Apparatus for spinning special yarns

Claim 1

FLUIDIZED BED SPINNING APPARATUS COMPRISING, (A) ELONGATED VESSEL MEANS DEFINING AN AXIAL CHAMBER EXTENDING THERETHROUGH AND OPENING OUTWARDLY THEREFROM AT OPPOSITE ENDS THEREOF, SAID ACIAL CHAMBER INCREASING IN CROSS-SECTION FROM ONE END TO THE OPPOSITE END THEREOF, (B) SPINNERET MEANS FOR EXTRUDING FRESHLY SPUN FILAMENTS IN OPEN BUNDLE FORMATION INTO SAID OPEN OPPOSITE END OF SAID AXIAL CHAMBER, (C) MEANS FOR ESTABLISHING AN AIRSTREAM FLOWING FROM SAID ONE END OF SAID AXIAL CHAMBER TO SAID OPPOSITE END THEREOF COUNTER TO THE DIRECTION OF PASSAGE OF THE FILAMENTS THERETHROUGH AND AT A PROGRESSIVELY DECREASING VELOCITY, AND (D) MEANS FOR INTRODUCING FINE PARTICLES INTO SAID ONE END OF SAID AXIAL CHAMBER, THE PARTICLES BEING ENTRAINED IN THE AIRSTREAM AND BUOYED NEAR SAID OPPOSITE END OF SAID AXIAL CHAMBER WHERE THE PARTICLES BECOME SUSPENDED IN A STABLE FLUIDIZED PARTICLE BED.