Abstract: A roving frame and spinning machine system in which each roving frame is coupled with a plurality of spinning machines via a respective suspension track system having a respective transporter for transferring bobbins from the roving frame to the spinning machine and empty sleeves from the spinning machines to the roving frame. Branch and switch tracks are provided between the track systems and the transporters for gaps between their leading and trailing ends and couplings enabling a segment of one transporter to be decoupled therefrom and coupled to the end of another transporter when, in conjunction with the operation of the switch tracks, one of the ring spinning machines is transferred from one group to the other group.