the staple fibers prior to passing through front rolls 7 and out at nip 8 which is the immediate exit of front rolls 7 to achieve properly formed staple core yarn 20 nip 8 is critical to the process because it is at this point which twist of staple core yarn 20 begins the twisting process begins at nip 8 of front rolls 7 and is typical for ring spinning processes staple core yarn 20 is essentially complete as it enters thread guide 13 where it balloons out and passes through balloon zone 14 through revolving traveler 10 which travels on ring 9 thus forming spinning means 24 the yarn is then spunt onto a bobbin not shown simultaneously during the above described process for making staple core yarn 20 filament or multi filament 15 is fed from a filament wound on a pirn or packaged mounted on a stationary or revolving spindle attached to the frame not shown filament 15 is fed through trumpet 16 which is mounted on traversing bar 3 and bypasses rolls 4 5 and aprons 6 and enters between top filament feed roller 17a and lower filament feed roller 17b fig ii lower filament feed roller 17b is designed with a diameter larger than front rolls 7 to increase the filament feed velocity and thus control uniform overfeed of filament 15 relative to the feed of staple core yarn 20 in this embodiment of the invention lower roll 7b and lower filament feed roll 17 b rotate on the same shaft and axis 18 and consequently both rotate at the same revolutions per minute lower feed roll 17 b is optimally 10 larger in diameter than roll 7b in order to effect the correct rate of filament feed speed in relation.