US3638686A - Carriers for filling insertion in a weaving machine - Google Patents

Carriers for filling insertion in a weaving machine Download PDF

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Publication number
US3638686A
US3638686A US91988A US3638686DA US3638686A US 3638686 A US3638686 A US 3638686A US 91988 A US91988 A US 91988A US 3638686D A US3638686D A US 3638686DA US 3638686 A US3638686 A US 3638686A
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United States
Prior art keywords
carrier
filling
carriers
clamping
pair
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Expired - Lifetime
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US91988A
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English (en)
Inventor
Ramon Sole
Othmar Bruhwiler
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Georg Fischer AG
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Georg Fischer AG
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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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers
    • D03D47/233—Carrying grippers

Definitions

  • the invention relates to a pair of carriers for filling insertion from a filling supply package positioned outside of the warp shed in a weaving machine, said carriers consisting of an inserting carrier and of a withdrawing carrier, both of which are provided with a thread clamping device or thread end holding means.
  • the filling coming from the last pick and connected at the cloth selvage is cut at the selvage, whereupon the withdrawing carrier moving outwards of the shed pulls the cut pick to the opposite cloth edge.
  • tip insertion the filling thread leading from one cloth selvage to a yarn supply package is caught by an inserting carrier provided with a clamping device whereby the filling thread is cut at the cloth selvage no later than when the inserting carrier enters the shed so that the free filling tip is carried ahead into the shed.
  • the filling tip is transferred to and clamped by the withdrawing carrier which entered the shed from the opposite side of the cloth.
  • the withdrawing carrier On the return of the withdrawing carrier the filling is, again with its tip ahead, pulled out over the other half of the cloth.
  • the loop insertion system due to its simple configuration of carriers (no clamping devices) is particularly suitable for fibrous yarns of fine and medium counts requiring handling by devices which are self cleaning.
  • a disadvantage of the loop insertion system is, however, that course yarns and slub yarns do not run well over the guiding surfaces of the carriers or through their tension means.
  • both systems ideally complement each other and are together in a position to insert a wide range of filling yarn.
  • To use both systems by way of choice on one and the same loom and with a reasonable changeover time has so far not been possible because of the fact that too many control elements for presenting the thread to the inserting carrier and also the thread cutting devices had to be exchanged and that the inserting carriers for the tip insertion system required a virtually vertical presentation of the filling yarn, which is not possible in the same way with the loop insertion system.
  • the task of the present invention is to create filling insertion members for tip insertion that can be used in a simple manner instead of the filling insertion members for loop insertion, whereby the control elements for loop insertion such as the filling depressor e.g., as per Swiss Pat. No. 464,106, and with slight modification, the multicolor filling control motion e.g., as per Swiss Pat. No. 465,524, and a filling cutting device e.g., as per copending US Patent application Ser. No. 68,859 filed Sept. 2, 1970 (Inventors: Anton Egloff and Oskar Bernath) can be used unchanged, and wherein only the timing of thread clamping, depressing and cutting within the insertion cycle have to be reset.
  • the control elements for loop insertion such as the filling depressor e.g., as per Swiss Pat. No. 464,106, and with slight modification, the multicolor filling control motion e.g., as per Swiss Pat. No. 465,524, and
  • the filling thread can be presented to the new inserting carrier in what is close to a horizontal position, similarly as for a loop insertion system.
  • a stationary control bar has to be provided to open the withdrawing carrier. This control bar can be fastened by two screws to the tape guide. The changeover from one system to the other requires only a few changes and adjustments and take a fraction ofthe time for a warp change.
  • the present invention is further characterized in that the inserting carrier is provided at its head with a warp end separating part which is approximately parallel to the reed, the upper edge of which has the shape of a rising, concave thread guide cam face and extends into an open thread groove which is overlapped by a horn, the tip of which projects out towards the reed, whereby the clamping point for the filling yarn is recessed in relation to the thread groove, and in that the withdrawing carrier is provided at its side opposite the reed with a front wall approximately parallel to the reed and having a shoulder that overlaps the tip of a horn which is provided at a movable clamping part that cooperates with a horizontal clamping bottom surface extending from the front wall towards the reed and to which a thread groove for the filling yarn release is joined toward the tip of the carrier.
  • FIG. 1 is a plan view of a filling control motion on a shuttleless loom showing the carriers shortly after the inserting carrier has caught the filling yarn,
  • FIG. 2 is a plan view of the same arrangement as in FIG. I, but after the transfer of the filling yarn to the withdrawing carrier,
  • FIG. 3 is a front view of the inserting carrier
  • FIG. 4 is a plan view of the inserting carrier of FIG. 3
  • FIGS. 50, 5b, 5c and 5d are front views of the inserting carrier of FIGS. 3 and 4, in four successive phases during the taking of the filling.
  • FIG. 6 is a front view of the withdrawing carrier which is designed to cooperate with the inserting carrier of FIGS. 3 and
  • FIG. 7 is a plan view of the withdrawing carrier of FIG. 6,
  • FIG. 8 is a plan view illustrating the operation of both carriers at filling transfer
  • FIG. 9 is a vertical section across the left hand tape guide showing the opening mechanism for the withdrawing carrier.
  • FIG. 10 is a section across the inserting carrier along the line XX in FIG. 4.
  • FIG. 1 is a plan view showing a filling control motion of a shuttleless loom with single pick insertion by means of an inserting carrier and a withdrawing carrier functioning according to the tip insertion system.
  • a control housing 2 On a girt l of the weaving machine (not shown in great detail) is mounted a control housing 2 with a camshaft 6 borne in two bearings 3. This cam shaft 6 is driven by means (not shown) synchronously with the movements of the reciprocating filling insertion members 4 and is equipped with a plurality of cams 5.
  • the control movements of the rotating cams 5 are transferred to pushing rods 9, l0, l1 and 12 provided with cam following rollers 7, said pushing rods being horizontally movable in guides in a bar 13.
  • the pushing rod 9 is provided with teeth 14 that mesh with a pinion 15 on a shaft 118 that is borne in bearings 16 and 17.
  • This pinion shaft 18 operatively supports the filling cutting device which as a whole is identified by numetal 19.
  • the end 20 of the shaft 18 extending towards the cloth allows setting the filling cutting device 19 to the required cloth width.
  • the filling cutting device 19 is arranged on the pinion shaft 18 so that its cutter members 21, 22 can move up and down outside the warp ends 23 of a ground cloth, i.e., adjacent to the cloth selvage 24.
  • the pushing rods 30, ll act via double levers 26 linked in bearings 27 and provided with rollers upon a filling depressor 28, the purpose of which is to bring the filling yarn 29 from an inclined position into a more level or horizontal position to allow the filling yarn to be taken over by an inserting carrier 36 of the filling insertion member 4.
  • the rollers 25 are pressed against the pushing rods 10 and 11, respectively, by traction springs (not shown).
  • the pushing rod 12 is connected to a rod 33 movable in guides 31 and provided with a pressor 32, said rod being spring loaded by compression spring 34 against the pushing rod 12.
  • the presser 32 acts upon a filling clamp 35 consisting of two flat springs 37 fixed in two studs 36 and ofa counter or backing stud 38.
  • lay sword 39 there are a lay sword 39, a lay 40 with a read 41 and a raceway 42 as support for the warp ends 23 and the flexible type tape filling insertion member 4 running in the tape guide 43.
  • the filling thread 45 forming the cloth 44 together with the warp ends 23 have free ends 46 at the selvage 24.
  • the filling yarn 29 now leads from the inserting carrier 30 through a filling positioner 50, the filling clamp 35 and a protector shield with eyelet 51 to a filling supply package 52 and is inserted with the thread tip 53 which was cut off from the last beaten-up pick as the leading end of the pick.
  • FIG. 2 shows the same arrangement at a later moment of the filling insertion cycle, after the filling tip 53 has been trans ferred from the inserting carrier to the withdrawing carrier. Unlike the otherwise identical FIG. 1, this FIG. 2 shows the withdrawing carrier 54 in which the filling is held fast by a thread clamp 55, so that the pick is also pulled out of the shed with its tip or leading end 53 ahead.
  • FIG. 3, 4 and 10 show the inserting carrier 30.
  • a carrier body 57 firmly connected to a steel tape 4 is provided with a backwall 59 facing the read with a cover surface 60 and with a thread clamping device 48 mounted at the front, which together form a tunnel shaped hollow space 58 for the en trance of the withdrawing carrier.
  • the backwall 59 is formed as a warp separating part 61 with a concave guiding cam 62 and an adjacent open thread groove 63. Shown in FIG. 3, the open thread groove 63 is overlapped by a horn 64 pointing to the warp separating part 61 so that any possible loose warp ends 23 cannot get into the thread groove 63.
  • a clamping bottom member 65 is also fastened to the carrier body 57 by means of screws 66.
  • Cooperating with the clamping bottom member 65 is the clamping piece 69 situated above the clamping bottom member, said clamping piece being freely guided at one end in the hole 67 of the cover surface 60 and at the other end by a stud 68 in a hole of a small lug 70 fixed to the clamping bottom member 65.
  • Pressed into the clamping bottom member 65 is a stud 71 the upper end of which engaging in a hole of the flat spring 73.
  • Centered in another hole of the flat spring 73 is a ball 75 supported by the clamping piece 69.
  • An adjusting screw 76 threaded into the clamping bottom member 65 and positioned between stud 71 and ball 75 allows one to set the clamping pressure between clamping bottom member 65 and clamping piece 69, whereby the clamping force is transmitted at one point from the flat spring 73 via ball 75, securing an advantageous clamping contact.
  • the clamping piece 69 is provided with a flat intake cam face 78 meeting the clamping bottom member 65 at its top surface.
  • the receding back part 81 of the cover surface 60 gives good access from above to the adjusting screw 76 for resetting purposes, while the screw is still sufficiently covered against contact with loose warp ends.
  • FIGS. 5a, 5b, 5c and 5d show front views of the inserting carrier in four phases a to (1 during filling takeover or pickup.
  • FIG. 5a shows the inserting carrier 30 running in toward the filling 29 leading from the cloth selvage 44 to a filling positioner 50.
  • the filling 29 is first contacted by the concave guiding cam 62 by which, even if the filling is sagging, it is centered until the yarn tension in the filling 29 is increased by the forward movement of the inserting carrier 30 in direction of the arrow 82, so that the filling is safely guided into the thread in take opening 80, FIG. 4.
  • the filling depressor 28 has not yet contacted the filling 29.
  • the filling depressor 28 has reached its bottom center position. Thereby the filling 29 is pulled down and into the open thread groove 63.
  • FIG. 5d shows the entrance of filling 29 into the intake cam 78, FIG. 3, of the clamping piece 69.
  • FIG. 6 is a front view and FIG. 7 a plan view of the withdrawing carrier 54.
  • a steel tape 4 is fixed to the carrier body 87 which has in its U-shaped recess 88, open at the top, a clamping piece 90 pivotably mounted on axis 89, consisting of an opener part 91 and of a clamping lever part 92 with a horn 93.
  • the front wall 94, facing away from the reed, of the U-shaped section 88 is provided with a shoulder 96 projecting beyond the tip 95 and leading to the same plane formed by the surface of the horizontal clamping bottom 97 which is mounted under the hook 93 on the inside of the wall 94.
  • Front wall 94 and horn 93 extend towards the carrier tip 100 of the front wall.
  • the tapered intake section 101 at the bottom of the horn 93 together with the clamping bottom 97 form the thread clamping device of the withdrawing carrier 54.
  • the intake section 101 can be lifted off the clamping bottom, whereby the clamping effect is cancelled and a clamped thread runs at once into the notches 98, 99 whereby it is released.
  • a spring plate 107 having a nose 108 bent toward the carrier tip 100 is fastened to the front wall 94 by means of a plate and screws 106.
  • the nose 108 forces the thread end 53 of a filling yarn 29 clamped between clamping bottom 97 and horn 93 to take a hair pin shape, which causes an increased clamping effect and, particularly when using stiff yarn, makes it possible to clamp it securely.
  • FIG. 8 illustrates the filling transfer from the inserting to the withdrawing carrier.
  • the filling 29 presented by the inserting carrier 30 in an angular configuration 110 formed over the groove end 84 and the thread clamping point 79 is inserted into the withdrawing carrier between horn 93 and shoulder 96.
  • the filling yarn 29 runs under the horn 93, FIG. 7, where it is clamped and pulled out of the thread clamping point 79 of the inserting carrier 30.
  • the angle 110 of the presented filling 29 is only this position and condition guarantees that the tip 95 is covered (seen in the direction of the warp ends) by the front wall 94 or the shoulder 96, and that the filling is safely inserted without harm to the warp.
  • FIG. 9 shows a section across the left hand tape guide with the opening mechanism for the withdrawing carrier.
  • the pair of carriers as heretofore described allows a filling yarn insertion by tip insertion, by simple change of carriers and without doing more than making adjustments of the filling control devices in a loom otherwise equipped and operable for the loop insertion system.
  • the possibility of damaging loose warp ends is excluded with both carriers in that the horn 64 of the insertion carrier and the horn 93 of the withdrawing carrier are overlapped. This overlapping is in turn possible due to the oblique position of the filling in the carrier.
  • a pair of carriers for the filling insertion from a supply package positioned outside of the warp shed on a weaving machine consisting of an inserting carrier and a withdrawing carrier each being provided with a thread clamping means, characterized in that, the inserting carrier (30) is provided at its head with a warp end separating part (61) extending virtually parallel to the reed (41) of the weaving machine, the upper edge (62) of the warp separating part having the shape of a rising, concave thread guide cam face which terminates in an open thread groove (63) extending downwardly and which is overlapped by a horn (64) running out toward the reed, clamping means (48) and (69) having a clamping point (79) for the filling yarn (29) which is setback and substantially on a level with the terminal portion of thread groove (63), and further in that the withdrawing carrier (54) on its side facing away from the reed is provided with a front wall (94) disposed virtually parallel to the reed, a clamp

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US91988A 1969-11-27 1970-11-23 Carriers for filling insertion in a weaving machine Expired - Lifetime US3638686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1776769A CH502461A (de) 1969-11-27 1969-11-27 Greiferpaar für den Schusseintrag in einer Webmaschine

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US3638686A true US3638686A (en) 1972-02-01

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US91988A Expired - Lifetime US3638686A (en) 1969-11-27 1970-11-23 Carriers for filling insertion in a weaving machine

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US (1) US3638686A (enrdf_load_stackoverflow)
JP (1) JPS491029B1 (enrdf_load_stackoverflow)
CH (1) CH502461A (enrdf_load_stackoverflow)
CS (1) CS149942B2 (enrdf_load_stackoverflow)
FR (1) FR2072516A5 (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874420A (en) * 1973-10-23 1975-04-01 Rockwell International Corp Weft inserting carrier
US3901284A (en) * 1973-01-22 1975-08-26 Saurer Diederichs Sa Weft carrier for a shuttleless loom
US3926225A (en) * 1973-02-20 1975-12-16 Lebocey Industrie Gripper point for loom projectiles with an external feed
US3931837A (en) * 1975-03-05 1976-01-13 Rockwell International Corporation Carrier for shuttleless loom
US3986532A (en) * 1975-09-23 1976-10-19 Rockwell International Corporation Weft extending carrier
US4054159A (en) * 1973-10-04 1977-10-18 Societe Alsacienne De Constructions Mecaniques De Mulhouse Picking method for a shuttleless weaving machine
US4062382A (en) * 1975-09-24 1977-12-13 Ruti Machinery Works Ltd. Extending carrier for looms with removal of the filling yarn from stationary bobbins
US4143683A (en) * 1975-10-03 1979-03-13 Societe Alsacienne De Constructions Mechaniques De Mulhouse Device for controlling and cutting the weft threads in looms with weft inserters
US4605045A (en) * 1985-09-13 1986-08-12 Wu Lien Shin Gripping apparatus for shuttleless looms

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3842867A (en) * 1973-03-22 1974-10-22 Rockwell International Corp Weft inserting carrier
CH592761A5 (enrdf_load_stackoverflow) * 1975-09-29 1977-11-15 Rueti Ag Maschf
JPS52126942U (enrdf_load_stackoverflow) * 1976-03-18 1977-09-27
CH634615A5 (en) * 1979-01-30 1983-02-15 Rueti Ag Maschf Feed gripper for weaving machines with extraction of the weft thread from fixed bobbins
CH682571A5 (de) * 1990-09-05 1993-10-15 Gividi Di Diego Armando Scari Bringergreifer an einer Greiferwebmaschine.
IT1251304B (it) * 1991-09-11 1995-05-08 Somet Soc Mec Tessile Coppia di pinze portante-traente per telai di tessitura senza navetta con trasporto della trama rispettivamente in un piano obliquo e verticale

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3390707A (en) * 1965-05-20 1968-07-02 Nuovo Pignone Spa Weft-carrying mechanism for weaving looms having a continuous weftsupply mechanism
CH482852A (it) * 1967-09-19 1969-12-15 Somet Soc Mec Tessile Coppia di pinze di trasporto della trama per telai di tessitura ad alimentazione continua della trama

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3390707A (en) * 1965-05-20 1968-07-02 Nuovo Pignone Spa Weft-carrying mechanism for weaving looms having a continuous weftsupply mechanism
CH482852A (it) * 1967-09-19 1969-12-15 Somet Soc Mec Tessile Coppia di pinze di trasporto della trama per telai di tessitura ad alimentazione continua della trama

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3901284A (en) * 1973-01-22 1975-08-26 Saurer Diederichs Sa Weft carrier for a shuttleless loom
US3926225A (en) * 1973-02-20 1975-12-16 Lebocey Industrie Gripper point for loom projectiles with an external feed
US4054159A (en) * 1973-10-04 1977-10-18 Societe Alsacienne De Constructions Mecaniques De Mulhouse Picking method for a shuttleless weaving machine
US3874420A (en) * 1973-10-23 1975-04-01 Rockwell International Corp Weft inserting carrier
US3931837A (en) * 1975-03-05 1976-01-13 Rockwell International Corporation Carrier for shuttleless loom
US3986532A (en) * 1975-09-23 1976-10-19 Rockwell International Corporation Weft extending carrier
US4062382A (en) * 1975-09-24 1977-12-13 Ruti Machinery Works Ltd. Extending carrier for looms with removal of the filling yarn from stationary bobbins
US4143683A (en) * 1975-10-03 1979-03-13 Societe Alsacienne De Constructions Mechaniques De Mulhouse Device for controlling and cutting the weft threads in looms with weft inserters
US4605045A (en) * 1985-09-13 1986-08-12 Wu Lien Shin Gripping apparatus for shuttleless looms

Also Published As

Publication number Publication date
CS149942B2 (enrdf_load_stackoverflow) 1973-08-23
FR2072516A5 (enrdf_load_stackoverflow) 1971-09-24
DE2054788B2 (de) 1976-11-04
JPS491029B1 (enrdf_load_stackoverflow) 1974-01-11
CH502461A (de) 1971-01-31
DE2054788A1 (de) 1971-06-03

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