US3807161A - Roving stop - Google Patents

Roving stop Download PDF

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Publication number
US3807161A
US3807161A US00038447A US3844770A US3807161A US 3807161 A US3807161 A US 3807161A US 00038447 A US00038447 A US 00038447A US 3844770 A US3844770 A US 3844770A US 3807161 A US3807161 A US 3807161A
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US
United States
Prior art keywords
roving
roll
drafting
rolls
flag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00038447A
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English (en)
Inventor
R Ingham
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.)
Milliken Research Corp
Original Assignee
Milliken Research Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Milliken Research Corp filed Critical Milliken Research Corp
Priority to US00038447A priority Critical patent/US3807161A/en
Priority to CA111,961A priority patent/CA946574A/en
Priority to NL7106684A priority patent/NL7106684A/xx
Priority to BE767250A priority patent/BE767250A/xx
Priority to CH729971A priority patent/CH550870A/fr
Priority to FR7118026A priority patent/FR2090115B1/fr
Priority to LU63180D priority patent/LU63180A1/xx
Priority to DE2124730A priority patent/DE2124730C3/de
Priority to GB1561071*[A priority patent/GB1347516A/en
Application granted granted Critical
Publication of US3807161A publication Critical patent/US3807161A/en
Priority to JP1975116695U priority patent/JPS5819182Y2/ja
Anticipated expiration legal-status Critical
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
    • D01H13/182—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 raising or lifting of one of the drafting cylinders, e.g. by removing of the loading means
    • 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

Definitions

  • NGHAM,JR BY ATTORNEY ROVING STOP This invention relates generally to drafting systems for spinning frames and in particular to the prevention of lap damage to a drafting system and yarn waste when a yarn break occurs between the ring rail and the front rolls of the drafting system.
  • Another object of the invention is to provide a lap damage preventer for a'drafting system which will stop the delivery of the roving or sliver being supplied to a drafting system when a break occurs in the fiber'being drafted and/or spun.
  • a still further object of the invention is to provide a visual signal to the operator whenever a yarn end breaks.
  • FIG. 1 is a schematic perspective view of a portion of a spinning room which employs an overhead traveling cleaner
  • FIG. 2 is a blown-up view of the overhead traveling cleaner positioned relative to a portion of a spinning frame
  • FIG. 3 isa cross-section view of one drafting position of a spinning frame showing the yarn break detector and roving stop in the inoperative position;
  • FIG. 4 is a view similar to FIG..3 except that the roving stop has been actuated
  • FIG. 5 is a blown-up perspective view of the roving stop per se
  • FIG. 6 is a blown-up section view of a portion of the roving stop flag carrier.
  • FIGS. 79 correspond respectively to FIGS. ,3-5 showing a modified version of the rovingstop.
  • FIGS. 1 and 2 the new and improved roving stopis used in conse is not part of the invention and is generally similar to that shown in U. S. Pat. No. 3,372,425.
  • Each of the spinning frames 14 has a conventional drafting system 19 with a roving or sliver of staple fibers 11 being delivered into the nip of upper and lower rear drafting rolls 20 and 22, middle drafting rolls 24 and 26, front drafting rolls 28 and 30 to a ring and traveler 32 to form yarn Y by placing twist therein between the ring and traveler and the nip of front drafting rolls 28 and 30.
  • top drafting rolls 20 and 28 are rubber covered rolls while intermediate top drafting roll 24 is knurled.
  • Bottom front and rear drafting rolls 30 and 22 are fluted rolls while the middle bottom roll is knurled.
  • 3,3 86,1 36, upper and lower apron clearing and roll engaging members (not shown) are connected to cradle 38 and are supported within the aprons 34 and 36 and at one end have a concave surface engaging the rolls to clean the peripheral surface thereof and at the other end an apron reversing nose portion.
  • Cradle 38 which has two upstanding wall members 40, one of which is shown, has a conventional roving shelf (not shown) .secured therebetween to guide the roving into the nip of the drafting rolls and between the aprons 34 and 36. This prevents the roving from falling down between the middle and back rolls, thereby preventing a lap updue to improper feed of the roving into the drafting system 18.
  • the traveling cleaner 10 has an electronic scanner 42 depending therefrom which looks at the yarn endat each spindle position and generates a signal upon the detection of the absence of yarn between the front drafting rollsand the ring and traveler.
  • This scanner per se is not part of the invention and can be any of a number of commerciallyjavailable scanners.
  • an air nozzle 44 connected to the traveling cleaner I0 is an air nozzle 44 connected to a source of air under-pressure (not shown) controlled by suitable means such as a solenoid valve.
  • the roving stop 45 is shown indetail andbasically consists of a semi-cylindrical portion46 which encircles the bottom rear drafting.roll ,22, an upstanding arm portion 48 molded to the semicylindrical portion 46 and a flag 50 pivotally connected at 52 to the projection 54.
  • the bottom of the flag 50 is hollowand has a detent 56 projecting out'wardlytherefrom andbiased tosuch position by -a spring 58.
  • the and'the arm 48 aremade from a readilymoldable material whichhas good-stability and .wear characteristics.
  • the semi-cylindrical portion 46 of the roving stop 45 has a diameter slightly less than the diameter of the roll to provide a good fit.
  • FIGS. 3 and 4 the operation of the roving stop will be explained.
  • the roving stop 45 is shown in the inoperative positionin that the detent is contacting the roll neck 60 of the top rear roll 20 preventing the semi-circular portion 46, telescoped over the lower bottom roll 22, from rotating counterclockwise with the bottom roll.
  • the traveling cleaner l riding on the track 12 will pass each spindle position of each spinning frame being cleaned. As it passes each spindle, the electronic scanner will scan the yarn to determine whether the yarn end has come down. If the end has i come down, such as shown in FIG. 4, the electronic scanner, when it detects the break, will generate a signal to actuate a solenoid valve to momentarily supply air under pressure to the air nozzle 44.
  • the air nozzle 44 is so located that the air from the nozzle 44 will impinge the flag 50 pivoting same clockwise against the action of the spring 58 and detent 56.
  • the semi-circular portion 46 of the roving stop 45 will rotate with the roll 22 to rotate the leading edge 62 of the portion 46 into the nip of the rolls and 22. This lifts the roll 20 off the driving surfaceof roll 22 and stops the supply of roving 11 into the nip. The supply of roving will then be stopped until an operator or spinner comes along and resets the roving stop and pieces up the yarn end.
  • FIGS. 7-9 The modification of FIGS. 7-9 is generally similar to that of FIGS. 1-6 except the roving stop has been modified.
  • the parts which are the same as the parts in FIGS. 1-6 have been given the same reference number.
  • the roving stop per se in FIG. 9 it has the semi-circular portion 46 and resilient arm 64 molded thereto with arms 66 and 68 projecting outwardly therefrom to which the flag 70 is pivoted thereto at 72.
  • the arm 64 also has a flange 74 connected thereto which limits the counterclockwise motion of the flag 70.
  • the lower tip of the flag 70 has a detent portion 76 which engages the roll neck 60 to prevent rotation of the roving stop with the roll 22.
  • the flag 70 will be impinged by an air jet from the nozzle 44. This will cause the arm 64 to bend slightly and allow the flag to be clockwise to allow the detent to clear the roll neck so that the roving stop can rotate with the roll to insert the portion 62 thereof into the nip of rolls 20 and 22 to stop the supply of roving thereto.
  • a drafting system comprising: a plurality of pairs of rolls in nip forming engagement, means supplying fibers to be drafted to said drafting system, roving stop means operably associated with at least one roll of said pairs of rolls, said roving stop means including a flag means and means to actuate said flag means to allow said roving stop means to stop the supply of roving into said drafting system, said roving stop means including a partially circular portion encircling a portion of said one roll and said flag means engaging the other roll in nip forming engagement with said one roll to prevent said circular portion from rotating with said roll.
  • a system to spin fibers comprising: a spinning frame, a traveling cleaner supported above said spinning frame, said spinning frame having a plurality of drafting systems, each of said drafting systems having a plurality of rolls in nip forming engagement, each of said drafting systems having a roving stop means operably associated therewith, electronic scanning means operably associated with said traveling cleaner to detect the breakage of yarn coming from any of said drafting systems and means operably associated with said traveling cleaner to actuate said roving stop means upon detection of a yarn break by said means to detect a yarn break to cut off the supply of roving into the drafting system whereat the yarn break was detected,
  • said roving stop means including a circular portion encircling a portion of one of said rolls in each drafting system and a flag means projecting upwardly therefrom.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
US00038447A 1970-05-18 1970-05-18 Roving stop Expired - Lifetime US3807161A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US00038447A US3807161A (en) 1970-05-18 1970-05-18 Roving stop
CA111,961A CA946574A (en) 1970-05-18 1971-05-03 Roving stop
NL7106684A NL7106684A (cs) 1970-05-18 1971-05-14
CH729971A CH550870A (fr) 1970-05-18 1971-05-17 Installation de filage.
BE767250A BE767250A (fr) 1970-05-18 1971-05-17 Casse-meche perfectionne pour metier a filer
FR7118026A FR2090115B1 (cs) 1970-05-18 1971-05-18
LU63180D LU63180A1 (cs) 1970-05-18 1971-05-18
DE2124730A DE2124730C3 (de) 1970-05-18 1971-05-18 Vorrichtung zum Unterbrechen der Fadenzufuhr bei Streckwerken von Spinnmaschinen
GB1561071*[A GB1347516A (en) 1970-05-18 1971-05-18 Roving stop
JP1975116695U JPS5819182Y2 (ja) 1970-05-18 1975-08-26 ドラフトソウチニオケル イトテイシソウチ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00038447A US3807161A (en) 1970-05-18 1970-05-18 Roving stop

Publications (1)

Publication Number Publication Date
US3807161A true US3807161A (en) 1974-04-30

Family

ID=21900006

Family Applications (1)

Application Number Title Priority Date Filing Date
US00038447A Expired - Lifetime US3807161A (en) 1970-05-18 1970-05-18 Roving stop

Country Status (10)

Country Link
US (1) US3807161A (cs)
JP (1) JPS5819182Y2 (cs)
BE (1) BE767250A (cs)
CA (1) CA946574A (cs)
CH (1) CH550870A (cs)
DE (1) DE2124730C3 (cs)
FR (1) FR2090115B1 (cs)
GB (1) GB1347516A (cs)
LU (1) LU63180A1 (cs)
NL (1) NL7106684A (cs)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326371A (en) * 1980-03-03 1982-04-27 Parks-Cramer Company Supply strand interruption mechanism for textile yarn spinning machine
DE3606609A1 (de) * 1986-02-28 1987-09-03 Zinser Textilmaschinen Gmbh Luntenstopp-vorrichtung am streckwerk einer spinnmaschine
US4951357A (en) * 1988-09-03 1990-08-28 Zinser Textilmaschinen Gmbh Stop motion apparatus for a roving drafting device of a textile machine
USD879845S1 (en) * 2018-05-04 2020-03-31 Uster Technologies Ag Stopping device for roving on a yarn-spinning machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048481C3 (de) * 1980-12-22 1992-02-20 Schurr Stahlecker & Grill Vorrichtung zum unterbrechen der zufuhr eines vorgarns an streckwerken einer spinnmaschine
DE3137346C2 (de) * 1981-09-19 1984-10-18 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Spinnereimaschine mit Streckwerken
DE3318925A1 (de) * 1983-05-25 1984-11-29 Stahlecker, Fritz, 7347 Bad Überkingen Vorrichtung zum unterbrechen der zufuhr eines vorgarns an einem streckwerk
DE3927936A1 (de) * 1988-09-29 1990-04-05 Fehrer Ernst Vorrichtung zum herstellen eines garnes

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612469A (en) * 1926-01-28 1926-12-28 Draper Corp Stop motion for twisters
US1973552A (en) * 1932-01-20 1934-09-11 Ludlow Mfg Associates Spinning frame
US3063229A (en) * 1960-08-12 1962-11-13 Comptoir De L Ind Cotonniere Stop motion for textile materials
US3369357A (en) * 1966-06-08 1968-02-20 Fontellas Manuel Prat Device for automatically separating a pair of yarn guiding rollers
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
US3498039A (en) * 1968-07-29 1970-03-03 Leesona Corp Control system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR952330A (fr) * 1947-08-11 1949-11-15 Coupe mèche pour métier continu à filer ou à retordre

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612469A (en) * 1926-01-28 1926-12-28 Draper Corp Stop motion for twisters
US1973552A (en) * 1932-01-20 1934-09-11 Ludlow Mfg Associates Spinning frame
US3063229A (en) * 1960-08-12 1962-11-13 Comptoir De L Ind Cotonniere Stop motion for textile materials
US3369357A (en) * 1966-06-08 1968-02-20 Fontellas Manuel Prat Device for automatically separating a pair of yarn guiding rollers
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
US3498039A (en) * 1968-07-29 1970-03-03 Leesona Corp Control system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326371A (en) * 1980-03-03 1982-04-27 Parks-Cramer Company Supply strand interruption mechanism for textile yarn spinning machine
DE3606609A1 (de) * 1986-02-28 1987-09-03 Zinser Textilmaschinen Gmbh Luntenstopp-vorrichtung am streckwerk einer spinnmaschine
US4951357A (en) * 1988-09-03 1990-08-28 Zinser Textilmaschinen Gmbh Stop motion apparatus for a roving drafting device of a textile 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
JPS5137119U (cs) 1976-03-19
GB1347516A (en) 1974-02-27
DE2124730B2 (de) 1973-11-22
DE2124730C3 (de) 1974-06-20
JPS5819182Y2 (ja) 1983-04-19
FR2090115A1 (cs) 1972-01-14
NL7106684A (cs) 1971-11-22
FR2090115B1 (cs) 1975-04-18
BE767250A (fr) 1971-10-18
CH550870A (fr) 1974-06-28
LU63180A1 (cs) 1972-03-03
DE2124730A1 (de) 1971-12-02
CA946574A (en) 1974-05-07

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