Abstract: In an apparatus for the fiber-sorting or fiber-selection of a fiber bundle comprising textile fibers, especially for combing, which is supplied by a supply device to a fiber-sorting device, especially a combing device, having clamping devices which clamp the fiber bundle at a distance from its free end, which is combed to remove non-clamped constituents, the clamping devices each comprise two clamping jaws. To increase productivity and to enable an improved combed sliver to be obtained, downstream of the supply device there are arranged at least two rotatably mounted rollers rotating rapidly without interruption, the clamping devices being spaced apart in the region of the periphery of the rollers, and the clamping jaws of the each clamping device are arranged to be movable in relation to one another and separately drivable.

Abstract: In an apparatus for the fibre-sorting or fibre-selection of a fibre bundle comprising textile fibres, especially for combing, which is supplied to a fibre-sorting device, especially a combing device, having clamping devices which clamp the fibre bundle at a distance from its free end, which is combed to remove non-clamped constituents, the clamping devices each comprise two clamping jaws. To increase productivity and to enable an improved combed sliver to be obtained, downstream of the supply device there are arranged at least two rotatably mounted rollers rotating rapidly without interruption, the clamping devices being spaced apart in the region of the periphery of the rollers, and each clamping device comprising at least one nipper part which is at least partially resilient. The clamping jaws may have a high coefficient of friction in the region of their clamping surfaces.

Abstract: In an apparatus for the fiber-sorting or fiber-selection of a fiber bundle comprising textile fibers, especially for combing, clamping devices are provided which clamp the fiber bundle at a distance from its free end, and a mechanical arrangement is present which generates a combing action from the clamping site to the free end, in order to loosen and remove non-clamped constituents. To enable productivity to be substantially increased in a simple manner and an improved combed sliver to be obtained, downstream of the supply device there are arranged at least two rotatably mounted rollers, clamping devices being distributed spaced apart in the region of at least one said roller's periphery, and the arrangement for generating a combing action is inside the roller.

Abstract: In an apparatus for the fiber-sorting or fiber-selection of a fiber bundle comprising textile fibers, especially for combing, which is supplied to a fiber-sorting device, especially a combing device, having clamping devices which clamp the fiber bundle at a distance from its free end, which is combed to remove non-clamped constituents, the clamping devices each comprise two clamping jaws. To increase productivity and to enable an improved combed sliver to be obtained, downstream of the supply device there are arranged at least two rotatably mounted rollers rotating rapidly without interruption, the clamping devices being spaced apart in the region of the periphery of the rollers, and each clamping device comprising at least one nipper part at least partially of a lightweight material. The clamping jaws may have a high coefficient of friction in the region of their clamping surfaces.

Abstract: In an apparatus and a method for the fibre-sorting or fibre-selection of a fibre bundle comprising textile fibres, especially for combing, which is supplied by means of supply device to a fibre-sorting device, especially a combing device, and which is removed by a take-off device, to enable the productivity to be substantially increased and an improved combed bundle to be obtained, downstream of the supply device there are arranged at least two rotatably mounted rollers rotating rapidly without interruption, which are provided with clamping devices for the fibre bundle, wherein an actuating device for adjusting geometric and/or speed-related variables in the relationship of the rollers to one another are associated with at least one roller.

Abstract: In an apparatus for the fibre-sorting or fibre-selection of a fibre bundle comprising textile fibres, especially for combing, which is supplied to a fibre-sorting device, especially a combing device, having clamping devices which clamp the fibre bundle at a distance from its free end, which is combed to remove non-clamped constituents, the clamping devices each comprise two clamping jaws. To increase productivity and to enable an improved combed sliver to be obtained, downstream of the supply device there are arranged at least two rotatably mounted rollers rotating rapidly without interruption, the clamping devices being spaced apart in the region of the periphery of the rollers, and each clamping device comprising at least one nipper part at least partially of a lightweight material. The clamping jaws may have a high coefficient of friction in the region of their clamping surfaces.

Abstract: An arrangement for a rotatable circular comb for processing fibers supplied in the form of a fiber band has arrangement sections fastened on a circular cylindrical mantle surface that is rotatable about an axis of rotation in a direction of rotation. The arrangement sections are arranged behind one another in a circumferential direction of the circular cylindrical mantle surface such that the arrangement sections successively engage the fiber band in an engagement sequence when the arrangement is rotated in the direction of rotation. A first one of the arrangement sections that engages the fiber band first in the engagement sequence upon rotation of the arrangement is an engagement section and the arrangement sections arranged successively behind the engagement section are follower sections. The engagement section has a lesser combing effect than at least one of the follower sections. At least one of the follower sections has a greater length in the circumferential direction than the engagement section.

Abstract: A device for opening slivers (4) for feeding an OE spinning device (3), comprising a sliver feed device defining a sliver clamping position (7), a rotating opening roller (8) having a circumference with spirally extending combing elements (9, 24) for engaging at the clamping position (7) into a sliver being fed by the sliver feed device. In order to improve the opening of the sliver, a support roller (13, 28, 29) also having spirally extending combing elements (14, 24, 25, 26) is arranged in the direction of fiber feeding after the clamping position (7) with its combing elements (14, 24, 25, 26) extending into the intermediate spaces between the spirally extending combing elements (9, 24) of the opening roller (8) and rotates counter to the opening roller (8) for combing sliver therewith in a common effective range (11).

Abstract: An opening roller for an open-end spinning arrangement is provided with a combing ring, which is slidably mounted onto a base body and is supported between two clamping surfaces. In order to fix the combing ring radially to a cylindrical guiding surface of the base body, the combing ring is provided with a centering surface on its inner circumferential surface. The combing ring has stopping surfaces on its end sides, which are arranged to engage the clamping surfaces. The centering surface is limited to an end area of the inner circumferential surface. The part of the inner circumferential surface of the combing ring which is located outside of this end area is free from counter-surfaces of the base body. As a result of this arrangement, the seat-engaging surfaces are on the one hand very short, while on the other hand various embodiments of combing rings can be used.

Abstract: A circular comb for a textile combing machine has a comb member formed around a part of the peripheral surface of an essentially cylindrical support member wherein a channel is formed between the comb member and the support member. For the purpose of reducing the dynamic pressure in front of the comb member generated when rotating the circular comb, the channel is provided with a cross-sectional form wherein the radial and/or axial width increases along the rotational direction of the comb.

Abstract: The circular comb segment is constructed to leave a large free space at the front edge to avoid deflecting a tuft delivered from a nipper unit away from the foremost needles or clothing points at the front edge. The comb segment may be provided with recesses at the sides of the front edge to receive screws for fixing the segment to a comb roller or may be provided with projecting lugs for securement to a comb roller. In one embodiment, the lugs may be replaced by clamping plates which engage against a reduced lip at the front edge of the segment or engaged within a recess or groove at the front edge. In still another embodiment, the comb segment may be provided with an inwardly offset projection to be received in a recess of the roller and secured therein.

Abstract: A separation apparatus for fiber webs (6) with parallelized fiber positions wound on a processing drum (4) includes an arm (1) rocking relative to the processing drum, the arm carrying a separation comb (13). The arm and its separation comb (13) are mounted for movement along and controlled by the shape of a separation cam (3) implementing the separation of the fiber web (6) wound on the processing drum (4) at a specified site and the unwinding of the separated fiber web from the processing drum (4) by the free end of the fiber web (6) along a generatrix of the surface of the processing drum (4).

Abstract: An improved combing cylinder utilized for a combing machine provided with a fringe control member having a chevron shaped cross section and a forwardly inclined surface sloped toward the cylindrical boss of the combing cylinder, with respect to the direction of rotation of the combing cylinder. The fringe control member is rigidly mounted on the combing cylinder at a position downstream of the needle segment of the combing cylinder, in a condition satisfying the timing whereby the tip line surface of the fringe control member closely faces the bottom detaching roller when the detaching rollers start to change their direction of rotation from a reverse rotation to a normal rotation. The radius of the forward end of the fringe control member is made smaller than the radius of a peripheral surface of the tip end of the combing needles of the needle segment, so that a recessed portion is formed adjacent to and behind the last alignment of combing needles of the needle segment.

Abstract: The drive mechanism for the feed roll of a combing machine employs a freewheel having an inner member secured to the feed roll and a concentric outer member secured to the pivotal arm which mounts the top nipper. In addition, locking elements are disposed between the inner and outer members and the outer member provided with a sawtooth configuration so that the locking elements may lock during rotation of the outer member under the influence of the arm and may move into a released position during an opposite rotation of the outer member. The lost motion or idle travel in the changeover between the released position and the locking position is quite reduced. Thus, feeds are always of substantially exactly the same magnitude with a resulting improvement in the produced sliver.

Abstract: A combing cylinder for a combing machine having a combing segment with a wing-shaped profile. This segment is fastenend on the body of the cylinder. An air duct is arranged between the inside surface of the combing segment and the outer cylindrical surface of the cylinder body. Because of the cooperation between the wing-shaped profile of the combing segment and the air duct, the air flow produced by the rotation of the cylinder causes a suction effect which pulls the fibers towards the advancing comb. This suction assures early engagement of the fiber fringe to be combed by the teeth of the combing segment.

Abstract: A device for treating fibers includes a cylindrical support having an axis of rotation. The support has a circular outer peripheral surface and carries a set of combs which extend parallel to the rotational axis of the support. The combs are mounted on the support in such a way that the spine of each comb is held by the support with the teeth located radially outward of the peripheral surface of the support. The spines of the combs all project radially outward of such peripheral surface by the same distance.