SEED AND ORDER FOR AIRPORT OF A PULVER, EXAMPLE OF MILK POULTRY, FILLED IN A CONTAINER, EXAMPLE A SECK

摘要

A filter has one side located in the receptacle during filling thereof with powder. A suction source is connected to the other side of the filter, and means are provided for maintaining said one side of the filter in contact with the upper surface of the powder in the receptacle through said filling thereof, whereby air is sucked from the powder filling the receptacle while preventing powder from being sucked into the suction source.