Abstract: In a device for opening fiber bales with a plucking device capable of travelling on rails alongside a row of bales and of being lowered upon the bales, as well as with a suction channel, suction nozzles (72, 73, 82, 83) which suck away fiber material having fallen into the travel path of the plucking devices are connected.

Abstract: For a device for opening fiber bales, with an opening device capable of traveling on traveling rails along fiber bales set up in rows. A supporting wall is provided which is capable of being shifted in the direction of bale set-up. Orderly setting up of the fiber bales is ensured in a simple manner by means of the supporting wall.

Abstract: The device for the opening and mixing of fiber bales contains a bale opening device capable of being lowered on a bale suspended from a bridge-like machine frame which is fashioned in the form of a portal and is capable of travelling along a guide rail, said bale opening device being equipped with a conveying device. A bale opening roll or plucker roll (6) is provided as the bale opening device, its axis of rotation being perpendicular to the direction of movement of the machine frame and its working width being at least 75% of the total width of the machine frame. A suction channel (9) fixedly installed above the bales (B) serves as the conveying device for the fiber material taken from the bales (B).The device is of simple construction and has a usable opening width essentially equal to its overall width and makes it possible to achieve good fiber mixing.

Abstract: In a plucking device, capable of travelling back and forth, for the plucking of fibers from bales of fiber two toothed rollers are provided. One is located before, and the other after, the toothed plucking roller, their axes being parallel to the axis of the latter. The arc of the base diameter at the bases of the teeth of these toothed rollers is tangent to a plane which lies within or below the plane tangent to the arc of the outside diameter of the plucking roller. The device makes it possible to limit the plucking action securely without using grates and to maintain it constant over the entire surface of the bale.

Abstract: Apparatus for the removal by suction of fiber material on a movable bale opener which includes a suction channel with a fixed connection opening and a movable connection opening. The movable connection opening is part of a longitudinal slit in the suction channel, capable of being sealed by means of a covering band.In a space-saving arrangement which does not hinder the laying down of bales and makes it possible to remove the fiber material by suction in a pneumatically advantageous manner, the suction channel 3 is located in a plane above the bales B and the covering band 4, attached to the two ends of the longitudinal slit, 31 is held in sealing position by magnetic force.

Abstract: In a fiber removing roll 1 for a bale opener, the teeth 2 are removably attached on the circumference of the roll. They are provided with a contact surface 21 adapted to the circumferential contour of the fiber-removing roll and are held on the contour by screws screwed into pegs 4. The teeth are thus attached securely and can be replaced easily. In order to provide the teeth with a secure hold, independently of manufacturing tolerances, the contact surface is reduced to two contact shoulders 22, 23 spaced at a distance from each other.

Abstract: A method and apparatus for slipping tubes on pegs carried on a transport belt which extends along a spinning machine or twisting machine. A slipping-on apparatus for said tubes is located above the transport belt and inserts the tubes on the pegs. A sensing device monitors the seating of the tubes on the pegs and a lifting off device removes the tubes that are improperly seated on the pegs. After an improperly seated tube is removed from the peg, another tube is inserted thereon.

Abstract: In a pneumatic gripper for bobbin changer devices with an elastically deformable collar in the gripper housing, the gripper housing (2) and the collar (3) are of bell-shaped construction. The collar (3) is inserted into the gripper housing (2). The collar (3) overlaps the edge (20) of the gripper housing (2) and is pressed airtightly against the edge (20) by means of a screw collar ring (4). The gripper can be produced with a simple construction and cheaply and retains the cop with directional stability.