US3899008A - Weft cutter control apparatus - Google Patents

Weft cutter control apparatus Download PDF

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Publication number
US3899008A
US3899008A US487005A US48700574A US3899008A US 3899008 A US3899008 A US 3899008A US 487005 A US487005 A US 487005A US 48700574 A US48700574 A US 48700574A US 3899008 A US3899008 A US 3899008A
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US
United States
Prior art keywords
cutter
weft
rod member
spring biased
movement
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
US487005A
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English (en)
Inventor
Edward S Budzyna
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.)
Draper Corp
Original Assignee
Rockwell International 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 Rockwell International Corp filed Critical Rockwell International Corp
Priority to US487005A priority Critical patent/US3899008A/en
Priority to CA227,541A priority patent/CA1026206A/en
Priority to GB2339975A priority patent/GB1473613A/en
Priority to IT50041/75A priority patent/IT1036985B/it
Priority to FR7520460A priority patent/FR2277916A1/fr
Priority to DE19752529878 priority patent/DE2529878A1/de
Priority to JP50083909A priority patent/JPS5132867A/ja
Priority to CH898675A priority patent/CH606561A5/xx
Priority to BR7504398*A priority patent/BR7504398A/pt
Application granted granted Critical
Publication of US3899008A publication Critical patent/US3899008A/en
Assigned to DELTA ACQUISTION CORPORATION reassignment DELTA ACQUISTION CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ROCKWELL INTERNATIONAL CORPORATION
Assigned to DRAPER CORPORATION, reassignment DRAPER CORPORATION, CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE APRIL 1,1982 Assignors: DELTA ACQUISITION CORPORATION,
Assigned to CITICORP INDUSTRIAL CREDIT INC. reassignment CITICORP INDUSTRIAL CREDIT INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DRAPER CORPORATION F/K/A DELTA ACQUISITION CORPORATION
Assigned to STANCHART BUSINESS CREDIT, A CORP. OF CA. reassignment STANCHART BUSINESS CREDIT, A CORP. OF CA. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DRAPER CORPORATION
Assigned to DRAPER CORPORATION, A CORP. OF GEORGIA reassignment DRAPER CORPORATION, A CORP. OF GEORGIA RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CITICORP INDUSTRIAL CREDIT, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • Jaudon 5 7 ABSTRACT An improved weft cutter support for shuttleless looms, which in timed relation to the insertion and beat-up of each pick of weft is effective in simultaneously moving the cutter in a lateral direction to position it in close proximity with the fabric edge while lowering the cutter through rotary movement of the support to position it for reception of the weft and the performance of its intended function.
  • the invention pertains to a weft cutter control apparatus for shuttleless looms of the pick and pick type.
  • the control apparatus includes means for moving the cutter into and out of the path of travel of the looms reed and for actuating the same in timed relation to the weaving cycle so as to cut the weft ends substantially closer to the edge of the fabric, from which they extend, than has been heretofore possible.
  • the inserting carrier When the inserting carrier is caused to move toward the shed to insert the next pick, the weft is guided across the interior of the carrier and into a gripping element which forms a part of the forward wall of said carrier.
  • this carrier continues to move toward the shed the lay beam and reed supported thereby are being pivoted rearwardly from the position of beat-up of the previously inserted pick.
  • the warp threads are crossing to present a new shed opening and the thread cutter is caused to perform its intended function of cutting the weft at a point intermediate the gripping element on the forward wall of the carrier and the side of the fabric to which it extends.
  • the cutting of the weft in this manner forms a so-called fringe on both sides of the woven fabric with the cut end of the previously inserted pick extending from the weft insertion side of said fabric and the end carried into the shed by the carrier extending from the opposite side of the fabric.
  • a problem which has existed with shuttleless looms of the single pick insertion type is that of which is considered excessive length of the fringe on the weft insertion side of the fabric and which necessitates an additional fabric finishing operation for cutting off these ends to a desirable and acceptable length.
  • weft cutters are positioned so as to provide clearance between them and the looms reed during the latters movement with the lay to and from weft beat-up position. Very frequently the width of the fabric being woven is less than the length of the looms reed and results in an undesirable length of fringe on the weft insertion side of the fabric.
  • the weft cutter control apparatus has eliminated the problem of excessive fringe length on the weft insertion side of the fabric and the additional fabric finishing step many mills have considered necessary of shearing said fringe to an acceptable length.
  • the weft cutter control apparatus of the present invention includes a horizontally disposed spring biased rod member which is adapted to support the weft cutter adjacent one end thereof.
  • This rod member is supported for longitudinal and rotary movement by a pair of lever members operatively associated with said rod member and which are disposed in spaced relation adjacent the opposite end of the rod.
  • These lever members are operatively connected to individual camcontrolled driving arms which are effective, as the lay and reed are moving rearwardly from beat-up position, in causing simultaneous longitudinal and rotary movement of the rod member.
  • the longitudinal movement laterally shifts the weft cutter from a position clear of the pathway of the reed to a position in close proximity with the edge of the fabric and the rotary movement is effective in lowering the weft cutter to a predetermined position for performing its intended function.
  • the simultaneous movement of the rod member is reversed and the weft cutter while being raised is moved outwardly from the side of the fabric to its initial position which will clear the reed as the latter and lay beam again move toward the weft beat-up position.
  • a further object of the invention is to provide a weft cutter control apparatus which is effective in causing the cutter to cut each pick of weft so as to form a fringe of pre-determined and acceptable length thereby eliminating the additional fabric finishing operation of shearing said fringe.
  • FIG. 1 is a perspective view of a portion of the upper righthand side of the shuttleless loom showing the weft cutter control apparatus according to the invention applied thereto,
  • FIG. 2 is a perspective view, showing further detail of the weft cutter control apparatus illustrated in FIG. 1 and,
  • FIGS. 3 and 4 are perspective views showing the cam-controlled driving arm and lever for causing longitudinal movement of the rod member on which the weft cutter is carried.
  • FIG. 1 a weft control housing generally indicated by numeral 10.
  • This housing is mounted in the usual manner on the upper right-hand side of the loom and has supported for rotation therein a weft control cam shaft 1 I.
  • the ends of this cam shaft 1 l are journaled in the usual bearings supported within housings l2 and 13 respectively which are disposed in spaced and aligned relation at the sides of the weft control housing 10.
  • a lay beam 14 extends between the loom frames (not shown) and supports a reed 15 through which the warp threads 16 are adapted to pass.
  • a weft inserting carrier 17 is shown in FIG. 1 and in a known manner is fixed to the end of a flexible tape 18 which moves through a tape guide 19 and which is wrapped about and unwrapped from a tape wheel (not shown) located at the side of the loom.
  • the cam shaft 11 being supported within the weft control housing 10 is caused to rotate in a clockwise direction as viewed in FIGS. 3 and 4 by means of bevel gears 20 and 21 shown in FIG. 1.
  • Bevel gear 21 is fixed on cam shaft 11 and is in meshing relation with bevel gear 20 which is fixed on a shaft member 22 that is operatively connected by gear means to the looms cam shaft (notshown).
  • the weft cutter controlled by the apparatus comprising the present invention is identified generally in FIGS. 1 and 2 by numeral 23 and is carried on one end of a support arm 24.
  • the opposite end of this support arm 24 is in the form of a hub 25 having an integrally formed lug 26 with an adjusting screw 27 assembled in and extending upwardly from the upper surface thereof.
  • the hub 25 of the support arm 24 assembles on and adjacent one end of a rod member 28 which is horizontally supported for longitudinal and rotary movement in a U-shaped bracket member generally indicated in FIG. 2 by numeral 29 and will be more fully described hereinafter.
  • the weft cutter 23 also includes an arcuated actuating arm 30 which carries a cutter blade (not shown) for sliding movement within a cutter housing 31 that is attached, by any suitable means, on the end of the support arm 24.
  • the opposite end of the actuating arm 30 is in the form of a hub 32 that is fixed on rod member 28 in contiguous relation to hub 25 by means of a cap screw 33.
  • Those ends of the support arm 24 and actuating arm 30 opposite their hubs, are interconnected and biased one toward the other by means of a coil spring 34 (FIG. 2).
  • the weft cutter is actuated in a known manner by means of a pair of juxtaposed cam members 35 and 36 which are fixed on and caused to rotate with cam shaft 11.
  • a cam follower in the form of a roller 37 carried on the forward end of a spring biased tappet-like member 38 maintains contact with the outer periphery of cam members 35 and 36.
  • the opposite end of this tappet- Iike member is in frictional contact with a roller element 39 (FIG. 2) which is carried on and disposed'intermediate the ends of an upwardly directed lever 40.
  • the lower end of lever 40 is in the form ofa hub 41 and is fixed on rod member 28 as shown in FIG. 2.
  • the upper end of lever 40 is also provided with a hub 42 within which a pin 43 assembles and serves as shown in FIGS.
  • roller 37 in contact with the outer periphery of either cam member 35 or 36.
  • Cam member 36 is cf fective on the tappet-like member 38 and lever 40 so as to lower the weft cutter 23 to a position where the head of the adjusting screw 27 contacts the underside of a support bracket 50 (FIG. 1). In this position the weft cutter is in position for receiving the weft yarn 51 and continued movement of cam shaft 11 causes cam member 35 to actuate the cutter by moving the actuating arm 30 and its cutter blade (not shown) downwardly within the cutter housing 31.
  • the U-shaped bracket member 29 as shown in FIGS. 1 and 2 is provided with a forwardly directed and integrally formed arm 52 having slots 53 for attaching said bracket member to one side of the weft control housing 10 by means of cap screws 54.
  • the opposite side of the weft control housing 10 has an arculated support arm 55 assembled thereto by means of cap screws 56 and includes a hub-like end portion 57 within which that end of rod member 28 most remote from the weft cutter assembled thereon is slidably journaled.
  • Bracket member 29 also includes an integrally formed and rearwardly directed lug element 58 which terminates in a hub 59 and has a bellcrank lever generally indicated by numeral 60, assembled thereon by means of an upwardly directed bolt 61 and nut 62.
  • Bellcrank lever is provided with a bifurcated first arm that defines a yoke 63 in which the opposed surfaces of said yoke have aligned roller members 64 assembled thereto.
  • These roller members 64 are disposed in close proximity with the hub portion of a flanged sleeve 65 that is fixed on rod member 28 and is effective in moving the latter axially in a manner to be more fully described.
  • rod member 28 has a coil spring 66 assembled thereon which serves to continually urge said rod member in the direction of the indicating arrow 67 in FIG. 2.
  • the second arm of bellcrank lever 60 is identified by numeral 68 and is disposed for frictional engagement with a roller member 69 which forms one end of a driving arm 70.
  • Driving arm 70 is slidably supported in the rear wall of the weft control housing 10 and is provided at its forward end with a cam follower in the form of a roller 71.
  • Coil spring 66 is assembled under tension on rod member 28 and the force acting upon sleeve 65 and bellcrank lever 60, in its attempt to continually seek its free length is effective in biasing driving arm 70 in a forwardly direction causing roller 71 to maintain contact with the outer periphery of a cutter control cam 72. As shown in FIG. 1 this cutter control cam 72 is fixed on and caused to rotate with cam shaft 11 and with reference to FIG.
  • said cam is in a position that has caused the driving arm 70 to be moved rearwardly which affects a counter-clockwise movement of the bellcrank lever 60 as viewed in FIG. 1.
  • This movement causes axial movement of the rod member 28 in the direction of the indicating arrow 73 in FIG. 2 and is effective in moving the weft cutter 23 to a position which will clear the reed when the latter is moved to weft beat-up position.
  • the cutter control cam 72 is in a position in which the driving arm 70 has moved forwardly by a clockwise movement of the bellcrank lever 60 as viewed in FIG. 1.
  • This movement is caused by the forces of coil spring 66 acting upon the flanged sleeve 65 and with the latter being fixed on rod member 28 said rod member is caused to move in the direction of the indicating arrow 67 in FIG. 2. Movement of the rod member 28 in this manner moves the weft cutter carried thereon to a position in close proximity with the edge of the fabric that is depicted by numeral 74 in FIG. 1.
  • a weft positioner rod 75 (FIG. 1) carried by an arm 76 that is attached to the support bracket 50 serves to guide the weft 51 and position it so as to be received into the weft cutter 23 and the gripping means in the forward wall of the carrier 17.
  • the lay beam and reed supported thereb'y are caused to be moved to and fro in a well-known manner during the insertion and beat up of each pick of weft.
  • the lay beam and reed commence to move rearwardly as the upper and lower sheets of warp threads reverse their positions to form a new shed for the next pick.
  • the weft inserting carrier is moving toward the shed and the dictates of cams 36 and 72 within the weft control housing are effective upon rod member 28 to simultaneously lower the weft cutter 23 to weft receiving position while laterally moving the same to a position in close proximity with the edge of the fabric.
  • movable mounting means defining a longitudinal and rotary movable spring biased rod member for supporting the cutter for movement between an inoperative position outside of the path of travel of the loom reed and an operative position for cutting the weft yarn;
  • drive means operably connected to said spring biased rod member and to a source of motive power for moving said spring biased rod member through longitudinal and rotary movements to affect positioning the cutter in said inoperative and in said operative positions alternately.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US487005A 1974-07-10 1974-07-10 Weft cutter control apparatus Expired - Lifetime US3899008A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US487005A US3899008A (en) 1974-07-10 1974-07-10 Weft cutter control apparatus
CA227,541A CA1026206A (en) 1974-07-10 1975-05-22 Weft cutter control apparatus
GB2339975A GB1473613A (en) 1974-07-10 1975-05-29 Weft cutter control apparatus
IT50041/75A IT1036985B (it) 1974-07-10 1975-06-12 Dispositivo di controllo di un tagliatore di trama
FR7520460A FR2277916A1 (fr) 1974-07-10 1975-06-30 Dispositif de support de couteau de trame pour metier a tisser sans navette
DE19752529878 DE2529878A1 (de) 1974-07-10 1975-07-04 Schuetzenlose webmaschine mit verbessertem schussfadenabtrenner
JP50083909A JPS5132867A (en) 1974-07-10 1975-07-08 Hinashishokukino yokoitosetsudankiseigyosochi
CH898675A CH606561A5 (pt) 1974-07-10 1975-07-09
BR7504398*A BR7504398A (pt) 1974-07-10 1975-07-10 Aperfeicoamentos em tear sem lancadeira

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US487005A US3899008A (en) 1974-07-10 1974-07-10 Weft cutter control apparatus

Publications (1)

Publication Number Publication Date
US3899008A true US3899008A (en) 1975-08-12

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Application Number Title Priority Date Filing Date
US487005A Expired - Lifetime US3899008A (en) 1974-07-10 1974-07-10 Weft cutter control apparatus

Country Status (9)

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US (1) US3899008A (pt)
JP (1) JPS5132867A (pt)
BR (1) BR7504398A (pt)
CA (1) CA1026206A (pt)
CH (1) CH606561A5 (pt)
DE (1) DE2529878A1 (pt)
FR (1) FR2277916A1 (pt)
GB (1) GB1473613A (pt)
IT (1) IT1036985B (pt)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3998249A (en) * 1974-09-20 1976-12-21 Sulzer Brothers Limited Cut-off device for a textile machine
US4040452A (en) * 1974-08-02 1977-08-09 Nuovo Pignone S.P.A. Device for holding cut weft threads to be folded up into the shed to form a tucked selvedge in a fabric made by a shuttleless loom having a continuous weft supply mechanism

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5720619Y2 (pt) * 1976-04-05 1982-05-04
JPS5381762A (en) * 1976-12-27 1978-07-19 Hiraiwa Tetsukoushiyo Kk Device for yarn catching and cutting on shuttleless loom
JPS587588B2 (ja) * 1977-06-09 1983-02-10 中小企業事業団 縫製物の搬送装置
DE2965138D1 (en) * 1978-07-28 1983-05-11 Wiele Int Pvba Van De Loom with weft cutting device and such a device for use therein

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654399A (en) * 1949-12-16 1953-10-06 Draper Corp Filling motion for shuttleless looms
US2921611A (en) * 1958-03-28 1960-01-19 Draper Corp Filling holding and cutting mechanism for looms
US3621885A (en) * 1969-11-21 1971-11-23 Fischer Ag Brugg Georg Filling cutting device for a weaving machine
US3814140A (en) * 1971-06-21 1974-06-04 Somet Soc Mec Tessile Cutting device for looms

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654399A (en) * 1949-12-16 1953-10-06 Draper Corp Filling motion for shuttleless looms
US2921611A (en) * 1958-03-28 1960-01-19 Draper Corp Filling holding and cutting mechanism for looms
US3621885A (en) * 1969-11-21 1971-11-23 Fischer Ag Brugg Georg Filling cutting device for a weaving machine
US3814140A (en) * 1971-06-21 1974-06-04 Somet Soc Mec Tessile Cutting device for looms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040452A (en) * 1974-08-02 1977-08-09 Nuovo Pignone S.P.A. Device for holding cut weft threads to be folded up into the shed to form a tucked selvedge in a fabric made by a shuttleless loom having a continuous weft supply mechanism
US3998249A (en) * 1974-09-20 1976-12-21 Sulzer Brothers Limited Cut-off device for a textile machine

Also Published As

Publication number Publication date
JPS5322586B2 (pt) 1978-07-10
IT1036985B (it) 1979-10-30
JPS5132867A (en) 1976-03-19
BR7504398A (pt) 1976-07-06
GB1473613A (en) 1977-05-18
FR2277916A1 (fr) 1976-02-06
CA1026206A (en) 1978-02-14
DE2529878A1 (de) 1976-01-29
CH606561A5 (pt) 1978-11-15

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AS Assignment

Owner name: DELTA ACQUISTION CORPORATION; HORNADAY RD., GREENS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ROCKWELL INTERNATIONAL CORPORATION;REEL/FRAME:004113/0020

Effective date: 19820321

Owner name: DRAPER CORPORATION,

Free format text: CHANGE OF NAME;ASSIGNOR:DELTA ACQUISITION CORPORATION,;REEL/FRAME:004097/0735

Effective date: 19820920

AS Assignment

Owner name: CITICORP INDUSTRIAL CREDIT INC., A CORP. OF DE

Free format text: SECURITY INTEREST;ASSIGNOR:DRAPER CORPORATION A CORP. OF GA F/K/A DELTA ACQUISITION CORPORATION;REEL/FRAME:004070/0533

Effective date: 19821021

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Owner name: STANCHART BUSINESS CREDIT, 200 GALLERIA PARKWAY, N

Free format text: SECURITY INTEREST;ASSIGNOR:DRAPER CORPORATION;REEL/FRAME:004539/0198

Effective date: 19860328

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Owner name: DRAPER CORPORATION, GREENSBORO, NORTH CAROLINA A C

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CITICORP INDUSTRIAL CREDIT, INC.;REEL/FRAME:004664/0583

Effective date: 19860331