Vertical level locator for a pallet handling machine

Claim 1

IN A MEANS FOR HANDLING BUILDING BLOCK PALLETS COMPRISING: A FIRST MACHINE DISPOSED TO TRANSFER BLOCK LADEN PALLETS FROM A BUILDING BLOCK PRODUCING MACHINE TO A RACK HAVING A PLURALITY OF SUBSTANTIALLY HORIZONTAL VERTICALLY SPACED RACK SHELF PORIONS, 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 DELIVERY OF THE NEXT LADEN PALLET SO THAT SAID HORIZONTALLY RECIPROCATING MEANS MAY PLACE SAID NEXT LADEN PALLET AT THE CORRECT VERTICALLY SPACED RACK SHELF WHICH WAS PREVIOUSLY OCCUPIED BY SAID UNLADEN PALLET, SAID FIFTH MEANS COMPRISING A VERTICALLY MOVABLE LOCATING MEANS MOVABLE IN CORRESPONDENCE WITH SAID VERTICALLY SPACED RACK SHELF PORTIONS; FIRST POWER OPERATED MEANS DISPOSED TO MOVE SAID LOCATOR MEANS; SECOND POWER OPERATED MEANS OPERABLE IN RESPONSE TO ENGAGEMENT OF SAID PALLET ENGAGING MEANS WITH AN UNLADEN PALLET, SAID SECOND POWER OPERATED MEANS WHEN THUS OPERATED DISPOSED TO STOP MOVEMENT OF SAID LOCATOR MEANS IN A POSITION CORRESPONDING TO A POSITION OF SAID UNLADEN PALLET.