Patent EA-002447-B1 (EA)
Title: Loop forming unit for a circular knitting machine
Inventor: KUDRYAVTSEVS LEONIDAS
IPC: D04B9/44
Filed: 1999-09-09
Abstract: 1. A loop forming unit used in a multi-system circular knitting machine, wherein said unit comprises a needle cylinder including an even number of loop forming systems, each of said loop forming systems comprising a clearing cam and a stitch cam, the both said cams forming a cam system, a thread guide and a needle position having its specific arrangement of heels, characterized in that the clearing cam of the first system is arranged above the stitch cam of the second system, and the stitch cam of the first system is arranged above the clearing cam of another system. 2. The unit in accordance with claim 1, characterized in that said unit comprises two cam systems, of which one system being located above the other with a displacement of half-length of extension of the first system. 3. The unit in accordance with either of claims 1 or 2, characterized in that the length of the needle-back periphery of the needle cylinder does not exceed two inches. 4. An operation process of a loop forming unit of a multi-system knitting machine, including performing a full cycle of the loop forming by the needles of the first loop forming system, with its specific arrangement of heels, within the area of extension of the first cam system, characterized in that, within the area of extension of the first cam system, a full cycle of the loop forming is simultaneously performed by the needles of another loop forming system having a different arrangement of heels. 5. The process in accordance with claim 4, characterized in that, within the area of extension of the first cam system, a needle of the first loop forming system is moved from the highest clearing point to the lowest formation and hold-down point, whereas the adjacent, located within the needle cylinder, needle of another loop forming system is simultaneously moved from the lowest formation and hold-down point to the highest clearing point, and subsequently the same needle of the first loop forming system is moved from the lowest forming and hold-down point to the highest clearing point, and the adjacent, located within the needle cylinder, needle of the other loop forming system is simultaneously moved from the highest clearing point to the lowest forming and hold-down point. 6. A knitted cord formed by a cross-miss structure interweaving or a combined interweaving based on the cross-miss structure, characterized in that the thread lengths between the loops fill in the inner structure of the knitted cord and are used as a reinforcement. 7. The cord in accordance with claim 6, characterized in that said cord consists of two knitted double chains hold together with a coil formed by the thread lengths of each row of each chain. 8. The cord in accordance with claim 6, characterized in that said cord consists of two completely closed rows of a stitch structure hold together with a coil formed by one of the thread lengths of each row. 9. The cord in accordance with claim 6, characterized in that said cord consists of two warp-knitting double chains hold together with an interweaving of the thread lengths between the loops of each double warp-knitting chain.