Improved apparatus for tensioning tubular knitted products produced on circular knitting machines and similar, and then for turning them inside out

The tubular sheath 2007 which is developed inside and under the needle cylinder 2001 extends with a curved form 2007A, 2007B to the outside of the machine, and in the curved part of the rod 2030 there is a flexible extension 2032 terminating in the shaped expansion 2034 which is for cooperating with the internal pipe 2012; means are envisaged for sustaining said expansion during the reversal stage and means for centring it and manoeuvring it in the pneumatic tensioning attitude. (Fig. 1)