US3645300A - Takeup mechanism for weaving loom - Google Patents

Takeup mechanism for weaving loom Download PDF

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Publication number
US3645300A
US3645300A US21034A US3645300DA US3645300A US 3645300 A US3645300 A US 3645300A US 21034 A US21034 A US 21034A US 3645300D A US3645300D A US 3645300DA US 3645300 A US3645300 A US 3645300A
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cloth
sand
auxiliary
around
loom
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US21034A
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Pieter Theodorus Geven
Peter Hubert
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/20—Take-up motions; Cloth beams

Definitions

  • a loom of this type is disclosed in copending application U.S. Ser. No. 758,861, filed Sept. 10, 1968 now US. Pat. No. 3,532,137.
  • the use of an auxiliary beam cooperating with the sand beam permits the cloth to be out between the sand beam and the cloth beam and thereafter the cloth beam to be removed (e.g., when it has been filled completely with the rolled-up cloth) without the need of stopping the loom for this purpose.
  • locking means are used for holding the auxiliary beam in its operative position relative to the sand beam.
  • the present invention provides a weaving loom, comprising a sand beam around which the cloth travels, and at least one auxiliary beam which is arranged adjacent to the sand beam so as to cause the cloth to travel between the sand beam and the auxiliary beam, the improvement consisting in the auxiliary beam being movably supported in such a way that the force exerted on said beam due to the tension in the cloth tends to press the auxiliary beam against the sand beam.
  • each auxiliary beam cooperating with the sand beam is rotatably mounted between two support arms swingably mounted about an axis that is so situated with regard to the sand beam that the auxiliary beam may be swung away from the sand beam so as to provide access to the surfaces of both the sand beam and the auxiliary beam.
  • one auxiliary beam is located at the cloth entrance side of the sand beam and a second auxiliary beam is positioned at the cloth delivery side of the sand beam.
  • auxiliary beam at the cloth delivery side is driven with the intermediary of a slip coupling.
  • the cloth may be severed between said auxiliary beam at the delivery side and the cloth beam and the cloth beam may be removed while the cloth proceeds moving taut against the sand beam.
  • the drawing is a schematic view of part of a loom comprising the sand beam and the associated auxiliary beams.
  • the cloth 1 moves from the weaving shed (not shown) over the breast beam 2 and the sand beam 3 to the cloth beam 4 onto which the cloth is wound.
  • the sand beam 3 is driven by a drive mechanism 5, partly and schematically shown, at a rate which is a function of the weaving speed of the loom.
  • the sand beam 3 has a rough surface to provide reliable friction between the cloth I and the surface of the sand beam 3.
  • the sand beam cooperates with two auxiliary beams 6 and 7.
  • the cloth arriving from the breast beam 2 passes around the auxiliary beam 6 and along the back of the sand beam 3 to the auxiliary beam 7. Thereafter the cloth moves around said auxiliary beam 7 to the cloth beam 4. Thereby the cloth forms a loop la between the auxiliary beams 6 and 7 in which loop the sand beam 3 is located.
  • the loop la of the cloth lies taut around the sand beam 3 and around the auxiliary beams 6 and 7.
  • the cloth is taut around the auxiliary beam 6 because of the tension force on the cloth in the warp direction which is generated by the sand beam 3.
  • the tension in the cloth in the portion between the auxiliary beam 6 and the weaving shed (not shown) is a measure for the quality of the fabric, while the linear speed of the cloth derived from the rotational speed of the sand beam 3 is a measure for the number of wefts per given warp length.
  • the cloth is taut around the auxiliary beam 7 because of the cloth being wound onto the cloth beam 4 and because said cloth beam is driven preferably with an excess in speed i.e., the cloth beam is driven so that the cloth between the auxiliary beam 7 and the cloth beam periphery is always taut.
  • the cloth beam may be driven with the intermediary of a belt 10 guided around pulleys 8 and 9.
  • the belt 10 is allowed to slip in the pulleys 8 and 9 so as to keep the tension in the cloth between the auxiliary beam 7 and the cloth beam periphery at the correct value.
  • the tension in this portion of the cloth is not critical for the fabric quality provided the cloth in the loop la lies taut around the sand beam 3.
  • a separate slip coupling 11 may be applied as a connect ing means between the shaft 12 of the sand beam and the belt pulley 8. The amount of slippage in the slip coupling 11 may be adjusted at will.
  • the auxiliary beam 6 is supported by pivoting arms 13a and 13b, which tend to press the beam 6 against the periphery of the sand beam under the action of the tension in the cloth.
  • the arms 13a, 13b are pivotally mounted on a support shaft 14 located near the breast beam 2.
  • the auxiliary beam 7 is likewise supported by pivoting arms 15a and 15b. In the embodiment shown the pivoting arms 15a, 15b likewise pivot around the support shaft 14 but they may also pivot around a separate shaft.
  • the pivot axis of the pivoting arms 13a, 13b and 15a, 1512 has to be such that a force generated by the tension of the cloth on the auxiliary beams 6 and 7 has a component tending to press the auxiliary beams 6 and 7 against the sand beam 3.
  • auxiliary beams 6 and 7 When a new cloth or mat of warp threads has to be applied around the sand beam 3 the auxiliary beams 6 and 7 may be swung upwardly to provide access to the surfaces of the auxiliary beams 6 and 7 and the surface of the sand beam 3.
  • the auxiliary beams may be locked in their upward position as by means of pawls 16 extending behind cams 17 of the pivoting arms 13a and 150. After disengaging the pawls 16 the respective auxiliary beams may again be brought in their operative positions.
  • auxiliary beams 6 and 7 results in such a good application of the cloth against the periphery of the sand beam 3 that the cloth may be severed between the auxiliary beam 7 and the cloth beam 4, for instance when a full beam has to be removed from the loom, without the necessity of stopping the loom.
  • the cloth hanging down from the auxiliary beam 7 then hangs completely free until a sufficient length is obtained enabling it to be wound on a new empty beam whereafter the new cloth beam is against suspended in its journals in the loom.
  • a weaving loom comprising a driven sand beam having a friction surface for driving engagement with a cloth, woven by the loom, and a driven cloth beam for winding up the cloth leaving the sand beam, wherein the improvement comprises a cloth extending around one auxiliary beam, then around the sand beam, and then around the other auxiliary beam to the cloth beam has a component which presses each auxiliary beam against the sand beam.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

A weaving loom, in which a sand beam cooperates with at least one auxiliary beam for guiding the cloth, said auxiliary beam being movably supported in such a way, that the force exerted on said beam due to the tension in the cloth tends to press the auxiliary beam against the sand beam.

Description

United States Patent Geven et al.
[ 1 Feh.29,1972
[54] TAKEUP MECHANISM FOR WEAVING DOOM [72] inventors: Pieter Theodorus Geven, Molenstraat 83, van Mullekom; Peter Hubert, Voortseweg l l, Deurne, both of Netherlands [22] Filed: Mar. 19, 1970 [21] Appl.No.: 21,034
[30] Foreign Application Priority Data Apr. 2, 1969 Netherlands ..6905 194 [52] US. Cl ..139/308 [5 1] Int. Cl. [58] Field of Search 1 39/307, 308, 304; 242/66 [56] References Cited UNITED STATES PATENTS 2,776,677 1/1957 Paqnette ..l39/304 2,293,666 8/1942 Santon ..l39/307 2,226,090 l2/l940 Burdett.....
2,276,790 3/1942 Palmer .11.. 1 39/307 FOREIGN PATENTS OR APPLICATIONS 474,244 9/1952 Italy ..139/3o4 232,447 3/1964 Austria 649,844 l2/l928 France ..l39/308 Primary Examiner.l ames Kee Chi Attorney-Marshall & Yeasting [5 7] ABSTRACT A weaving loom, in which a sand beam cooperates with at least one auxiliary beam for guiding the cloth, said auxiliary beam being movably supported in such a way, that the force exerted on said beam due to the tension in the cloth tends to press the auxiliary beam against the sand beam 1 Claims, 1 Drawing Figure TAKEUP MECHANISM FOR WEAVING LOOM BACKGROUND OF THE INVENTION DESCRIPTION OF THE PRIOR ART This invention relates to a weaving loom of the type in which a sand beam cooperates with an auxiliary beam for guiding the cloth in engagement with a large portion of the circumference of the sand beam. A loom of this type is disclosed in copending application U.S. Ser. No. 758,861, filed Sept. 10, 1968 now US. Pat. No. 3,532,137. The use of an auxiliary beam cooperating with the sand beam permits the cloth to be out between the sand beam and the cloth beam and thereafter the cloth beam to be removed (e.g., when it has been filled completely with the rolled-up cloth) without the need of stopping the loom for this purpose. In the prior construction locking means are used for holding the auxiliary beam in its operative position relative to the sand beam.
OBJECT OF THE INVENTION It is a main object of the present invention tov improve a weaving loom of the above type in such a way that in operation the auxiliary beam will be drawn in engagement with the sand beam in a positive manner, without making use of particular pressing means.
Accordingly the present invention provides a weaving loom, comprising a sand beam around which the cloth travels, and at least one auxiliary beam which is arranged adjacent to the sand beam so as to cause the cloth to travel between the sand beam and the auxiliary beam, the improvement consisting in the auxiliary beam being movably supported in such a way that the force exerted on said beam due to the tension in the cloth tends to press the auxiliary beam against the sand beam.
In a preferred embodiment each auxiliary beam cooperating with the sand beam is rotatably mounted between two support arms swingably mounted about an axis that is so situated with regard to the sand beam that the auxiliary beam may be swung away from the sand beam so as to provide access to the surfaces of both the sand beam and the auxiliary beam.
In accordance with a further preferred feature one auxiliary beam is located at the cloth entrance side of the sand beam and a second auxiliary beam is positioned at the cloth delivery side of the sand beam.
Advantageously at least the auxiliary beam at the cloth delivery side is driven with the intermediary of a slip coupling. As a result thereof the cloth may be severed between said auxiliary beam at the delivery side and the cloth beam and the cloth beam may be removed while the cloth proceeds moving taut against the sand beam.
BRIEF DESCRIPTION OF THE DRAWING The drawing is a schematic view of part of a loom comprising the sand beam and the associated auxiliary beams.
DESCRIPTION OF THE PREFERRED EMBODIMENT In the loom the cloth 1 moves from the weaving shed (not shown) over the breast beam 2 and the sand beam 3 to the cloth beam 4 onto which the cloth is wound. The sand beam 3 is driven by a drive mechanism 5, partly and schematically shown, at a rate which is a function of the weaving speed of the loom. The sand beam 3 has a rough surface to provide reliable friction between the cloth I and the surface of the sand beam 3.
In the embodiment shown the sand beam cooperates with two auxiliary beams 6 and 7. The cloth arriving from the breast beam 2 passes around the auxiliary beam 6 and along the back of the sand beam 3 to the auxiliary beam 7. Thereafter the cloth moves around said auxiliary beam 7 to the cloth beam 4. Thereby the cloth forms a loop la between the auxiliary beams 6 and 7 in which loop the sand beam 3 is located. The loop la of the cloth lies taut around the sand beam 3 and around the auxiliary beams 6 and 7. The cloth is taut around the auxiliary beam 6 because of the tension force on the cloth in the warp direction which is generated by the sand beam 3. The tension in the cloth in the portion between the auxiliary beam 6 and the weaving shed (not shown) is a measure for the quality of the fabric, while the linear speed of the cloth derived from the rotational speed of the sand beam 3 is a measure for the number of wefts per given warp length. The cloth is taut around the auxiliary beam 7 because of the cloth being wound onto the cloth beam 4 and because said cloth beam is driven preferably with an excess in speed i.e., the cloth beam is driven so that the cloth between the auxiliary beam 7 and the cloth beam periphery is always taut. The cloth beam may be driven with the intermediary of a belt 10 guided around pulleys 8 and 9. Preferably the belt 10 is allowed to slip in the pulleys 8 and 9 so as to keep the tension in the cloth between the auxiliary beam 7 and the cloth beam periphery at the correct value. The tension in this portion of the cloth is not critical for the fabric quality provided the cloth in the loop la lies taut around the sand beam 3. Instead of a slipping belt 10 also a separate slip coupling 11 may be applied as a connect ing means between the shaft 12 of the sand beam and the belt pulley 8. The amount of slippage in the slip coupling 11 may be adjusted at will.
In order to keep the auxiliary beam 6 well engaged with the periphery of the sand beam 3, the auxiliary beam 6 is supported by pivoting arms 13a and 13b, which tend to press the beam 6 against the periphery of the sand beam under the action of the tension in the cloth. The arms 13a, 13b are pivotally mounted on a support shaft 14 located near the breast beam 2. The auxiliary beam 7 is likewise supported by pivoting arms 15a and 15b. In the embodiment shown the pivoting arms 15a, 15b likewise pivot around the support shaft 14 but they may also pivot around a separate shaft. With the location of the pivot axis shown in the drawing not only the tension in the cloth draws the auxiliary beams 6 and 7 against the sand beam 3 but also the weight of the auxiliary beams 6 and 7 and the weight of the pivoting arms 13a, 13b and 15a, 15b will assist in keeping the beams well engaged with the surface of the sand beam. Therefore the pivot axis of the pivoting arms 13a, 13b and 15a, 1512 has to be such that a force generated by the tension of the cloth on the auxiliary beams 6 and 7 has a component tending to press the auxiliary beams 6 and 7 against the sand beam 3.
When a new cloth or mat of warp threads has to be applied around the sand beam 3 the auxiliary beams 6 and 7 may be swung upwardly to provide access to the surfaces of the auxiliary beams 6 and 7 and the surface of the sand beam 3. The auxiliary beams may be locked in their upward position as by means of pawls 16 extending behind cams 17 of the pivoting arms 13a and 150. After disengaging the pawls 16 the respective auxiliary beams may again be brought in their operative positions.
The application of the auxiliary beams 6 and 7 results in such a good application of the cloth against the periphery of the sand beam 3 that the cloth may be severed between the auxiliary beam 7 and the cloth beam 4, for instance when a full beam has to be removed from the loom, without the necessity of stopping the loom. The cloth hanging down from the auxiliary beam 7 then hangs completely free until a sufficient length is obtained enabling it to be wound on a new empty beam whereafter the new cloth beam is against suspended in its journals in the loom. For some kind of cloth it may be preferable to drive the auxiliary beam 7 as well, for instance by means of a gear (not shown) on the auxiliary beam 7 engaging the gear 18 on the sand beam, if necessary with application of a slip coupling. It is also possible to apply a belt in the same manner as the belt 10 to drive the auxiliary beam 7 if desired.
We claim:
1. A weaving loom comprising a driven sand beam having a friction surface for driving engagement with a cloth, woven by the loom, and a driven cloth beam for winding up the cloth leaving the sand beam, wherein the improvement comprises a cloth extending around one auxiliary beam, then around the sand beam, and then around the other auxiliary beam to the cloth beam has a component which presses each auxiliary beam against the sand beam.

Claims (1)

1. A weaving loom comprising a driven sand beam having a friction surface for driving engagement with a cloth, woven by the loom, and a driven cloth beam for winding up the cloth leaving the sand beam, wherein the improvement comprises two auxiliary beams, each of which extends parallel to the sand beam and is rotatably carried by a support that is pivoted upon an axis extending above and parallel to the sand beam, each auxiliary beam being free to pivot by gravity with its support through an arc which intersects the sand beam, and the locations of the auxiliary beams being such that the tension in a cloth extending around one auxiliary beam, then around the sand beam, and then around the other auxiliary beam to the cloth beam has a component which presses each auxiliary beam against the sand beam.
US21034A 1969-04-02 1970-03-19 Takeup mechanism for weaving loom Expired - Lifetime US3645300A (en)

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Application Number Priority Date Filing Date Title
NL6905194A NL6905194A (en) 1969-04-02 1969-04-02

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US3645300A true US3645300A (en) 1972-02-29

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US (1) US3645300A (en)
AU (1) AU1330070A (en)
BE (1) BE747871A (en)
CH (1) CH509441A (en)
DE (1) DE2015369A1 (en)
FR (1) FR2042828A5 (en)
GB (1) GB1311148A (en)
NL (1) NL6905194A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003411A (en) * 1973-05-24 1977-01-18 Elitex, Zavody Textilniho Strojirenstvi Generalni Reditalstvi Device for withdrawing fabrics from looms
US4028912A (en) * 1974-12-27 1977-06-14 Sulzer Morat Gmbh Fabric take-up mechanism
FR2364990A1 (en) * 1976-09-21 1978-04-14 Saurer Ag Adolph LOOM
DE2854256A1 (en) * 1978-12-05 1980-06-12 Sulzer Ag Fume hood device for the fabric web on a textile, preferably weaving machine
US4273163A (en) * 1978-01-19 1981-06-16 Sulzer Brothers Limited Fabric take-off device
EP1489212A2 (en) * 2003-06-19 2004-12-22 Tsudakoma Kogyo Kabushiki Kaisha Press roller apparatus for weaving machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1001913A3 (en) * 1988-05-03 1990-04-10 Picanol Nv Device for discharging the fabric of looms.
IT1266136B1 (en) * 1993-02-18 1996-12-20 Inter Patent Limited DEVICE FOR THE ADVANCE OF THE FABRIC
DE102007051526B3 (en) * 2007-10-29 2009-04-02 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Device for removing the web on a loom and loom with such a device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR649844A (en) * 1927-07-22 1928-12-28 Dauphinoise De Const Mecanique Advanced loom regulator
US2226090A (en) * 1940-05-13 1940-12-24 Draper Corp Cloth roll drive
US2276790A (en) * 1941-02-21 1942-03-17 Crompton & Knowles Loom Works Cloth pressure mechanism for takeup rolls
US2293666A (en) * 1941-12-15 1942-08-18 Crompton & Knowles Loom Works Take-up mechanism for looms
US2776677A (en) * 1955-03-14 1957-01-08 Draper Corp Means for preventing creases in fabrics as taken up in looms
AT232447B (en) * 1962-04-27 1964-03-25 Sdruzeni Podniku Textilniho St Storage of the pressure roller of looms that interacts with the sand tree

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR649844A (en) * 1927-07-22 1928-12-28 Dauphinoise De Const Mecanique Advanced loom regulator
US2226090A (en) * 1940-05-13 1940-12-24 Draper Corp Cloth roll drive
US2276790A (en) * 1941-02-21 1942-03-17 Crompton & Knowles Loom Works Cloth pressure mechanism for takeup rolls
US2293666A (en) * 1941-12-15 1942-08-18 Crompton & Knowles Loom Works Take-up mechanism for looms
US2776677A (en) * 1955-03-14 1957-01-08 Draper Corp Means for preventing creases in fabrics as taken up in looms
AT232447B (en) * 1962-04-27 1964-03-25 Sdruzeni Podniku Textilniho St Storage of the pressure roller of looms that interacts with the sand tree

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003411A (en) * 1973-05-24 1977-01-18 Elitex, Zavody Textilniho Strojirenstvi Generalni Reditalstvi Device for withdrawing fabrics from looms
US4028912A (en) * 1974-12-27 1977-06-14 Sulzer Morat Gmbh Fabric take-up mechanism
FR2364990A1 (en) * 1976-09-21 1978-04-14 Saurer Ag Adolph LOOM
US4125131A (en) * 1976-09-21 1978-11-14 Adolph Saurer Fixed driving connection between a guide roller and delivery roller of a loom
US4273163A (en) * 1978-01-19 1981-06-16 Sulzer Brothers Limited Fabric take-off device
DE2854256A1 (en) * 1978-12-05 1980-06-12 Sulzer Ag Fume hood device for the fabric web on a textile, preferably weaving machine
US4276911A (en) * 1978-12-05 1981-07-07 Sulzer Brothers Limited Take-off apparatus for the fabric web of a textile machine, especially a loom
EP1489212A2 (en) * 2003-06-19 2004-12-22 Tsudakoma Kogyo Kabushiki Kaisha Press roller apparatus for weaving machine
EP1489212A3 (en) * 2003-06-19 2005-06-01 Tsudakoma Kogyo Kabushiki Kaisha Press roller apparatus for weaving machine

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Publication number Publication date
AU1330070A (en) 1971-10-07
NL6905194A (en) 1970-10-06
CH509441A (en) 1971-06-30
FR2042828A5 (en) 1971-02-12
GB1311148A (en) 1973-03-21
DE2015369A1 (en) 1970-10-15
BE747871A (en) 1970-08-31

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