Spindle beam and drive move - all other components remain stationary.

The central low-pressure channel is fitted between the working elements of the frame.

+  Lift and yarn tension are constant at any time during build-up of the cop

+ Ring frames > 2'000 spindles are possible

+ No additional drive for the bottom rollers is needed at half-length of the frame

+ Both sides of the frame operate independently - like two seperate frames

+ The central low-pressure channel is suitable for both broken ends and compacting