Machine for filling a sack with piece goods and closing mouth opening of the sack

A machine for filing a sack of flexible material such as plastics and for closing the mouth opening of the sack to form a carrying handle comprising sorting means for stacking piece-goods into a predetermined shape;

• closing means for folding and seaming the mouth opening of said sack when filled, said sorting means and said closing means being arranged after each other for operating in predetermined sequence, revolving means between said sorting means and closing means and having filling racks and being displaceable in a transverse plane with respect to said line between a ready-for-operation position, in which said filing rack is positioned outside said line to receive an empty sack, and a sacking position, in which said filling rack is positioned on said line to push goods into the sack and to push the filled sack to said closing means;
• said closing means comprising two spreading devices positioned on different sides of the mouth opening of the sack, said devices having fingers adapted to grip the mouth opening of the sack and to stretch said mouth opening to form a narrow opening, so that the free side walls of said sack mouth opening are at least positioned substantially opposite each other to form a double edging, a supporting plate to be positioned against the mouth opening of the sack to turn said double edging to a closing plane, two swing flaps positioned close to said spreading devices to turn angle folds formed by said fingers upon said supporting plate, and welding means for welding together said folded angle folds.