Abstract: The invention relates to combing element for a circular comb of a combing machine that is connectable to a base body of the circular comb via fastening means. The combing element has a plurality of adjacently situated clothing elements oriented transversely with respect to the longitudinal direction of the combing element and provided with a toothed clothing. The combing element has a mounting bar with a supporting surface on which the clothing elements rest. The ends of the clothing elements protrude beyond the lateral faces of the mounting bar adjoining the supporting surface, and the clothing elements are joined to the mounting bar by means of at least one weld seam applied between the base surfaces of the ends of the clothing elements that protrude beyond the supporting surface of the mounting bar and the mounting bar.

Abstract: In the case of a mounting for an opening roller comprising a plurality of teeth, all the tooth faces and the tooth backs are inclined in rotational direction. At their tips, the tooth faces form an angle relative to an opening roller radial plane of between 10.degree. and 30.degree. . The tooth backs are more inclined to the radial plane at the tooth tips than at the tooth bases. The tooth backs are inclined at the tooth tips in such a way that an extension of the tangent to the tooth back at the tooth tip intersects the tooth face of the following tooth at an intersecting point which is between one-fifth and four-fifths of the tooth height of the following tooth. At least one-half of a tooth height from the tooth tip to the tooth base has a roller circumferential direction width which is at least as large as the distance between the back of the respective tooth and the face of a next adjacent following tooth.

Abstract: In the recess of a housing (4) of an open-end spinning device containing a driven opener roller (40), an insertion piece (32) is provided which contains the first channel part (30) of a fiber feeding channel. The insertion piece (32) is installed in housing (4) by an elastic retaining element in such a manner as to be replaceable. The retaining element may be part of a catch and be formed for this purpose by a ring or pot-like insert (43) which lines the interior of the housing (4) containing the opener roller (40) and which has technologically necessary openings (430, 432, 431) in its circumferential wall. The edges of the lateral walls of the first channel part (30) towards the ring or pot-shaped insert are adapted to the curvature of the insert (43). These lateral walls extend, relative to a perpendicular dropped from the center of the insert (43) on the longitudinal axis of the insertion piece (32), up to the side of the perpendicular (323) away from the spinning element (10).

Abstract: Denim fabric is made from novelty cotton yarn having irregularly spaced irregularities (e.g. slubs) about one-half inch to two inches in length. The cotton novelty yarn is made by separating cotton sliver into cotton fibers, and acting on the cotton fibers with a negative wire combing roll, and then twisting the cotton fibers into the cotton novelty yarn. The negative wire combing roll has a tooth angle of about -0.01.degree. to -15.degree.. The novelty cotton yarn is made into a warp of about 54-100 (e.g. 54-78) ends per inch, and is ring dyed so that the core of the yarn remains white. The warp is woven with a filling yarn to produce a denim fabric with a weight of about 5 oz.-17 oz. per sq. yd. having the weave and yarn size selected so that a tight construction is provided which highlights the slubs. The fabric is subjected to surface abrasion to remove the surface of dye on the slubs to show a lighter slub than body of the fabric.

Abstract: An improved combing or opening roll assembly for open-end spinning machines includes means for cleaning the inner cavities by direct axial injection of compressed air into the cavity, and an outer surface configuration designed to inhibit or prevent accumulation of microdust and fibers thereon. One outer surface of the roller unit includes a color-coded speed indicating means which enables an operator immediately to visualize the relative speed of rotation, as a safety factor decreasing the likelihood that an operator would inadvertently touch the combing ring during rotation.

Abstract: A fiber opening and cleaning machine includes an opening roll provided with inclined beater elements. Such beater elements have a wave shaped design and are considerably less in diameter than the relatively larger diameter beater rods customarily used in such machines. The advantage of the wave shaped beater elements lies in the grasping and spiral conveying of the fiber flocks fed into the machine.

Abstract: A travelling fiber tuft detaching device for removing fiber tufts from top surfaces of stationarily supported fiber bales includes a housing; first and second toothed, parallel detaching rolls accommodated in the housing; first and second pivot frames carrying the first and second detaching rolls, respectively; a pivot shaft for pivotally securing the first and second pivot frames to the housing to provide for a pivotal motion of each pivot frame in a substantially vertical plane relative to the housing; and first and second setting devices articulated to the first and second pivot frames, respecitvely, and to the housing for exerting separately settable adjusting forces to the first and second pivot frames, whereby a height level of the detaching rolls relative to one another is set for effecting penetration of the detaching rolls into a top bale surface to different depths thereof during the detaching operation.

Abstract: An opening roll for an open-end spinning device upon which clothing is carried. The opening roll includes a unitary member that has enlarged surfaces provided on circumferentially spaced ribs extending between a centrally located hub and a ring shaped concentric surface upon which pressure can be applied for ejecting the unitary member from a mold and for permitting drilling and filling with material for balancing.

Abstract: A machine for cleaning textile fibres including a casing, a horizontal opening roller rotatably mounded in the casing, the roller body having a roller body and beater rods protruding from the peripheral area of the roller body and bar grates arranged below the underside of the opening roller. Textile fibres in the form of flocks are conveyed in a delivery air stream through an inlet which is arranged at a first end of the opening roller. An outlet for egress of the delivery air stream is arranged at the other end of the opening roller. In one arrangement, the radial length of the beater rods decreases from the inlet to the outlet and the diameter of the roller body increases from the inlet to the outlet. This arrangement allows the opening of the fibre flocks to be improved and permits a more complete separation of impurities through the bar grates.

Abstract: A roller for the treatment of fiber masses for the textile industry has a sawtooth wire received in a rectangular cross section helical groove of a steel roll body and indented by a peening or indenting roller to provide, by plastic deformation of the foot portion, the outward forces which clamp the foot portion of the wire against the ribs flanking the groove of the roller body. As a consequence, the roller body as a whole is not deformed.

Abstract: A pinned opening roller for an open end spinning machine wherein the pinning pattern around the circumferential surface of the roller is provided by spaced pairs of rows of pins which may extend parallel to the rotational axis of the roller, the spacing between the pairs of rows being greater than the spacing between the rows in each pair and in any pair, the pins in one row being staggered relative to those in the other row.Preferably, for a 71/2" circumference roller approximately 1" wide the pins in each row are spaced 0.1" apart and the rows in a pair are 0.03" apart and there are 28 pairs of rows around the circumference.Preferably, the pins in one row of a pair are each spaced equidistant from their adjacent pins in the other row and the pins in the first row of each pair are helically arranged and those in the second row of each pair also extend helically around the circumference of the roller.

Abstract: The removal roll carrier can be inclined at an angle while the carrier is simultaneously moved vertically and while the removal apparatus moves over the line of fiber bales. This has the advantage that flocks can be removed from the bales not only in the horizontal direction but also in an inclined direction. A microprocessor controls the pivoting of the removal apparatus into a predetermined inclined position while simultaneously moving the removal apparatus vertically during movement of the machine frame along the path of the fiber bales.

Abstract: The fiber flock removal apparatus has a pair of removal rolls which may be adjusted in height relative to each other to obtain different depths of penetration into the fiber bales. The removal rolls may rotate codirectionally with the direction of travel or may operate in contra-direction with respect to the direction of travel. The rolls may be mounted individually for vertical movement relative to each other or may be mounted in a common removal means which is pivotal about a horizontal axis to achieve adjustability in the relative heights of the removal rolls. In one embodiment, the rolls are maintained in a common horizontal plane while grid bars are angularly adjusted to obtain different depths of penetration of the removal rolls into the fiber bales.

Abstract: In the case of a ring mounting for opening rollers of spinning machines having a ring-shaped basic body, out of the outer circumference of which a set of teeth is worked by means of notches extending essentially in axial direction and by means of grooves extending essentially in circumferential direction, it is provided that the grooves are deeper than the notches, the depth of the grooves amounting to 1.6 to 1.8 times the depth of the notches.

Abstract: An opening roller for an open-end spinning arrangement is disclosed which contains a basic body pressed onto a shaft. This basic body contains an exchangeable ring mounting which is held by means of its end faces between a flange of the basic body and a tension disk. It is provided that the tension disk fitted onto the shaft is loaded in the axial direction by means of a screw which is screwed axially into the shaft and which, by means of the head, rests against the front face of the shaft. A spring element, preferably a cup spring, is arranged between the head of the screw and the tension disk.

Abstract: A fibre opening device for use in apparatus for spinning fibres into yarns comprising a housing in which an opening roller is rotatably mounted, the housing having a trash separation zone and a fibre stripping zone and the roller having a cylindrical working surface from which combing elements project and being substantially hollow with holes extending through the wall defining the cylindrical working surface to permit a flow of air therethrough, wherein cleaning means are provided for the interior of the roller, the cleaning means consisting of a vacuum suction device and a compressed air jet device which remove trash, dust and short fibres from the interior of the roller. It is preferred that the air jet device is in front of the suction device relative to the rotation of the roller and on the side of the roller remote from where combing of fibres occurs.

Abstract: An opening cylinder for an open-end spinning machine comprising a cylinder body of aluminum or similar material having a helical groove therein for receiving the foot portion of a saw-tooth wire fillet wherein the width of the groove is smaller than the foot portion of the saw-tooth wire fillet and the material of opening cylinder is deformed by press-rolling the wire fillet into the grooves.

Abstract: In the case of a mounting or ring fitting for an opening roller for open end spinning machines and the like, it is provided that the tooth tips are chamfered and form cutting edges which extend essentially in the travel direction of the teeth.

Abstract: In the case of a mounting for opening rollers having a plurality of teeth, it is provided that the lateral profiles of the teeth are located in essentially radial surfaces, and that, not before the area of the tip, at least one lateral profile has an end area which extends to the other lateral profile and is inclined with respect to the radial plane.

Abstract: A method of securing a plurality o048268999 f replaceable segments to a base wherein a plurality of deformable supporting members are releasably fastened to the base and wherein co-operating means are provided on a rear face of the segments and on the supporting members, the arrangement being such that the means connecting the supporting members to the base are also used to cause the means on the supporting members to engage with the co-operating means on the rear of the segments.While it is envisaged the invention could be used for securing any working surface to a base member, the invention is particularly suited to securing replaceable segments on a rotary work member and also has particular utility in the textile field for connecting staves to a bas roller or the like.

Abstract: An opening assembly for an open-end spinning arrangement is provided which includes a steel alloy fitting ring element arranged on a rotatable roller body element for opening a silver into individual fibers. The fitting ring element includes a base wall having a radial thickness no greater than 2.2 mm, and includes a plurality of radially extended teeth unitary with the fitting ring element extending from the base wall. The teeth have lateral flanks formed by at least one cirumferential groove on an outer surface of the fitting ring element, and have front and back edges formed by at least two axially extending longitudinal grooves. The front and back edges have a radial height of about 0.75-0.80 times a radial height of the lateral flanks. The base wall radial thickness has a dimension of about 0.60-0.72 times the radial height of the lateral flanks. The height of the teeth is greater than the distance between the lateral flanks of axially adjacent teeth. The teeth are inclined toward a rotational direction.

Abstract: There is disclosed a picker assembly comprising a picker bar having a T-slot therein and a plurality of picker teeth. The picker teeth have bases in the slot with wedging surfaces thereon for maintaining the teeth against a surface of the bar when the tooth working portion strikes the work, to prevent movement of the bases, and wearing of the teeth bases and picker bar.

Abstract: The opening cylinder comprising a cylindrical ring serving as a needle support and being provided with needle-housing bores extending from the inner ring surface to the outer one is designed to carry needles comprising a point section of generally tapered shape and a shaft section, the latter being pressed into and seated with force fit in a radially inner section of a corresponding one of said bores. A radially outer section of the bore surrounds a portion of said needle point section so as to form an annular groove therearound at the orifice of the bore in the outer ring surface. The radially inner section of the bore or at least part thereof has a diameter which is at least as great as the diameter of the outer section of the bore in the range of its orifice in the outer ring surface.

Abstract: A novel fiber drafting system disclosed according to which a textile fiber strand is passed through a plurality of pairs of drafting rollers wherein one of each pair of drafting rollers includes a circumferential groove for receiving the fiber strand and the other roller includes a circumferential rib for compressing the strand in the recessed groove to a cross-sectional shape substantially conforming to the groove. The plurality of pairs of rib and groove rollers are rotated such that each successive pair along the drafting pathway of the textile fiber strand has a greater circumferential speed than the preceeding pair of drafting rollers. In this fashion a textile fiber strand is compressed into a cross-section configuration which substantially equalizes the pressure on all fibers being drafted and thereby provides a more uniformly drafted strand.

Abstract: An opening roller apparatus is provided for an open-end spinning arrangement of the type having a shaft supporting an opening roller base body. The opening roller apparatus includes an exchangeable fitting ring device which fits over the opening roller base body. An attaching device is provided for holding the exchangeable fitting ring on the opening roller base body. The attaching device operates free of the opening roller base body. A process for carrying out the exchanging or replacing of the fitting ring device is also provided.

Abstract: An opening roller assembly for open end spinning machines wherein the roller is releasably and slidably supported on a drive shaft of the open end spinning machine to enable easy removal of the roller for refurbishing, replacement or repair. Non-mechanical means is provided to maintain the roller in an operative position on the drive shaft. Such means may comprise magnetic or fluid pressure means, or gravity. When in its operative position on the shaft, mechanical drive means extending directly or indirectly between the drive shaft and the roller will automatically become engaged. These drive means may be provided by a drive pin or mating engaging surfaces, for example.

Abstract: The invention has for its object a cut-tobacco distributing device for cigarette making machines.The distributing device includes a rotating drum (2) provided with points (3) which takes or receives the cut tobacco.This drum (2) provided with points (3) cooperates with a rotating detaching cylinder (18) which takes the cut tobacco from the said drum (2).According to the invention, in order to reduce the mechanical stresses which exert a degrading action on the cut tobacco, the points (3) of the drum (2) are retractable inside the drum (2) itself and are controlled by cams (8, 9) which retract them, temporarily, in a complete or almost complete way in the region of the detaching cylinder (18).The latter is constructed as a pneumatic suction cylinder without points.

Abstract: An arrangement is provided for an opening roller having a plurality of teeth wherein the tooth faces exhibit an oblique curvature in the direction of rotation of the roller resulting in a face angle between 12.degree. and 30.degree. in the region of the tip of the tooth and a face angle of about +5.degree. to -5.degree. in the region of the bottom of the tooth leading to a curved portion which extends to the back of the preceeding tooth. The arrangement provides for improved combing action on the fiber band and results in improved wear characteristics among other beneficial results.

Abstract: A combing roller for an open-end spinning machine which utilizes whirling airflow. The roller has on its circumferential surface and in its axial direction dovetail grooves, in which needle plate laminated members which have needle rows in the axial direction of the roller are removably mounted so that each needle row can be mounted and removed simply. The needle plate laminated member is made by connecting together in a row a plurality of needle plates, with a spacer between adjoining ones in some cases, by a connecting member. The needle plate has at its upper part a needle base portion with at least one needle head and at its lower part a needle insertion portion with a dovetail shape to be fitted in a dovetail groove with the roller, having at the substantially central part of its bottom a part in which the connecting member is inserted and fastened.

Abstract: The invention relates to an opening cylinder for open-end spinning machines or the like comprising a cylindrical basic body (1) with helically extending grooves (2) for the accommodation for fittings. To achieve high combing quality with easy replaceability of the fittings and low cost weight-saving design of the basic body, it is provided according to the invention that the grooves (2) for the accommodation of the root (9) of a needle-bar (8) exhibit an undercut and run at an acute angle (.alpha.) to the longitudinal axis (3) of the cylindrical basic body (1).

Abstract: Saw toothed metal parts as outfits for comb segment of a porcupine for textile machines such as combing machines in which each metal part has a stilt functioning as the holding component in the comb segment and a plurality of teeth extending outwardly from the stilt, the said teeth being inclined in pointed angle to the radial direction of the comb segment in the direction of rotation of the comb segment, the height of the centers of the teeth increasing in the direction of rotation. The angle of action that is the angle between the front face of a tooth and the radius passing through the tip of the tooth, as well as the distance between the centers of the teeth increase in the direction of rotation of the comb segment.

Abstract: An opening roller for an open end spinning machine which may be formed in one or two parts, the opening roller having a central body or hub (1) preferably provided with a central cylindrical aperture (10) therein for mounting on a drive shaft of an open end spinning machine, there being an outer ring (2) having a cylindrical external surface (7), the ring (2) supporting suitable combing elements in the form of spaced pins (14) or card wire and wherein the ring (2) is spaced from and connected to the central body (1) by means of septal walls (3) which may either extend radially or be inclined to respective radial planes passing through them, and wherein the spaces between the septal walls may be filled with a suitable plastics medium (11) which may surround the pin tails (18) if these project from the rear face (19) of the ring (2). The roller may be machined from a one-piece extrusion (FIG. 2) or after suitable machining may be assembled from two parts which may themselves be extruded.

Abstract: A cigarette making machine or feed apparatus for fibrous material other than tobacco includes a pinned conveyor (20) arranged to feed material from a supply and past refusing means (22) whereby the feed conveyor will carry a metered stream of the material, characterized in that the feed conveyor has relatively high pins (36) which are substantially evenly distributed among relatively low pins (38) or lie in obliquely extending rows (34, 40, 42, 44) between rows of relatively low pins.

Abstract: An opening roller unit for open-end spinning installations as a shaft supported in a bearing box and an opening roller arranged on an end of the shaft which projects from the bearing box. The opening roller extends over the bearing box in a manner forming a cavity that is sealed toward the outside with an annular sealing gap and comprises the base member and the ring detachably secured thereto which has a fitting provided on the outer periphery thereof. The detachable ring is mounted upon the base member in a manner blocking the external axis to the cavity. In accordance with one preferred embodiment, the ring of the opening roller extends over the bearing box and the cavity is defined by the ring and bearing box, while the scaling gap is provided between the ring and the bearing box in conjunction with an annular insert attached to the bearing box.

Abstract: Toothed edging apparatus for mounting on a rotatable support of a textile machine includes tooth segments each having a plurality of teeth elements arranged generally along an arc and a foot portion from which the teeth elements extend, the foot portion being mounted on the rotatable support of the textile machine. At least one recess is provided in the segments, and a holding element passes through the recesses and is secured to the support for holding a plurality of such segments on the rotatable support, the holding element having a longitudinal axis disposed generally parallel to the axis of the rotatable support.

Abstract: The device for separating individual fibers of a fiber sliver comprises sliver feed rollers, sliver opening means comprising a press roller and a separating roller adapted to carry a stack of thin disks provided with combing elements which consist of teeth or wire points for separating the fibers and with drafting elements for parallelizing the fibers, and a duct for the delivery of freed fibers. The separator can be employed for spinning slivers containing either long or short fibers or a mixture of both.

Abstract: The invention relates to opening rollers for open-end spinning apparatus, particularly roller which comprise a body on which is wound a helical coil of metallic wire type card-clothing.The roller body comprises two body parts secured together in end-to-end relationship, and the metallic wire type card-clothing is formed into a pre-set helical coil which is located on an external cylindrical surface of the body, the end flanks of the coil engaging respectively with two abutments one on each of the two parts of the roller body, so that the coil is constrained axially between the abutments in a manner such that adjacent convolutions of the coil are held in abutting relationship.It is preferred to use interlocking card-clothing wire. It is also preferred to make the roller body parts in plastics material, and to secure them together by an adhesive, and in this manner a disposable roller is produced.The specification describes methods of refurbishing existing opening rollers, in accordance with the invention.

Abstract: The invention relates to opening rollers for open-end spinning apparatus, particularly of the type in which there is a roller body on which is wound a helical coil of metallic wire type card-clothing.The card-clothing coil is located between a pair of abutments, each of which has an annular inner end face in the shape of a helix with an acclivity or step between its maximum and minimum axial displacements, this annular face being complementary in shape to the adjacent end of the card-clothing coil, so that when the ends of the coil are engaged with their respective abutments, there are no recesses between the roller body and the ends of the coil in which lint can lodge.The abutments can be formed by separate distance pieces, or by forming integrally with the roller body, or by moulding after the card-clothing coil has been applied to the roller body.It is preferred to use interlocking type card-clothing wire.

Abstract: An opening or beater roller for open-end spinning machines, in which a cylindrical roller has a sawtooth wire wound helically onto its outer surface. The arrangement is such that a base region is widened in relation to the teeth. Base regions of adjacent turns of sawtooth wire are separated by a gap from one another, and the ratio of the height to the width of the base region is less than one.

Abstract: In an improved combing roller provided with a metallic wire mounted on a body thereof comprising a main cylindrical body and a pair of flanges coaxially formed at both ends of the main cylindrical body, a base portion of the metallic wire rigidly pressed into a right hand or a left hand helical groove formed in the main body and the working direction of the metallic wire coincide with the rotational direction of the combing roller, at a terminal portion of the metallic wire facing one of the flanges on a side of the combing roller corresponding to the direction of progress of an imaginary right hand screw imaginarily engaged with the above-mentioned right hand helical groove or an imaginary left hand screw imaginary engaged with the above-mentioned left hand helical groove when the imaginary screws are turned in the direction corresponding to the rotational direction of the combing roller, at least one tooth is inclined toward the above-mentioned flange.

Abstract: Break-up roller with card clothing for an open-end spinning frame including a base member, and an inherently stable, exchangeable ring carrying the card clothing and lockingly connected to the base member.

Abstract: The invention relates to opening rollers for open-end spinning wherein the opening roller has a support part for attachment to the driving spindle and an adapter having the fiber engaging teeth of the roller. According to one aspect of the invention, the support part and adapter have a releasable connection which both establishes driving attachment of the adapter to the support part and secures the adapter on the support part without the intervention of a third element. The invention also includes an arrangement in which a screw screwed axially into the support part has a head received in a recess formed partly in the support part and partly in the adapter whereby the screw both establishes a driving connection between the two parts and secures the adapter to the support part.

Abstract: Disclosed herein is a fiber feeding roller for an open-end spinning apparatus, wherein a plurality of projections with flat surface are formed in rows extending in axial direction of the body of said fiber feeding roller on the outer circumferential surface thereof and, simultaneously, a plurality of projections with knurled surface are arranged between the aforesaid projections with flat surface, whereby preventing harmful sliver slippage on said feeding roller and also providing a uniform nip for the sliver irrespective of the size thereof so that said fiber feeding roller may be applicable to a wider range of count numbers of spinning yarns and the quality of such spinned yarns may be improved as well.

Abstract: In an improved combing roller provided with a metallic wire mounted on a body thereof comprising a main cylindrical body and a pair of flanges coaxially formed at both ends of the main cylindrical body, a base portion of the metallic wire rigidly pressed into a right hand or a left hand helical groove formed in the main body and the working direction of the metallic wire coincide with the rotational direction of the combing roller, if one of flanges on a side of the combing roller corresponding to the direction of progress of an imaginary right hand screw imaginarily engaged with the above-mentioned right hand helical groove or an imaginary left hand screw imaginarily engaged with the above-mentioned left hand helical groove when the imaginary screws are turned in the direction corresponding to the rotational direction of the combing roller, is defined as a first flange, while the other flange is defined as a second flange, the axial size of the free cylindrical space formed at the side of the first flange is

Abstract: The invention relates to the method of making a beater roll comprising a body and a saw tooth wire helically fitted to the surface of the body wherein the helical convolutions are in spaced relation and wherein a sealant is employed to seal repetitive gaps or spaces between the base of the wire and the smooth cylindrical surface of the beater roll, such repetitive spaces or gaps being caused by placing the set necessary to accommodate wire clothing to the cylindrical surface of a roll as used in open end spinning.

Abstract: A fiber sliver opening roll of an open-end spinning device is equipped with needles, wherein the needle shaft of each needle is mounted in a bore. The surface of the opening roll is provided with outer, wide recesses which clear or leave free the needles at all sides. Below the bases of the recesses there are located the aforementioned bores which are smaller than the recesses. Between each needle and the side wall of the related recess there is left free a clearance or space. The depth of each recess is greater than the distance at the recess base between the outer surface of the needle and the inner wall of the recess, and which depth amounts to from 1 to 10 times the aforementioned distance. Owing to the provision of each such recess the related needle extends free on all sides between the roll surface and the bore in such a manner that there are prevented fiber jamming and fiber accumulations on the needles.

Abstract: The invention relates to a beater roll comprising a body and a saw tooth wire helically fitted to the surface of the body wherein the helical convolutions are in spaced relation and wherein a sealant is employed to seal repetitive gaps or spaces between the base of the wire and the smooth cylindrical surface of the beater roll, such repetitive spaces or gaps being caused by placing the set necessary to accommodate wire clothing to the cylindrical surface of a roll as used in open end spinning.

Abstract: A combing roller including a reversible pinned ring, a ring core and a cover plate mounted on the ring core, the ring core and the cover plate having operating surfaces for mutually supporting the ring, and a plurality of tightening elements radially spaced in the core and plate adjacent the operating surfaces for securing flanges on the plate and core against the edges of the width of the ring. Preferably the width of the ring is greater than the combined widths of the operating surfaces.

Abstract: An opening roller unit for open-end spinning installations as a shaft supported in a bearing box and an opening roller arranged on an end of the shaft which projects from the bearing box. The opening roller extends over the bearing box in a manner forming a cavity that is sealed toward the outside with an annular sealing gap and comprises the base member and the ring detachably secured thereto which has a fitting provided on the outer periphery thereof. The detachable ring is mounted upon the base member in a manner blocking the external axis to the cavity. In accordance with one preferred embodiment, the ring of the opening roller extends over the bearing box and the cavity is defined by the ring and bearing box, while the scaling gap is provided between the ring and the bearing box in conjunction with an annular insert attached to the bearing box.

Abstract: An opening roller apparatus is provided for an open-end spinning arrangement of the type having a shaft supporting an opening roller base body. The opening roller apparatus includes an exchangeable fitting ring device which fits over the opening roller base body. An attaching device is provided for holding the exchangeable fitting ring on the opening roller base body. The attaching device operates free of the opening roller base body. A process for carrying out the exchanging or replacing of the fitting ring device is also provided.