US2548663A - Weft needle mechanism for axminster looms - Google Patents
Weft needle mechanism for axminster looms Download PDFInfo
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- US2548663A US2548663A US758642A US75864247A US2548663A US 2548663 A US2548663 A US 2548663A US 758642 A US758642 A US 758642A US 75864247 A US75864247 A US 75864247A US 2548663 A US2548663 A US 2548663A
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- needle
- loom
- weft
- axminster
- looms
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D39/00—Pile-fabric looms
- D03D39/02—Axminster looms, i.e. wherein pile tufts are inserted during weaving
Definitions
- This invention relates to improvements in weft needles for looms more particularly. of the AX- minster type and it is the general object of our invention to provide a flexible needle formed of sheet metal curved transversely to provide rigidity.
- Fig. 1 is a side elevation of a portion of an Axminster loom having our invention applied thereto,
- Fig. 2 is a front elevation looking in the direction of arrow 2, Fig. 1,
- Fig. 3 is an enlarged vertical section on line 33 of Fig. 2 showing the needle driving mechanism
- Figs. 4, and 6 are enlarged vertical sections on lines 44, 5-5 and 6-'B, respectively, of Fig. 2.
- Fig. '7 is an enlarged plan view of the eye end of the needle looking in the direction of arrow 1, Fig. 2,
- Fig. 8 is an enlarged plan looking in the direction of arrow 8, Fig. 2, showing the selvage shuttle, the needle and the thread guide at the right side of the loom,
- Fig. 9 is a vertical section on line 99, Fig. 3,
- Fig. 10 is a vertical section through the warp shed showing the needle between the top and bottom sheds
- Fig. 11 is a horizontal section on line l
- the loom frame In supports a pullover shaft H around which extends a tube frame transporting chain 42.
- the tube frame transfer arms one of which is shown at E3 in Fig. 1, disconnect the tube frames one at a time from the chains 12 and move them down in the usual manner to tuft formingposition after which the tube frame is returned to the chain.
- one of these tube frames is indicated at i 4 in the position which it occupies just prior to movement downwardly to tuft forming position.
- the loom is provided with front and back tuft cutting knives l5 and I6, respectively, which operate at the proper time in the loom cycle to cut the row of tufts from the tube frame which has been moved to tuft forming position. Harness frames ll manipulate the warp threads in such manner as to form top and bottom sheds W and W2.
- the loom is provided with a shaft 20 which rotates once for each three picks of the loom..
- This shaft actuates the usual means for operating the tube frame transferrer arms 13, the knives I5 and I6, the harness frames I1, and the lay 21 which moves backwardly and forwardly once for each pick of the loom.
- the reed 22 of the lay extends through the Warp shed and is the means by which the weft thread F is beaten forwardly into the fabric.
- the left side of the loom is provided with a selvage shuttle 25 which is reciprocated along an arcuate shuttle race 26 by means of an actuator arm 21 on the upper end of a shaft 28 journaled for rotation in the loom about a vertical axis.
- the shuttle 25 has a reciprocation for each pick of the loom and passes through a loop in the filling thread F after the latter has been moved into the shed by the, improved needle forming part of our invention and set forth more particularly hereinafter.
- a flexible needle N which is made of sheet metal and is permanently curved throughout its length so that it is of arcuate transverse cross section and concave relatively to an axis longitudinal of the needle, as set forth particularly in Figs. 4 and 5.
- the needle N has a generally cylindrical weft eye member E formed with a recess R on the under side thereof for a selvage shuttle such as is customarily used on Axminster looms.
- the sheet or strip F forming the greater part of the length of the needle is flexible and in Fig. 4 is seen to be concave upwardly. As shown in Figs.
- the strip F is curved or wrapped around the bottom and sides of part of the eye E, the edges of the strip F converging toward each'other for the purpose as shown in Fig. '7.
- the flexible strip F engages a guide roll formed to fit the upper surface of the needle and rotatable in a stand -31 fixed to a stationary support'48 fixed with respect to the loom.
- a second roll 32 underthe needle is also rotatable on the stand 3
- has vertical guide walls 33 between which the needle N moves. The flexible needle is therefore guided by the rolls 3e and 32 and also by the walls 33.
- the needle is formed with a series of slots or openings 3 ⁇ ; in strip F which are aligned longitudinally and centrally of the needle and are equally spaced along the length of the needle to receive the sprocket teeth3lj of a sprocket wheel 31 mounted in a housing designated generally .at H.
- the sprocket wheel has a wide Web 38 having Emmerich peripheral surfaces 39 located on opposite sides of the teeth 36.
- the wheel 3" also has hubs '40 which are pinned or otherwise secured to a shaft M which rotate in bearing hubs 42 of right and'left side plates 43 and M, respectively, as'viewe'd in Fig. 3.
- the side plates are secured to a guide block if: as at ABandthe block'is secured as at 4'! to support 48.
- the block has provision for guiding the needle N'including a slot designated generally at 5% and having a horizontal part 5
- the bottom'of the slot has a surface 55 which is engaged by the under side of the needle and the arcuate part55 of'surfa'ce 55 is spaced from the surfaces 39 of the sprocket by a distance slightly greater than the thickness of the needle N.
- Anarrower slot 5"! is cut in block below the level of surface 55 to provide clearance for the teeth36 of thesprocket wheel, and the side walls 58 ofjthe'slot serve as guides for the needle to prevent substantial lateral movement thereof with respecttothe block.
- the slots 35 in the mee'dla may be slightly wider than the sprocket teeth 36 "and'thelatter serve merely to move the needle along the block without necessarily performing a guiding relation with respect to it.
- the upper parts of theplates43 and 44 are braced by a bridging plate 68 secured to the side plates as at El and to the vertical part 62 of block as at 63.
- This plate may be recessed as at 65 to permit upward movement of the needle N.
- a hollow guide 10 secured to the plate 60 extends upwardly therefrom and is then bent to the left as at H, Fig. 2, and then horizontally as at '52. Clips 'I3h'old the horizontal part 12 of the guide to a supporting frame M fixed with respect to the loom.
- the mechanism for oscillatin the sprocket 3'! is shown more particularly in Figs. 1, 2 and 3.
- Secured to the shaft 20 is a large bevelgear meshing with a pinion 8
- the forward end of shaft 82 carries a crank arm 84 the pin 85 of which is pivoted iii to the lower end of a connector 86.
- the latter extends upwardly and is pivotally connected as at 8'! to the bottom end of a rack member -88 slidable in topand bottom bearings 89 and 90 supported by the housing H.
- the rack meshes with a gea1' 91 secured to the shaft 4
- the side plates 43 and it cooperate with hubs 40 of the sprocket wheel to hold the latter in correct position for registry with the needle N.
- Th housing H is constructed with guide walls for the needle which require the latter to bend uniformly along that part thereof in driving relation with respect to the sprocket. These guides prevent buckling of the needle and prevent a greater amount of bending at the slots than between the latter. lt-will also be seen that we have provided a guide for-the upper part of the needle which directs the latter inwardly toward the center of the loom.
- the guide walls 58 and 33 serve to direct the needle eye toward the selva'ge shuttle.
- the needle 'N is flexible longitudinally so that it can bend around the sprocket wheel, and is also flexible transve'r's'ely so that it can'be flattened as it were when passing between the sprocket and guide block. Normally, however, the needle is curved in transverse'cross section and tends to lie straight.
- the operating mechanism for the needle is not claimed hereinbut is the subject matter of the parent applicati on of which this is a division.
- an elongated resilient sheet metal strip having substantially parallel edges and being curved in transverse cross section to be concave upwardly so that when in a horizontal Warp shed said edges are at a level above the part of the strip intermediate said edges,'said strip having a series of spaced apertures between said edges for cooperation with said toothed actuator, and a weft eye member secured to one end of said strip and having a recess on the under side thereof for a selvage shuttle said edges converging toward each'other ad- 75 jacent to said weft eye member and the strip be ing wrapped around the bottom and sides of part of said ey member.
- an elongated member made of resilient thin sheet material flexible when bent both longitudinally and transversely thereof and when in a horizontal Warp shed having the upper surface thereof concave longitudinally of the needle and having the bottom surface thereof convex longitudinally of 10 the needle, the member having longitudinally arranged apertures extending therethrough to cooperate with the toothed actuator, and a weft eye on one end of the needle around part of the bottom and sides of which said sheet material is curved, said needle due to flexibility thereof when bent longitudinally being capable of wrapping around said toothed actuator, and simultaneously assuming a straight form transversely thereof due h to the transverse flexibility thereof to lie against the periphery of said toothed actuator.
Description
April 10, 1951 N. FLETCHER ET AL WEFT NEEDLE MECHANISM FOR AXMINSTER LOOMS 3 Sheefs-Sheet 1 Original Filed March 1, 1946 FIG. 1
X ROBB' ATTORNEY April 10, 1951 N. FLETCHER ET AL 2,548,663
WEFT NEEDLE MECHANISM FOR AXMINSTER LOOMS Original Filed March 1, 1946 I 5 Sheets-Sheet 2 INVENTORS NORMAN FLETCHER WALTER Y. ROBE CA/a/ T ATTORNEY @pril 10, 1951 N. FLETCHER ETAL WEFT NEEDLE MECHANISM FOR AXMINSTER LOOMS 3 Sheets-Sheet 3 Original Filed March 1, 1946 FIE-1 IN VE NTORS NORMA/V FLETCHER WALTER X ROBE OAVMTM.
ATTORNEY Patented Apr. 10, 1951 UNITED STATES PATENT OFFICE WEFT NEEDLE MECHANISM FOR AXMINSTER LOOMS Original application March 1, 1946, Serial No. 651,178. Divided and this application July 2, 1947, Serial No. 758,642
2 Claims.
This is a division of my copending application Serial No. 651,178, filed March 1, 1946.
This invention relates to improvements in weft needles for looms more particularly. of the AX- minster type and it is the general object of our invention to provide a flexible needle formed of sheet metal curved transversely to provide rigidity.
In Axminster looms the weft is drawn from a stationary package and is introduced into the warp shed by an elongated needle. In the past this needle has been rigid and has required a long needle rail extending to one side of the loom. The needle rail adds considerably to the floor space occupied by the loom and in wide looms this additional space required for the rail is objectionably large. It is an important object of our present invention to provide a flexible needle which can be bent or curved on itself so that the part thereof out of the shed can move along a path transverse of that part of the needle which is in the shed, which usually extends to one side of the loom.
It is another object of our invention to make the needle of concave sheet metal provided with spaced slots or openings to receive the teeth of a driving sprocket wheel by which the needle is moved into and out of the shed.
With these and other objects in view which will appear as the description proceeds, our invention resides in the combination and arrangement of parts hereinafter described and set forth.
In the accompanying drawings, wherein a convenient embodiment of our invention is set forth,
Fig. 1 is a side elevation of a portion of an Axminster loom having our invention applied thereto,
Fig. 2 is a front elevation looking in the direction of arrow 2, Fig. 1,
Fig. 3 is an enlarged vertical section on line 33 of Fig. 2 showing the needle driving mechanism,
Figs. 4, and 6 are enlarged vertical sections on lines 44, 5-5 and 6-'B, respectively, of Fig. 2.
Fig. '7 is an enlarged plan view of the eye end of the needle looking in the direction of arrow 1, Fig. 2,
Fig. 8 is an enlarged plan looking in the direction of arrow 8, Fig. 2, showing the selvage shuttle, the needle and the thread guide at the right side of the loom,
Fig. 9 is a vertical section on line 99, Fig. 3,
Fig. 10 is a vertical section through the warp shed showing the needle between the top and bottom sheds, and
Fig. 11 is a horizontal section on line l|--l I, Fig. 3.
Referring to Figs. 1 and 2, the loom frame In supports a pullover shaft H around which extends a tube frame transporting chain 42. The tube frame transfer arms, one of which is shown at E3 in Fig. 1, disconnect the tube frames one at a time from the chains 12 and move them down in the usual manner to tuft formingposition after which the tube frame is returned to the chain. In Fig. 1 one of these tube frames is indicated at i 4 in the position which it occupies just prior to movement downwardly to tuft forming position.
The loom is provided with front and back tuft cutting knives l5 and I6, respectively, which operate at the proper time in the loom cycle to cut the row of tufts from the tube frame which has been moved to tuft forming position. Harness frames ll manipulate the warp threads in such manner as to form top and bottom sheds W and W2.
The loom is provided with a shaft 20 which rotates once for each three picks of the loom..
This shaft actuates the usual means for operating the tube frame transferrer arms 13, the knives I5 and I6, the harness frames I1, and the lay 21 which moves backwardly and forwardly once for each pick of the loom. The reed 22 of the lay extends through the Warp shed and is the means by which the weft thread F is beaten forwardly into the fabric.
As shown in Figs. 2 and 8 the left side of the loom is provided with a selvage shuttle 25 which is reciprocated along an arcuate shuttle race 26 by means of an actuator arm 21 on the upper end of a shaft 28 journaled for rotation in the loom about a vertical axis. The shuttle 25 has a reciprocation for each pick of the loom and passes through a loop in the filling thread F after the latter has been moved into the shed by the, improved needle forming part of our invention and set forth more particularly hereinafter.
The matter thus far described operates in the usual manner, the laybeating forwardly three times for each complete tuft forming cycle of the loom.
In carrying our invention into effect we provide a flexible needle N which is made of sheet metal and is permanently curved throughout its length so that it is of arcuate transverse cross section and concave relatively to an axis longitudinal of the needle, as set forth particularly in Figs. 4 and 5. The needle N has a generally cylindrical weft eye member E formed with a recess R on the under side thereof for a selvage shuttle such as is customarily used on Axminster looms. The sheet or strip F forming the greater part of the length of the needle is flexible and in Fig. 4 is seen to be concave upwardly. As shown in Figs. 2, 6 and 7 the strip F is curved or wrapped around the bottom and sides of part of the eye E, the edges of the strip F converging toward each'other for the purpose as shown in Fig. '7. The flexible strip F engages a guide roll formed to fit the upper surface of the needle and rotatable in a stand -31 fixed to a stationary support'48 fixed with respect to the loom. A second roll 32 underthe needle is also rotatable on the stand 3| and together with the upper roll 38 limits vertical motion of that part of the needle near the loom frame and shown at the right of Fig. 8. The stand 3| has vertical guide walls 33 between which the needle N moves. The flexible needle is therefore guided by the rolls 3e and 32 and also by the walls 33.
The needle is formed with a series of slots or openings 3}; in strip F which are aligned longitudinally and centrally of the needle and are equally spaced along the length of the needle to receive the sprocket teeth3lj of a sprocket wheel 31 mounted in a housing designated generally .at H. The sprocket wheel has a wide Web 38 having Emmerich peripheral surfaces 39 located on opposite sides of the teeth 36. The wheel 3": also has hubs '40 which are pinned or otherwise secured to a shaft M which rotate in bearing hubs 42 of right and'left side plates 43 and M, respectively, as'viewe'd in Fig. 3.
The side plates are secured to a guide block if: as at ABandthe block'is secured as at 4'! to support 48. The block has provision for guiding the needle N'including a slot designated generally at 5% and having a horizontal part 5|, an arcuate part 52 concentric with shaft 4i, and a vertical part 53. These three parts 'of the slot are continuous and form a guide for the needle as the s;
latter moves along the guide block 45.
The bottom'of the slot has a surface 55 which is engaged by the under side of the needle and the arcuate part55 of'surfa'ce 55 is spaced from the surfaces 39 of the sprocket by a distance slightly greater than the thickness of the needle N. v
Anarrower slot 5"! is cut in block below the level of surface 55 to provide clearance for the teeth36 of thesprocket wheel, and the side walls 58 ofjthe'slot serve as guides for the needle to prevent substantial lateral movement thereof with respecttothe block. The slots 35 in the mee'dlamay be slightly wider than the sprocket teeth 36 "and'thelatter serve merely to move the needle along the block without necessarily performing a guiding relation with respect to it.
The upper parts of theplates43 and 44 are braced by a bridging plate 68 secured to the side plates as at El and to the vertical part 62 of block as at 63. This plate may be recessed as at 65 to permit upward movement of the needle N. A hollow guide 10 secured to the plate 60 extends upwardly therefrom and is then bent to the left as at H, Fig. 2, and then horizontally as at '52. Clips 'I3h'old the horizontal part 12 of the guide to a supporting frame M fixed with respect to the loom.
The mechanism for oscillatin the sprocket 3'! is shown more particularly in Figs. 1, 2 and 3. Secured to the shaft 20 is a large bevelgear meshing with a pinion 8| of one-third the size secured to a-shaft 82 rotatable in a stationary bearing 83. The forward end of shaft 82 carries a crank arm 84 the pin 85 of which is pivoted iii to the lower end of a connector 86. The latter extends upwardly and is pivotally connected as at 8'! to the bottom end of a rack member -88 slidable in topand bottom bearings 89 and 90 supported by the housing H. The rack meshes with a gea1' 91 secured to the shaft 4|. The side plates 43 and it cooperate with hubs 40 of the sprocket wheel to hold the latter in correct position for registry with the needle N.
During loom operation a rotation of the shaft 23 will cause three rotations of the crank arm 84 and therefore three complete oscillations of the sprocket wheel 31. The needle will be inserted and removed from the shed for each oscillation of the sprocket and a complete rotation of shaft 2! will'result in laying three shots of filling customary'in the complete cycle of the three-shot Axminster loom.
It will be apparent that the needle i not dependent for its weft laying motions upon the particular kind of drive set forth herein, and so far ascertain features of our invention are concerned it is suflicient'if the sprocket 31 is given rotations first in one direction and then in the other by any suitable mechanism other than that shown herein.
From the foregoing it will be seen that we have provided a simple form of flexible needle for an Axminster loom constructed of flat resilient sheet metal dished or curved so as to be concave with respect to an axis extending along the length of the needle. Th housing H is constructed with guide walls for the needle which require the latter to bend uniformly along that part thereof in driving relation with respect to the sprocket. These guides prevent buckling of the needle and prevent a greater amount of bending at the slots than between the latter. lt-will also be seen that we have provided a guide for-the upper part of the needle which directs the latter inwardly toward the center of the loom. By this construction we are able to avoid the long needle rails heretofore used in wide Axminster looms. Furthermore, the guide walls 58 and 33 serve to direct the needle eye toward the selva'ge shuttle. The needle 'N is flexible longitudinally so that it can bend around the sprocket wheel, and is also flexible transve'r's'ely so that it can'be flattened as it were when passing between the sprocket and guide block. Normally, however, the needle is curved in transverse'cross section and tends to lie straight. The operating mechanism for the needle is not claimed hereinbut is the subject matter of the parent applicati on of which this is a division.
Having thus described our invention, it will be seen that changes and modifications may be made therein by those skilled in the'art without departing from the spirit and scope of the invention and we do not wish-to be limited to the details herein disclosed, but what we claim is:
1. In a weft needle to cooperate with a toothed actuator of an Axminster loom, an elongated resilient sheet metal strip having substantially parallel edges and being curved in transverse cross section to be concave upwardly so that when in a horizontal Warp shed said edges are at a level above the part of the strip intermediate said edges,'said strip having a series of spaced apertures between said edges for cooperation with said toothed actuator, and a weft eye member secured to one end of said strip and having a recess on the under side thereof for a selvage shuttle said edges converging toward each'other ad- 75 jacent to said weft eye member and the strip be ing wrapped around the bottom and sides of part of said ey member.
2. In a weft needle to cooperate with a rotary toothed actuator of an Axminster loom, an elongated member made of resilient thin sheet material flexible when bent both longitudinally and transversely thereof and when in a horizontal Warp shed having the upper surface thereof concave longitudinally of the needle and having the bottom surface thereof convex longitudinally of 10 the needle, the member having longitudinally arranged apertures extending therethrough to cooperate with the toothed actuator, and a weft eye on one end of the needle around part of the bottom and sides of which said sheet material is curved, said needle due to flexibility thereof when bent longitudinally being capable of wrapping around said toothed actuator, and simultaneously assuming a straight form transversely thereof due h to the transverse flexibility thereof to lie against the periphery of said toothed actuator.
NORMAN FLETCHER. WALTER Y. ROBB.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,856,119 Tomkinson May 3, 1932 2,109,256 Potter Feb. 22, 1938' 15 2,151,085 Dewas Mar. 21, 1939 FOREIGN PATENTS Number Country Date 445,254 Great Britain Apr. 6, 1936
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US758642A US2548663A (en) | 1946-03-01 | 1947-07-02 | Weft needle mechanism for axminster looms |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US651178A US2548662A (en) | 1946-03-01 | 1946-03-01 | Weft needle mechanism for axminster looms |
US758642A US2548663A (en) | 1946-03-01 | 1947-07-02 | Weft needle mechanism for axminster looms |
Publications (1)
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US2548663A true US2548663A (en) | 1951-04-10 |
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US758642A Expired - Lifetime US2548663A (en) | 1946-03-01 | 1947-07-02 | Weft needle mechanism for axminster looms |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2688345A (en) * | 1949-11-21 | 1954-09-07 | Prototypa Narodni Podnik | Continuous path gripper shuttle loom |
US2888956A (en) * | 1956-04-09 | 1959-06-02 | Draper Corp | Filling carrier drive for shuttleless looms |
US3159184A (en) * | 1962-11-13 | 1964-12-01 | Draper Corp | Tape motion for shuttleless looms |
US3669155A (en) * | 1969-04-30 | 1972-06-13 | Raymond Dewas | Weaving machines with continuous weft feed |
US3762449A (en) * | 1970-05-30 | 1973-10-02 | Jaeger E Kg | Loom |
US3957089A (en) * | 1973-09-24 | 1976-05-18 | Giovanna Martinelli | Loom of the shuttleless type |
US3998248A (en) * | 1973-12-04 | 1976-12-21 | Ruti Machinery Works Ltd. | Weft band with carrier for looper looms |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1856119A (en) * | 1929-12-18 | 1932-05-03 | Tomkinson Gerald | Weft needle or carrier for shuttleless looms |
GB445254A (en) * | 1935-01-04 | 1936-04-06 | Grossenhainer Webstuhl & Masch | Improvements in shuttle-less looms |
US2109256A (en) * | 1933-11-10 | 1938-02-22 | Ainsworth Mfg Corp | Windshield operating device |
US2151085A (en) * | 1936-11-21 | 1939-03-21 | Dewas Raymond | Needle weaving loom |
-
1947
- 1947-07-02 US US758642A patent/US2548663A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1856119A (en) * | 1929-12-18 | 1932-05-03 | Tomkinson Gerald | Weft needle or carrier for shuttleless looms |
US2109256A (en) * | 1933-11-10 | 1938-02-22 | Ainsworth Mfg Corp | Windshield operating device |
GB445254A (en) * | 1935-01-04 | 1936-04-06 | Grossenhainer Webstuhl & Masch | Improvements in shuttle-less looms |
US2151085A (en) * | 1936-11-21 | 1939-03-21 | Dewas Raymond | Needle weaving loom |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2688345A (en) * | 1949-11-21 | 1954-09-07 | Prototypa Narodni Podnik | Continuous path gripper shuttle loom |
US2888956A (en) * | 1956-04-09 | 1959-06-02 | Draper Corp | Filling carrier drive for shuttleless looms |
US3159184A (en) * | 1962-11-13 | 1964-12-01 | Draper Corp | Tape motion for shuttleless looms |
DE1535357B1 (en) * | 1962-11-13 | 1970-10-01 | North American Rockwell | Weaving machine with removal of the weft thread from stationary bobbins by a thread gripper |
US3669155A (en) * | 1969-04-30 | 1972-06-13 | Raymond Dewas | Weaving machines with continuous weft feed |
US3762449A (en) * | 1970-05-30 | 1973-10-02 | Jaeger E Kg | Loom |
US3957089A (en) * | 1973-09-24 | 1976-05-18 | Giovanna Martinelli | Loom of the shuttleless type |
US3998248A (en) * | 1973-12-04 | 1976-12-21 | Ruti Machinery Works Ltd. | Weft band with carrier for looper looms |
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