Single-cylinder machine with one feed with needles in the dial, for the production of high-quality socks in true rib, five-color patterns, knit or laid in elastic and sculptured terry (on request). Heel and toe with reciprocating movement, with variable and three-dimensional effects obtainable without the aid of pickers. The knitting head of the machine is equipped with cams and a Santoni patent special chain system which allows preselected needles to be driven to the stitch cam for knitting. On request:Automatic toe-closing by Lonati SbyS device, which uses the technique of “true linking “, whose advantages are well known. The socks are of superior quality in terms of finishing, comfort, durability, compared to that produced with traditional methods.