Can be used on any ring-frame of 3 or 4 rolls. The complete system consist of 2 parts
(a) A mechanical unit (Gear Box Device) with Clutch & Brake combination.
(b) An electronic control unit which imparts electric impulses to the Clutch and Brake unit.
The COLOURED Roving is fed from the back-roll and the GROUND YARN is spun with roving fed to the middle roll directly.