Abstract: An opening roller for an open-end spinning arrangement is provided on its periphery with suction openings and with a combing structure comprising teeth. Each tooth exhibits a tooth front facing the rotational direction, which tooth front forms a negative front angle relative to a radial plane extending through a tooth tip inclined backwards in the opposite direction to the rotational direction.

Abstract: A throttle valve is provided within a discharge air duct located adjacent a fiber duct receiving a fiber laden air stream. The throttle valve cooperates with a stop in a lowered position to form a gap to allow a minimal air flow therethrough. In addition, a weight is provided on an arm attached to the throttle valve for pivoting therewith. The weight is disposed to counterbalance a substantial portion of the weight of the flap valve in the raised position of the valve so that the air flow maintains the valve in the open condition.

Abstract: An apparatus for detecting a foreign substance in a fiber tuft stream and for separating the foreign substance therefrom. The apparatus includes a conduit guiding the fiber tuft stream therethrough in a conveying direction; an optical sensor system situated at a first location of the conduit for detecting a foreign substance in flight and for emitting signals representing the foreign substance; a separating device situated at a second location of the conduit downstream of the first location as viewed in the conveying direction; an evaluating device for processing the signals; a control device connected to the optical sensor system, the separating device and the evaluating device for operating the separating device; and an opening device situated in the conduit upstream of the optical sensor system as viewed in the conveying direction for opening the fiber tufts prior to passage thereof past the optical sensor system.

Abstract: An apparatus for treating fiber and producing a fiber lap therefrom, includes a fiber feeder; a carding machine including a multi-roll licker-in assembly receiving the fiber material from the feeder, a main carding cylinder receiving fiber material from the licker-in assembly, a plurality of carding flats supported about a circumferential portion of the main carding cylinder and cooperating therewith, and a doffer receiving fiber material from the main carding cylinder; and a fiber lap forming device including a pneumatic fiber stripping device which has a blower for directing an airstream generally tangentially to the doffer for removing and entraining fiber material from the doffer, a hood having an inner face defining a chamber situated above and downstream of said doffer for receiving fiber material carried from the doffer by the airstream, a continuously driven, air-pervious receiving member having an upper face and an underside, and a suction device facing the underside of the receiving member for gener

Abstract: An apparatus for feeding fiber tufts to a fiber processing textile machine includes a feed chute having upper and lower ends; a densifying air stream generating arrangement for introducing an air stream into the feed chute to densify the fiber tufts therein; a screen forming part of a lower region of the feed chute for separating the air stream from the fiber tufts; an air removal hood immediately adjoining the screen externally of the feed chute; and an arrangement for forcing the air stream through the screen openings out of the feed chute into and through the air removal hood.

Abstract: A fiber processing machine includes an opening roll; a feed roller positioned at a first clearance from the opening roll and a feed tray positioned at a second clearance from the opening roll. The feed tray defines a nip with the feed roller for clamping and advancing fiber material in the nip to the opening roll. A setting arrangement is provided for adjusting at least one of the first and second clearances.

Abstract: An apparatus for feeding a fiber batt to a fiber processing machine includes a feed roll; a feed table formed of a plurality of separately movable feed table segments each cooperating with the feed roll and defining therewith a nip through which the fiber batt passes; a plurality of springs each being affixed to the feed table segment to form integral components therewith; and an elongated holding element extending spaced from, and generally parallel to the feed roll. Each spring is affixed to the holding element. The feed table segments are individually movable away from the feed roll against a force of respective springs in response to thickness variations in the fiber batt as the fiber batt passes through the nip. There is further provided a support for rotatably supporting the holding element.

Abstract: This invention relates to the creation of a different styled batt from tufts of fiber for delivery to textile machinery. In particular, the batt formed in the style of this invention is particularly suited for delivery to a carding machine. Carding machines are able to more fully utilize fiber processing capacity with lower risk of becoming overloaded because the tufts are less able to be pulled out of the batt intact but are held back allowing for the lickerin roll or other feed arrangement to pull fiber out of the batt in a more continuous and uniform manner.

Abstract: An apparatus for feeding a fiber batt to a fiber processing machine includes a rotatably supported feed roll; a feed table having a face portion cooperating with the feed roll and defining therewith a nip through which the fiber batt passes in an advancing direction; an arrangement rendering at least one part of a feed table surface wear resistant which directly contacts the fiber batt upon passage thereof; a movably supported elongated holding element extending spaced from, and generally parallel to the feed roll; and a plurality of sensor elements each being affixed to the holding element and each being arranged to undergo excursions as a function of thickness variations of the fiber batt passing through the nip. The sensor elements impart a displacing force on the holding element which moves to an extent representing a sum of the displacing forces. A sensor arrangement is connected to the holding element for generating a signal as a function of displacements of the holding element.

Abstract: A fiber tuft feeder includes a first chute; a feed roller supported at the outlet end of the first chute; an opening roller adjoining the feed roller and being supported below the feed roller and receiving fiber tufts therefrom; a second chute extending downwardly from the opening roller; a densifying air stream generating arrangement for introducing an air stream into the second chute to densify the fiber tufts therein; and a guide arrangement for directing the densifying air stream to flow consecutively along the feed roller and the opening roller.

Abstract: A fiber tuft feeding device for a fiber processing machine includes a fiber advancing member; and an extruded, light-metal feed tray defining, with the fiber advancing member, a nip between which the fiber tufts pass in a feed direction. The feed tray which has a length extending transversely to the feed direction, includes an elongated cavity extending along the tray length. An elongated element which is resistant to bending, is received in the cavity and is substantially coextensive therewith. The feeding device further includes a support for positioning the feed tray adjacent the fiber advancing member.

Abstract: A method of carding a fibrous feedstock to form a carded sliver uses a carding engine (10) having a main toothed wire cylinder (11), a taker-in (12), a doffer (13), and a series of flats (14) movable along a closed loop (15) having a working path (16) arranged alongside the outer periphery of the cylinder (11) between the taker-in (12) and the doffer (13) in order to carry out a carding operation on the feedstock in cooperation with the teeth of the rotating cylinder (11) and to remove waste or trash particles and short fibers from the feedstock, in which the cylinder (11) is driven to run at normal production speed giving a circumferential speed Y of e.g. 60,000 inches per minute whereas the linear speed X of the flats (14) is a substantially increased speed compared to normal running speeds e.g. at least 16 inches per minute, thereby to produce a sliver with surprisingly improved quality which can approach that of a carded, and subsequently semi-combed (scratch-combed) or combed sliver.

Abstract: A fiber tuft feeder includes a first chute; an opening roller supported at the outlet end of the first chute for receiving fiber tufts therefrom; a second chute extending downwardly from the opening roller; a densifying air stream generating arrangement for introducing a densifying air stream into the second chute to compress the fiber tufts therein; and a guide arrangement for orienting the densifying air stream toward the opening roller to combine the densifying air stream with an additional air stream generated by the opening roller by rotation thereof, for aligning the combined air stream in a direction of the second chute and for directing the combined air stream away from the opening roller into the second chute. There is further provided an arrangement for discharging fiber material from the second chute through an outlet thereof.

Abstract: An aerodynamic forming hood is provided for supplying a substantially uniform distribution of fibers in a downward laminar airstream for the deposition of the fibers on one or more forming surfaces. The hood is formed by a rectangular housing having opposed elongated downwardly diverging side walls and short downwardly diverging end walls. The housing has a smaller rectangular open top end through which a supply of fibers is released in an airstream which enters into the housing. The forming surfaces are disposed at a larger bottom forming end of the housing. The side walls and end walls in the top part of the hood are provided with elongated horizontal apertures.

Abstract: An apparatus for feeding a fiber batt to a fiber processing machine includes a feed roll; a feed table formed of a plurality of separately movable feed table segments each cooperating with the feed roll and defining therewith a nip through which the fiber batt passes; a plurality of springs each being affixed to the feed table segment to form integral components therewith; and an elongated holding element extending spaced from, and generally parallel to the feed roll. Each spring is affixed to the holding element. The feed table segments are individually movable away from the feed roll against a force of respective springs in response to thickness variations in the fiber batt as the fiber batt passes through the nip. There is further provided a support for rotatably supporting the holding element.

Abstract: In a mixing and opening device for pneumatically supplied flocculent fiber material, wherein fiber material is fed, by use of transport air and through a supply conduit, to a blow-in chute section of a hopper, wherein said blow-in chute section comprises a screen means for separating the fiber material from the transport air, and an air collecting chamber arranged behind said screen means for discharge of the transport air, and wherein, on the lower end of said hopper, the fiber material layered in said hopper can be fed via an intake means to an opening means, it is provided that the intake means comprises two intake rollers of different sizes.

Abstract: A device is provided for feeding fiber material into a textile machine, comprising a horizontal transport channel (10), a feeding chute (2) branching vertically downward from the transport channel (10), an air-collecting chamber (3) separated by an air-permeable intermediate wall (9) from the feeding chute (2) connected with the transport channel (10), the air collecting chamber (3) being provided with a closable blow-off opening for discharging the flow of transport air, and a fiber transport device (18) at the lower end of the feeding chute (2), wherein at least one blow-off opening (6) is arranged at the lower end of the air-collecting chamber, alternately suddenly blowing off or shutting off the flow of transport air (7).

Abstract: A feeding device for advancing a fiber lap to a fiber processing machine includes a driven a feed roll and a feed tray cooperating with the feed roll and defining a nip therewith for advancing the fiber lap in a feed direction by a clamping effect exerted to the fiber lap in the nip by the feed roll and the feed tray. The feed tray has a working face oriented towards the feed roll and an outer face being opposite the working face. There is further provided a support arrangement for supporting the feed tray for displacements towards and away from the feed roll and a force-exerting member connected to the feed tray for urging the working face of the feed tray towards the feed roll.

Abstract: An apparatus for forming a fiber lap from fiber tufts includes a fiber opener having an input formed of a fiber feeding mechanism and a series of sawtooth rolls through which the fiber material introduced by the fiber feeding mechanism consecutively passes in a direction of advance; a pneumatic fiber stripping device including a blowing device for directing an airstream toward the last sawtooth roll of the series as viewed in the direction of fiber advance; a hood having an inner face defining a chamber situated above and downstream of the last sawtooth roll for receiving fiber material carried from the last sawtooth roll by the air stream of the fiber stripping device; an air-pervious, continuously moving receiving member disposed in the chamber downstream of the last sawtooth roll; and a suction device facing the underside of the receiving member for generating an air stream passing through the receiving member for drawing fiber material in the chamber onto the upper face of the receiving member for forming

Abstract: An apparatus for producing fiber material or the like with a prescribable feed weight comprises a conveyor for delivering the fiber flock to a filling stack, which includes a vibrating wall extending in a vertical direction and a displaceable wall, a stationary delivery roller being arranged in a discharge region of the filling stack and a displaceable delivery roller being arranged opposite the stationary roller in the discharge region for controlling the thickness of the layer being deposited on a conveyor. The apparatus also includes a pressure sensor which is provided between the two delivery rollers, which pressure sensor provides signals for controlling the displacement of the displaceable delivery roller, the vibratory frequency for the vibrating wall of the stack and the displacement of the movable wall.

Abstract: A method of controlling the opening of a fiber feed at an opening machine like a cleaning machine or a card, in which an opening element is moved past a fiber feed for loosening and taking over of fibers; simultaneously attenuating the fiber feed; determining an output signal corresponding to the opening degree of the fiber feed; comparing the output signal with a reference or set signal for adjusting at least one opening parameter selected from a group consisting of three variables; operating the opening machine following the adjustment; checking the adjustment with a subsequent output signal after adjustment in order to provide further adjustment in the same sense or further adjustment in the contrary sense or no further adjustment of the selected parameters. A device for carrying out this method is also set forth.

Abstract: The method for mixing textile fibers utilizes a computer which is inputted with data concerning the characteristics of the fibers of the individual fiber bales to be processed as well as the data indicative of the desired characteristics of the board sliver or yarn which is to be manufactured from the fiber mixture obtained from the fibers of the individual bales. From the inputted data, the computer, in accordance with a predetermined computing algorithm, calculates a component distribution which comes close to the estimated component distribution and which satisfies the desired characteristics of the car sliver or yarn characteristics. The computer may also effect a correction of the computed component distribution taking into account boundary conditions with additional inputted information.

Abstract: The dosing method and apparatus meters predeterminate quantities of fiber flocks per unit of time by means of two feed devices arranged at the lower end of a flock chute and which form therebetween a conveying gap and an opening roll is preferably arranged beneath the feed devices.

Abstract: A continuous textile processing system and method are disclosed for producing a nonwoven web containing bleached cotton fibers in a single line system which includes a supply of fibers such as a bale opening device, a plurality of fiber delivery lines transport the fibers through a fiber opening process where the fibers are individualized and opened. The opened fibers are collected and fed to a blending system and then to web forming apparatus which forms a stable web. The web is processed in a continuous flow bleaching unit and then through a drier unit. The dried web is slit into a plurality of web strips or slivers which are fed to carding machines. The fibers are reformed into a web which is hydroentangled and dried. The web is then rolled and redied for other processing. The final nonwoven web consisting of bleached cotton fibers may be made into highly purified and absorbent wipes, pads, and other articles for medical, industrial, or domestic use.

Abstract: An apparatus for pneumatically delivering fiber tufts to a fiber processing machine includes a duct; a blower having a pressure side communicating with the duct for pneumatically driving fiber tufts therein in a stream M.sub.1 ; a branch conduit extending from the duct at a branch-off location situated downstream of the blower as viewed in a direction of flow of the stream M.sub.1 for separating a stream M.sub.3 from the stream M.sub.1, leaving a stream M.sub.2 to proceed in the duct downstream of the branch-off location; and a flow varying arrangement for changing a flow rate of the stream M.sub.3 in the branch conduit. The flow varying arrangement has a throttle mechanism situated in the branch conduit.

Abstract: In order to better accommodate the cleaning functions of a cleaning machine or those of a licker-in roll of a card to the different and increased requirements placed upon the cleaning action, a grid is provided for a cleaning machine. This grid is displaceable in at least one direction and grid bar modules or grid modules are provided in a predetermined sequence at the grid such that there can be appropriately influenced the cleaning results. The grid bar modules or grid modules are either fixedly mounted by, for instance, a screw or threaded bolt or are pivotable by means of an adjustment motor about the pivot axis of a pivotable shaft.

Abstract: A fiber tuft feeder includes a reserve chute; a feed roll supported in the reserve chute at an outlet thereof; a countersupport cooperating with the feed roll for defining therewith a nip through which the feed roll draws fiber tufts from the reserve chute; an opening roll supported immediately downstream of the nip for receiving fiber tufts from the nip; and a feed chute having an inlet connected to the outlet of the reserve chute. A relative motion of the feed roll and the countersupport toward and away from one another is permitted for varying the distance between the feed roll and the countersupport by the fiber tufts passing therebetween. Further, a spring is provided which resiliently urges the feed roll and the countersupport towards one another.

Abstract: A textile machine for processing textile material is provided having a control and drive unit and a feeding device for feeding textile material drawn from storage means allocated to the feeding device. The textile machine further includes a delivery device for delivering drawn-off textile material to a receiving container. The feeding device of the machine has an independent feed control unit associated therewith for independently controlling the operation of the feed apparatus in a non-dependent relationship with the processing machine control unit. With this arrangement, a continuous supply of textile material is supplied to the processing machine without the feed device control unit being dependent upon external commands. The feeding device control unit is completely responsible for the initiation and operation of the continuous textile material feeding process.

Abstract: An apparatus for mixing textile fiber tufts includes a plurality of serially disposed, generally vertically oriented hoppers; a pneumatic conveying system for advancing an air/tuft mixture to the hoppers for charging the hoppers with fiber tufts from the top; an exhaust-air chamber for receiving the conveying air stream from the air/tuft mixture; and a separator positioned between the exhaust-air chamber and the hoppers for allowing air to enter the exhaust-air chamber and for retaining fiber tufts in the hoppers. There are further provided a mixing chamber extending underneath the hoppers; an arrangement situated at the bottom of each hopper for delivering fiber tufts from the hoppers to the mixing chamber; and a transporting device situated in the mixing chamber for mechanically removing blended fiber tufts therefrom.

Abstract: In a device for feeding flocculent fiber material to processing machines, comprising an upper filling chute (1) arranged in a housing, at the lower end of which a feeding roller (8) is arranged cooperating with a beater or opening roller (9) from which a feeding chute (6) branches tangentially, the filling chute (1) and the feeding chute (6) having at least one at least partially air-permeable chute wall (2, 11), an additional pneumatic compacting being performed in the feeding chute by injecting a compacting air flow (C), and the flow of transport air (A) being discharged at the air-permeable chute wall (2) of the filling chute (1), it is provided that the flow of transport air (A) is discharged within the housing (7) into an exhaust air chute (3, 4) that is substantially parallel to the filling and feeding chute (1, 6) to an exhaust air connecting member (5) arranged downstream of the air-permeable chute wall (11), and that a partial air flow (B) of the flow of transport air (A) is supplied into the feeding

Abstract: In the case of a feeding and opening device for an open-end spinning arrangement having a tuft support, which follows a feeding table, it is provided that the tuft support is arranged stationarily and has a guiding surface which is situated opposite a feeding roller, extends approximately radially with respect to the opening roller and continues the clamping surface of the feeding table.

Abstract: A process of and a feeding device for feeding material in fibre form to a machine for preparing the material for subsequent spinning includes a material feeding bin through which the material is continuously fed to a substantially horizontal feeding table situated approximate a rotary preparing roll. The horizontal feeding table and the approximate rotary preparing roll define an air gap therebetween. A feeder roll is located above the feeding table which conveys the material toward the air gap, and the feeding table is supported to move in a substantially radial direction relative to the rotary preparing roll under the influence of data detected by a detecting device which detects the impurity level of the material at a point upstream of the feeding table relative to the direction of fibre flow.

Abstract: The present invention relates to a charger for feeding a carding machine with a nap of textile fibers as regularly as possible, characterized in that the receptacle apron (5) is continuously driven at variable speed controlled by the cell (7 ) for control of the thickness of the fiber mat (4) on the spiked apron (6), in that the receptacle (2) is also provided at its outlet, above the receptacle apron (5), with a screed (8) for regulation of the flow of fibers and in that a regulator drum (9) of variable speed coacts with the spiked apron (6) for the regulation of the mat of fibers carried thereon.

Abstract: A method and apparatus for a textile carding machine or drafting machine drawframe having an out-of-round or otherwise imperfect rotating member is based on detecting and analyzing the relative rotative positions of selected of the machines rotating members in relation to the moment to moment weight of the sliver output and developing therefrom a control signal for varying the speed of rotation of a rotative feeding member so as to vary the sliver weight to compensate for such imperfections.

Abstract: A textile apparatus for sorting fibers according to their length. A fiber opening device loosens and separates raw textile fibers transported by an air flow created by an air blower along an air path. A fiber extracting device extracts fibers having an average length greater than or equal to a preselected length from the air flow to produce usable long fibers and creates a separated air flow containing usable short fibers having an average fiber length less than the preselected length for subsequent processing. The long fibers may be compacted into a fiber batt. The usable short fibers may be compacted into a fibrous batt or may be passed through further fiber extracting devices. The apparatus may include a batt former which includes a plenum into which fibers are delivered by the air propeller or blower.

Abstract: A carding machine includes a feed roll, a feed table cooperating with the feed roll and defining a nip therewith; and a licker-in arranged for plucking exiting fiber material from the nip. The feed table has an end face which is oriented toward the licker-in and which carries a carding element having carding points projecting toward the licker-in. The carding points are formed by surface roughening or by the provision of a granular coating.

Abstract: The invention relates to a method of and apparatus for detecting unwanted material in the form of string or woven fabric in a flow of wanted fiber flocks or in a wanted fiber fleece. To this end, the flock flow is guided through a wave field which detects the presence of unwanted material in the flock flow so that the unwanted material can be separated out in a separator facility. The wave field can be an optical or acoustic wave field. The result obtained can, in addition to the separation of the unwanted material, be displayed in display means and/or recorded.

Abstract: In a carding apparatus for fibrous material, of the type in which the staple fibres are fed by a feed roller to an introduction roller of a carding machine and are subjected to preliminary opening and impurity removal, at least one carding unit is provided along the path between the introduction cylinder and the carding cylinder. The carding unit comprises a removal knife at its inlet, a guide blade for the fibres at its exit, and a carding surface extending therebetween. The carding unit is position-adjustable in directions circumferential and radial to the introduction cylinder. The knife and blade can be adjusted independently in a prevalently radial direction to the introduction cylinder. Preferably two individually adjustable carding units are provided. Between the carding unit or units and the carding cylinder there is provided a mixing and homogenizing carding cylinder.

Abstract: An apparatus and method for use in a cleaning process of textile fibers, and for use in conjunction with an opening roller. The apparatus includes a plurality of separating blades and guide elements which are spaced from the opening roller during the cleaning process. An assembly is provided for adjustably positioning a plurality of the separating blades and the guide elements during the cleaning process. The adjustment of the spacing of the separating blades and the guide elements from the opening roller can be accomplished remotely, either manually or by a motorized drive. A lever unit enables appropriate connection for effecting the various adjustments of the separating blades and the guide elements. The guide elements and the separating blades can be controlled and adjusted to suit the fibers to be processed.

Abstract: An apparatus for feeding fiber tufts to a fiber processing machine, including a fiber reserve device; an intake device drawing fiber tufts from the fiber reserve device; a fiber opening device adjoining the intake device and being arranged for receiving fiber tufts from the intake device; and a substantially horizontally oriented feed chute having an inlet connected to the outlet of the fiber reserve device. The fiber opening device advances fiber tufts into the inlet of the feed chute. The apparatus further includes a blower for introducing an air stream into the feed chute through the inlet thereof. The feed chute has an outlet for discharging fiber tufts therefrom and air outlet openings in the outlet zone for discharging air from the feed chute.

Abstract: A hopper feeder for blending and feeding textile fibers is disclosed which includes a chute (3) having a bottom conveyor belt (5) and an upwardly inclined spiked lattice (6) for reducing and opening the fibers, and inclined surface (4) is disposed in the chute and extends at least half the length of bottom conveyor belt (5), and receives textile fiber from an overhead reciprocating feeder. A freely rotatable roller (11) maintains a column of fibers in working relation with spiked lattice (6). A door (15) is provided below inclined surface (4) through which textile fiber may be fed directly.

Abstract: In a method and an apparatus for producing continuous slivers of improved uniformity, open-loop or closed-loop control of the production process is corrected in dependence upon the absolute air humidity measured near the installation. Long-term variations in sliver weight, which have been found to correlate with the absolute air humidity, are obviated.

Abstract: A suction tube extends in parallel between the licker-in and the feed plate of the co-direction feed device while a supply duct extends from the fiber lap delivery point to the suction tube. The suction tube and duct serve to remove dirt by suction and extraction at the delivery point where the fiber lap is delivered to the licker-in. The supply duct extends tangentially into the suction tube in order to maintain the entrained dirt particles in a helical flow in the tube.

Abstract: Individual fiber components are blended in accordance with the properties of a required intermediate product such as a card sliver or an end product such as a yarn. The fiber bales are combined into component groups and the fiber components in the groups are accurately supplied by metering devices to a blender in which the components are uniformly mixed. The product from the blender may be cleaned and thereafter carded into a sliver. The characteristics of the sliver, such as the color, fiber, fineness and quantity, are tested and adjustments made in the blending in dependence upon any deviation from preset values for the characteristics.

Abstract: A feeder for supplying fibers to an apparatus for forming a preliminary web having a holding shaft, to be supplied with fibers from above through a conveying line, and a distributor, which is disposed between the holding shaft and the conveyor line and serves to distribute the arriving stream of fibers over the width of the shaft. In order to ensure an undisturbed distribution of fibers, the distributor has at least two distributing lines, which open into the holding shaft and are connected to the conveying line in alternation by a change-over valve.

Abstract: A compact carding apparatus is disclosed which includes a pair of upstanding carding cylinders (B) and (C) carried in a self-standing manner on a base frame (260). Cylinder (C) is carried generally atop cylinder (B) by mounting plates (272, 274) which allow radial movement of cylinder (C) to yield to large lumps passing between the cylinders. A chute feed (10) and coiler (192) are uniquely combined with the compact arrangement in a minimum of space and in a mobile construction so as to permit movement of either the chute or coiler away for access to the apparatus. The compact upstanding arrangement provides for mounting of a number of carding elements mounted about the two cylinders which include stationary plates (40, 42, 44, 46) on cylinder (B); and revolving flat assembly (E) and stationary carding plates (96, 123) on cylinder (C). An extended fiber path (P) is defined about cylinders (B) and (C) along which a transferred fiber mass may be effectively exposed for carding on both of its sides.

Abstract: For the automatic compensation of density or thickness variations of fiber material at textile machines there is measured the density of a fiber material mass fed to a fiber feed device and the density of the fiber material mass at the textile machine outlet. The resultant measurement signals are delivered to a control for regulating the rotational speed of a feed roll of the fiber feed device in accordance with both measured density signals. The fiber feed device comprises the feed roll and a coacting feed plate. The feed roll, although rotatable, is spatially stationary and is pivotal from a starting position in the absence of the fiber mass into an operative position into contact with an abutment when there is present a fiber mass whose density variations are to be detected. By positionally fixing the feed plate during the detection operation different forces arise, depending upon the thickness or density of the fiber mass, in the nipping zone between the feed roll and the feed plate.

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: In a device for pneumatically feeding fiber to a machine such as a card or the like, the feed member (4) above the chute (2) is a tube of a circular or substantially circular cross section. The depth at the entrance of the chute (2) is less than the diameter of the tubular feed member (4).

Abstract: A card feed is disclosed in which, in order to prevent machine stoppages from causing the formation of permanent impressions in a fiber web delivered from a feed chute, a displaceable delivery roller is movable on the occasion of a machine stoppage by means of a pressure-operated reciprocating actuator from an operative position, in which the fiber web is being compressed between a pair of delivery rollers, into another position in which the fiber web is no longer compressed to an extent such that a permanent impression would be produced in it during the period of machine stoppage.