Automatic transfer device

Claim 1

AN ASSEMBLY LINE CONVEYOR COMPRISING A FIRST GUIDE RAIL MEANS, A TRUCK MEANS COMPRISING A BODY RECIPROCABLY MOVABLE ALONG SAID SIDE RAIL MEANS, MOVEMENT OF SAID TRUCK MEANS BEING EFFECTED BY A PAIR OF HYDRAULIC JACKS, SAID JACKS HAVING PLUNGER RODS OPERATIVELY CONNECTED TO SAID TRUCK MEANS, EACH ROD ALTERNATIVELY IMPARTING MOVEMENT TO SAID TRUCK MEANS IN ONLY ONE DIRECTION ALONG SAID RAIL MEANS, MOVEMENT IMPARTED BY ONE ROD BEING OPPOSITELY DIRECTED TO THAT IMPARTED BY THE OTHER, SAID TRUCK MEANS COMPRISING ROLLERS FOR RIDING ON SAID RAIL MEANS, SAID TRUCK MEANS COMPRISING A PAIR OF ELONGATED PARALLEL ARMS EACH PIVOTED AT ONE END TO THE BODY OF SAID TRUCK MEANS AND HAVING A GRIPPING DEVICE PIVOTALLY ATTACHED TO THE OTHER ENDS, ONE OF SAID ARMS HAVING A ROLLER BETWEEN ITS ENDS, SAID ROLLER RIDING ON A SECOND GUIDE RAIL MEANS WHICH COMPRISES UPPER AND LOWER TRACKS, A HYDRAULIC JACK LOCATED AT EACH END OF SAID SECOND RAIL MEANS AND COMPRISING A LUG PLUNGER ROD MOVABLE TRANSVERSELY OF THE LENGTH OF SAID SECOND RAIL MENS AND AN ELEVATOR LUG ON THE END OF THE ROD, EACH ELEVATOR LUG BEING ALIGNED TO FORM A CONTINUOUS SURFACE WITH SAID UPPER AND LOWER TRACKS RESPECTIVELY, OF SAID SECOND RAIL MEANS WHEN EACH LUG PLUNGER ROD IS AT THE UPPER OR LOWER LIMIT, RESPECTIVELY, OF ITS STROKE, SAID ROLLER ON SAID ARM RIDING ON THE UPPER AND LOWER TRACKS RESPECTIVELY, OF SAID SECOND RAIL MEANS DURING RESPECTIVE RECIPROCAL MOVEMENETS OF SAID TRUCK AND LEAVING SAID SECOND RAIL AND COMING TO REST ON RESPECTIVES ONE OF SAID ELEVATOR LUGS WHEN SAID TRUCK MEANS IS AT THE OPPOSITE LIMITS OF ITS RECIPROCAL MOVEMENTS, ALL THE AFOREMENTIONED HYDRAULIC JACKS BEING SYNCHRONOUSLY CORRELATED ONE WITH THE OTHER SO THAT WHEN SAID TRUCK MEANS REACHES ONE LIMIT OF ITS RECIPROCAL MOVEMENT A ONE OF SAID ELEVATOR LUGS IS IN POSITION TO RECEIVE SAID ARM ROLLER THEREON AS SAID ROLELR LEAVES EITHER THE UPPER OF LOWER TRACK OF SAID SECOND RAIL MEANS, SAID ONE ELEVATOR LUG THEN BEING MOVED BY ITS ASSOCIATED JACK TO A POSITION IN ALIGNMENT WITH THE OTHER TRUCK OF SAID SECOND RAIL, WHEREBY WHEN SAID TRUCK MEANS PERFORMS ITS RECIPROCAL MOVEMENT AWAY FROM SAID ONE LIMIT THE ARM ROLLER WILL RIDE ON SAID OTHER TRACK OF SAID SECOND RAIL.