Abstract: A discharge device for discharging the waste from a fiber cleaning machine having a collecting basin and a blowing or sucking device. The discharge device has a collecting basin which is funnel shaped with a motor driven paddle wheel in the tapered part. The waste removal is controlled on the basis of weight indicating and/or filling level indicating sensors which are assigned to the collecting basin.

Abstract: A method and an apparatus for operating a bale opening machine having an opening member, wherein the height profile of a row of bales is determined by at least one sensor directed towards the bale surface and is used to control the position of the opening member during the subsequent bale opening. The received signal of the sensor, which is preferably an optical or acoustical sensor or a sensor which operates with radar waves, is processed to obtain a signal corresponding to the hardness of the bales. In addition, the in-feed and, optionally, the penetration of the opening member, is controlled or regulated in accordance with the hardness signal. Various slip-free length measuring devices serves to determine the longitudinal position of the opening member along the row of bales.

Abstract: An apparatus for carrying out a block-change in a ring spinning machine, in which a block of roving bobbins which each supply an associated spinning station are changed together when the rovings wound on the bobbins run out. Preferably, more than one block of roving bobbins is provided. The roving bobbins used to form a block are combined in such a manner that all of them have at least substantially the same length of roving wound on them. The end of the roving on at least one of the bobbins of the block is detected before that end passes through the associated drafting unit, and the block-change is triggered at an instant of time when the roving end has not yet passed through the drafting unit.

Abstract: A method for the discharge of the waste from a fiber cleaning machine with the retention of the operating pressure difference to the surroundings of the machine. The waste inside the machine is collected to a predetermined filling level and after this filling level has beeen reached only a predetermined part of the waste is removed so that the part of the waste which is not removed can be effective as a sluice layer.A discharge device for discharging the waste from a fiber cleaning machine having a collecting basin and a blowing or sucking device. The discharge device has a collecting basin which is funnel shaped with a motor driven paddle wheel in the tapered part. The waste removal is controlled on the basis of weight indicating and/or filling level indicating sensors which are assigned to the collecting basin.