US3340902A - Method and apparatus for forming tucked-in selvage - Google Patents

Method and apparatus for forming tucked-in selvage Download PDF

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Publication number
US3340902A
US3340902A US535108A US53510866A US3340902A US 3340902 A US3340902 A US 3340902A US 535108 A US535108 A US 535108A US 53510866 A US53510866 A US 53510866A US 3340902 A US3340902 A US 3340902A
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United States
Prior art keywords
filling
yarn
selvage
shed
loom
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Expired - Lifetime
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US535108A
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English (en)
Inventor
Berry Ronald
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HORACE L BOMAR AS TRUSTEES
Draper Corp
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HORACE L BOMAR AS TRUSTEES
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Application filed by HORACE L BOMAR AS TRUSTEES filed Critical HORACE L BOMAR AS TRUSTEES
Priority to US535108A priority Critical patent/US3340902A/en
Priority to CH1767966A priority patent/CH453245A/de
Priority to DE19661535385 priority patent/DE1535385B1/de
Priority to FR91606A priority patent/FR1508564A/fr
Priority to GB3474/67A priority patent/GB1119907A/en
Application granted granted Critical
Publication of US3340902A publication Critical patent/US3340902A/en
Assigned to DRAPER CORPORATION, reassignment DRAPER CORPORATION, CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE APRIL 1,1982 Assignors: DELTA ACQUISITION CORPORATION,
Assigned to DELTA ACQUISTION CORPORATION reassignment DELTA ACQUISTION CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ROCKWELL INTERNATIONAL 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
Anticipated expiration legal-status Critical
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.
Expired - Lifetime legal-status Critical Current

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    • 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
    • D03D47/40—Forming selvedges
    • D03D47/48—Forming selvedges by inserting cut end of weft in next shed, e.g. by tucking, by blowing
    • 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
    • D03D47/40—Forming selvedges

Definitions

  • It is a general object of this invention also to devise a novel method for forming the selvage in a shuttleless loom whereby the extending end of 'each pick of filling is taken from the yarn carrier and maintained under constant tension while being reinserted into the selvage shed.
  • Shuttleless wide-fabric looms are known in the art as those in which cut lengths of filling yarn are drawn from a fixed source outside of the loom and inserted by carriers into the warp sheds.
  • the fabric from such looms has at least one selvage with a fringe-like extension which may be left or trimmed in some manner unless the ends are turned back and woven into the selvage yarn. Tucking in the loose ends has in the past presented numerous problems for such reasons as uneven lengths, loss of direct contact with yarn, lack of tension, snapping back and doubling up.
  • This invention is directed toward improvements in apparatus and method by which many of the problems above may be overcome.
  • FIG. 1 is a plan view of the apparatus shown in place upon the left-hand end of a loom;
  • FIG. 2 is a side elevation of that in FIG. 1 with a portion broken away for clarity;
  • FIG. 3 is a portion of the drawing in FIG. 2 but showing the yarn cutting blades injected into the warp shed;
  • FIG. 4 is an enlarged perspective view of the filling receiving member and the inserting means in the filling transfer position following beat-up;
  • FIG. 5 is similar to FIG. 4 with the parts moved to the filling inserting position
  • FIG. 6 is an elevation in detail of the yarn severing means
  • FIG. 7 is an exploded view of the parts shown in FIG. 6;
  • FIG. 8 is a fragmental elevation of the cutter triggering bracket and tab as positioned in FIG. 3.
  • FIGS. 1 and 2 the apparatus 17 of the invention is shown fixed to the left-hand side of a wellknown shuttleless type loom just forward of the fell 18 of the woven fabric 19.
  • a breast beam 20 of the loom framework supports the invention upon a plate 21 which extends forwardly toward the lay 22 and reed 23 both of which reciprocate in a known manner in beating up the inserted filling yarn to the fabric.
  • a tape guide 24 directs a flat flexible tape 25 with a yarn carrier 26 secured to its free end into the alternately opened sheds formed of warp ends 27.
  • cut lengths of filling are introduced from an outside source to warp sheds by a right-hand carrier (not shown) and, near the center of the fabric, given over to the carrier 26 to be drawn the remaining distance. It is not generally feasible to attempt to cut the lengths of filling to meet the exact width of the fabric but a small extending end is allowed to remain. This invention is intended to meet the need for a selvage in which the extended end is tucked back into the shed and beat up to form a neater and stronger finished fabric edge.
  • a continually rotating shaft 28 which may be driven by any convenient means such as a link belt 29 (FIG. 2) in connection with a rotating loom shaft (not shown). It is desirable that the movement of these members be synchronized with the action of the yarn carrier 26.
  • the shaft 28 extends through and is rotatably journaled by two upright brackets 30 and 31 which are fixed to the plate 21 (FIG. 1). One end of the' shaft 28 is driven by the chain 29 and the other end has a bevel gear 32 firmly fixed thereon. Between the brackets 30 and 31 two disc cams 33 and 34 are adjustably fixed for rotation with the shaft 28 by being secured to collars 35 and 36.
  • the cams 33 and 34 perform similar functions but have different timing action.
  • a supporting shaft 37 is carried at its ends by the brackets 30 and 31 in a position somewhat above and forwardly of the shaft 28 (FIG. 2).
  • a pivotal lever 38 is loosely held at one end by the shaft 37 and extends downwardly toward the plate 21.
  • a cam follower roller 39 is fastened between the ends of the lever 38 and held in continual contact with the cam 33 by a tension spring 40 fixed to the plate 21 and to a point near the lower end of lever 38.
  • a second pivotal lever 41 similar to lever 38 is also held upon the shaft 37 and has a cam follower roller 42 held into contact with the cam 34 by a tension spring 43 fixed near its lower end (FIGS. 1 and 2).
  • the lower ends of the levers 38 and 41 will reciprocate forward and back in following the dictates of the cams 33 and 34. This action will be utilized to give movement to a receiving member and a severing means in a manner more fully explained below.
  • a connecting rod 44 is loosely fastened at one end to the lower end of the lever 38 and at the other end to a rocker arm 45.
  • the rocker arm 45 is pivoted below the plate 21 and projects upwardly through an opening therein.
  • a second rocker arm 46 spaced from the arm 45 is also pivotally supported below the plate 21.
  • Arms 45 and 46 have a connecting link 47 fastened to their upper ends and both are rocked forward and back by the action of the rod 44.
  • the link 47 has a downwardly extending arm 48 with a circular hole through the lower end (FIGS. 1 and
  • the arm 48 supports and gives movement to a short length of small pipe 49 adjustably inserted into the circular hole.
  • the rearwardly directed open end 50 of the pipe 49 is smoothly polished for receiving an end of filling yarn.
  • the pipe 49 is inserted at its forward end into an air hose 51 which connects with some means (not shown) for causing air to be drawn inwardly through the open end 50 with sufficient force to draw in and hold an end of filling yarn securely. This may be effected by means of a venturi device or an air pump to cause a pressure drop at the open end 50 of the pipe 49.
  • the cam 33 moves the pipe 49 to an advanced position (FIG. 1) where it may catch the end of filling 52 just released by the carrier 26 without any appreciable loss of tension.
  • the pipe 49 is then moved quickly to a retracted position (FIG. 4) to avoid being struck by the reed 23 in its beat-up motion.
  • the pipe 49 is moved generally perpendicularly to the path of the inserted filling 52 but passes through a small rising are due to the pivotal movement given to the arm 48. The rise and fall of this are allows the end of the pipe 50 to rise over the edge of the tape 25 and to drop slightly in approaching the carrier 26 and also to transfer the end of filling to the inserting means.
  • the yarn inserting means for removing the end of filling from the retracted pipe 49 and moving with the end of filling into the re-opened warp shed receives its motion also from the rotation of the shaft 28.
  • the bevel gear 32 meshes with another bevel gear 53 of equal size fixed to the end of a shaft 54 which is supported between brackets 55 and 56 (FIGS. 1 and 2).
  • a disc 57 is secured to the other end of the shaft 53 for rotation therewith.
  • a connecting rod 58 is attached by a flexible rod end 59 to the face of the disc 57 near its outer periphery to receive reciprocatory movement.
  • the rod 58 is connected by a second rod end 60 to an arm of a segmental gear 61 which is supported for oscillation between an air housing 62 and a shaft housing 63.
  • a small spur gear 64 is in mesh with the gear 61 and keyed to a vertical shaft 65 (FIGS. 2 and 4) which extends upwardly into the air housing 62 and downwardly through the shaft housing 63.
  • the vertical shaft carrying the gear 64 is hollow to allow air under negative pressure to pass through.
  • An air hose 66 is fixed at one end to the air housing 62 and extends, as does the air hose 51, to any suitable means for causing a pressure drop and drawing air upwardly through the shaft housing 63.
  • a hollow tube 67 is tightly inserted upwardly into the shaft 65 to be oscillated thereby.
  • the tube 67 has a lower portion formed generally as a horizontal crook ending in an open intake end 68 through which air may be inwardly drawn.
  • the tube 67 is positioned to be close to and to swing around the usual loom temple 69 by which the woven fabric 19 is held.
  • the pipe 49 When the pipe 49 is moved into its retracted position, the end of filling will be drawn across and taken over by the intake end 68. This may be more easily accomplished by cutting off the intake of air through opening 50 by means of a valve (not shown) in the hose 51 but such may not be necessary in all applications.
  • the tube 67 is at this point in a filling transfer position and as the warp threads are transposed to open a second shed, the tube 67 is rotated to the filling inserting position as 4 shown in FIG. 5.
  • the end of filling has been held under constant tension from when it was taken from the carrier 26 to this point of being positively positioned in the reopened shed in preparation to be beat up with the next subsequent pick of filling. Before the beat-up occurs the tucked-in end is to be trimmed to a specific length so that all will be equal and form a neat appearing and strengthened selvage.
  • Yarn severing means The lower end of the lever 41 is joined to a connecting rod 70 which extends rearwardly toward the fell 18 and is attached to one arm 71 of a bell crank lever 72 (FIGS. 2 and 7).
  • the lever 72 is pivoted upon a shaft 73 supported below the plate 21.
  • a second arm 74 of the lever 72 carries a yarn cutting device generally designated 75 which may be oscillated by the action of the pivotal lever 41 and caused to be injected downwardly through the threads of the warp shed and there to trap and cut the end of filling being held by the tube 17.
  • a fixed cutter blade 76 having a cutting edge 77 is fastened to the arm 74 as by screws 78.
  • Two threaded studs 79 and 80 extend from one side of the blade 76 (FIG. 7).
  • a movable cutter blade 81 having a cutting edge 82 is assembled on the studs 79 and 80 through two elongated slots 83 and 84 which restrict the movement of blade 81 relative to blade 76.
  • a restraining plate 85 is held resiliently against the blade 81 by compression springs 86 and 87 and lock nuts 88 applied to the studs 79 and 80.
  • a tab 89 on the upper end of the blade 81 will serve to stop the movement of that blade and allow the edges 77 and 82 to overlap in a cutting action.
  • An opening 90 between the edges 77 and 82 will trap the end of filling as the cutter blades descend through the warp shed (FIG. 6).
  • a spring 91 fixed to the lever 72, is pressed against the tab 89 and urges the blade 81 downwardly or in an open position.
  • the cutter device may be positioned longitudinally of the warp shed so that any predetermined selvage width can be obtained.
  • a bracket 92 having a stop finger 93 is fastened to the plate 21 (FIG. 1) in a location to contact the tab 89 when the device is rotated downwardly (FIG. 8).
  • the end of filling is held as shown in FIG. 5 and the end will be trapped in the opening 90 and cut by the edges 77 and 82.
  • the portion which is cut will be that amount which exceeds the desired width of the selvage.
  • the cut portion will be drawn by suction through the tube 67 and disposed outside the shed in any convenient receptacle (not shown).
  • the tucking-in apparatus of the invention follows a cycle which repeats with each pick of filling placed by the yarn carrier. No matter whether the picks are inserted in the form of hairpins or as single picks, each extending end will be positively controlled while being reinserted into an open shed and will there be cut to length before being beat up into the fabric.
  • a cycle might start at the point shown in FIG. 1 where the carrier is leaving the shed and has released the end of filling to the pipe 49 which retracts to the position in FIG. 4.
  • the tube 67 takes the filling end and, as the reed backs away, the tube enters the re-opened shed with the filling end under tension (FIG. 5).
  • the cutter device 75 descends through the warp shed and severs the filling yarn which is disposed of by the tube.
  • the pipe 49 has advanced and taken control of a second pick which is beat up with the tucked-in first end and the cycle repeats.
  • the novel device disclosed herein provides a positive means and method for tucking in the loose extending ends of filling, for cutting all such ends to an equal length, and for disposing of the cut portion to thereby produce a neater reinforced selvage.
  • a'selvage forming apparatus comprising (a) a filling end receiving member for holding each end of filling yarn as it is released by one of said carrying members, and
  • said inserting means comprises a transferring member for transferring said end of filling yarn from said receiving member to the re-opened warp shed, and means for oscillating said transferring member between a filling transfer position and a filling inserting position in timed relationship with a said carrying member.
  • Mechanism as defined in claim 1 which further comprises yarn severing means for trimming the inserted end of filling within the re-opened warp shed.
  • said severing means includes a pair of yarn cutting edges movably supported for injection into each opened warp shed for trapping and cutting the end of filling inserted therein.
  • Mechanism as defined in claim 3 which further comprises (a) means for advancing and retracting said receiving member to an advanced position to receive the end of yarn and to a retracted position to allow said reed to beat up an introduced length of yarn,
  • said inserting means including a hollow tube having an intake end through which air is adapted to be drawn under pressure for transferring said end of filling yarn from said receiving member to the reopened warp shed,
  • a method of forming a selvage upon the fabric being woven in a shuttleless loom having yarn carrying members for introducing cut lengths of filling into warp sheds which comprises the steps of (a) transferring an end of said length of filling to a receiving member,

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US535108A 1966-03-17 1966-03-17 Method and apparatus for forming tucked-in selvage Expired - Lifetime US3340902A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US535108A US3340902A (en) 1966-03-17 1966-03-17 Method and apparatus for forming tucked-in selvage
CH1767966A CH453245A (de) 1966-03-17 1966-12-12 Verfahren zum Herstellen einer festen Gewebekante auf einer schützenlosen Webmaschine und Einrichtung zur Durchführung des Verfahrens
DE19661535385 DE1535385B1 (de) 1966-03-17 1966-12-16 Einrichtung fuer Webmaschinen mit Entnahme des Schussfadens von ortsfesten Spulen zur Bildung einer festen Gewebekante auf der Austrittsseite eines Schussfadeneintragorgans
FR91606A FR1508564A (fr) 1966-03-17 1967-01-18 Procédé de production d'un bord de tissu solide sur un métier à tisser sans navette et dispositif pour la mise en oeuvre de ce procédé
GB3474/67A GB1119907A (en) 1966-03-17 1967-01-24 Method of producing a firm selvedge on fabric woven on a shuttle-less weaving loom and equipment for carrying out the method

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Application Number Priority Date Filing Date Title
US535108A US3340902A (en) 1966-03-17 1966-03-17 Method and apparatus for forming tucked-in selvage

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US3340902A true US3340902A (en) 1967-09-12

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Application Number Title Priority Date Filing Date
US535108A Expired - Lifetime US3340902A (en) 1966-03-17 1966-03-17 Method and apparatus for forming tucked-in selvage

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US (1) US3340902A (fr)
CH (1) CH453245A (fr)
DE (1) DE1535385B1 (fr)
FR (1) FR1508564A (fr)
GB (1) GB1119907A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443602A (en) * 1966-04-15 1969-05-13 Ruti Machinery Work Ltd Device and method for producing a selvedge
US3556162A (en) * 1967-10-20 1971-01-19 Enshu Seisaku Kk Apparatus for forming reinforced selvages of a fabric usable in combination with a shuttleless loom
US3951177A (en) * 1973-11-06 1976-04-20 Nuovo Pignone S.P.A. Devices for folding into the warp shed both ends of a weft thread in a fabric made by a shuttleless loom having a continuous weft supply mechanism
US4552187A (en) * 1984-01-23 1985-11-12 Maschinenfabrik Sulzer-Ruti Ag Weaving machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0134377B1 (fr) * 1983-09-01 1986-11-26 Maschinenfabrik Sulzer-Rüti Ag Dispositif pour replier les bouts de fil de trame dans un métier à tisser

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267287A (en) * 1939-08-26 1941-12-23 Sulzer Ag Selvage forming device for looms
US3100003A (en) * 1959-06-15 1963-08-06 Woven Arts Corp Machine for weaving web having relatively stiff weft
US3299912A (en) * 1963-09-12 1967-01-24 Saurer Ag Adolph Suction system for tensioning weft

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE679464C (de) * 1936-10-08 1939-08-05 Sulzer Akt Ges Geb Vorrichtung zum Weben mit Greiferwebschuetzen
DE725262C (de) * 1939-09-02 1942-09-18 Sulzer Ag Vorrichtung zum Herstellen fester Kanten bei Geweben
CH390821A (de) * 1961-06-14 1965-04-15 Sulzer Ag Webmaschinen mit Greiferschützen
FR1388178A (fr) * 1964-01-30 1965-02-05 Fischer Ag Brugg Georg Procédé et dispositif pour tendre et insérer les extrémités du fil de trame sur un métier à tisser à bobines de trame fixes
FR1407027A (fr) * 1964-09-09 1965-07-23 Saurer Ag Adolph Dispositif aspirant de métier à tisser

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267287A (en) * 1939-08-26 1941-12-23 Sulzer Ag Selvage forming device for looms
US3100003A (en) * 1959-06-15 1963-08-06 Woven Arts Corp Machine for weaving web having relatively stiff weft
US3299912A (en) * 1963-09-12 1967-01-24 Saurer Ag Adolph Suction system for tensioning weft

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443602A (en) * 1966-04-15 1969-05-13 Ruti Machinery Work Ltd Device and method for producing a selvedge
US3556162A (en) * 1967-10-20 1971-01-19 Enshu Seisaku Kk Apparatus for forming reinforced selvages of a fabric usable in combination with a shuttleless loom
US3951177A (en) * 1973-11-06 1976-04-20 Nuovo Pignone S.P.A. Devices for folding into the warp shed both ends of a weft thread in a fabric made by a shuttleless loom having a continuous weft supply mechanism
US4552187A (en) * 1984-01-23 1985-11-12 Maschinenfabrik Sulzer-Ruti Ag Weaving machine

Also Published As

Publication number Publication date
GB1119907A (en) 1968-07-17
FR1508564A (fr) 1968-01-05
DE1535385B1 (de) 1971-12-16
CH453245A (de) 1968-06-14

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Owner name: DRAPER CORPORATION,

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