US3399701A - Reed for a loom - Google Patents

Reed for a loom Download PDF

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Publication number
US3399701A
US3399701A US506066A US50606665A US3399701A US 3399701 A US3399701 A US 3399701A US 506066 A US506066 A US 506066A US 50606665 A US50606665 A US 50606665A US 3399701 A US3399701 A US 3399701A
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United States
Prior art keywords
reed
warp threads
shed
fabric
loom
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US506066A
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English (en)
Inventor
Strake Lambertus Te
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Machinefabriek L te Strake NV
Original Assignee
Strake Maschf Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Strake Maschf Nv filed Critical Strake Maschf Nv
Application granted granted Critical
Publication of US3399701A publication Critical patent/US3399701A/en
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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
    • D03D49/60—Construction or operation of slay
    • D03D49/62—Reeds mounted on slay
    • 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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/277—Guide mechanisms
    • D03D47/278—Guide mechanisms for pneumatic looms
    • 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
    • D03D49/60—Construction or operation of slay

Definitions

  • a reed for a jet-operated loom comprising upper and lower bars that support reed blades, upper and lower covers which extend from the beating sides of the upper and lower bars, respectively; which have converging opposed surfaces for delimiting the upper and lower mats of warp threads forming the shaft; and which have closely spaced outer edges extending adjacent to the woven fabric, the reed being mounted to pivot upon an axis which is substantially spaced, on the fabric side, from a plane which is perpendicular to the fabric and passes through the beaten edge of the fabric, so that during the beating movement of the reed, the lower cover passes just below the lower mat of warp threads and below the fabric and the upper cover is lifted off the upper mat of warp thread
  • the invention relates to improvements in or relating to a reed for a loom, in which blades are provided between an upper bar and a lower bar of the reed; r
  • the shed is as small as possible, in order to maintain the opening of the warp threads and thereby the maximum locus of movement of the shafts reasonably small, whilst this limitation also makes possible a decrease of the reed stroke.
  • the shed must not be too small, because this would entail the risk that the weft introduced in the shed may at its front end come into contact with the warp threads, whereby the weft becomes entangled and does not reach the other end of the shed.
  • the invention aims at providing a reed with which a very small opening of the warp threads and thereby a very small shed can be attained, without running the risk that the weft may come into contact with the warp threads during its movement from one side of the shed towards the other side thereof.
  • this is attained in that one or more covers parallel to the bars of the reed are provided at the beating side of the reed, which covers extend in such a way from the reed, that they delimit the shed formed by the warp threads outside these warp threads.
  • a substantially closed tunnel is obtained, in which an airjet of high velocity can be generated, without an excessively large quantity of air leaving the shed in transverse direction, such as between the warp threads.
  • the opposed sides of the covers on top of and below the shed converge in the direction away from the reed and delimit a narrow slot between them, for passing the warp threads or the produced fabric. 1
  • a shed is obtained which constitutes a closedtunnel and in which no air can leak off between the warp threads at the upper or the lower side of the shed;
  • the opposed surfaces of the upper cover and the lower cover are 'so positioned, that in the opened position of the shed, these surfaces are parallel to the upper mat of warp threads and the lower mat of warp threads respectively and that the confronting surfaces of the upper cover and the lower cover serve as stops for the upper warp and the lower warp respectively ofthe shed.
  • the reed is so designed, that the cover at the upper side of the shed is made from transparent material.
  • the cover at the upper side of the shed is made from transparent material.
  • the cover on top of the shed is so designed that this constitutes a cylinder lens, the axis of which is parallel to the bars of the reed.
  • An advantage thereof is, that the warp threads, which are an obstacle for the observation of the weft, are not magnified, whereas the weft can be subjected to a considerable magnification.
  • FIGURE 1 is an isometric elevation of a reed according to the invention.
  • FIGURE 2 is a diagrammatical elevation of the reed as shown in FIGURE 1 in a position in which the reed enters into contact with the fabric as well as in a position in which a weft can be blown into the shed.
  • FIGURE 3 is a perspective view of a loom provided with a pneumatic device for weft insertion on which loom a reed according to the invention can be used.
  • the reed comprises a heavy tube 1 extending transverse to the loom below the fabric and the warp threads as shown in FIG. 2, to which tube the slay swords 2a and 2b are attached.
  • FIGURE 2 shows the location of the axis 1a of the heavy tube 1, relative to a plane 9a that is perpendicular to the fabric and passes through the beaten edge 9b of the fabric.
  • the slay swords can be very short in order to impart a certain toppling movement to the reed, and in order to minimize the forces acting on the reed due to its inertia during the rapid reciprocating movement, such as 400 strokes per minute.
  • the slay swords 2a and 2b carry the lower bar 3 and the upper bar 4 of the reed, which bars will not be described in detail, since they do not constitute a major part of the invention.
  • the blades 5 of the reed are arranged in a manner known per se.
  • the blades are somewhat arcuate, in order to keep the upper angle and the lower angle with respect to the warp threads equal to each other.
  • Covers 6 and 7 respectively are arranged parallel to the bars 3 and 4 of the reed. These covers extend so far from the reed constituted by the blades 5, that they completely cover the warp threads of the shed.
  • the covers 6 and 7 delimit a narrow slot 8 in the direction of the fabric, through which slot the fabric can pass when the reed meets its stop, as has been shown in FIGURE 2.
  • the opposed surfaces 10 and 11 of the covers 6 and 7 respectively are flat and are parallel to the lower mat of warp threads 12 and the upper mat of Warp threads 13 respectively.
  • the position of these surfaces 10 and 11 is such that the warp threads 12 rest against the surface 10 and the warp threads 13 rest against the surface 11 when the reed is in its completely withdrawn position.
  • This withdrawn position has been shown in FIGURE 2 by thin lines. In this way, it is possible to obtain a shed with dimensions of no more than 18 ml. by 13 ml., e.g.
  • the height of the shed is only 13 ml. and the depth of the shed, e.g. the perpendicular distance of the reed from the fabric is only 18 ml. Notwithstanding these small dimensions, which until now could not be realized, the weft does not enter into contact with the Warp threads, because the warp threads lie against the surfaces 10 and 11.
  • the cover 6 can pass just below the lower mat of warp threads 12 and below the fabric 9, whilst the upper cover 7 is lifted off the mat of warp threads and the fabric.
  • the cover 7 is transparent, so that the shed can be observed through the upper face 14 of the cover. If this face 14 is arcuate, as has been shown with a dotted line 15, the cover 7 constitutes a cylinder lens, which projects a large amount of light into the shed and which makes it possible to observe the weft in a magnified condition.
  • the surface 10 has a colour which markedly deviates from the colour of the warp threads and the weft.
  • the warp threads 12 and 13 are visible. Further a pneumatic weft inserting apparatus is generally indicated with the reference nu- 4 meral 16.
  • the slay swords 2a and 211 support the upper bar 4 for the blades 5.
  • Reed for a jet-operated loom comprising upper and lower bars that support reed blades
  • the improvement comprises upper and lower covers which extend from the beating sides of the upper and lower bars, respectively; which have converging opposed surfaces for delimiting the upper and lower mats of warp threads forming the shed; and which have closely spaced outer edges extending adjacent to the woven fabric, the reed being mounted to pivot upon an axis which is substantially spaced, on the fabric side, from a plane which is perpendicular to the fabric and passes through the beaten edge of the fabric, so that during the beating movement of the reed, the lower cover passes just below the lower mat of warp threads and below the fabric and the upper cover is lifted off the upper mat of warp threads and the fabric.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
US506066A 1964-11-03 1965-11-02 Reed for a loom Expired - Lifetime US3399701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6412786A NL6412786A (fr) 1964-11-03 1964-11-03

Publications (1)

Publication Number Publication Date
US3399701A true US3399701A (en) 1968-09-03

Family

ID=19791378

Family Applications (1)

Application Number Title Priority Date Filing Date
US506066A Expired - Lifetime US3399701A (en) 1964-11-03 1965-11-02 Reed for a loom

Country Status (6)

Country Link
US (1) US3399701A (fr)
BE (1) BE671450A (fr)
CH (1) CH437166A (fr)
FR (1) FR1563631A (fr)
GB (1) GB1130859A (fr)
NL (1) NL6412786A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557845A (en) * 1968-07-04 1971-01-26 Elitex Zavody Textilniho Guiding device for picked weft threads
US3880198A (en) * 1972-05-10 1975-04-29 Rueti Te Strake Bv Weaving machine
US4031926A (en) * 1974-09-11 1977-06-28 Ruti Machinery Works Ltd. Loom with means for introducing the filling threads by means of a fluid
US4458730A (en) * 1981-03-26 1984-07-10 Ergotron S.A.S. Di Dondi Benelli Dore & C. Loom with pneumatic weft insertion
US4478259A (en) * 1981-03-05 1984-10-23 Ruti Machinery Works, Ltd. Reed for jet weaving machines

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6811471A (fr) * 1968-08-12 1970-02-16
CH554435A (de) * 1973-06-25 1974-09-30 Rueti Ag Maschf Webmaschine mit einrichtungen zum eintragen der schussfaeden mittels eines fluidums.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1721940A (en) * 1928-06-28 1929-07-23 Lorraine Mfg Company Pneumatic weft-introducing mechanism for looms
US2279759A (en) * 1940-11-19 1942-04-14 James H Moore Loom inspection device
US2480645A (en) * 1947-08-22 1949-08-30 Martin D Gourlay Shuttle guard for looms
GB745345A (en) * 1951-10-31 1956-02-22 Arthur Greenwood Loom shuttle guard
US3229725A (en) * 1963-02-06 1966-01-18 Saito Hifumi Weaving machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1721940A (en) * 1928-06-28 1929-07-23 Lorraine Mfg Company Pneumatic weft-introducing mechanism for looms
US2279759A (en) * 1940-11-19 1942-04-14 James H Moore Loom inspection device
US2480645A (en) * 1947-08-22 1949-08-30 Martin D Gourlay Shuttle guard for looms
GB745345A (en) * 1951-10-31 1956-02-22 Arthur Greenwood Loom shuttle guard
US3229725A (en) * 1963-02-06 1966-01-18 Saito Hifumi Weaving machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557845A (en) * 1968-07-04 1971-01-26 Elitex Zavody Textilniho Guiding device for picked weft threads
US3880198A (en) * 1972-05-10 1975-04-29 Rueti Te Strake Bv Weaving machine
US4031926A (en) * 1974-09-11 1977-06-28 Ruti Machinery Works Ltd. Loom with means for introducing the filling threads by means of a fluid
US4478259A (en) * 1981-03-05 1984-10-23 Ruti Machinery Works, Ltd. Reed for jet weaving machines
US4458730A (en) * 1981-03-26 1984-07-10 Ergotron S.A.S. Di Dondi Benelli Dore & C. Loom with pneumatic weft insertion

Also Published As

Publication number Publication date
GB1130859A (en) 1968-10-16
BE671450A (fr) 1966-02-14
CH437166A (de) 1967-05-31
FR1563631A (fr) 1969-04-18
NL6412786A (fr) 1966-05-04

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