Apparatus for making pillow slips

Claim 1

IN AN APPARATUS FOR MAKING PILLOW SLIPS, A SUPPORT HAVING FIRST AND SECOND SUPPORTING SURFACES ARRANGED ENDTO-END, A CUTTER BAR DISPOSED BETWEEN THE ADJACENT ENDS OF THE SUPPORTING SURFACES, A FIRST CONVEYOR ASSOCIATED WITH THE FIRST SUPPORTING SURFACE FOR ADVANCING THE LEADING END OF TUBULAR MATERIAL THEREALONG TOWARD THE CUTTER BAR, A PICKER ASSOCIATED WITH THE SECOND SUPPORTING SURFACE, A CARRIAGE MOUNTING THE PICKER FOR MOVEMENT TOWARD AND FROM THE CUTTER BAR, SAID PICKER COMPRISING A BAR DISPOSED TRANSVERSELY OF THE CARRIAGE AND A PLURALITY OF TRANSVERSELY SPACED FINGERS PIVOTED THEREON, MEANS NORMALLY HOLDING THE FINGERS ENGAGED WITH THE BAR, AND A CAM OPERABLE TO LIFT THE FINGERS AWAY FROM THE BAR, MEANS FOR EFFECTING RECIPROCATION OF THE CARRIAGE, A CAM-ACTUATOR DISPOSED IN THE PATH OF MOVEMENT OF THE CARRIAGE, OPERABLE AS THE CARRIAGE MOVES TOWARD THE CUTTER BAR, TO INTERCEPT THE CAM AND HENCE TO RAISE THE FINGERS FROM THE BAR, MEANS FIXED TO THE CARRIAGE AND MOVABLE THEREWITH, OPERABLE TO EFFECT FORWARD MOVEMENT OF THE FIRST CONVEYOR AS THE OPEN FINGERS NEAR THE CUTTER BAR, TO ADVANCE THE LEADING END OF THE TUBULAR MATERIAL BETWEEN THE FINGERS AND THE BAR, SAID FINGERS CLOSING ON THE LEADING END AS THE CARRIAGE COMMENCES TO MOVE AWAY FROM THE CUTTER BAR, AND MEANS OPERABLE, AT THE FORWARD EXTREMITY OF THE MOVEMENT OF THE CARRIAGE, TO EFFECT OPERATION OF THE CUTTER.