Abstract: The separation of impurities through an opening in the casing of a rotating roller or drum is increased by guide grooves or guide gaps in the casing. The guide grooves or guide gaps extend in the direction of movement of the conveyed fibers and open out into the separating opening. The guide grooves may be formed directly in the casing in the surface facing the rotating roller or drum or may be formed by separate elements which are mounted on the casing and extend into the separating opening.

Abstract: Fibers delivered in a freely floating state in a fiber transport passage are to be laid in a predetermined disposition on a friction spinning element, such as a friction spinning drum or disc. For this purpose, an opening region of the fiber transport passage is provided with a converging portion in which the airstream is supplementarily accelerated relative to a preceding acceleration. This supplementary acceleration serves to assist in bringing the fibers into the predetermined disposition on the friction spinning drum. The friction spinning device comprises an opening roller which is rotatably supported in a housing. The housing is connected to the fiber transport passage. The opening of the fiber transport passage extends close to a cylindrical surface of the friction spinning drum. The fibers leaving the opening are transported on the friction spinning drum towards a yarn formation position where they are twisted into a yarn which is withdrawn in a selectable withdrawal direction by withdrawal rollers.

Abstract: The removal of flocks from the series of fiber bales is controlled by a control signal which is generated in response to a deviation from a predetermined ratio of the operating time intervals and the non-operating time intervals of the flock removal member. Flock material is continuously withdrawn from the storage receiver while delivery of flock is controlled by stop and start signals (a, e) which are produced in response to the receiver achieving maximum fill or minimum fill. A determination is made of the operating time interval between a start signal and a succeeding stop signal while a non-operating time period is determined between the stop signal and the next succeeding start signal in order to obtain the control signal.

Abstract: The circumferential wall of the godet drum is heated via air which is heated by a heating device within the chamber of the drum. Air circulation through a closed path is aided by means of fan blades which are mounted on an interior face of the drum.

Abstract: The can filling station is provided with can removal means for moving full cans away from a filling position. A sliver separator is also mounted on the can removal means to engage against the underside of the coiler guide wheel under a spring biased force. Simultaneously with the movement of the full can, the separator slides over the exit opening of the sliver channel in the guide wheel and thus separates or tears the fiber sliver which is stationary and located in the exit opening.