US3726072A - Apparatus and method for interrupting textile yarn forming operations - Google Patents

Apparatus and method for interrupting textile yarn forming operations Download PDF

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US3726072A
US3726072A US00201303A US3726072DA US3726072A US 3726072 A US3726072 A US 3726072A US 00201303 A US00201303 A US 00201303A US 3726072D A US3726072D A US 3726072DA US 3726072 A US3726072 A US 3726072A
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strand
attenuated
roving
air
drafting
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M Ford
C Lee
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Parks Cramer Co
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Parks Cramer Co
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/145—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements set on carriages travelling along the machines; Warning or safety devices pulled along the working unit by a band or the like
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/16—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material
    • D01H13/18—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material stopping supply only

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  • ABSTRACT [22] Filed: Nov. 23, 1971 Normal feeding of supply strands into drafting systems of a textile yarn forming machine, for delivery as at- [211 Appl 201303 tenuated strands, is interrupted in response to breakage of the corresponding attenuated strands. In- 52 US.
  • PATENTEB APR 1 01975 SHEET H []F 6 APPARATUS AND METHOD FOR INTERRUPTING TEXTILE YARN FORMING OPERATIONS The quality of an end textile product is, to a significant degree, determined by the quality of the textile yarn forming operation. For this reason, among others, effort has been expended heretofore toward optimizing the machines and methods involved in forming textile yarn.
  • the resultant improvements have included vacuum end collection systems for taking up attenuated strands issuing from drafting systems upon the yarn normally formed from the attenuated strand being broken, traveling pneumatic cleaners for traversing textile yarn forming machines and directing flowing air currents to clean the machines, and monitoring arrangements for responding to breakage of yarns by indicating the location of a broken yarn and thereby redirecting the efforts of operators.
  • interruption of supply strands occurs in response to impingement of air flowing from a traveling pneumatic cleaner against a strand interrupting means, whereby traveling pneumatic cleaners of generally known configurations are made of still greater utility through the apparatus and method of this invention.
  • the present invention proposes a method in which breakage of attenuated strands issuing from drafting systems of a textile yarn forming machine is accomplished in response to a detector moving with a traveling unit-such as a traveling pneumatic cleaner.
  • a traveling unit such as a traveling pneumatic cleaner.
  • a flow of air is redirected toward the corresponding drafting system, pivoting a strand interrupting member from a retracted position to a position intersecting a supply strand.
  • the supply strand then enters into a cusp defined by the pivoted member, to be trapped and restrained therein.
  • Yet a further object of this invention is to facilitate improved maintenance of textile yarn forming machines by identification of portions of the machines requiring preventive maintenance.
  • FIG. 1 is an end,elevation view, partially in section and partially broken away, of the combination of the present invention
  • FIG. 2 is a side elevation view of the apparatus of FIG. 1, taken generally as indicated by the arrow 2 in FIG. 1;
  • FIG; 3 is an enlarged elevation view of a portion of the apparatus of FIG. I, particularly illustrating a roving feed stop member in accordance with this invention
  • FIG. 4 is an enlarged elevation view of a portion of the structure of FIG. 3;
  • FIG. 5 is a view similar to FIG. 4, showing a roving feed stop member as moved to the position indicated in phantom lines in FIG. 3;
  • FIG. 6 is a perspective view of a pair of roving feed stop members in accordance with this invention and as incorporated in the structure of FIGS. 1 through 5;
  • FIG. 7 is a plan view, partially in section, taken generally along the line 7-7 in FIG.6;
  • FIG. 8 is an elevation view, partially in section, taken generally along the line 8--8 in FIG. 6;
  • FIG. 9 is an exploded perspective view of elements of the arrangement illustrated in FIG. 6;
  • FIG. 10 is a perspective view of one component of the apparatus illustrated in FIG. 9;
  • FIG. 11 is a perspective view, partially in' phantom, of a portion of the apparatus of FIGS. 1 and 2;
  • FIG. 12 is a view from below of a portion of the apparatus of FIG. 1, taken generally along the line 12ll2 in FIG. 2;
  • FIG. 13 is a plan view of a portion of the apparatus of FIG. 1, taken generally along the line 13l3 in FIG. 1.
  • the traveling unit is a traveling pneumatic cleaner substantially identical to the fourth embodiment disclosed in the U. S. Pat. No. 3,304,571 issued on Feb. 21, 1967. As disclosed in that patent, the traveling cleaner is supported for movement along a track 22 extending above the textile machine 21. As further disclosed in the Patent, the traveling cleaner 20 includes drive means for driving it in movement along a track so as to traverse one or more yarn forming machines 21 automaticaly and at predetermined intervals.
  • While such an arrangement is a conventional choice for a traveling pneumatic cleaner and a manner of supporting such a cleaner for traversing textile machines, it is to be understood that this choice has been made for puposes of illustration only.
  • the present invention contemplates that the traveling unit of this invention or the manner in which the unit is supported and arranged for traversing a textile machine may be changed in varying ways, including limitation of the path of travel of a unit to traverse a single machine only.
  • the traveling pneumatic cleaner 20 includes a fan impeller 24 and a fan drive motor (not shown) for driving the fan impeller in rotation.
  • the fan impeller 24 is enclosed within an air flow housing 25 which, in the preferred embodiment as illustrated, is divided into a suction air flow portion and a blowing air flow portion.
  • the blowing air flow portion of the fan housing 25 delivers flowing air through blowing sleeves 26, for the air flow to be directed against portions of the textile machine 21 for cleaning the textile machine.
  • the traveling cleaner 20 has four depending sleeves including two blowing cleaning sleeves 26 and two suction cleaning sleeves 28. As so arranged, the traveling cleaner 20 services both sides of the textile machine 21 during each traverse thereof.
  • the textile machine 21 includes a plurality of drafting systems arranged in series along the machine.
  • drafting systems include arrangements of paired rolls 30, 31, 32 through which textile material passes to be drafted or attenuated.
  • Each of the drafting systems normally receives at least one corresponding supply strand or roving R. While this invention is illustrated in connection with single roving drafting systems, it is contemplated as being equally applicable to double or mutliple roving systems.
  • packages 34 of prepared roving are suspended in a creel section of the textile machine 21 and strands are led from respective ones of the packages 34 downwardly to be passed through trumpets 35 and introduced into a nip defined between the back drafting rolls 32.
  • the textile material On passage through the drafting systems, the textile material is delivered from the front drafting rolls 30 as an attenuated strand S.
  • the attenuated strand has twist inserted thereinto in a generally known manner in order to form yarn.
  • textile material delivered through the delivery rolls 30 will enter a vacuum end collection nozzle 36, to be drawn into a waste collection chamber (not shown) adjacent one end of the textile machine 21.
  • vacuum end collection systems are generally known to persons familiar with textile yarn forming machines and have been the subject matter of previously granted patents.
  • a plurality of roving feed stop members generally indicated at 38 and corresponding in number to the number of drafting systems, with each of the stop members 38 being mounted on the textile machine 21 adjacent a corresponding one drafting system.
  • the stop members 38 are mounted for independent pivoting movement between a first position withdrawn from the corresponding supply strand R (as shown in FIG. 1 and in the full line position of FIG. 3) and a second position intersecting the supply strand (as shown in the phantom line position of FIG. 3).
  • each stop member 38 has roving engaging surfaces 39, 40 converging to define a cusp 41 into which the corresponding roving strand enters on movement of the stop member to the second position.
  • the roving engaging surfaces 39, 40 define the back or rear edges of a stop member target portion 42 serving an additional function of receiving impingement of flowing air which actuates the feed stop member 38.
  • pairs of feed stop members 38 serving adjacent pairs of drafting systems are mounted by means of an intermediate bracket member 44 arranged to be disposed on the weighting system or roll stand of the textile machine 21.
  • the strand interrupting means of this invention as provided by the stop members 38, may be readily adapted to a range of differing yarn forming machines while maintaining substantial standardization of the strand interrupting assembly.
  • the adjacent pair of stop members 38 (FIGS. 2 and 6-9) are mounted for pivotal movement about respective stub shaft portions 45 extending from the bracket 44 and each penetrated by a threaded fastener such as a bolt 46.
  • each of the stop members 38 is freely and independently pivotable between the first and second positions described hereinabove (and illustrated by full and phantom lines in FIGS. 3 and 6).
  • the stop members 38 preferably include flag portions 48 remote from the target portions 42 with a bore or hole 49 disposed medially of the length of the stop member receiving the stub shaft 45 and fastener 46.
  • the weight and balancing of the stop members 38 are arranged to be such that the stop member normally will rest in the first position described hereinabove but may be overbalanced to move toward the second position by a relatively small force imposed on the target portion 42 by impingement of an air flow thereagainst. It is contemplated that this action of the stop members 38 may be achieved when the member is either produced from light gauge sheet metal by conventional stamping and bending processes or produced from suitable plastics by injection molding or the like.
  • counter means may be mounted from the bracket 44 for cooperating with the roving feed stop members 38.
  • a counter means may incorporate a numbered wheel 50 mounted for rotation about the stub shaft portion 45.
  • the counter wheel 50 may be moved through a predetermined increment of rotation with each actuation of the corresponding feed stop member 38.
  • a detent member 54 and shield member 55 are also mounted on the stub shaft portion 45.
  • the detent member 54 has an inwardly projecting key 56 to lock the detent member against rotation relative to the stub shaft 45 and also has protruding detent surfaces 58 arranged to enter into dimples 59 formed in the face of the counter wheel 50 opposite the toothed face 51 (FIG.
  • the shield member 55 has a similar inwardly projecting key member 60, to preclude rotation of the shield member 55 relative to the stub shaft 45, and is of less than fully annular configuration. By being of less than fully annular configuration, the shield member 55 defines a limited window or area of arcuate movement for engagement of the pawl 52 with the toothed face of the counter wheel 50. The are of engagement is coordinated with the number of dimples 59 formed in the counter wheel 50 and with the application of numerical markings to the circumferential face thereof so as to establish a predetermined number of incremental posi trons.
  • the counter wheel 50 has 12 incremental positions, indicated by numbers from zero to 11.
  • a selected one number is exposed to the view of an operator walking an aisle adjacent to textile machine 21 (FIG. 6).
  • selected portions of the circumferential face of the counter wheel 50 may be given distinctive colors, such as a green color for the arcuate portion for the numerals zero to five, a white portion for the numerals six to nine and a red portion for the numerals l0 and 11.
  • the toothed face 51 of the counter wheel 50 is provided with a limited arcuate portion which is planar rather than toothed.
  • This interrupted portion of the toothed face corresponds to positioning of the highest number for view by an operator. That is, as applied in the'specific embodiment illustrated, rotation of the counter wheel 50 would be interrupted following movement of the number 11 to position to be viewed between the tabs 61, 62.
  • actuation of a corresponding roving feed stop member 38 for an excessive number of times does not bring about an incorrect lower number indication.
  • each of the roving feed stop members 38 includes a flag portion 48.
  • the flag portion 48 is arrangedto be disposed in a relatively retracted position while the roving feed stop member 38 is in the first position (solid lines in FIGS. 3 and 6).
  • the flag portion 48 is generally aligned with those portions of the textile machine 21 which impose weighting forces on the upper rolls of the drafting system roll pairs 30, 31, 32 (known generally as the weighting systems).
  • the flag portions 48 are not specifically brought into the view of an operator standing adjacent one end of the textile machine 21 and looking down the aisle between adjacent machines toward the other end of the machine.
  • the flag portion of 48 is disposed in an extended position (phantom lines in FIGS. 3 and 6) so as to be readily visible to an operator passing by an end of the machine 21.
  • the flag portions 48 of the stop members 38 function to direct an operator to a drafting system at which supply strand interruption has occurred. Where such redirection of operator labor is not desirable or is unnecessary, counter balancing of the target portion 42 of the feed stop member 38 may be accomplished by a greater concentration of weight into a smaller area, rather than by the provision of a flag portion.
  • the illustrated embodiment of the present invention contemplates that the strand interrupting means including the stop members 38 be selectively actuable by impingement of flowing air thereagainst and that such flowing air impingement be achieved by redirecting a portion of flowing air delivered by a traveling cleaner to flow toward a selected one strand interrupting means.
  • redirection of flow and control over actuation of the strand interrupting means are accomplished by monitoring means including detectors moving with the traveling cleaner along the series of drafting systems for detecting breakage of the attenuated strands S issuing from the drafting systems and means in responsive thereto for directing a portion of the flowing air delivered by the traveling cleaner to flow toward the selected one of the strand interrupting means so as to actuate the selected one feed stop member 38 upon detection of breakage of the attenuated strand issuing from the corresponding one of the drafting systems.
  • the monitoring means includes a detector head 70 depending from the traveling cleaner so as to be disposed between the blowing and suction sleeve 26, 28 (FIGS. 1, 2 and 13).
  • suspension of the detector head 70 is accomplished by means of a depending elongate mounting member 71.
  • a suitable detection device mounted within the head 70 is operatively connected with suitable circuitry for distinguishing between the presence and absence of attenuated strands S as the monitoring means moves along with the series of drafting systems.
  • suitable circuitry for distinguishing between the presence and absence of attenuated strands S as the monitoring means moves along with the series of drafting systems.
  • the monitoring means of the present combination has a particular predetermined field of view indicated generally at 74 within which attenuated strands S issuing from the drafting systems are viewed. During movement of the monitoring means along the series of drafting systems, the corresponding series of attenuated strands are thus monitored in succession.
  • the illustrated embodiment of this invention includes air flow directing means generally indicated at 75 moving with the traveling cleaner 20 and related to the monitoring means in a particular predetermined manner.
  • the air flow directing means 75 includes a valve casing 76 in the form of a hollow enclosure. Connected with the casing 76 and communicating with the interior thereof is an outlet nozzle 78 having a vertically elongated outlet slot 79 therein directed toward the textile machine 21. Mounted within the casing 76 is a valving member 80 (FIG.
  • valve casing 76 movable under impetus provided by a rotary solenoid 81 between a flow blocking position (solid lines in FIG. 11) and a flow permitting position (phanton lines in FIG. 11).
  • a suitable flexible conduit 82 and the depending member 71 the interior of the valve casing 76 operatively communicates with the fan housing 25 of the traveling cleaner 20 to receive air flowing under impetus provided by the fan impeller 24.
  • the rotary solenoid is energized with a pulse action upon a determination that an attenuated strand S is broken.
  • Such energization of the solenoid 81 may be confirmed by observing an electrical lamp 83 connected therewith and mounted in the casing 76.
  • the valving member 80 is momentarily moved from the flow blocking to the flow permitting position, passing through the nozzle 78 and outlet slot 79 a mass of flowing air impelled by the fan impeller 24. Due to a slight trailing relation (FIG.
  • FIG. 13 illustrates a circumstance in which the attenuated strand would have been broken at the location just traversed by the monitoring means and air flow directing means, with the corresponding stop member having been actuated in movement toward the second position. It is to be noted that the generally vertical extension of the opening 79 through which air flows toward .the strand interrupting means assures confinement of supply of relatively clean air.
  • Air in the mill room in- I quizd to flow through the traveling cleaner has lint and the like removed therefrom, to reduce the likelihood of stoppage of the air flow passages.
  • the large flow induced by the fan impeller 24, only a portion of which is redirected permits use of such a large volume or mass of air as the air bullet that the opening 79 through which the air flows may berelatively large and sufficient momentum to actuate the stop members 38 may be developed without requiring high velocities. Accordingly there is no need for compressors to produce high pressure air and the difficulties of maintenance and reliable operation caused by compressors are avoided.
  • each drafting system is monitored for breakage of the attenuated strand issuing therefrom as the traveling cleaner 20 moves along the track 22.
  • each drafting system will be scanned once in each eight to ten minutes.
  • the corresponding stop member 38 is actuated by direction of a blast of air toward the target portion 42 thereof.
  • the member 38 then falls toward the second position and intersects the supply strand R.
  • the supply strand is drawn into the cusp 41 formed by the converging surfaces 39, 40, so the supply strand is gripped and held adjacent the trumpet 35.
  • the pull of the drafting rolls 30, 31, 32 then separates the supply strand between the rear-most pair of rolls 32 and the trumpet 35.
  • the supply strand R continues to be held by the stop member 38 until an operator removes the roving from the cusp 41, resets the stop member 38 in the first position and rethreads roving into the drafting system in preparation to reinstituting the production of yarn at the drafting system.
  • the flag portion 48 of the stop member 38 comes into ready view when the stop member is moved to the second position, and thereby serves as a signal to an operator to accommodate either assignment of an operator to patrolling in cross alleys or the use of power driven carts to speed up movement of operators within the mill room.
  • vacuum end collection waste is reduced in that the supply strand R continues to feed for only a small portion of the time that the attenuated strand S may continue to be broken. With monitoring of attenuated strands every 8 minutes on an average, the supply strand will continue feeding only four minutes on an average after the attenuated strand is broken. With such reduction of vacuum end collection waste, the labor incidental to reworking such waste and the percentage of reprocessed stock included in the textile material being worked are reduced. Additionally, the longer that an attenuated strandis permitted to run into a vacuum end collection system, the greater the likelihood of a lapup of textile material about the drafting rolls.
  • Promptly stopping the supply strand will substantially reduce the number and severity of lap-ups and thereby facilitate reduction in non-reworkable waste and damage to components of the textile machine.
  • the efficiency of maintenance workers will be improved at the same time that the machine operating condition and efficiency are also improved.
  • Operation in accordance with this invention is compatible with three distinct approaches to mill operation; namely, the continuation of existing practices in which operators known as spinners patrol preassigned paths adjacent a number of machines, the reassignment of operators to patrol on a random basis by observing the flag portions 48 of stop members 38, and the elimination of substantial operator time through adoption of a no-spinner concept.
  • spinners patrol preassigned paths adjacent a number of machines
  • reassignment of operators to patrol on a random basis by observing the flag portions 48 of stop members 38 and the elimination of substantial operator time through adoption of a no-spinner concept.
  • the supply strand R would be permitted to remain inte rrupted during the interval of time from actuation of the corresponding stop member 38 until removal of formed packages from the textile machine.
  • the normal walking time of an operator assinged to spinning patrol duties would be eliminated.
  • the quality of yarn produced would be improved in that those defective positions most likely to result in the production of inferior yarn are also most likely to result in attenuated strand breakage early in the cycle of package forming. It is expected that a position which would otherwise repeatedly interrupt will be actuated only once during a cycle of package building with the total number of strand breakages thus being less than with an operator patrolling quite frequently.
  • yarn produced under the no-spinner concept is free of slubs and the like otherwise possibly resulting from an operators repair or piecing up of a broken strand.
  • apparatus for interrupting feeding of a supply strand upon breakage of a corresponding attenuated strand comprising:
  • strand interrupting means mounted adjacent each of said drafting systems and selectively actuable by impingement of flowing air thereagainst for engaging and restraining a corresponding supply strand and thereby for interrupting passage of the restrained supply strand into the corresponding drafting system
  • traveling cleaner means traversing the machine for inducing flow of air against portions thereof and for thereby cleaning the machine
  • Apparatus according to claim 1 further comprising counter means operatively connected with said strand interrupting means and responsive to actuation thereof for identifiably accumulating occurrences of supply strand interruption over an interval of time and for thereby facilitating identification of portions of the yarn forming machine requiring corrective maintenance.
  • said strand interrupting means comprises a plurality of members corresponding in number to the number of said drafting systems, each of said members being mounted for independent pivoting movement between a first position withdrawn from engagement with the corresponding supply strand and a second position intersecting and engaging said supply strand.
  • each of said pivoted members has strand engaging surfaces converging to define a cusp into which said corresponding supply strand enters on movement of said pivoted member to said second position.
  • each of said pivoted members has a flag portion arranged to be disposed in a retracted position while said pivoted member is in said first position and to be disposed in an extended position upon said pivoted member moving to said second position, said flag portion when in the extended position being readily visible to an operator passing by the yarn forming machine for thereby directing the operator to a drafting system at which supply strand interruption has occurred.
  • said traveling cleaner means comprises fan impeller means for inducing a flow of air and fan housing means enclosing said impeller means for directing the induced flow of air and further wherein said air flow directing means comprises conduit means operatively communicating with said fan housing means for withdrawing a flow of air therefrom and valve means disposed in said conduit means and operatively communicating with said detecting means for selectively opening said conduit means and permitting air flow therethrough.
  • apparatus for stopping feeding of a roving strand to a drafting system in the event of breakage of the attenuated strand issuing therefrom and for facilitating identification of drafting systems in need of maintenance, the apparatus comprising:
  • each of said stop members being mounted on said spinning machine adjacent a corresponding drafting system for independent pivoting movement between a first position withdrawn from engagement with the corresponding roving strand and a second position intersecting and engaging said corresponding roving strand and further having roving engaging surfaces converging to define a cusp into which said corresponding roving strand enters on movement of said stop member to said second position,
  • traveling unit means traversing said spinning machine for periodically passing each of said drafting systems
  • said movement responsive means comprises a plurality of individually actuable counter means corresponding in number to the number of said stop members, each of said counter means being mounted adjacent a corresponding one of said stop members and being responsive to movement thereof for identifying an occurrence of roving strand interruption by said one stop member.
  • each of said counter means comprises a counter wheel member mounted for rotation and ratchet means for rotating said counter wheel member through a predetermined arc of rotation upon each occurrence of roving strand interruption by said one stop member.
  • each of said counter means comprises signaling means for indicating to an operator the relative number of occurrences of roving strand interruption accumulated over said interval of time.
  • said travleing unit means comprises a pneumatic cleaner for cleaning said spining machine and further wherein said detecting means is mounted on and moves with said traveling cleaner for periodically passing each of said drafting systems.
  • apparatus for interrupting feeding of a roving strand upon breakage of a corresponding attenuated strand and for facilitating identification of portions of the spinning machine in need of maintenance, the apparatus comprising:
  • traveling cleaner means traversing the machine for inducing flow of air against portions thereof and for thereby cleaning the machine
  • apparatus for interrupting feeding of a supply strand upon breakage of a corresponding attenuated strand comprising:
  • strand interrupting means mounted adjacent each of said drafting systems and selectively actuable by impingement of flowing air thereagainst for engaging and restraining a corresponding supply strand and thereby for interrupting passage of the restrained supply strand into the corresponding drafting system
  • traveling cleaner means traversing the machine for directing flowing air against portions thereof and for thereby cleaning the machine
  • monitoring means for detecting breakage of the attenuated strands issuing from the drafting systems and including detector means moving with said traveling cleaner means along the series of drafting systems, and
  • a plurality of strand interrupting means each selectively actuable by impingement of flowing air thereagainst for engaging and restraining a corresponding supply strand and thereby for interrupting passage of the restrained supply strand into the corresponding drafting system
  • traveling cleaner means traversing the machine for inducing flow of air against portions thereof and for thereby cleaning the machine
  • Apparatus according to claim 14 further comprising counter means operatively connected with said strand interrupting means and responsive to actuation thereof for identifiably accumulating occurrences of supply strand interruption over an interval of time and for thereby facilitating identification of portions of the yarn forming machine requiring corrective maintenance.
  • said traveling cleaner means comprises fan impeller means for inducing a flow of air and fan housing means enclosing said impeller means for directing the induced flow of air and further wherein said air flow directing means comprises conduit means operatively communicating with said fan housing means for withdrawing a flow of air therefrom and valve means disposed in said conduit means and operatively communicating with said detecting means for selectively opening said conduit means and permitting air flow therethrough.
  • each of said stop members being mounted for independent pivoting movement between a first position withdrawn from engagement with a corresponding roving strand and a second position intersecting and engaging said corresponding roving strand and further having roving engaging surfaces converging to define a cusp into which said corresponding roving strand enters on movement of said stop member to said second position,
  • traveling unit means traversing the spinning machine for periodically passing each of the drafting systems
  • said movement responsive means comprises a plurality of cleaning the spinning machine and further wherein said detecting means is mounted on and moves with said traveling cleaner for periodically passing each of the drafting systems.
  • traveling cleaner means traversing the machine for inducing flow of air against portions thereof and for thereby cleaning the machine
  • responding to monitored breakage of an attenuated strand issuing from a drafting system by redirecting a portion of the induced flowing stream of air toward a corresponding one of a plurality of strand interrupting members each mounted adjacent one of the drafting systems and thereby actuating the selected one strand interrupting member to engage and restrain the corresponding supply strand, and interrupting passage of the restrained supply strand into the corresponding drafting system.
  • a method according to claim 21 further comprising the step of identifiably accummulating occurrences of supply strand interruption over an interval of time so as to facilitate identification of a portion of the yarn forming machine requiring corrective maintenace.
  • a method according to claim 21 wherein the actuation of the supply strand interrupting member comprises pivoting the selected member from a first position withdrawn from engagement with the corresponding supply strand to a second position intersecting and engaging the supply strand.
  • a method according to claim 23 wherein the step of restraining the supply strand comprises entrapping the supply strand within a cusp defined by strand engaging surfaces'of the pivoted member as the member moves to said second position.
  • a method according to claim 23 further comprising directing the attention of an operator to a drafting system at which supply strand interruption has 'occurred by moving a flag portion of the pivoted member at an extended position upon said pivoted member moving to said second position.
  • monitoring breakage of the attenuated strands issuing from the drafting systems, responding to monitored breakage of an attenuated strand issuing from a drafting system by pivoting a corresponding one of a plurality of strand interrupting members from a first position withdrawn from engagement with the corresponding roving strand toward a second position intersecting and engaging the corresponding roving strand,
  • a method according to claim 27 wherein the identifiable accumulation comprises counting each occurrence of movement of each pivoted member from the first position to the second position.
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Cited By (14)

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US3832839A (en) * 1973-10-24 1974-09-03 Parks Cramer Co Textile yarn spinning machine with roving interruption apparatus and slotted guides
US3899868A (en) * 1974-07-17 1975-08-19 Parks Cramer Co Control arrangement for yarn piecing apparatus
US3982708A (en) * 1971-10-04 1976-09-28 Imperial Chemical Industries Limited Apparatus and method for processing yarn
US4000603A (en) * 1975-02-27 1977-01-04 Parks-Cramer Company Textile yarn spinning machine with supply strand interruption
EP0026113A1 (en) * 1979-09-24 1981-04-01 Parks Cramer Company Textile yarn processing machines and method of reducing waste of supply strands in such machines
US4294065A (en) * 1978-04-26 1981-10-13 Parks-Cramer Company Method and apparatus for facilitating maintenance of spinning machine information system
US4294066A (en) * 1978-04-26 1981-10-13 Parks-Cramer Company Method and apparatus for displaying specific spinning machine operating conditions
US4506498A (en) * 1984-03-08 1985-03-26 Parks-Cramer Company Textile yarn spinning machine with supply strand interruption
US4510645A (en) * 1982-07-13 1985-04-16 Skf Kugellagerfabriken Gmbh Construction of draw frames for spinning machines
EP0156452A1 (en) * 1984-03-08 1985-10-02 Parks-Cramer Company Textile yarn spinning machine with supply strand interruption
US4763467A (en) * 1985-10-16 1988-08-16 Zinser Textilmaschinen Gmbh Method and means of controlling the stop of the feed of roving in a spinning machine
US4936086A (en) * 1990-01-25 1990-06-26 Flakt, Inc. Apparatus for stripping yarn ends from spindles
US5758482A (en) * 1996-06-04 1998-06-02 American Linc Corporation Sliver stop motion for spinning machine
USD879845S1 (en) * 2018-05-04 2020-03-31 Uster Technologies Ag Stopping device for roving on a yarn-spinning machine

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DE3139667C2 (de) * 1981-10-06 1983-12-29 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Fadenwächter mit einer Lichtquelle und einer lichtempfindlichen Zelle
JPS602075U (ja) * 1983-06-20 1985-01-09 トキコ株式会社 メカニカルスナツバ
JPH0392122U (es) * 1990-01-10 1991-09-19
CN104451989B (zh) * 2014-12-19 2017-05-03 江苏精亚环境科技有限公司 巡回清洁器牵伸定点吹嘴回转避让之拉线拖动机构

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US3486319A (en) * 1968-06-24 1969-12-30 Parks Cramer Co Apparatus and method for detecting,piecing-up and reporting ends down on spinning machines
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US3982708A (en) * 1971-10-04 1976-09-28 Imperial Chemical Industries Limited Apparatus and method for processing yarn
US3832839A (en) * 1973-10-24 1974-09-03 Parks Cramer Co Textile yarn spinning machine with roving interruption apparatus and slotted guides
US3899868A (en) * 1974-07-17 1975-08-19 Parks Cramer Co Control arrangement for yarn piecing apparatus
US4000603A (en) * 1975-02-27 1977-01-04 Parks-Cramer Company Textile yarn spinning machine with supply strand interruption
US4294065A (en) * 1978-04-26 1981-10-13 Parks-Cramer Company Method and apparatus for facilitating maintenance of spinning machine information system
US4294066A (en) * 1978-04-26 1981-10-13 Parks-Cramer Company Method and apparatus for displaying specific spinning machine operating conditions
EP0026113A1 (en) * 1979-09-24 1981-04-01 Parks Cramer Company Textile yarn processing machines and method of reducing waste of supply strands in such machines
US4263776A (en) * 1979-09-24 1981-04-28 Parks-Cramer Company Apparatus and method for interrupting textile yarn processing operations
US4510645A (en) * 1982-07-13 1985-04-16 Skf Kugellagerfabriken Gmbh Construction of draw frames for spinning machines
US4506498A (en) * 1984-03-08 1985-03-26 Parks-Cramer Company Textile yarn spinning machine with supply strand interruption
EP0156452A1 (en) * 1984-03-08 1985-10-02 Parks-Cramer Company Textile yarn spinning machine with supply strand interruption
US4581881A (en) * 1984-03-08 1986-04-15 Parks-Cramer Company Textile yarn spinning machine with improved supply strand interruption means
US4763467A (en) * 1985-10-16 1988-08-16 Zinser Textilmaschinen Gmbh Method and means of controlling the stop of the feed of roving in a spinning machine
US4936086A (en) * 1990-01-25 1990-06-26 Flakt, Inc. Apparatus for stripping yarn ends from spindles
US5758482A (en) * 1996-06-04 1998-06-02 American Linc Corporation Sliver stop motion for spinning machine
USD879845S1 (en) * 2018-05-04 2020-03-31 Uster Technologies Ag Stopping device for roving on a yarn-spinning machine

Also Published As

Publication number Publication date
DE2257323A1 (de) 1973-05-30
GB1414799A (en) 1975-11-19
JPS5733370B2 (es) 1982-07-16
BR7208228D0 (pt) 1973-09-25
JPS5535486B2 (es) 1980-09-13
JPS49108330A (es) 1974-10-15
NL7215233A (es) 1973-05-25
CH550264A (de) 1974-06-14
JPS49108329A (es) 1974-10-15
GB1414798A (en) 1975-11-19
ES409177A1 (es) 1976-03-16
IT973685B (it) 1974-06-10
ES437323A1 (es) 1977-05-16
AR195890A1 (es) 1973-11-15
CA966622A (en) 1975-04-29
JPS4861740A (es) 1973-08-29
JPS572813B2 (es) 1982-01-19
FR2160960A1 (es) 1973-07-06
FR2160960B1 (es) 1977-08-26

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