B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
B65G57/00—Stacking of articles
B65G57/30—Stacking of articles by adding to the bottom of the stack
B65G57/301—Stacking of articles by adding to the bottom of the stack by means of reciprocatory or oscillatory lifting and holding or gripping devices
B65G57/303—Stacking of articles by adding to the bottom of the stack by means of reciprocatory or oscillatory lifting and holding or gripping devices the stack being lowered by mobile grippers or holders onto added articles