Sheet feeding or discharging mechanisms

Claim 1

A SHEET FEEDING MECHANISM FOR MAGNETIZABLE SHEETS, SUCH AS IRON AND MILD STEEL SHEETS, SAID FEEDING MECHANISM COMPRISING IN COMBINATION, A VERTICALLY ADJUSTABLE TABLE FOR SUPPORTING THE STACKED SHEETS, AND MOVABLE UPWARDLY AS EACH TOPMOST SHEET IS REMOVED THEREFROM; MAGNETIC MEANS POSITIONED ALONGSIDE THE STACKED SHEETS AND EFFECTIVE TO ESTABLISH MAGNETIC FIELDS REPELLING THE TOPMOST SHEET FROM THE NEXT UNDERLYING SHEET; HORIZONTAL ARMS PIVOTAL ABOUT VERTICAL AXES ADJACENT THE SIDE EDGES OF SAID TABLE, FOR MOVEMENT BETWEEN A RETRACTED POSITION RELATIVE TO THE STACKED SHEETS AND A SUPPORT POSITION EXTENDING OVER THE STACKED SHEETS AND A SUPPORT POSITION AT A COMMON LEVEL ABOVE THE UPPERMOST SHEET ON THE STACK; MEANS INTERCONNECTING ALL OF SAID ARMS FOR MOVEMENT IN UNISON, IN A COMMON HORIZONTAL PLANE, BETWEEN THE RETRACTED POSITION AND THE SUPPORT POSITION; AN OPERATING MEANS FOR SAID ARMS; A SERIES OF ELECTROMAGNETS ABOVE THE STACKED SHEETS; ACTUATOR MEANS OPERABLE TO MOVE SAID ELECTROMAGNETS INTO MAGNETIC GRIPPING RELATION WITH THE TOPMOST SHEET AND THEN TO LIFT SAID ELECTROMAGNETS TO RAISE THE TOPMOST SHEET TO A HOLDING LEVEL ABOVE SAID HORIZONTAL ARMS; MEANS OPERABLE BY A THUS RAISED SHEET, AS IT REACHES SAID HOLDING LEVEL, TO ACTUATE SAID OPERATING MEANS TO THE RAISED SHEET; GRIPPING MEANS MOVABLE INWARDLY TO ENGAGE A SHEET AT THE HOLDING LEVEL TO GRIP AND WITHDRAW SUCH SHEET LATERALLY RELATIVE TO SAID TABLE; MEANS OPERABLE, RESPONSIVE TO MOVEMENT OF SAID ARMS TO THE SUPPORT POSITION, SO TO MOVE SAID GRIPPING MEANS INWARDLY; AND MEANS OPERABLE, RESPONSIVE TO SUCH INWARD MOVEMENT OF SAID GRIPPING MEANS, TO DE-ENERGIZE SAID ELECTROMAGNETS TO RELEASE THE RAISED SHEET ONTO SAID SUPPORT ARMS.