Device for feeding thread to needles of a knitting machine

A knitting machine for knitwear or hosiery, comprising a needle-bearing organ exhibiting a plurality of flanked grooves extending substantially vertically, each groove movably housing a needle (N) mobile on command in the respective groove for the formation of fabric, and comprising a device (1) for feeding thread to the needles, the device comprising:

• a body (2) of the device configured to be mounted to a knitting machine, at a needle-bearing organ of the knitting machine,
• thread guide members (4), movably housed at least partially in said body (2), wherein the thread guide members comprise:
• a first lever (5) rotatably mounted to said body (2) of the device so as to be able to rotate about a first rotation axis (X);
• a thread guide (6) rotatably mounted to said first lever (5) so as to be able to rotate, with respect to said first lever, about a second rotation axis (Y), said thread guide (6) having an elongate shape and extending longitudinally between a rear end (7) and a front end (8), the front end (8) projecting and emerging from said body (2) in a direction of said needle-bearing organ and defining at least a passage (61) for a thread to be dispensed to the needles (N) of said needle-bearing organ, said thread guide being provided with a guide portion (9) interposed between the rear end (7) and the front end (8);
• a second lever (10) rotatably mounted to said body (2) of the device so as to be able to rotate about a third rotation axis (Z), the second lever longitudinally extending between an activating end (11) and a guide end (12), said guide portion (9) of the thread guide (6) being configured to stay slidably in contact with said guide end of the second lever;
• activating members (13) positioned at least partially in said body (2) and configured and predisposed for controlledly moving at least said first lever (5) and said second lever (10) so as to position the thread guide (6) in a plurality of operating positions with respect to the body and with respect to the needle-bearing organ of the knitting machine,
• wherein the thread guide members (4) are characterised in that the first lever (5), the second lever (10) and the thread guide (6) together realise a four-bar linked kinematic structure configured so as to selectively position the front end (8) of the thread guide (6) in the plurality of operating positions, and wherein the four-bar linked kinematic structure is kinematically defined by the first rotation axis (X), the second rotation axis (Y), a direct contact point between the guide portion (9) of the thread guide (6) and the guide end (12) of the second lever (10), and the third rotation axis (Z),
• the needle-bearing organ being mobile with respect to the device for feeding thread along a motion trajectory.