Patent ID: 8429889

Claim:
An apparatus for producing a yarn, the apparatus comprising: a reciprocating twisting stage adapted for simultaneously twisting one or more slivers to produce one or more twisted strands, the reciprocating twisting stage comprising one or more twist rollers adapted to rotate along an axis of rotation and to move reciprocally along the axis of rotation of the one or more twist rollers; one or more take up holders onto which the yarn can be wound; and a control system for controlling the rotational speed of the one or more take up holders, the control system being arranged to control the one or more take up holders such that the linear speed at which yarn is wound onto the one or more take up holders is lower than the linear speed at which the one or more strands exit the one or more twist rollers, such that the yarn is subject to low tension after exiting the reciprocating twisting stage in order to control the yarn structure.