skeletal and is typically covered by a wire mesh not shown for safety the superstructure 12 projects upwardly from atop the frusto conical portion 14 39 of the lower frame 14 the superstructure 12 is likewise formed from various steel support members and includes a primary support ring 15 disposed intermediate the superstructure 12 and the lower frame structure 14 an annular needle cylinder 16 is disposed within the support ring 15 for driven rotation therein a plurality of latch type needles 17 are disposed within the needle cylinder 16 and are driven into operation by the rotating needle cylinder 17 a plurality of individual yarn strands 18 are fed from a yarn supply not shown into a threading alignment arrangement which presents the thread to the needles 17 for knitting in order to maintain dust control within the machine a plurality of fans 26 are disposed in a spaced oppositely directed relationship along fan mounting arms 28 which are in turn attached to a central shaft 32 extending downwardly from the uppermost portion of the machine down into a fabric receiving cavity within the lower frame 14 the fans 26 are propelled around the yarn feeding area for cleaning purposes as seen in fig1 fabric f is formed as a knitted tube and is wound on a rotating mandrel 22 which is supported within a mandrel frame 20 that is formed as a generally rectangular open skeletal frame structure nip rollers 24 are provided to close the fabric prior to take.