SPINNING FRAME
A ring spinning frame has at least one group of equidistant spinning stations (11), a doffing device (14) for simultaneous interchange of bobbins (15) filled with yarn and empty bobbins (16) at each spinning station (11) and an endless conveyor (17) which runs past the spinning stations (11) and is automatically returned from one end of the groups of spinning stations (12) to the other. Vertical bobbin spindles (13) are mounted on the endless conveyor (17) at a distance from the spinning stations (11) such that when the bobbins on the endless conveyor (17) are doffed each spinning station (11) is aligned exactly with the corresponding bobbin spindle (13). Each bobbin spindle (13) is arranged on its own spindle carriage (18). Each spindle carriage (18) can be engaged with a corresponding driver (19) which is mounted in a position on the endless conveyor (17) such that when the driver (19) is engaged with the corresponding spindle carriage (18), the bobbin spindle (13) of this spindle carriage (18) is aligned exactly with the corresponding spinning station (11) in the doffing position of the endless conveyor (17).