the centers of the two eyes can be adjustable from 3 mm to 12 mm the filament drafting drum is an active filament unwinder with tension control each filament guide is adjustable and the distance between the centers of the two filament guides ranges 3 mm to 15 mm the apparatus for manufacturing a multi component yarn of the present invention is operated as follows installing two sets of fiber roving onto roving hangers 3 installing two sets of core filaments on filament drafting drums 4 and then start the machine the two sets of fibrous roving are fed into the back roller 23 through two eyes roving guide 5 for drafting drafted fibrous roving then exits back roller 23 and feed into middle roller 22 and front roller 21 for further drafting and exit through nip of front roller 21 adjusting the two filament guides 6 such that the first and second of core filaments are independently positioned on top of the first or second fiber roving as the first fibrous roving exits from the nip of the front roller the first fibrous will twist with the first core filament that is moving laterally at the same time so as to form the first yarn as the front roller rotates the first yarn meets the second yarn soon and twist together forming a multi component elastic yarn the positions of the two eyes of the two eyes roving guide are adjusted to ensure the two fibrous roving are fed.