US3814140A - Cutting device for looms - Google Patents

Cutting device for looms Download PDF

Info

Publication number
US3814140A
US3814140A US00264919A US26491972A US3814140A US 3814140 A US3814140 A US 3814140A US 00264919 A US00264919 A US 00264919A US 26491972 A US26491972 A US 26491972A US 3814140 A US3814140 A US 3814140A
Authority
US
United States
Prior art keywords
blade
grippers
cutting
shed
counter
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
US00264919A
Other languages
English (en)
Inventor
G Serturini
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.)
Promatech SpA
Original Assignee
SOMET Societa Meccanica Tessile SpA
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 SOMET Societa Meccanica Tessile SpA filed Critical SOMET Societa Meccanica Tessile SpA
Application granted granted Critical
Publication of US3814140A publication Critical patent/US3814140A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/125—Weft holding devices
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/70—Devices for cutting weft threads

Definitions

  • ABSTRACT A device to perform the cutting of weft threads in shuttleless looms provided with grippers for carrying the weft threads, in which a cutting blade arranged substantially perpendicular to the weft threads cooperates with a counter blade in respect to which it is operated under the control of cam means.
  • the blade is perpendicular and in a second embodiment it is parallel to the working path of the grippers.
  • the present invention now concerns a device for cutting wefts, which operates under positive control and reliably and with all types or counts of weft threads and assuring in a definitely improved way that the weft thread is engaged on the carrier gripper provided for carrying it into the shed.
  • a cutting blade which is provided substantially perpendicular to the weft thread,cuts said thread in cooperation with a counter-blade, and is operated with respect to the latter under the control of cam means.
  • the counter-blade is provided at the end of a hooked element guiding and retaining the weft thread, whichis supported by a lever swinging around an axis parallel to the working path of the grippers, while the means which support the cutting blade, and which swing aroundan axis perpendicular to the working path of thegrippers, are associated with said lever.
  • FIGS. 1 and 2 taken frontally with respect to said device;
  • FIGS. 4 and 5 are views similar to those shown in FIGS. 1 and 2 which show a different embodiment of the device according to the invention.
  • the device 1 according to the invention is mounted on the feeding side of a shuttleless loom for the continuous feeding of the weft, in replacement of a hooked lever of an already known type, for guiding and retaining weft threads and for cutting the same in the conventional way.
  • the device l' is provided in proximity to the inlet of the shed, after the selecting devices 2 and the presenting devices 3.
  • the device consists of a lever body 4 which is pivotally connected with the fixed structure of the loom, through a shaft 5, and which ends in a double bellcrank arm 6, provided in an essentially horizontal position, from which, in an essentially vertical position and perpendicular to the working path of the grippers as well as to the weft threads, a guiding and threads retaining hooked element 7 projects downwards, ending in a counter-blade 7.
  • the above described part of the device is mounted, in a known way, for swinging in a vertical plane around shaft 5 under the control of cam means.
  • the end of lever 4 bears a cam follower 8 which co-operates with a front cam 9 of the cam-group 10 cf the device.
  • a shaft 11 rotates in a seat in the central part of the lever body 4.'Said shaft is connected at one end with a roller cam follower 12 by means of a stirrup l3 bearing a seat 14 provided for arettrn spring 15 acting against the body 4.-At the other end of shaft 11 is connected a double bell-crank lever 16, mounted substantially parallel to the arm 6, to the end of said lever being pivotally connected the blade 17.
  • the latter is mounted by means of pin 18 in a hole 19 of the lever 16, it being possible to adjust it, and is operated by a blade spring 20 which pushes the cutting edge 17' of blade 17 into close contactwith the hooked counter-blade element 7, 7
  • roller cam follower 12 mounted on stirrup 13 by means of a swinging bearing, is engaged by a front cam 21 which is one of-group 10 and is provided in front of front cam 9, both cams moving independently from one another, since each of them responds in its own way to the general movement of the loom.
  • the hooked element 7, as it is clearly shown in FIGS. 1 and 2, has a part of it formed into a recess to guide and retain the thread. Said part is rounded, while the cutting edge of counter-blade 7 is provided only at the end of the element, beyond its recess.
  • the hooked element 7 is provided in a different position, it being still substantially vertical, but on one side perpendicular to the path of the weft thread and on the other side parallel to the working path of the grippers.
  • shaft 11 carries at its end close to the cam group 10 a small support 22 provided with a locking screw 23 for a cam follower 24 and a return spring 25 operating between the body 4, and the small support 22.
  • the double bell-crank lever 16 carries at one end a blade 26 provided in the same position as the hooked element 7 for co-operating in cutting with the cutter side of said hooked element.
  • cam 27 which belongs to.
  • the lowered blade with its cutting edge engages the weft thread F and cuts it, in the most safe manner, against the endpart of element 7 on which counter-blade 7 is provided,.said blade co-op erating with the counter-blade.
  • gripper P move into a sufficiently forward-position as to obtain the safe insertion of thread F into the holding means of said gripper. Therefore, the cut is carried out only after said insertion is performed.
  • the insertion is guaranteed by the fact that thread F, before it is cut, is supported by a rounded surface of element 7, so that there is no possibility that the cut is carried out before or at the same time as the insertion.
  • weft thread cutting means oscillable about an axis parallel to the path of the grippers between a rest position and a cutting position and comprising a blade and a counter blade and means to move said blade and counter blade relative to each other to cut the weft thread; the improvement comprising means for moving said counter blade relative to said blade about an axis perpendicular to said path to the grippers,
  • first and second rotary cam means to control the movement of said blade and counter blade.
  • said cutting means comprising a lever mounted for oscillation about an axis parallel to said path of the grippers, said lever terminating in a hook element for guiding and retaining the weft threads, said counter blade being disposed close to the free end of said hook element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US00264919A 1971-06-21 1972-06-21 Cutting device for looms Expired - Lifetime US3814140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2613971 1971-06-21

Publications (1)

Publication Number Publication Date
US3814140A true US3814140A (en) 1974-06-04

Family

ID=11218720

Family Applications (1)

Application Number Title Priority Date Filing Date
US00264919A Expired - Lifetime US3814140A (en) 1971-06-21 1972-06-21 Cutting device for looms

Country Status (11)

Country Link
US (1) US3814140A (it)
AU (1) AU469010B2 (it)
BE (1) BE785169A (it)
BR (1) BR7204025D0 (it)
CH (1) CH540365A (it)
DE (1) DE2230099A1 (it)
ES (1) ES404068A1 (it)
FR (1) FR2143168B3 (it)
GB (1) GB1401051A (it)
SU (1) SU1058512A3 (it)
YU (1) YU35633B (it)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899008A (en) * 1974-07-10 1975-08-12 Rockwell International Corp Weft cutter control apparatus
US3924662A (en) * 1975-03-12 1975-12-09 Rockwell International Corp Weft cutter control apparatus
US4031925A (en) * 1974-04-30 1977-06-28 Nuovo Pignone, S.P.A. Device for cutting the weft in a shuttleless loom having a continuous weft-supply mechanism
EP0104440A1 (de) * 1982-09-02 1984-04-04 N.V. Michel Van de Wiele Schusssteuereinrichtung für Greiferwebmaschinen und Greiferwebmaschinen, die mit einer derartigen Schusssteuereinrichtung ausgerüstet sind
US4646790A (en) * 1985-01-10 1987-03-03 Sulzer Brothers Limited Cutting mechanism for a weaving machine
US20060053602A1 (en) * 2002-05-31 2006-03-16 Dirk Willemot Device and method for severing a thread
US20130186505A1 (en) * 2012-01-24 2013-07-25 Nike, Inc. Weaving Finishing Device
US8839824B2 (en) 2012-01-24 2014-09-23 Nike, Inc. Multiple layer weaving
BE1021989B1 (nl) * 2014-07-15 2016-02-02 Picanol Inslagschaar voor een weefmachine.
US9533855B2 (en) 2012-01-24 2017-01-03 Nike, Inc. Intermittent weaving splicer

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH651331A5 (de) * 1981-07-06 1985-09-13 Saurer Ag Adolph Kantenschneidvorrichtung fuer eine webmaschine.
DE3315320A1 (de) * 1983-04-27 1984-10-31 Emil Jäger GmbH & Co KG, 4400 Münster Vorrichtung zum eintragen von schussfaeden bei webmaschinen
JP2762132B2 (ja) * 1989-10-04 1998-06-04 津田駒工業株式会社 レピア織機用のよこ入れ装置
IT1273168B (it) * 1994-04-29 1997-07-07 Panter Srl Dispositivo di taglio di trama per una macchina per tessere
IT1276941B1 (it) * 1995-10-16 1997-11-03 Somet Soc Mec Tessile Dispositivo di taglio trama per telai di tessitura

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376900A (en) * 1965-09-24 1968-04-09 Crompton & Knowles Corp Looms operating with multi-color stationary weft supplies
US3621885A (en) * 1969-11-21 1971-11-23 Fischer Ag Brugg Georg Filling cutting device for a weaving machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376900A (en) * 1965-09-24 1968-04-09 Crompton & Knowles Corp Looms operating with multi-color stationary weft supplies
US3621885A (en) * 1969-11-21 1971-11-23 Fischer Ag Brugg Georg Filling cutting device for a weaving machine

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031925A (en) * 1974-04-30 1977-06-28 Nuovo Pignone, S.P.A. Device for cutting the weft in a shuttleless loom having a continuous weft-supply mechanism
US3899008A (en) * 1974-07-10 1975-08-12 Rockwell International Corp Weft cutter control apparatus
US3924662A (en) * 1975-03-12 1975-12-09 Rockwell International Corp Weft cutter control apparatus
EP0104440A1 (de) * 1982-09-02 1984-04-04 N.V. Michel Van de Wiele Schusssteuereinrichtung für Greiferwebmaschinen und Greiferwebmaschinen, die mit einer derartigen Schusssteuereinrichtung ausgerüstet sind
US4646790A (en) * 1985-01-10 1987-03-03 Sulzer Brothers Limited Cutting mechanism for a weaving machine
CN1656266B (zh) * 2002-05-31 2010-11-03 必佳乐有限公司 纱线的切断装置和方法
US20060053602A1 (en) * 2002-05-31 2006-03-16 Dirk Willemot Device and method for severing a thread
US20130186505A1 (en) * 2012-01-24 2013-07-25 Nike, Inc. Weaving Finishing Device
US8800606B2 (en) * 2012-01-24 2014-08-12 Nike, Inc. Weaving finishing device
US8839824B2 (en) 2012-01-24 2014-09-23 Nike, Inc. Multiple layer weaving
US9416467B2 (en) 2012-01-24 2016-08-16 Nike, Inc. Three-dimensional weaving system
US9533855B2 (en) 2012-01-24 2017-01-03 Nike, Inc. Intermittent weaving splicer
US10626526B2 (en) 2012-01-24 2020-04-21 Nike, Inc. Intermittent weaving splicer
BE1021989B1 (nl) * 2014-07-15 2016-02-02 Picanol Inslagschaar voor een weefmachine.

Also Published As

Publication number Publication date
GB1401051A (en) 1975-07-16
FR2143168A1 (it) 1973-02-02
YU35633B (en) 1981-04-30
YU163072A (en) 1980-10-31
AU4362772A (en) 1974-01-03
ES404068A1 (es) 1975-06-01
BR7204025D0 (pt) 1973-07-10
AU469010B2 (en) 1976-01-29
BE785169A (fr) 1972-10-16
DE2230099A1 (de) 1973-01-11
CH540365A (it) 1973-08-15
SU1058512A3 (ru) 1983-11-30
FR2143168B3 (it) 1975-08-08

Similar Documents

Publication Publication Date Title
US3814140A (en) Cutting device for looms
US3342220A (en) Weft changing apparatus
US3621885A (en) Filling cutting device for a weaving machine
JPH024133Y2 (it)
GB2104434A (en) Selvedge cutting device for a weaving machine
GB2063933A (en) Terry motions
US3565121A (en) Weft selecting and presenting apparatus
US2413155A (en) Loom
US2665716A (en) Method and mechanism for filling control in shuttleless looms
US3111966A (en) Method and apparatus for simultaneously weaving lengths of fabric
CN109844197B (zh) 用于无梭织机的纬纱夹持装置
US4143683A (en) Device for controlling and cutting the weft threads in looms with weft inserters
US3875974A (en) Device for controlling gripper shuttles in looms
US3899008A (en) Weft cutter control apparatus
US2326862A (en) Thread cutter and clamp for looms
US3249127A (en) Needle loom
US3592241A (en) Weft thread control apparatus
JPS63196745A (ja) 杼無織機用よこ糸切断装置
US4142558A (en) Device for tucking, retaining and curling the weft and to provide a selvedge of a woven fabric
US4553571A (en) Apparatus for the constrained actuation of the clamping system of filling yarn insertion devices in shuttleless weaving machines
GB1587553A (en) Device for providing single or double selvedges particulary for looms
US2954056A (en) Weaving machine
US4614212A (en) Shedding mechanism for weaving looms
CS214927B1 (en) Facility for programmed interchange of position particularly of nozzles of the jet loom
US2696224A (en) Thread cutting mechanism