turning to fig1 there is shown a sliver coiler , generally designated at sc , including a coiler can 4 . the sliver 3 is advanced by cooperating pressure rollers 1 and 2 associated with a fiber processing machine , not shown in detail . such machine may be a card or a drawing frame for short or long - stapled fiber material and the sliver coiler serves such a machine by depositing the produced sliver into the underlying coiler can . the stationary pressure rollers 1 and 2 rotating about a horizontal axis advance the sliver 3 with a high speed of up to 1000 m / min , for example , over 300 m / min , at which speed the sliver 3 is to be deposited in well - defined coils in the coiler can 4 which rotates during the coiling operation . a rotary head 5 ( rotary plate ) forming part of the coiling mechanism proper is supported by means of roller bearings in a carrier 7 for rotation about a vertical axis . the carrier 7 is stationarily held by securing devices attaching it to the machine frame . in the rotary head 5 there is arranged a rotary sliver guide tube 10 , upstream of which there is arranged a guide block 11 oriented coaxially with the rotary axis of the rotary head 5 and functioning as an inlet opening for the sliver guide tube 10 . the latter extends obliquely downwardly and terminates in an outlet opening 12 provided in the base 5a of the rotary head 5 , in the vicinity of the base periphery . the sliver guide tube 10 has a curved configuration . upstream of the pressure rollers 1 and 2 there is provided a stationary sliver trumpet 13 . the machine frame for the sliver coiler comprises an elongated base plate 14 and a head plate 15 . these two horizontally extending plate components 14 and 15 are in a vertically superposed , spaced relationship . the underside of the base 5a of the rotary head 5 is essentially coplanar with the underside 9 of the head plate 15 . during normal operation of the sliver coiler the pressure rollers ( feed rollers ) 1 , 2 and the coiler head 5 are rotated , so that the sliver 3 is fed into the rotating sliver guide tube 10 and is discharged downwardly in coils as the sliver guide tube outlet 12 orbits about the axis of the rotary head 5 . the sliver coils are deposited in offset , overlapping layers as the can 4 rotates . for this purpose , the base plate 14 has a rotary base platform 16 which supports the can 4 and which is rotated when the sliver 3 is deposited in the can 4 as it is being discharged by the outlet opening 12 of the sliver conduit 10 . after the can 4 is full , the fiber material projects upwardly beyond the top edge of the can 4 , whereby the deposited fiber material , by virtue of the inherent elasticity of the sliver 3 and / or by virtue of an upwardly urged can base ( not shown ) is pressed against the undersides of the head plate 15 and the rotary head base 5a . the sliver 3 is introduced into the stationary sliver trumpet 13 which is situated in a roof 21 of a hood 20 which , in turn , extends over a region of the sliver coiler . in the roof 21 two air inlet openings 22 and 23 are provided which are situated in the vicinity of the sliver trumpet 13 . the arrows a and b indicate the direction of air flow into the inner space of the hood 20 through the air inlet openings 22 , 23 . further , the side wall 20a of the hood 20 has a suction outlet 24a coupled to an only symbolically shown suction device 24 . the arrow c indicates the dust - laden air stream flowing from the inner space of the hood 20 into the suction device 24 . in fig2 above the sliver trumpet 13 and the air inlet opening 22 there is provided a common closure 25 which is slightly curved for aerodynamic reasons and which is open on one side in the direction of the incoming sliver 3 . at its other side , the closure 25 merges into the roof 21 of the hood 20 . downstream of the sliver trumpet 13 there is arranged the pressure roller pair 1 , 2 and the sliver guide tube 10 which rotates in the direction of the arrow d . between the pressure roller pair 1 , 2 and the sliver guide tube 10 there is provided a floor 26 of the hood 20 . upstream of the sliver trumpet 13 there are provided a stationary trough 27 and a rotary roller 28 which constitute supports for the sliver 3 as it runs in a generally horizontal orientation . turning now to fig3 in the roof 21 of the hood 20 two additional air inlet openings 29 , 30 are provided which are arranged at a distance from the air inlet opening 22 and are smaller than the latter . arrows e and f indicate the direction of air flow through the openings 29 , 30 . the floor 26 has a silver passage 31 which has a smaller passage area than that of the inlet opening 32 in the sliver guide tube 10 , as particularly well illustrated in fig4 . the sliver 3 is , as it passes through the opening 31 , slightly compressed so that air escapes from the sliver 3 as illustrated by arrows g and h . these air streams flow backwardly into the inner space of the hood 20 and are removed therefrom by the suction device 24 as illustrated in fig3 . the sliver slightly widens in the sliver guide tube 10 . within the hood 20 which is formed by roof 21 , the floor 26 and the side walls 20a and 20b as well as a frontal and rear wall ( neither shown ), the pressure roller pair 1 , 2 is exposed to suction . also , upon exit of the sliver 3 from the sliver trumpet 13 , the released dust is removed by the suction device 24 . it will be understood that the above description of the present invention is susceptible to various modifications , changes and adaptations , and the same are intended to be comprehended within the meaning and range of equivalents of the appended claims .