drawings a pair of output rollers 7 70 is installed at the output of a draw frame this pair of output rollers 7 70 conveys the fiber fleece into the fleece hopper 1 the fiber fleece is gathered together in the fleece hopper 1 and is conveyed on through the hopper inlet to the fiber sliver pipe 8 the fiber sliver is conveyed on into a fiber sliver hopper 9 at the output of the fiber sliver hopper 9 the fiber sliver is seized by a pair of calendar rollers 10 100 and is conveyed on to the depositing device of the draw frame the arrows in fig1 show the direction of transportation of the textile material fig2 shows the fleece hopper 1 as seen from the perspective of the entering fiber fleece the fleece hopper 1 is not perfectly round but is essentially rectangular in form the hopper is delimited by the hopper sides 2 20 200 in the center of its basic rectangular form a hopper bore 3 is provided in the fleece hopper 1 this hopper bore 3 is connected to a threaded bore 4 which is offset by 90 u00b0 this hopper bore 3 is necessary in order to be able to receive the insert 11 according to fig5 the possibility of receiving the insert 11 is an essential point of the invention it is not important for the invention whether the hopper bore 3.