US3695302A - Method and apparatus for producing a terry fabric on a loom - Google Patents

Method and apparatus for producing a terry fabric on a loom Download PDF

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Publication number
US3695302A
US3695302A US1602A US3695302DA US3695302A US 3695302 A US3695302 A US 3695302A US 1602 A US1602 A US 1602A US 3695302D A US3695302D A US 3695302DA US 3695302 A US3695302 A US 3695302A
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United States
Prior art keywords
beat
fabric
distance
terry
thread
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Expired - Lifetime
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US1602A
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English (en)
Inventor
Karl Jud
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Ruti Machinery Works Ltd
Maschinenfabrik Rueti AG
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Maschinenfabrik Rueti AG
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D27/00—Woven pile fabrics
    • D03D27/02—Woven pile fabrics wherein the pile is formed by warp or weft
    • D03D27/06—Warp pile fabrics
    • D03D27/08—Terry fabrics

Definitions

  • This invention relates to a method and apparatus for producing a terry fabric, and more particularly to a method of producing a terry towelling, in which weft threads are beaten up in a repeating sequence at various distances from the fabric beat-up and to the apparatus or arrangement for carrying out this method on a loom or weaving machine.
  • this invention contemplates a method for producing a terry fabric which Eischaracterized in that the first weft thread of the sequence is beaten up at a predetermined distance from the beat-up of the fabric; the second weft thread of the sequence is beaten up at a distance somewhat less than this predetermined distance from the fabric beat-up; the last weft thread of the sequence is beaten up at a distance from the fabric beat-up corresponding to beat-up in plain weaving; and the terry warp threads are looped round the second weft thread.
  • This invention is also concerned with an apparatus or an arrangement for use on a terry loom for beating up the weft threads, which comprises control means for varying the beat-up movement of the reed in order to obtain, in a repeating sequence, weft thread beat-up positions at various distances from the fabric beat-up.
  • This apparatus is further characterized in that the control means sets the beat-up positions of the reed, the first of which is at a predetermined distance from the fabric beat-up, the second of which is at a distance somewhat less than this predetermined distance from the fabric beat-up, and the third of which is at a distance from the fabric beat-up corresponding to beatup in the case of plain weaving, provision being made for the shed to be changed before and after the second beat-up for the terry threads.
  • FIG-l is a side view of the apparatus of this invention
  • aplate 11 disposed atright-an- A gles to the plane of the drawing, is carried by a support 'or drive member 12 at each of its two ends.
  • the supv ports 12 execute swinging movements of a constant angle or uniform sweep about the shaft 13.
  • the shuttle boxes of the loom are also carried on supports 12.
  • Two swinging arms or sley supports 14 are likewise swingable about the shaft 13. Where these are masked by the drive member 12, they are drawn in broken lines.
  • each of the sley supports or swinging arms 14 carry a sley l5 and a reed 16.
  • the sley 15 and the reed 16 extend at right-angles, i.e., perpendicular, to the plane of the drawing.
  • the sley and reed are supported at each end by a swinging arm 14.
  • each of these arms has a carrier 17 at its upper end.
  • Rotatably mounted on each of these carriers is a toggle link comprising arms 18 and 19.
  • the other end of each of the toggle links can swing about a shaft 33, each such shaft being carried by an extension 20.
  • Each of the extensions forms part of one of the drive members 12.
  • the arm 18, swingable about the axis designated by reference numeral 21, is biassed by a coiled spring 35. This bias urges the arm 18 of the toggle link 18, 19 in the clockwise direction.
  • the end position of this rotary movement is determined by the adjustable stop 36.
  • the arm 19 is rigidly connected to the arm 22.
  • At its free end arm 22 carries a rod 23, with which the hooks of the retaining members or means 24, 25 can engage in their lowered position.
  • the retaining members 24, 25 are of different lengths. It will be appreciated that the lengths of the retaining members may be adjustable. Together with the arms 26 and 27, respectively, these members constitute double-armed levers that can be swung about the shaft 34.
  • Two retaining members 24, 25 are associated with each of the toggle links 18, 19 at the ends of the extensions 20.
  • the mechanism for actuating theretaining members 24, 25 is illustrated diagrammatically in FIG. 1.
  • the eccentric disc 32 executes one revolution for each insertion of the weft thread in a shed of the loom. If it is required to move one of the retaining members 24, 25 into its lowered or retaining position, the corresponding hook 30 or 31 is programmed, appropriately in accordance with the loom operation, to be lowered so that the rod 28 or 29, respectively, remains on the curved guide surface of the eccentric 32. While the rod 28 or rod 29 bears against the small diameter of the disc 32, the hook of retaining member 24 or 25 is located in its lower position, i.e. in a position in which it retains the rod 23 and thus the arm 22. In the raised position the books 30, 31 prevent their associated rods 28 and 29, respectively, from moving to the right, so that the corresponding retaining members 24 and 25, respectively, remain in their raised positions.
  • the terry towelling is indicated by the reference numeral 40 and the warp threads by the reference numerals 41, 42 and 43 in FIGS. 2a through 2d.
  • the method of producing the fabric 40 in accordance with the invention is also schematically illustrated in detail in these figures.
  • the basic fabric is formed by means of the warp threads 41 and 42 and the nap by the towelling warp threads 43.
  • the fabric beat-up or fell providing the reference point for the repeating sequence of weft thread insertions is assumed to be constituted or formed by the last inserted weft thread 44 in FIG. 2a. This thread extends perpendicular to the plane or the drawing and like the other weft threads is shown on a larger scale to facilitate understanding of the drawings.
  • the next weft thread 46 is inserted and, as shown in FIG. 2b, is beaten up at a distance s from the fabric beat-up or fell formed by thread 44.
  • the next weft thread 47 is inserted-in the same shed of the warp threads 41 and 42, but with nap or terry threads 43 the shed position of which has been changed.
  • the weft thread 47 as shown in FIG. 2c, is beaten up at a distance t from the fabric beat-up point at thread 44, which distance is equal to or somewhat less than the distance s.
  • the weft thread 46 is thus moved somewhat towards the fabric beat-up at thread 44, and threads 46 and 47 are positioned close to each other.
  • weft thread 48 After a shed-change of the threads 41 and 42 and of the terry thread 43, the next weft thread 48 is inserted.
  • the following thread beat-up occurs up to a distance from the fabric beat-up of thread 44 such that the weft threads 46 to 48 are spaced in a way corresponding to a normal fabric or to plain weaving.
  • the sequence of weft insertions is then repeated, i.e., the next weft thread is again inserted and beaten up at a distance s from the new fabric beat-up at thread 48, and so on.
  • the fabric beat-up or fell formed by weft thread 44 may also be considered as the reference beat-up or fell for the described repeating sequence.
  • the hook 31 (shown in FIG. 1) is raised upon insertion of the weft thread 46, in accordance with a program which is determined by a system including a punched card associated with the shed-forming mechanism of the loom.
  • the eccentric 32 moves the rod 29 to the left, the rod is held by the hook 31 which latches into it.
  • the retaining member 25 thus remains in its upper position. Since the hook 30 is not however moved upwards by the programming system, the rod 28 can move to the right and can remain in contact with the eccentric 32.
  • the hook 30 is raised and the hook 31 of the control means is lowered by a mechanism (not shown) which is actuated, e.g., by signals, advantageously electrical signals from the heald mechanism or shed forming mechanism of the loom including the heretofore-described punch card.
  • the retaining member 25 thus moves into its active position, and the retaining member 24 is held in its nonoperative position.
  • the retaining member 25 is somewhat longer than the retaining member 24, so that when the weft thread 47 is beaten up, the rod 23 is seized a little later than in the case when the weft thread 46 is beaten up.
  • the swinging arm 14 is retracted to a somewhat less extent, and the beat-up action of the reed takes place closer to the edge adjacent to thread 44 of the fabric, and at a distance t therefrom.
  • both hooks 30 and 31 are raised in accordance with the predetermined program. As a result of this, both retaining members 24 and 25 remain in their raised non-active positions.
  • the toggle link 18, 19 therefore remains extended and the reed 16 executes a complete beat-up movement.
  • thread 46 was also moved a short distance towards the fabric beat-up at thread 44, upon beat-up of thread 48, both the thread 48 and the threads 46 and 47 are now pushed fully to the fabric beat-up at thread 44 (as can be seen from FIG. 2d).
  • An important feature of the present invention is that when the weft thread 47 is beaten up, the thread presses against the weft thread 46 and thus the thread 46 is likewise pushed a little towards the beat-up at thread 44 of the fabric.
  • the terry thread 43 is already firmly held between the weft threads 46 and 47 in the phase of operation illustrated in FIG. 2c. This retention is further increased during the full beat-up illustrated in FIG. 2d, since the towelling thread 43 is looped round the warp thread 47 and is pressed against it on both sides. As a result of this retaining action, a considerable improvement is obtained as compared with the known terry fabrics in the sense that the loops 43 are of appreciably more uniform size.
  • the apparatus or arrangement shown in FIG. 1 for beating up of the weft threads can also be used in the production of fabrics having different depths of nap.
  • a third retaining member in addition to the retaining members 24 and 25, is provided.
  • This third member is longer than the retaining members 24 and 25 and determines the position of the fabric beatup at thread 44 in the case of smaller depths of nap.
  • this third retaining member is moved into the non-active position.
  • only two retaining members 24 and 25 are provided in another apparatus serving the same purpose. In this case, as in terry weaving systems employed at the present time, a first partial displacement, as was described for the threads 46 and 47, is not used.
  • the threads 46 and 47 are beaten up with the member 24 in the active position.
  • the small depth of nap is obtained by beating up by means of the member 25 and the large depth of nap by cutting out the member 25.
  • terry threads are used in addition to the terry threads 43.- Their arrangement and movements are symmetrical with regard to the warp threads 43 and with reference to the plane of the fabric 40.
  • a method or producing a terry towelling on a loom wherein weft threads are beaten up in a repeating sequence, for each row of terry loops, at various distances from a reference fabric beat-up which comprises beating up the first weft thread of a sequence at a predetermined distance from the fabric beat-up, looping terry warp threads around a second weft thread of the sequence, beating up the second weft thread of the sequence at a distance somewhat less than said predetermined distance from the fabric beat-up, and beating up the last weft thread of the sequence at a distance from the fabric beat-up as in the case of plain weaving.
  • An apparatus for use on a terry loom for beating up the weft threads which comprises control means for varying the beat-up movement of the reed in order to achieve a repeating sequence of weft-thread beat-up positions, for each row of terry loops, at various distances from a reference fabric beat-up, said control means determining beat-up positions of the reed so that the first beat-up position is at a predetermined distance from the reference fabric beat-up, the second beat-up position is at a distance somewhat less than said predetermined distance from the reference fabric beatup and the third beat-up position is at a distance from the reference fabric beat-up that corresponds to a beatup in the case of plain weaving; provision being made for a shed-change for the terry threads before and after the second beat-up position.
  • the apparatus of claim 3 further comprising a pair of swinging arms, said reed being supported at each of its two ends by one of said swinging arms, a common shaft about which the swinging arms are swung, drive members capable of executing reciprocating swinging movements of a constant distance, said swinging arms being secured to the drive members by connecting means at a distance which can be varied by the control means actin on said 0 ect' m ans.
  • the apgaratus o c aim winch the drive members constitute supports for shuttle boxes carrying shuttles which insert the weft threads into the sheds formed during the weaving operation, said drive means also being swung about the said common shaft.
  • each swinging arm has a connecting means that comprises a toggle link, said toggle links each being capable of being collapsed to various extents by the control means, and
  • each of the toggle links being rotatably attached by one end to one of the swinging arms and by the other end to one of the drive members.
  • each of the toggle links forms a toggle lever continuously biased by a biasing means towards an end position
  • the control means comprises lever arms, each of which is firmly connected to an arm of each toggle link, respectively, and a plurality of controllable retaining members arranged to be moved at various positions, in accordance with a program, into the path of movement of the lever arms, respectively, in order to actuate the lever arms, thereby overcoming the bias of the toggle lever.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US1602A 1969-01-31 1970-01-09 Method and apparatus for producing a terry fabric on a loom Expired - Lifetime US3695302A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH152369A CH494296A (de) 1969-01-31 1969-01-31 Verfahren zur Herstellung eines Frottiergewebes und Anordnung an einer Frottiermaschine zur Durchführung des Verfahrens

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US3695302A true US3695302A (en) 1972-10-03

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US1602A Expired - Lifetime US3695302A (en) 1969-01-31 1970-01-09 Method and apparatus for producing a terry fabric on a loom

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US (1) US3695302A (enrdf_load_stackoverflow)
JP (1) JPS4944019B1 (enrdf_load_stackoverflow)
BE (1) BE745226A (enrdf_load_stackoverflow)
CH (1) CH494296A (enrdf_load_stackoverflow)
DE (1) DE2003809A1 (enrdf_load_stackoverflow)
FR (1) FR2030213A1 (enrdf_load_stackoverflow)
GB (1) GB1295714A (enrdf_load_stackoverflow)
MY (1) MY7600017A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058628A (en) * 1988-07-08 1991-10-22 Sulzer Brothers Limited Terry loom having programmable pile forming elements
US5499662A (en) * 1993-10-14 1996-03-19 Sulzer Rueti Ag Method for preventing the formation of fabric blemishes by controlling beat-up in a loom

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1125861B (it) * 1979-11-26 1986-05-14 Nuovo Pignone Spa Dispositivo perfezionato per variare la posizione di battuta del pettine in macchine tessili per tessuti a spugna

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US937139A (en) * 1906-12-31 1909-10-19 Crompton & Knowles Loom Works Terry-loom.
GB220891A (en) * 1924-02-21 1924-08-28 Harry Taylor Improvements in terry looms
US1739192A (en) * 1927-12-12 1929-12-10 Crompton & Knowles Loom Works Loom to weave terry piles of varying heights
US2099780A (en) * 1934-05-12 1937-11-23 Casteele Marc Van De Apparatus for weaving terry fabric
FR993175A (fr) * 1949-06-09 1951-10-29 Régulateur de boucle pour métiers à tisser les tissus bouclés
US2599313A (en) * 1949-04-07 1952-06-03 Berg Gustav Beating up mechanism for looms, especially for manufacturing terry toweling
US2947327A (en) * 1959-01-13 1960-08-02 West Point Mfg Co Reed positioning mechanism for terry looms
US3170490A (en) * 1963-06-14 1965-02-23 Cannon Mills Co Reed motion control for terry loom

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US937139A (en) * 1906-12-31 1909-10-19 Crompton & Knowles Loom Works Terry-loom.
GB220891A (en) * 1924-02-21 1924-08-28 Harry Taylor Improvements in terry looms
US1739192A (en) * 1927-12-12 1929-12-10 Crompton & Knowles Loom Works Loom to weave terry piles of varying heights
US2099780A (en) * 1934-05-12 1937-11-23 Casteele Marc Van De Apparatus for weaving terry fabric
US2599313A (en) * 1949-04-07 1952-06-03 Berg Gustav Beating up mechanism for looms, especially for manufacturing terry toweling
FR993175A (fr) * 1949-06-09 1951-10-29 Régulateur de boucle pour métiers à tisser les tissus bouclés
US2947327A (en) * 1959-01-13 1960-08-02 West Point Mfg Co Reed positioning mechanism for terry looms
US3170490A (en) * 1963-06-14 1965-02-23 Cannon Mills Co Reed motion control for terry loom

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058628A (en) * 1988-07-08 1991-10-22 Sulzer Brothers Limited Terry loom having programmable pile forming elements
US5499662A (en) * 1993-10-14 1996-03-19 Sulzer Rueti Ag Method for preventing the formation of fabric blemishes by controlling beat-up in a loom

Also Published As

Publication number Publication date
CH494296A (de) 1970-07-31
MY7600017A (en) 1976-12-31
DE2003809A1 (de) 1970-08-13
FR2030213A1 (enrdf_load_stackoverflow) 1970-10-30
JPS4944019B1 (enrdf_load_stackoverflow) 1974-11-26
GB1295714A (enrdf_load_stackoverflow) 1972-11-08
BE745226A (fr) 1970-07-01

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