US3626991A - Selvage-forming motion operable in conjunction with a filling-cutting mechanism of a shuttleless loom - Google Patents

Selvage-forming motion operable in conjunction with a filling-cutting mechanism of a shuttleless loom Download PDF

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Publication number
US3626991A
US3626991A US4362A US3626991DA US3626991A US 3626991 A US3626991 A US 3626991A US 4362 A US4362 A US 4362A US 3626991D A US3626991D A US 3626991DA US 3626991 A US3626991 A US 3626991A
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United States
Prior art keywords
filling
selvage
warp
cutter
shed
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Expired - Lifetime
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US4362A
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English (en)
Inventor
Franz Backenecker
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Georg Fischer AG
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Georg Fischer AG
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Publication date
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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
    • 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

Definitions

  • the loom also has a filling depressor and a filling clamp as shown in US. Pat. No. 2,604,123.
  • a cutter and its control devices are shown in copending US Pat. application Ser. No. 766,446, filed Oct. 10, 1968. in that application, it was one purpose of the invention to weave a fabric with nonfast selvages.
  • a tucking mechanism of any suitable type can be used at the opposite side to fonn a duplicate selvage there.
  • the inventive selvage-forming motion is characterized by the fact that the cutting devices consisting of the fixed cutter half and of the movable cutter half are provided with a taper on the right-hand side and on the left-hand side and that the movable cutter half carries a wedge-shaped thread separating piece so they may enter the warp, and also incorporates, first, a finger movable to a position in advance of the last pick inserted and at the very edge of the warp threads, and secondly, a comblike member which, at the proper time, enters the selvage warp threads at spaced points to press or beat the tucked end into place so it will be positively controlled against pulling the edge warp threads inwardly and also held in properly tucked relationship until locked by the locked or crossed warp threads.
  • FIG. I is a plan view of the right-hand side of the fabric and part of a loom with the insertion member being in inserting position.
  • FIG. 2 is a section through part of the loom and a side view of the cutting device, the cutting device being in operating position.
  • FIG. 3 is a view in the direction ofA of FIG. 2.
  • FIG. 4 is a diagram of the shedding motion of the ground warp ends. 7
  • FIG. 5 is a diagram of the shedding motion of the selvage warp ends.
  • FIG. 6 is a section showing the device to obtain the shedding motion for the selvage warp ends according to the diagram in FIG. 5.
  • FIG. 7 is a side view of the cutting mechanism with one embodiment of a tucked selvage end forming and holding means.
  • FIG. 8 is a view in the direction ofB ofFIG. 7.
  • FIG. 9 is a side view of the cutting mechanism with another embodiment of a tucked selvage end forming and holding means.
  • FIG. 10 is a view in the direction ofC of FIG. 9.
  • FIG. 11 is a side view showing still another embodiment of the invention with the cutter in raised position.
  • FIG. 12 is a similar view with parts in position to receive the weft.
  • FIG. 13 is a further view with the parts in cutting position and the tucked end under control.
  • FIG. 14 is a partial section at D-D, FIG. 12.
  • FIG. 1 is a plan view of the right-hand side of the fabric and parts of a loom with the filling insertion member in process of insertion, and showing a sley sword I with a sley 2, a reed 3 and a reed-clamping member 4.
  • Drawn into the reed 3 are the selvage warp ends 5 and the ground warp ends 6.
  • the warp ends 5 and 6'together with the filling 7 form the fabric 8.
  • These selvage and ground warp threads may or may not be of the same material and count.
  • the filling thread 9 beaten up last by the reed 3 forms the weaving line or fell 10.
  • the filling yarn 7 is bent at the selvage 12 to a hairpin shape and during the insertion process, each pick is presented to the cutting mechanism 14.
  • the filling portion 16 is cut by the cutting mechanism 114.
  • FIG. 2 one sees a side view of the cutting mechanism in operating position showing a shaft 17 on to which a fixed cutter half 18 is firmly and positively secured. Fixed for rotation on shaft 17 is a movable cutter half 19. Actuated by means not shown, the shaft can bring the cutting mechanism 14 from a rest position 20 to an operating position 21. The operating position 21 is reached when a nose 22 of the movable cutter half 19 rests against the stop 23.
  • the fixed cutter half 18 with its Mod 24 can be depressed against the tensioned spring 25 until the stud 24 rests against the end of the slot 26 in the movable cutter half 19, which represents the position attained in the actual cutting process. Furthermore, the position of these cutter parts relative to the sley 2, the reed 3, the fixing clamping member 4 and the warp ends 5 and 6 forming the shed 27 are shown. By way of illustration there are also shown a temple roller 28 and a temple cover 29.
  • FIG. 3 is a view in direction of A of FIG. 2 showing the cutting mechanism 14, consisting of a fixed cutter half 18 and a movable cutter half 19, which are mounted on the shaft I7.
  • the fixed cutter half has a taper at the left-hand side 30 and the movable cutter half has a taper at the right-hand side 31.
  • Soldered or otherwise fixed to the movable cutter half is a wedge-shaped thread separating sheet 32 which separated the selvage warp ends 5 and/or the ground warp ends 6 and protects them against damage by the cutter halves l8, l9.
  • FIG. 4 is a diagram showing the shedding motion of the ground warp ends.
  • the distance 34 represents each a cycle of a filling insertion.
  • the height 35 represents a measurement of the maximum warp shed opening whereas the distance 36 represents the crossing point of the shedding line 38.
  • the filling insertion member 11 enters the warp shed with the momentary height or warp opening 39 and at the moment t the filling portion I6 is cut by the cutting mechanism 14 whereby the hairpin I3 is freed.
  • the hairpin 13 extends itself so that the cut end comes to lie outside the selvage I2, FIG. I. If not completely outside, such tucked ends may escape sufficiently to spoil the appearance of the edge. To help eliminate this risk, suitable means are provided to control the shedding motion of the selvage warp ends 5 according to the diagram as per FIG. 5.
  • the distance 34 represents again a cycle of the filling insertion.
  • the shed height 60 is the maximum height, whereas at the moment I when the cutting mechanism cuts the filling portion 16, the selvage warp ends do no longer form a shed but lie in a sheet near each other and prevent the hairpin 13 from extending.
  • FIG. 6 is a sectional view of the device to obtain the shedding motion for the selvage warp ends according to the diagram in FIG. 5, showing a sley 2, a reed 3, a clamping member 4, a cutting mechanism 14, a temple roller 28 and a temple cover 29.
  • Guided by controlled heddles the selvage warp ends 5 form the bottom shed 42 and the top shed 43.
  • the heddles 41 are connected with connecting parts 44 to levers 45 which are borne for rotation in a bearing in a bracket 46.
  • the bracket 46 is attached to a loom part, not shown.
  • the levers 45 are provided with firmly attached studs 47 with rollers 48 rotatable on those studs.
  • the rollers are in contact with cams 49 arranged for alternate action on a shaft 50 which drives the cams synchronously with the filling insertion member 11 so that they rotate in the direction of 51.
  • the lower ends 52 of the heddles are provided with connections to traction springs 53 which are hooked into an anchoring point on the loom frame, not shown, and which by their tractive force pull the heddles 41 down, whereas the earns 49 via rollers 48 and levers 45 pull the heddles up.
  • FIG. 7 is a side view of the cutting mechanism with a loop former comprised as an operational part thereof, whereas FIG. 8 shows the same in end view in the direction of B, FIG. 7.
  • the loop former 54 has a hub 55 which is borne for rotation on a stud $6 and secured by a snap ring 57.
  • the stud 56 extends through the movable cutter half 19 in slot 26 and is firmly attached to the fixed cutter half 18. This is preferably the stud 24 extended.
  • Loop former 54 has an eye 58 into which a traction spring 59 is hooked with its one end, whereas its other end is hooked onto a stud 60, whereby the loop former is pulled by the tractive force of the spring against the stop 61.
  • the loop former 54 also has a sliding part 62 which is in contact with the cam section 63 of the temple cover 29 and keeps the point 64 on the axis D-D while the cutting mechanism 14 swings from the operative position into rest position or vice versa.
  • loop former 54 If the loop former 54 was firmly attached, its tip 64 would move along the circle line 65 which runs around the fulcrum 66 of the cutting mechanism 14, and in doing so it would push the hairpin forward. Thereby the hairpin 13 would extend itself and a properly tucked filling end could not be achieved.
  • FIG. 9 is a side view of the cutting mechanism with the embodiment of a holding comb and FIG. 10 is an end view in the direction of C, FIG. 9, showing a holding comb 68 which, with its foot or base 69, is screwed into the fixed cutter half 18 and extends around the movable cutter half 19 with its tips 70 projecting beyond the cutting edge 71.
  • the tips 70 of the holding comb 68 lock the hairpin 13 in the warp ends 5 and prevent the escape or extension of the tucked-in filling ends 67.
  • this example shows an alternative to the warp separating sheet 32, FIG. 8, consisting of a wire bent into wedge shape as at 73 which with its one end 74 is attached to the movable cutter half.
  • loop former 54 may be desirable to attach to a separate pivot on the blade 19 instead of on the fixed blade, as shown. At cutting, the point may only penetrate the loop a little deeper.
  • FIGS. 11-14 a still further modification will be described. This is mainly different in that a more precise control for the tucked end holding comb is provided. While most of the basic cutter parts are the same here, certain novel features will presently be explained.
  • the thread cutter consists of the cutter part 75 with the cutting edge 76, which is firmly attached to the shaft 17, FIGS. l1-13, being borne in the loom frame and driven by a cam, not shown, to pivot back and forth synchronously with the filling insertion cycle, of the stud 78 fixed to cutter part 75 and of the freely rotatable cutter part 79 with the cutting edge 80,
  • the thread cutter is in lifted position, FIG. 11, outside of the warp shed 27.
  • the thread cutter with its cutter part 79 at the distance equal to the selvage width from the outer edge of the selvage is pivoted into the warp shed until the stop nose 22 rests against the stop 23 which is fixed to the loom frame, FIG. 12.
  • the filling end connected to the selvage is placed in the notch 88 of the cutter part 79 and is cut at the right moment by the cutter part 75, FIG. 13.
  • the filling end connected with the carrier is pulled across the warp shed and the short filling end connected with the selvage is beaten up as a tuckedin end at the fell of the cloth.
  • a thread-shifting part 89 made of spring steel is rotatably borne with its hub part 90 on the stud 78 which is fastened to the cutter part 75.
  • To its vertical arm 91 is fixed the fork 92 which is adjustable in height, FIG. 14.
  • the horizontal arm is shaped as a fork 93 and engages with the stud 94.
  • the stud 94 forms one piece together with the plate 95 having a slot 96 and is screwed to the cutter part 79.
  • the thread-shifting part 89, 92 which is taken along, is additionally moved in the direction of the arrow 98 due to its forked articulation on the stud 94 and thereby pushes the tucked-in filling end in the direction of the fell of the cloth.
  • the stroke of the shifting movement can be altered by moving the plate 95 in the slot 96 and thus be adjusted to the most suitable conditions depending on the type of fabric and filling yarn.
  • a selvage-forming motion to obtain a cloth selvage with tucked-in filling ends for a shuttleless loom of the type having a stationary source of filling located outside the shed of a fabric being woven and reciprocating filling carriers functioning to draw filling from said supply in the form of a loop by a first carrier and then to transfer said filling to a second carrier by which an end thereof is extended across the shed as a completed pick, and a cutter movable to and from the warp shed with blades one of which is fixed for movement with an oscillatable shaft and another of which is free to rotate upon said shaft, and designated as a movable blade, characterized in that, said cutter blades are positioned inwardly from the edge of the complete warp to plunge down between selvage warp ends and body warp ends at a definite distance from the edge of the complete warp, and a selvage loop former comprised as an elongated finger is pivoted on a support projecting from one of the cutter blades and movable with that blade to
  • loop-forming finger is pivoted on a stud fixed in the fixed blade and extends through a slot in said movable blade.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
US4362A 1969-01-23 1970-01-20 Selvage-forming motion operable in conjunction with a filling-cutting mechanism of a shuttleless loom Expired - Lifetime US3626991A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH96769A CH486583A (de) 1969-01-23 1969-01-23 Vorrichtung zur Bildung einer Gewebekante mit eingelegten Schussfadenenden an einer Webmaschine

Publications (1)

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US3626991A true US3626991A (en) 1971-12-14

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US4362A Expired - Lifetime US3626991A (en) 1969-01-23 1970-01-20 Selvage-forming motion operable in conjunction with a filling-cutting mechanism of a shuttleless loom

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US (1) US3626991A (cs)
CH (1) CH486583A (cs)
CS (1) CS155228B2 (cs)
FR (1) FR2031172A5 (cs)
GB (1) GB1272542A (cs)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6058980A (en) * 1997-08-04 2000-05-09 Gividi-Italia S.P.A. Method for cutting a selvedge of a weft insertion side of a rapier loom
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
US9533855B2 (en) 2012-01-24 2017-01-03 Nike, Inc. Intermittent weaving splicer
US20170107648A1 (en) * 2014-06-13 2017-04-20 Picanol Selvedge forming device for a weft thread

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6058980A (en) * 1997-08-04 2000-05-09 Gividi-Italia S.P.A. Method for cutting a selvedge of a weft insertion side of a rapier loom
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
US20170107648A1 (en) * 2014-06-13 2017-04-20 Picanol Selvedge forming device for a weft thread
US9915015B2 (en) * 2014-06-13 2018-03-13 Picanol Selvedge forming device for a weft thread

Also Published As

Publication number Publication date
CS155228B2 (cs) 1974-05-30
DE2001929B2 (de) 1975-09-25
GB1272542A (en) 1972-05-03
DE2001929A1 (de) 1970-11-19
FR2031172A5 (cs) 1970-11-13
CH486583A (de) 1970-02-28

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