Patent ID: 7661259

Claim:
A slubbing machine for manufacturing a roving yarn from a fiber assembly, said fiber assembly comprising a plurality of individual free fiber ends surrounding a core, said slubbing machine comprising: at least one spinning position, said spinning position comprising a twist application component comprising: a swirl chamber comprising a roving yarn formation element having an inlet aperture; at least one twist stop element within the twist application component; a fiber guide element with which the fiber assembly is delivered into the swirl chamber; and a fluid device and at least one nozzle hole to create a swirl air flow in said swirl chamber; wherein said fiber assembly is at least partially subjected to a true twist inside said swirl chamber such that said swirl air flow inside said swirl chamber causes said individual free fiber ends of said fiber assembly to lie around said inlet aperture of said roving yarn formation element and to be taken up by said rotating swirl flow to rotate around said core of said fiber assembly.