US3517497A - Thread guard with thread brake - Google Patents

Thread guard with thread brake Download PDF

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Publication number
US3517497A
US3517497A US739268A US3517497DA US3517497A US 3517497 A US3517497 A US 3517497A US 739268 A US739268 A US 739268A US 3517497D A US3517497D A US 3517497DA US 3517497 A US3517497 A US 3517497A
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US
United States
Prior art keywords
thread
brake
arm
reel
reels
Prior art date
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Expired - Lifetime
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US739268A
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English (en)
Inventor
Hans Rettenmund
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Hamel Spinn und Zwirnereimaschinen AG
Original Assignee
Carl Hamel Spinn und Zwirnereimaschinen AG
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D01H13/181—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 by stopping supply packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/036—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the combination of the detecting or sensing elements with other devices, e.g. stopping devices for material advancing or winding mechanism
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02H—WARPING, BEAMING OR LEASING
    • D02H13/00—Details of machines of the preceding groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the general object of my present invention is to provide means for positively preventing such entanglement or entrainment of threads after a rupture.
  • the brake assembly includes individual brakeshoes for the several reels. Since, however, the supply reels must not be stopped before the arresting of the spindle drive if over-stressing of as yet unbroken threads is to be avoided, I prefer in such a case to provide means for delaying the operation of the brake assembly beyond the actuation of the spindle drive.
  • the delay may be realized in a variety of ways, e.g. mechanically or electronically; a mechanical delay device according to my invention may include a lost-motion United States Patent 0 "ice assembly connecting an actuating element with a swingable arm carrying the brakeshoe.
  • FIG. 1 is a somewhat diagrammatical illustration of a bobbin-building mechanism, of the general type disclosed in the aforementioned prior Pat. No. 3,388,- 544, equipped with a multiple-thread monitor controlling a pair of reel brakes according to my invention;
  • FIG. 2 is a side view of a dual reel brake according to the invention, replacing the individual brakes shown in FIG. 1;
  • FIG. 3 is a top view of the brake assembly of FIG. 2, showing additional elements associated therewith.
  • two separate reels 2, 2 deliver a pair of threads 1, 1 to respective feeding units 4, 5 and 4', 5 which individually advance these threads, possibly at different rates, to a twisting station in which the threads are combined into a yarn 8 to be wound into a bobbin 11.
  • Thread 1' after passing around a deflecting bar 7, joins the thread 1 in an eyelet 6 from which the yarn 8 advances to a traveler ring 10 which circles the axis of bobbin 11 on an annular track 9 reciprocating in the direction of the bobbin axis (arrow A) as is well known per se.
  • the bobbin 11 has a core 21 mounted on a spindle 22 which is driven, via a transmission 23, from a motor 24 whose power supply has been diagrammatically indicated as a generator 25 in series with a pair of contacts 16. It will be understood that, in accordance with general practice, a multiplicity of bobbins 11 are built simultaneously on a bank of spindles 22 which are usually so closely spaced that, in the event of a rupture, a loose thread would be come entangled with the yarn of a neighboring bobbin if the affected spindle were not promptly arrested.
  • an individual thread guard shown to comprise a bell-crank lever 3, 3' pivoted at a respective fixed fulcrum 2 6, 26'.
  • each lever 3, 3 is biased for svn'nging in a counterclockvw'se direction as indicated by arrows B, B.
  • Such a swing is normally prevented by the tension of the associated thread 1 or 1 which passes through a loop on the free end of the nearly horizontal bell-crank arm, thus holding the vertical arm against a respective stop 17, 17'.
  • Extensions 12 and 12' terminate in cams 13, 13' which, upon a counterclockwise swing thereof as indicated by arrows C, C, lift the respective counterrollers 5, 5' of the associated feeding unit from the corresponding driven rollers 4 and 4 to halt the drawing of further lengths of thread 1, 1 from reels 2, 2.
  • Bar '14 in its illustrated normal position in which cams 13 and 13' are withdrawn from rollers 5 and 5', keeps closed the contacts 16 in the energizing circuit of motor 24'; naturally, this energizing circuit may include other switches, not shown, for starting and stopping the motor in the closed state of these contacts.
  • I provide a set of contacts 31 closable by the bar 16 in its off-normal position, these contacts being part of an operating circuit for a relay 32 which also includes a source of current 33 (here shown as a battery), a capacitor 34 and a choke 35.
  • Reactances 34 and 35 constitute, together with the resistance of relay 32, an aperiodic network which energizes the relay 32 after a predetermined interval designed to allow the spindle 2.2 to come to a halt upon de-energization of motor 24.
  • Relay 32 in attracting its armature, energizes two solenoids 36, 36' connected in parallel; each of these solenoids actuates a respective brake 37, 37 in the form of an arm swingable about a fulcrum 38 or 38' against the force of a restoring spring 39, 39, thereby urging a respective brakeshoe 40, 40 into contact with the periphery of the associated reel 2 or 2'.
  • reels 2, 2' and their associated brakes 37, 37 have been shown disposed at widely separated locations; in practice, as illustrated in FIGS. 2 and 3, these reels may be closely juxtaposed along with their associated brakes whose construction may be generally similar to that described hereinafter.
  • FIGS. 2 and 3 I have shown a pair of reels 116, 116" delivering threads 118 and 118' via eyelets 120 and 120' to a take-up mechanism which may be similar to that illustrated in the aforementioned Pat. No. 2,972,856, comprising a pair of transport rollers (not shown) embraced by the yarn 119 which is formed from the threads 118, 118' beyond upon their convergence at a deflecting roller 121.
  • Reels 116 and 116' have cores 114, 114' journaled on respective pins 112, 112' projecting from a common support 110, the latter forming part of a machine frame not further illustrated.
  • Journaled on shaft 132 for swinging movement about its axis are two brake arms 124 and 124' terminating in respective brakeshoes 126 and 126', the latter having contact surfaces provided with spikes 128 (as shown for the shoe 126 in FIG. 3) for positive engagement with the interstices of the filamentary reel surfaces.
  • a lever with two arms 136, 138 is rigid with shaft 132 and has its arm linked with an extension 130 of arm 124 by a contractile spring 142 tending to maintain this extension in contact with an abutment 140 on arm 136.
  • the free end of arm 138 is coupled to a lever 143 which has a fixed fulcrum 144 and is rigid with an arm 146, the free end of the latter arm being linked via a rod 148 with the free end of a lever 150 having a fixed fulcrum 151.
  • An extension 152 of lever 150 is engaged by the yarn 119; with a spring 153 biasing the lever 143 in a counterclockwise sense as viewed in FIG.
  • the linkage 136, 13-8, 143, 146, 148, 150*, 152 maintains its normal position (illustrated in full lines) only as long as the yarn 119 is intact. If the yarn breaks, this linkage is urged by the spring 153 toward an alternate position (dot-dash lines) in which the spring 142 is stressed to swing the brake arm 124 toward the reel 116; a weight 158, form ing a massive extension of arm 124, imparts sufiicient inertia to this brake arm to retard its swing until the associated spindle drive has come to a halt.
  • the second brake arm 124' is provided with a similar weight, not shown, and has an extension connected through a spring 142' to an arm 136' rigid with shaft 132. In this mamler the brake shoes 126, 126 move independently into engagement with the respective reel peripheries.
  • each reel brake may be individually actuatable by its own thread guard, with or without joint actuation in the event of simultaneous rupture of both threads in the twisted yarn; for this purpose, the threads 118, 118 may pass next to each other along the path 119 and may be separately monitored by respective feelers 152 before being intertwined at a point further downstream.
  • a plant comprising a support for a rotatable thread-supplying reel, feed means for continuously drawing a thread from said reel and monitoring means positioned for engagement with said thread to sense a rupture thereof, the combination therewith of brake means positioned adjacent said support and coupled with said monitoring means for arresting said reel in response to such rupture, said brake means comprising an arm swingable in a generally axial plane of said reel and provided with a thread-engaging shoe positioned to bear upon the reel periphery.
  • a plant comprising a support for a rotatable thread-supplying reel, feed means for continuously drawing a thread from said reel and monitoring means positioned for engagement with said thread to sense a rupture thereof, the combination therewith of brake means positioned adjacent said support and coupled with said monitoring means for arresting said reel in response to such rupture, take-up means for said thread including a rotatable spindle, said feed means including drive means for rotating said spindle, said monitoring means being coupled with said drive means for deactivating same upon the occurrence of a rupture; and delay means interposed between said monitoring means and said brake means for retarding actuation of the latter beyond deactivation of said drive means.
  • said lost-motion assembly comprises a swingable arm, an actuating element connected with said monitoring means for displacement thereby, and a resilient linkage between said element and said arm, said brake means including a shoe carried on said arm.
  • said linkage comprises a spring anchored to an end of said arm remote from said shoe, said arm being provided with a massive extension in the vicinity of said shoe.
  • said brake means comprises an arm swingable in a generally axial plane of said reel and provided with a shoe positioned to bear upon the reel periphery.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
US739268A 1967-06-27 1968-06-24 Thread guard with thread brake Expired - Lifetime US3517497A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0063122 1967-06-27

Publications (1)

Publication Number Publication Date
US3517497A true US3517497A (en) 1970-06-30

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US739268A Expired - Lifetime US3517497A (en) 1967-06-27 1968-06-24 Thread guard with thread brake

Country Status (8)

Country Link
US (1) US3517497A (de)
AT (1) AT306587B (de)
BE (1) BE717058A (de)
CH (1) CH463337A (de)
DE (1) DE1685671A1 (de)
ES (1) ES354399A1 (de)
FR (1) FR1571095A (de)
GB (1) GB1175811A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805507A (en) * 1971-06-22 1974-04-23 Palitex Project Co Gmbh Apparatus for stopping spindle assemblies of a textile yarn processing machine in a predetermined position
US3995418A (en) * 1974-08-12 1976-12-07 Verdol S.A. Double twist spindle yarn stop device
US4280321A (en) * 1978-04-24 1981-07-28 F.Lli Marzoli & C. S.P.A. Safety spindle-stopping device for a spinning frame
US4727713A (en) * 1986-02-28 1988-03-01 Zinser Textilmaschinen Gmbh Roving or sliver clamping device for a drafting frame or a spinning machine
WO2018073119A1 (en) 2016-10-19 2018-04-26 Amsler Tex Ag Method and device for the detecting failure of supply during the production of complex core yarns
CN109137174A (zh) * 2018-08-31 2019-01-04 芜湖富春染织股份有限公司 一种棉纱纱线捻卷装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6026137Y2 (ja) * 1982-09-28 1985-08-06 村田機械株式会社 合撚糸機における糸切断装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US303210A (en) * 1884-08-05 John boyd
US2599256A (en) * 1950-05-19 1952-06-03 Courtaulds Ltd Yarn twisting machine
US2786324A (en) * 1953-11-16 1957-03-26 Universal Winding Co Two-for-one stop motion
US2840979A (en) * 1955-04-29 1958-07-01 Deering Milliken Res Corp Yarn twisting apparatus
US2930182A (en) * 1960-03-29 Automatic stopping device for stopping thread twisting machines
US3251562A (en) * 1963-06-10 1966-05-17 Johns Manville Apparatus for producing strand packages of uniform length
US3262180A (en) * 1965-05-12 1966-07-26 Scragg & Sons Device for detecting yarn breakage
US3372848A (en) * 1965-10-24 1968-03-12 Leesona Corp Feed roll assembly separable in response to thread depletion
US3388544A (en) * 1966-04-06 1968-06-18 Hamel Ag Multiple-thread monitor for bobbinbuilding mechanism and the like

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US303210A (en) * 1884-08-05 John boyd
US2930182A (en) * 1960-03-29 Automatic stopping device for stopping thread twisting machines
US2599256A (en) * 1950-05-19 1952-06-03 Courtaulds Ltd Yarn twisting machine
US2786324A (en) * 1953-11-16 1957-03-26 Universal Winding Co Two-for-one stop motion
US2840979A (en) * 1955-04-29 1958-07-01 Deering Milliken Res Corp Yarn twisting apparatus
US3251562A (en) * 1963-06-10 1966-05-17 Johns Manville Apparatus for producing strand packages of uniform length
US3262180A (en) * 1965-05-12 1966-07-26 Scragg & Sons Device for detecting yarn breakage
US3372848A (en) * 1965-10-24 1968-03-12 Leesona Corp Feed roll assembly separable in response to thread depletion
US3388544A (en) * 1966-04-06 1968-06-18 Hamel Ag Multiple-thread monitor for bobbinbuilding mechanism and the like

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805507A (en) * 1971-06-22 1974-04-23 Palitex Project Co Gmbh Apparatus for stopping spindle assemblies of a textile yarn processing machine in a predetermined position
US3995418A (en) * 1974-08-12 1976-12-07 Verdol S.A. Double twist spindle yarn stop device
US4280321A (en) * 1978-04-24 1981-07-28 F.Lli Marzoli & C. S.P.A. Safety spindle-stopping device for a spinning frame
US4727713A (en) * 1986-02-28 1988-03-01 Zinser Textilmaschinen Gmbh Roving or sliver clamping device for a drafting frame or a spinning machine
WO2018073119A1 (en) 2016-10-19 2018-04-26 Amsler Tex Ag Method and device for the detecting failure of supply during the production of complex core yarns
CN109137174A (zh) * 2018-08-31 2019-01-04 芜湖富春染织股份有限公司 一种棉纱纱线捻卷装置

Also Published As

Publication number Publication date
DE1685671A1 (de) 1971-09-02
ES354399A1 (es) 1969-11-01
GB1175811A (en) 1969-12-23
CH463337A (de) 1968-09-30
BE717058A (de) 1968-12-02
AT306587B (de) 1973-04-10
FR1571095A (de) 1969-06-13

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