In all knitting machines, the main element for the intermeshing of loops is 'the needle.' Earlier straight pins were used in hand-knitting to kink the yarn to form a circle and intermesh the new loop through the old one. When the machine was developed in 1589 by William Lee, a spring beard needle was used. Later on, in 1847, 'a latch needle' was created, and in the 20th century, 'a compound needle' was developed. However, the principle of knitting remained unaltered. The knitted fabric's quality depends mainly on the effectiveness and accuracy of the loop-forming element, such as a needle. Minor variations in needle manufacture can lead to the irregular fabric. The surface of it should be highly polished, allowing the yarn and the loop to slide freely. It should have high strength and toughness to give durability. It should also perform several million knitting actions without fault. There are mainly three types of needles used:
1-) The spring beards
2-) The latch
3-) The compound needle
A sock knitting needle must form a new loop, pull this loop through the previous loop formed, lose the old loop, and pull the new loop to the length specified for the product. Variations in this cycle allow fine-tuning of texture, appearance, and performance to meet product specifications.
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