US3924554A - Thread chain cutting apparatus - Google Patents

Thread chain cutting apparatus Download PDF

Info

Publication number
US3924554A
US3924554A US520756A US52075674A US3924554A US 3924554 A US3924554 A US 3924554A US 520756 A US520756 A US 520756A US 52075674 A US52075674 A US 52075674A US 3924554 A US3924554 A US 3924554A
Authority
US
United States
Prior art keywords
thread
chain
wheel
rotating wheel
thread chain
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
US520756A
Other languages
English (en)
Inventor
Donald Cummins
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.)
Automated Machinery Systems Inc
Original Assignee
AMF Inc
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 AMF Inc filed Critical AMF Inc
Priority to US520756A priority Critical patent/US3924554A/en
Priority to DE19752548498 priority patent/DE2548498A1/de
Priority to IT52210/75A priority patent/IT1052256B/it
Application granted granted Critical
Publication of US3924554A publication Critical patent/US3924554A/en
Assigned to AMF UNION MACHINERY INC., A CORP OF DELAWARE reassignment AMF UNION MACHINERY INC., A CORP OF DELAWARE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AMF INCORPORATED, A CORP OF N.J.
Assigned to BANK OF VIRGINIA, 800 E. MAIN STREET, RICHMOND, VA. 23260, A BANKING CORP. OF VA. reassignment BANK OF VIRGINIA, 800 E. MAIN STREET, RICHMOND, VA. 23260, A BANKING CORP. OF VA. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AUTOMATED MACHINERY SYSTEMS, INC, A CORP. OF VA.
Assigned to AUTOMATED MACHINERY SYSTEMS, INC. A CORP OF VA reassignment AUTOMATED MACHINERY SYSTEMS, INC. A CORP OF VA MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE JANUARY 2, 1986, VIRGINIA Assignors: AMF UNION MACHINERY INC., A DE CORP. (INTO)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2207/00—Use of special elements
    • D05D2207/02—Pneumatic or hydraulic devices
    • D05D2207/04—Suction or blowing devices

Definitions

  • the present invention is directed to an apparatus for severing a chain thread serving to allow a plurality of garments or garment sections to be linked to one another. More particularly, the present invention relates to an automatic arrangement employing a pair of stationary knives adapted to sever chain threads from their associated garment or garment sections as they are being processed.
  • the principal features of the present invention are directed to an apparatus for severing thread chains attached to a series of garment members in a predefined fashion after conveying such garment sections to said device; a housing structure for retaining said apparatus, guide means integral with said housing, for receiving said thread chain through passage ways associated therewith; a wheel disposed away from said guide means, driven by motor means affixed to said housing, said wheel being adapted to engage and move a defined section of thread chain away from the point of entry at said guide means; barrier means proximate to said rotating wheel and being spaced therefrom, serving to provide support for said thread chain during its movement away from said guide means by said rotating wheel; a pair of fixed knives each of which being disposed on either side of said rotating wheel for a blade to blade distance representing the amount of chain thread to be cut, said knives being adapted to sever said thread chain at a predefined time in response to the distance traveled by said chain as it travels under the action of said rotating wheel; and spring loaded sheaths covering the cutting surface of said knives serving to prevent such surfaces
  • a rotating wheel provided with a series of spaced convoluted slots each of which is of a sufficient width to accept a thread chain passing therethrough and moving in accordance with the curvature of such slot during the rotation of said wheel.
  • the invention includes a structure where said wheel is in proximity to a pair of substantially flat blocks adapted to serve as thread supporting surfaces adapted to cause the chain thread to become taught as it is being advanced through said slot of said rotating wheel, thereby enabling the force generated on said sheaths to overcome the spring bias of said sheaths and allow said knives to act upon said thread chain.
  • Still a further object of the present invention is to provide an apparatus capable of cutting chain threads while simultaneously increasing the rate of overall production.
  • a further object of the present invention is to provide a device for use with an automatic sewing-pressing apparatus capable of being programmed to selectively sever thread chains in a prescribed manner.
  • FIG. 1 is a rear view of the invention showing the thread engaging wheel.
  • FIG. 2 is a front view of the invention shown in FIG. 1.
  • FIG. 3 is a partial profile view showing the flow of chained material prior to and after entering the inventive device.
  • FIG. 4a is a pictorial view of the wheel and thread chain engaged therewith at the outset of the cutting cycle.
  • FIG. 4b is another view of the chain and wheel at a point in time subsequent to that illustrated in FIG. 4a.
  • FIG. 5a is a partial cross-sectional view of FIG. 4a.
  • FIG. 5b is a partial cross-sectional view of FIG. 4b.
  • FIG. 6 is a pictorial representation of the thread chain exhaust system.
  • the present invention as is generally shown in FIGS. 1-6 contemplates a device for automatically removing the thread chain T from between work pieces of limp material W that are being sewn together as such joined pieces flow from the dewing machine station. More particularly, the present invention employs a mechanical arrangement for guiding, engaging and cutting the 3 thread chains (see FIG. 3).
  • the various work pieces W exit from the sewing machine or from a stitching station, they are connected one to another and are held in continuity with respect to one another by means of a thread T in the form of a woven chain.
  • Such work pieces advance onto the next station by means of a conveyor or skid plate 1.
  • the present invention 2 serves to sever the thread chain (see FIGS. a5b) particularly, as shown in FIG. 3 the series of connected work pieces W is caused to drop over a nose bar arrangement 3 where a thread cutter is located.
  • the present invention employs a series of adjacent parallel barriers (in the form of a grill work) 4 spaced apart from one another which enable the sewn pieces W to be drawn in proximity to the knives 5 as the thread chain T enter the grill 4.
  • a series of adjacent parallel barriers in the form of a grill work 4 spaced apart from one another which enable the sewn pieces W to be drawn in proximity to the knives 5 as the thread chain T enter the grill 4.
  • such plurality of barriers 4 permits the-chain T to pass through for subsequent treatmentinterior of the grill work 4.
  • the sewn work pieces W are
  • the actual cutting knives 5 are stationary and disposed on either side of the rotary wheel 6.
  • Each knife 5 is located beneath the grill 4 and has associated therewith a spring loaded sheath 9 (see FIGS. 5a-5b).
  • the engagement of the thread T chain by the wheel 6 as it rotates causes the chain T to become taught and has its relative position fixed with respect to the grill 4 and the knives 5, by virtue of the action of the respective gripping blocks 9.
  • the sewn pieces W are drawn to the grill face 4 and the knife sheaths 9 are forward of the knife cutting edges so as to prevent premature cutting. Thereafter, the sewn pieces W are caused to meet the grill face 4 due to the continuous rotation of the wheel 6 and drawing of the thread chain T.
  • sheaths 9 on the knives 5 are starting to expose the In effect, the sewn pieces W by being forced to meet the grill face 4 via rotation of the wheel 6 which has engaged the thread chain T, increases pressure on the spring loaded sheaths 9 and .in turn causes them to move toward the rear of the cutting edges of the knives 5 and in turn severing is effectuated.
  • the knives 5 on either, side of the pick-up wheel 6 have edges that are parallel to the plane of the wheel 6. The increase in pressure on the spring loaded sheaths 9 is attributable to the thread chains T being drawn further and further into the gripping blocks 8 by the rotation of the wheel 6.
  • the necessary force to overcome the opposing spring force of the sheaths 9 is such, so as to cause the sheaths 9 to retract and allow the thread chain T to be severed at both ends, at a nominal distance from the work pieces W which are attached to one another through the thread chain T.
  • the device of the present invention is a purely mechanical device easy to maintain and relatively trouble free.
  • the interaction betweenthe convoluted slots 7 in the wheel 6 and the gripper blocks8 on either sides of the wheel 6 is quite essential for correct cutting action by the stationary knives 5. This follows for the reason that too little pressure generated by the action of the rotating wheel 6 and the gripper blocks 8 on the thread chain T will fail to produce the necessary force required to overcome the resistance offered by the spring loaded sheaths 9 to exposethe cuttingsu rfaces of the knives.
  • too muchpressure and resultant force on the sheaths 9 can cause the knife blades to be exposed prematurely and cut the thread chain T at a point along its length which is "undesirable, particularly with respect to excessive residual thread portion left on the sewn pieces.
  • the knives 5 must be positioned both with respect to the grill 4 and with respect to the working edges of the gripping blocks 8 so as to insure a positive and clean cut of the thread chain T at a given point along such chain.
  • An apparatus for severing thread chains attached to a series of garment members is a predefined fashion after conveying su'ch garment sections to said device;
  • housing structure for retaining said apparatus, guide means integral. with said housing, for receiving said thread chain through passage ways associated therewith; a wheel disposed away from said guide means, driven by motor means affixed to said housing, said wheel including means to engage and move a defined section of thread chain away from the point of entry at said guide means; barrier means proximate to said rotating wheel and being spaced therefrom, serving to provide support for said thread chain during its movement away from said guide means by said rotating wheel; a pair of fixed knives each of which being disposed on either side of said rotating wheel for a blade to blade distance representing the amount of chain thread to be cut, said knives being adapted to sever said thread chain at a predefined time in response to the distance traveled by said chain and the force resulting therefrom as it travels under the action of said rotating wheel; and spring loaded sheaths covering the cutting surface of said knives serving to prevent such surfaces from prematurely cutting the thread chain until the downward force applied by the chain on said sheaths exceeds the opposing spring load force, at which time "the cutting surface of
  • said guide means includes a plurality of spaced apart parallel slots serving to provide initial entry of the thread chain into said apparatus for engagement with a given slot in said rotating wheel.
  • said wheel is in proximity to a pair of substantially flat blocks adapted to serve as thread supporting surfaces adapted to cause the chain thread to become taught as it is being advanced through said slot of said rotating wheel, thereby enabling the force generated on said sheaths to overcome the spring bias of said sheaths and allow said knives to act upon said thread chain.
  • each of said convoluted slots is offset by with respect to one another.
  • a clearance distance between said rotating wheel and said flat blocks is 0.004 inches.
US520756A 1974-11-18 1974-11-18 Thread chain cutting apparatus Expired - Lifetime US3924554A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US520756A US3924554A (en) 1974-11-18 1974-11-18 Thread chain cutting apparatus
DE19752548498 DE2548498A1 (de) 1974-11-18 1975-10-29 Vorrichtung zum abschneiden von kleidungsstuecke oder kleiderteile miteinander verbindenden fadenketten
IT52210/75A IT1052256B (it) 1974-11-18 1975-11-14 Apparecchio per tagliare catenelle di filo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US520756A US3924554A (en) 1974-11-18 1974-11-18 Thread chain cutting apparatus

Publications (1)

Publication Number Publication Date
US3924554A true US3924554A (en) 1975-12-09

Family

ID=24073930

Family Applications (1)

Application Number Title Priority Date Filing Date
US520756A Expired - Lifetime US3924554A (en) 1974-11-18 1974-11-18 Thread chain cutting apparatus

Country Status (3)

Country Link
US (1) US3924554A (de)
DE (1) DE2548498A1 (de)
IT (1) IT1052256B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4138957A (en) * 1977-11-07 1979-02-13 Levi Strauss & Company Vacuum thread cutter for use in an automated textile sewing operation
US4738210A (en) * 1986-05-23 1988-04-19 Keeton J Herbert Backlatch attachment with a rotatable thread catcher
US6394013B1 (en) * 2000-04-14 2002-05-28 Xyz Control, Inc. Method and apparatus for sewing a fringe to a woven fabric material
US20090126611A1 (en) * 2007-11-20 2009-05-21 Alberto Landoni Systems and methods for thread handling and/or cutting

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828702A (en) * 1953-09-10 1958-04-01 Hall Lawrence Edgar Machine for rooting hair
US2977906A (en) * 1954-09-20 1961-04-04 Follender Otto Apparatus for inserting hair into the heads of dolls
US3025811A (en) * 1960-02-02 1962-03-20 Singer Mfg Co Thread-chain holding and cutting device for sewing machines
US3490397A (en) * 1967-01-18 1970-01-20 Walter Ulrich Hair-inserting apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828702A (en) * 1953-09-10 1958-04-01 Hall Lawrence Edgar Machine for rooting hair
US2977906A (en) * 1954-09-20 1961-04-04 Follender Otto Apparatus for inserting hair into the heads of dolls
US3025811A (en) * 1960-02-02 1962-03-20 Singer Mfg Co Thread-chain holding and cutting device for sewing machines
US3490397A (en) * 1967-01-18 1970-01-20 Walter Ulrich Hair-inserting apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4138957A (en) * 1977-11-07 1979-02-13 Levi Strauss & Company Vacuum thread cutter for use in an automated textile sewing operation
US4738210A (en) * 1986-05-23 1988-04-19 Keeton J Herbert Backlatch attachment with a rotatable thread catcher
US6394013B1 (en) * 2000-04-14 2002-05-28 Xyz Control, Inc. Method and apparatus for sewing a fringe to a woven fabric material
US20090126611A1 (en) * 2007-11-20 2009-05-21 Alberto Landoni Systems and methods for thread handling and/or cutting
US7591227B2 (en) 2007-11-20 2009-09-22 Alberto Landoni Systems and methods for thread handling and/or cutting
US20090301370A1 (en) * 2007-11-20 2009-12-10 Alberto Landoni Systems and methods for thread handling and/or cutting
US8342113B2 (en) 2007-11-20 2013-01-01 Alberto Landoni Systems and methods for thread handling and/or cutting

Also Published As

Publication number Publication date
IT1052256B (it) 1981-06-20
DE2548498A1 (de) 1976-05-20

Similar Documents

Publication Publication Date Title
EP0054060B1 (de) Geflügelschneidevorrichtung
US3463040A (en) Machine for cutting sheet materials
US2369360A (en) Sausage skinning machine
US3996824A (en) Groove cutter
US4750442A (en) Cuff production
US3075325A (en) Method and apparatus for feeding wrapping material into a wrapping machine
US3924554A (en) Thread chain cutting apparatus
US4063331A (en) Gut puller
US4158762A (en) Apparatus and method for cutting and heat sealing woven thermoplastic material
US2795816A (en) Hamburg patty making machine
EP0021286B1 (de) Vorrichtung zur Fertigstellung von Reissverschlusstragbändern
US3232412A (en) Apparatus for bringing into upright belly-dosal position fish transported resting on one side
GB2060545A (en) Bag emptying machine
US3156006A (en) Link cutting machine
US4564976A (en) Apparatus for processing poultry breasts
JPH02501897A (ja) 備付シーツの縁取機
US3581716A (en) Apparatus and method for removing chains of stitches between successive articles
US2569396A (en) Sewing machine attachment
US3564644A (en) Automatic poultry breast cutter
US3662430A (en) Splitting machine for chicken
US4204492A (en) Apparatus for hemming fabric pieces
US1929970A (en) Automatic textile machine
US3055374A (en) Apparatus for severing wrapper sheets
JPS5859830A (ja) タイヤ用ゴムシ−ト材料の切断装置
US3130844A (en) Stitching tobacco leaves for hanging

Legal Events

Date Code Title Description
AS Assignment

Owner name: AMF UNION MACHINERY INC., 2115 WEST LABURNUM AVENU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMF INCORPORATED, A CORP OF N.J.;REEL/FRAME:004486/0638

Effective date: 19851111

AS Assignment

Owner name: BANK OF VIRGINIA, 800 E. MAIN STREET, RICHMOND, VA

Free format text: SECURITY INTEREST;ASSIGNOR:AUTOMATED MACHINERY SYSTEMS, INC, A CORP. OF VA.;REEL/FRAME:004495/0269

Effective date: 19860110

AS Assignment

Owner name: AUTOMATED MACHINERY SYSTEMS, INC. A CORP OF VA

Free format text: MERGER;ASSIGNOR:AMF UNION MACHINERY INC., A DE CORP. (INTO);REEL/FRAME:004647/0149

Effective date: 19861022