Split Plotting and Randomization in Industrial Experiments

Apparatus for inserting bunches of weft threads into a weft thread storage device in a warp knitting machine includes means for making the weft threads ready, and a weft thread drawing-off device including a suction nozzle displaceable over the width of a fabric web being warp knitted by the machine, and means for actuating the suction nozzle to align the ends of the weft threads made ready by the readying means and to seize the weft thread ends as well as draw off the seized weft threads and insert them into the weft thread storage device.