US3102557A - Means and method for forming a weft-loop selvage - Google Patents

Means and method for forming a weft-loop selvage Download PDF

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Publication number
US3102557A
US3102557A US141482A US14148261A US3102557A US 3102557 A US3102557 A US 3102557A US 141482 A US141482 A US 141482A US 14148261 A US14148261 A US 14148261A US 3102557 A US3102557 A US 3102557A
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United States
Prior art keywords
weft
needle
loop
fabric
lever
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Expired - Lifetime
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US141482A
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English (en)
Inventor
Roger W Gustavson
Melville C Mosher
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Crompton and Knowles Corp
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Crompton and Knowles Corp
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Application filed by Crompton and Knowles Corp filed Critical Crompton and Knowles Corp
Priority to US141482A priority Critical patent/US3102557A/en
Priority to GB43455/61A priority patent/GB989075A/en
Priority to BE611882A priority patent/BE611882A/fr
Priority to DE19621535323 priority patent/DE1535323B1/de
Priority to CH105062A priority patent/CH430608A/de
Application granted granted Critical
Publication of US3102557A publication Critical patent/US3102557A/en
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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
    • D03D47/42—Forming selvedges by knitting or interlacing loops of weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D35/00—Smallware looms, i.e. looms for weaving ribbons or other narrow fabrics

Definitions

  • ATTORNEY 3,102,557 MEANS AND METHOD FOR FORMING A WEFT-LOOP SELVAGE Filed Sept. 28, 1961 Sept. 3, 1963 R. w. GUSTAVSON ETAL 3 Sheets-Sheet 2 INVENTORS 49 ROGER W. GUSTAVSON MELVILLE C. MOSHER c iaaft HONJQQY ATTORNEY Sept. 3, 1963 R. w. GUSTAVSON ETAL 3,102,557
  • Another object of the invention is to provide a support for the fabric being woven and means extending along the width of the fabric to engage and to maintain the latter on the support such that the fabric and support therefor can be utilized as a reference point toward and from which the loop-forming means can be automatically adjusted during loom operation to form the desired size of loop.
  • Another object of the invention is to mount the loopforming means for reciprocation and rotation on rotatable reciprocating means adjustable to be raised and lowered with respect to the reference point.
  • Another object of the invention is to mount the loopforming means on a ro'ckable lever system operating to reciprocate the needle backwardly and forwardly and also operating to rotate the same during reciprocation thereof to enable the needle on its forward movement to hook the weft.
  • a further object of the invention is to mount the: needle and its hook so that it moves rearwardly and upwardly along a path extending over the weft and also movable forwardly and downwardly along the same path in timed relation with insertion of the weft through the shed while the weft is moving from a back position to a forward position to enable the needle to grasp the weft when the latter is in its fonward positionf t
  • a further object of the invention is to operatively connect drive means to one of the links to effect reciprocation of the entire lever system as well as partial rotation upwardly and downwardly of one of the levers to effect movement of the needle along the previously-mentioned path.
  • a further object of the invention is tomove the loop forming means along said path in relation to the weft inserting means in a manner such that the loop forming means will intersect a horizontal plane in which the weft moves to engage the latter whether the needle is of the arcuate type moving in and out of the shed along the same arc, or of the type in which the weft needle moves into and through the shed along one curvilinear path and retracted out of the shed along a different curvilinear path.
  • It is a further object of the invention to provide an improved method of forming a knitted selvage including the steps of moving a weft through a shed from a rear to a forward position in a manner to provide a bend in the weft outside and adjacent the edge of the fabric, swinging a hook needle adjacent the fabric rearWa-rdly and upwardly albove the weft during emergence thereof from the shed, swinging the needle forwardly and downwardly in the same said path to loop the weft during movement of the latter to its forward position, and thereafter drawing the Weft loop through a previously formed loop to form a weft-loop or knitted selvage.
  • FIG. 1 is a side elevational view of part of a needle loom having the preferred form of the invention applied thereto,
  • FIG. 2 is a plan view looking in the direction of arrow 2, FIG. 1,
  • FIG. 1 A first figure.
  • FIG. 6 is a vertical section on line 66, FIG. 2,
  • FIG, 7 is a view similar to a part of FIG. 1 and showing certain of the parts adjusted to a different position
  • FIGS. 8-13 are operational views illustrating the mode of operation of the preferred form of the invention.
  • FIG. 14 is a diagrammatic view illustrating the path of travel of the weft loop forming means as it relates to the preferred form of the invention
  • FIGS. 15-17 show a modified form of the invention.
  • FIG. 18 shows a diagrammatic view of the operation of the loop forming means as it relates to the modified form of the'invention.
  • a loom frame generally designated at 1 supports a cross channel 2 to which a bearing stand 3 is aflixed in any approved manner, there being a pair of such bearing stands but only one being shown, namely, stand 3.
  • the loorn frame 1 inincludes a rear portion 4 which supports a drive shaft (not. shown) to which is operatively connected 2.
  • drive chain or belt 5 trained around a driven wheel 6.
  • Wheel 6 is fast on a jack shaft 7 which is suitably supported on rear portion 4 and which carries a crank *8 to which one end of a crank arm 9 is pivoted as at 10.
  • crank arm 9 is operatively connected as at :11 to a lever system generally indicated by the reference character 12, said lever system including a vertically rockable drive lever 13, a reciprocating vertical lever 14, a reciprocating comparatively'shorter vertical lever 15 and a rotatable reciprocating iconnecting'link 16.
  • the lever 14 is aligned with, behind of, and some what longer than lever 15 and is keyed to a rotatable pivot shaft '17 while lever 15 is freely pivoted on a normally stationary pivot stud 1 8 located forward of and higher than pivot 17.
  • Levers 14 and 15, link 16 and pivots 17 and 1 8 constitute a 4-bar linkage system to reciprocate levers 14 and 15 while at the same time causing rocking of link 16.
  • Pivot shaft 17 is operatively connected to the previously described rockable drive lever 13, and both may be considered as drive means to effect rocking or reciprocation of the pair of levers 14 and 15 as well as link '16.
  • Cross channel 2 has fixed thereto as at 20 a table and fabric support 21 along the top of which the fabric F travels during loom operation.
  • Fabric support 21 extends rearwardly as at 22 somewhat near the fell 23 and as can be seen in FIGS. 1 and 2, the table or support 21 being slightly wider than the width of the fabric being woven.
  • an elongated pressure bar 25 Adjacent and above end 2-2, an elongated pressure bar 25 is rotatably supported on a bearing member 26, see
  • FIGS. 1 and 2 which extends across the width of the fabric, as does bar 25, and thence forwardly as at 27 and is provided with a turn 28 and a tail 29, the latter being yield-ingly held by a clamping bar 30' and screws 31 passing through bar 30 and screwed into support 21.
  • a spring 33 fast on tail 29 has an end portion 34 to engage part 27 and biased in a direction to resiliently hold bar 25 pressed against the fabric F to prevent lifting thereof from its support 2 1.
  • the fabric and the top 35 of the table constitute a reference point to be further discussed hereinafter. It is to be understood that bar 25 need not be circular as shown and that it may be of any desired shape and need not necessarily rotate to maintain the fabric F on support 21.
  • Table 21 supports a stub shaft 36 which extends vertically through'the table, and at the lower end of stub shaft 36 a lever 37 is held thereto, see FIG. 2, in any well known manner.
  • Lever 37 carries a weft inserting needle means '38 secured in a bearing 39 on lever 37, the needle being provided with a weft eye 40 through which a weft thread W passes to the fabric from a weftcone, not shown but well known.
  • Lever 37 is actuated by the lay, also not shown, and inserts eye 40- and the weft thereat through warp sheds along an arouate path 41, see FIG.
  • Needle 3'3 and the actuating mechanism therefor for-1n no part of the present invention except as set forth hereinafter, the needle and actuating mechanism being shown for instance in Patent No. 1,968,755 issued to Fowler July 31, 1934.
  • connection link 16 is mounted on a shouldered cap screw pivot 43 (see FIG. *6) at the upper end of lever 14, and the forward end 44- is on. a shouldered cap screw pivot 45 on the upper end of lever 15 such that link 16 is between the levers and support 21 adjacent thereto as illustrated in FIG. 2.
  • Link :16 supports a reciprocating loopforming needle means 46 at the top thereof and, as can be seen in FIG. 6', needle 46 is clamped to link 16 by a plate 47 held fast to link 16 by a screw 48. Needle 46-fits into a groove 49 in link 16 and a ledge 50' on plate 47 firmly holds needle 46 in groove 49 against relative movement therebetween. As can be clearly seen in FIGS.
  • loop-forming needle 46 at the rear end thereof has a rearwardly facing curved hook 51 cooperating with a latch 52 to grasp and hold the weft and form a weft-loop 53' of the usual type as shown in FIG. 7.
  • Hook 51 and latch 52 are constantly rearward of end 42 ofsupport .21.
  • a guide bracket 54 is attached to table 21 in any approved manner and is provided respectively with .front and rear bearings 55 and 56 both of which support a rotatable adjusting bolt 57, as can readily be seen in FIG. 5.
  • the right-hand end of bolt 5 7 has a head 58 with a shoulder 59 to bear bearing 56. Shoulder 59 and collar 62 prevent movement of bolt 57 in a direction parallel to its axis but permits rotation of bolt 57 concentric with its axis.
  • pivot L8 is provided with a lug 64 which extends into and snugly fits a slot 65 in guide bracket 54 to prevent turning of pivot 18.
  • bolt 57 is screw threaded as at 66 between bearings 55 and 56 to'receive a threaded part 67 of pivot 18.
  • Head 58 is provided with a slot 68 and rotation of bolt 57 on its axis will cause pivot 18 to travel along screw threads 66 so that lever 15 and its pivot 18 may be adjusted toward and away, depending upon direction of rotation of bolt 57, from lever 14 and its pivot 17. As illustrated in FIG.
  • lever 15 and its pivot 18 have been moved along bolt 5'7 in a direction away from lever 14 and its pivot 17 relative to the position of lever 15 as shown in FIG. 1.
  • head 58 is in the open so that a tool can be readily inserted in slot 68 to rotate bolt 57 clockwise and anticlockwise to automatically adjust pivot 18 and lever 15 :31; described just above for a reason set forth herein- K ter.
  • FIG. 8 shows the beginning of a loop-forming cycle in which a reed R is in forward beat-up position with the warp threads just about to cross and the needle 46 forwardly in loop retaining position.
  • the reed will move rearwardly as is usual and the warp threads 74 and 71 will cross and open to form a shed for insertion of the needle 38 and weft W therethrough.
  • FIG. 9 shows partial reciprocation of the needle 46 rearwardly and partial rotation thereof during partial insertion of the weft W (not shown) by the needle 38 (also not shown).
  • FIG. 10 shows the weft inserted through the shed and in a position corresponding to the full lines in FIGS. 4 and 14.
  • bolt 57 may be rotated manually during loom operation in either one of two directions to raise or lower the needle 46 with respect to the fabric and fabric support top 35 which can be considered as a reference point toward and away from which needle 46 may be adjusted to effect loosening or tightening of selvage S as the case may warrant.
  • FIG. 7 bolt 57 has been rotated so that pivot 18 has been moved upwardly and away from pivot 17 to change the relationship of levers 14 and 15 and cause rotation of link 16 to swing needle 46 slightly downwardly away from top 35. This will produce a larger loop as compared to those formed by needle 46 in FIG. 1 wherein the needle has been adjusted to be closer to the fabric and top than that shown in FIG. 7. It will be seen that rotation of bolt 57 will automatically cause an adjustment of needle 4s toward and away from top 35, depending upon which direction the bolt is rotated.
  • needle 46 In the modified form of the invention as shown in in all respects to needle 46, will operate in a similar manner as does needle 46 and moves rearwardly and upwardly as shown in FIG. 18 and then forwardly and downwardly along the same path during which time the weft W1 moves in the direction of arrow b such that the hook '81 of needle engages the weft, at which time needle 76 is retracted in a manner to wrap the weft W1 over the needle 80 as can be readily seen in FIG. 17.
  • the weft forming needle 80 will move downwardly and forwardly to pass the weft thread through a previously formed loop in the same manner as that in the preferred form of the invention.
  • a table 82 similar to table 21, is provided to support the fabric F.
  • the weft needle and mode of operation may be similar to that shown in Turner Patent No. 2,625,959 issued January 20; 1953.
  • movement of the knitting needle is related to movement of the weft from a rear to a forward position to effect pick-up of the weft before the needle and weft are retracted, thereby preventing a mispick.
  • simple means are provided to wrap the weft around the knitting needle to insure engagement of the hook of the needle in order to form a loop.
  • a method and means has been provided to form loops whether the weft inserting means is of the type that moves in and out of the shed along the same path or the type thatmoves along one curvilinear path through the shed and along a different curvilinear path when being retracted.
  • said means extending along the width of the fabric includes an elongated bar on a bearing member biased in a direction to cause engagement of said bar with said fabric to prevent lifting thereof from its support.
  • said drive means includes a crank, a vertically reciprocable lever and a crank arm, said crank arm being between the crank and said lever and operatively connected thereto.
  • said adjustable means includes a guide bracket having a slot therein, a stud for said other of said rocking means and provided with a lug snugly fitting and slidable in said slot, a 'bolt passing through said stud and journaled on said guide bracket for rotation with respect thereto, the stud being automatically adjustable along the bolt upon rotation thereof to raise and lower said stud depending upon direotion'of rotation of said bolt.
  • a four-bar linkage system including a pair of vertical levers, a rotatable link pivotally attached to the upper end of each lever, a
  • a first vertical lever movable back and forth during loom operation
  • a second vertical lever also movable back and forth with said first vertical lever
  • a link connecting both levers and movable back and forth therewith
  • a loop-forming hook needle fixed to said link and movable back and fonth therewith to hook said weft to form weft loops
  • a first pivot for said first lever a vertically reciprocating third lever operatively connected to said first lever to elfect back and forth movement of said first and second levers

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US141482A 1961-09-28 1961-09-28 Means and method for forming a weft-loop selvage Expired - Lifetime US3102557A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US141482A US3102557A (en) 1961-09-28 1961-09-28 Means and method for forming a weft-loop selvage
GB43455/61A GB989075A (en) 1961-09-28 1961-12-05 Means and method for forming a weft-loop selvage
BE611882A BE611882A (fr) 1961-09-28 1961-12-22 Dispositif et procédé pour former une lisière avec des boucles de trame
DE19621535323 DE1535323B1 (de) 1961-09-28 1962-01-16 Nadelwebmaschine mit einer Fuehrung der Zungennadel zum Stricken einer Webkante
CH105062A CH430608A (de) 1961-09-28 1962-01-29 Webstuhl, bei dem ein Schussfaden in Fächer eingetragen wird

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US141482A US3102557A (en) 1961-09-28 1961-09-28 Means and method for forming a weft-loop selvage

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US3102557A true US3102557A (en) 1963-09-03

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US141482A Expired - Lifetime US3102557A (en) 1961-09-28 1961-09-28 Means and method for forming a weft-loop selvage

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US (1) US3102557A (de)
BE (1) BE611882A (de)
CH (1) CH430608A (de)
DE (1) DE1535323B1 (de)
GB (1) GB989075A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403706A (en) * 1966-09-22 1968-10-01 Crompton & Knowles Corp Narrow fabric loom
US3752195A (en) * 1970-03-23 1973-08-14 Riordan J Loom
EP0025135A1 (de) * 1979-08-28 1981-03-18 Yoshida Kogyo K.K. Mechanismus zum Bewegen der Kantenstricknadel einer schützenlosen Webmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2130636A (en) * 1936-09-19 1938-09-20 Clutsom Charles Looms with stationary weft supplies
US2469202A (en) * 1948-05-01 1949-05-03 Harry Dexter Peck Loom attachment for weaving ladder webbing
US2918093A (en) * 1958-07-01 1959-12-22 Moore Fabrics Inc Shuttleless loom
FR1249099A (fr) * 1959-02-26 1960-12-23 Brevitex Ets Exploit Dispositif pour le tissage de rubans, courroies et articles similaires
US2980146A (en) * 1958-04-03 1961-04-18 Continental Elastic Corp High speed loom

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT158884B (de) * 1936-10-10 1940-06-10 Charles Clutsom Vorrichtung an Webstühlen mit feststehender Schußspule.
US2180831A (en) * 1937-02-26 1939-11-21 Carl F Libby Shuttleless loom
CH219906A (de) * 1940-06-15 1942-03-15 Clutsom Charles Webstuhl mit stationärem Schussfadenvorrat.
US2902057A (en) * 1957-11-26 1959-09-01 Crompton & Knowles Corp Weft needle operating mechanism for loom
FR1219600A (fr) * 1958-04-03 1960-05-18 Perfectionnements aux métiers à tisser sans navette

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2130636A (en) * 1936-09-19 1938-09-20 Clutsom Charles Looms with stationary weft supplies
US2469202A (en) * 1948-05-01 1949-05-03 Harry Dexter Peck Loom attachment for weaving ladder webbing
US2980146A (en) * 1958-04-03 1961-04-18 Continental Elastic Corp High speed loom
US2918093A (en) * 1958-07-01 1959-12-22 Moore Fabrics Inc Shuttleless loom
FR1249099A (fr) * 1959-02-26 1960-12-23 Brevitex Ets Exploit Dispositif pour le tissage de rubans, courroies et articles similaires

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403706A (en) * 1966-09-22 1968-10-01 Crompton & Knowles Corp Narrow fabric loom
US3752195A (en) * 1970-03-23 1973-08-14 Riordan J Loom
EP0025135A1 (de) * 1979-08-28 1981-03-18 Yoshida Kogyo K.K. Mechanismus zum Bewegen der Kantenstricknadel einer schützenlosen Webmaschine
US4331181A (en) * 1979-08-28 1982-05-25 Yoshida Kogyo K.K. Selvage-knitting needle mechanism for use in a shuttleless loom

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Publication number Publication date
CH430608A (de) 1967-02-15
GB989075A (en) 1965-04-14
BE611882A (fr) 1962-06-22
DE1535323B1 (de) 1970-12-03

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