Abstract: An improved textile spool having a removable plug element inserted at the one or both ends of the hollow tube of the spool, the plug element having a tongue element therein extending axially and inwardly when the plug is engaged within the end of the spool, the tongue element having a raised projection on its outward external surface, and the hollow tube having a circular passageway therein, whereby, in the assembled condition, the projection fits in an interlocking relationship within the passageway, and whereby the plug element may be easily removed by an axial outward force when the tongue element is moved out of an interlocking relationship.

Abstract: A process and system for the segregation and separation of mixed office-paper-waste material which comprises: shredding the waste material to a uniform size; forming a fluidized bed of the shredded waste material in a vertical column by an upwardly flowing, high-volume, low-pressure air stream, to divide the material into distinct layers in the column; and separating and removing the layers from the column with lateral airflow.

Abstract: An improved textile spool comprising a hollow tube adapted to carry a filament thereon, the tube having a hole in the wall of one end thereof, and a flange and a plug assembly for insertion into the end of the tube, the plug having a spring-biased ball therein biased axially outwardly and adapted to fit in a locking relationship into the hole of the tube and to be displaced easily from the hole by inward movement of the biased ball to remove the plug.