM PALLET RACK SHELVES DISPOSED BELOW SAID DELIVERY LEVEL AS THE PALLET CARRYING MANS RETURNS FROM SUCH LOWER SHELVES TO THE LEVEL OF THE BUILDING BLOCK PRODUCING MACHINE.