US3241573A - Reed and shuttle driving apparatus for a progressively shedding type loom - Google Patents

Reed and shuttle driving apparatus for a progressively shedding type loom Download PDF

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Publication number
US3241573A
US3241573A US294958A US29495863A US3241573A US 3241573 A US3241573 A US 3241573A US 294958 A US294958 A US 294958A US 29495863 A US29495863 A US 29495863A US 3241573 A US3241573 A US 3241573A
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United States
Prior art keywords
reed
reed teeth
teeth
groups
shuttle
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Expired - Lifetime
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US294958A
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English (en)
Inventor
Fend Heinrich
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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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
    • D03D47/12—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
    • D03D47/26—Travelling-wave-shed looms
    • D03D47/262—Shedding, weft insertion or beat-up mechanisms
    • D03D47/263—Weft insertion and beat-up mechanisms
    • 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

Definitions

  • the invention relates to beat-up means for progressive shedding looms with a plurality of exchangeable shuttle driving members lying side by side and distributed over the whole width of the warp. On each member there is attached a group of reed teeth for beating up the weft thread, the reed teeth of all groups having a constant dent over the whole width of the beat-up assembly.
  • the groups of reed teeth have a width, and accordingly their driving members have also a uniform width or pitch, in the order of magnitude of 1.9685 inches. With such a width it is easily possible to grade the number of reed teeth per group finely enough to accommodate a large range of warp densities.
  • the object of the invention consists in providing a beat-up device for progressive shedding looms with a common mechanical drive for the shuttles and the reed having narrow exchangeable packets of reed teeth to allow a variety of warps having a great variety of densities to be used with a constant number of warp threads between any two adjacent reed teeth.
  • progressive shed is limited to the sheds formed across the width of the warp and the term wave is intended to include those areas of the warp in which a shed is formed and the reed and drive means involved in functioning in each formed shed and the undulating configuration through which they and the warp threads move.
  • a beat-up device for progressive shedding looms comprising in combination: a fixed casing, a plurality of shuttle drive members lying side by side distributed over the whole width of the warp, and guided on said casing, a group of reed teeth mounted on each of said drive members for beating up the weft thread, the reed teeth being uniformly spaced over the whole width of the warp and the individual groups of reed teeth differing from one another in their number of reed teeth, and driving means mounted on said casing in operation reciprocating said members with a mutual ofiset corresponding to the wave or shed shape.
  • any densities of warp threads can be taken into account, since the quotient of the sum of all Warp threads and that of all driving members need no longer be a whole number, such as ihitherto, which restricted considerably the number of the various warp densities hitherto usable.
  • FIGURE 1 is a side elevation in section of a beatup device with the shuttle drive, and with the shuttle in the weaving shed, some components lying further back being omitted;
  • FIGURE 2 shows the same arrangement in front elevation with the casing broken away and with the reed teeth partly broken oif;
  • FIGURE 3 is a plan view showing diagrammatically the driving members with the reed teethpartly broken olt in their positions offset wave shape in the form of one travelling wave length;
  • FIGURE 4 diagrammatically shows three groups of reed teeth with equal numbers of teeth according to the prior art, for the explanation of various relations;
  • FIGURE 5 diagrammatically shows in elevation five groups of reed teeth having different numbers of teeth according to the invention
  • FIGURE 6 diagrammatically shows a modification of six groups of reed teeth having different numbers of reed teeth
  • FIGURE 7 illustrates a detail of FIGURE 1 upon an enlarged scale
  • FIGURE 8 is a View illustrating two consecutively ararnged cross-sections as indicated by the section lines VIII.
  • FIGURE 1 on a shaft 9 and 9a, respectively, sets 3 and 4 of cam discs are fitted by means of keys 10 and 10a, respectively which cam discs are individually denoted 3a, 3b, 3c, 3d etc. and 4a, 4b, 4c, 4d etc. in FIGURE 1 and are arranged one behind the other, each of these cam discs being angularly offset a certain amount on the shaft 9 and 9a, respectively, relative to the subsequent cam disc.
  • levers 1 with rollers 2 are mounted pivotally independently of each other, those levers individually denoted 1a, 1b, 10 etc. with a roller 2a, 2b, 2c etc. journalled on a pin 5a, 5b, 50 respectively being arranged between each cooperating pair of discs such as 3a and 4a, 3b and 4b, 3c and 40 etc. of the discs, respectively.
  • the sets of cam discs 3, 4 are so constructed that, upon synchronous rotation of the two shafts 9 and 90, they are permanently in contact without any play with the rollers 2, and move the slides 7 by means of the levers 1 in an identical manner but with a phase offset in accordance with a predetermined law defining the slope of the travelling shed, toand-fro from a rear end position to a forward beat-up position.
  • a dovetailshaped slot 13 extending transversely of the slots 8 over the full extent of the casing 32 serves for accommodating a ledge 12, which in turn holds all the slides 7 in the slots 8.
  • the slides 7 carry, as shown in FIGURE 1, at their left hand side ends a forked projection 14 having a recess 15.
  • An arcuate shuttle 16 engages with its likewise arcuate lower rib 2i] and its two flanks 21 and 31 (FIGURE 3) into a sickle-shaped guide formed by the recesses of the forked projections of a plurality of slides 7, which guides represents a wave trough as viewed from the fell 26 Within the wave shape of the mutually offset recesses 15.
  • FIGURE 3 A convenient shape of the travelling wave is illustrated in FIGURE 3.
  • the shape shown repeats itself any time after an angular offset of 360 of the cam discs so that permanently five to eight of such waves are formed.
  • the travelling waves thus formed by the projections 14 proceed in one or the other direction transversely of the warp threads depending on the sense of rotation, and thus carry along the shuttle l6 lying in the wave trough facing the fell 26.
  • Each shuttle 16 is in engagement only with a predetermined number of slides 7, namely with those, which actually form the trough of the wave, and has for this purpose a concave formation of the driving and guiding surfaces.
  • each slide which group is held together by means of a connecting member 23.
  • Each of the slides 7 together with its group 27 of reed teeth is exchangeable, for which purpose however firstly the ledge 12 and the cover 38 are to be removed.
  • the warp threads 25 enclosing the shuttle run between the individual reed teeth 22 to the fell 26 and thus form the weaving shed, in which the shuttle is held by the slides 7 and their projections 14, respectively.
  • the individual reed teeth 22 are moreover connected at their upper ends by outer connecting members 24.
  • the reed teeth 22 serve to beating-up the weft thread into the fell 26 in the forward beating-up position of the slides 7, in which the projections 14 have emerged from the weaving shed.
  • the weft thread 28 is stored in a cavity in the shuttle to be delivered therefrom to the fell of the fabric during operation. In order to keep the shuttle small, preferably only a storage of weft thread corresponding to one pick is accommodated therein.
  • the entire length of the side 21 of the shuttle 16 contacts the rear edge 19 of the recess in the projection 14 and also the forward edge 18 of the recess of the projection contacts the flank 31 of the shuttle. Since the two edges 18 and 1% converge upwardly, the recesses 15 diverge downwardly. Since the rib 20 has a profile corresponding to the recesses 15, the shuttle, which rests with its underside on the upper edges of the projections 14, is firmly guided in these projections, so that it can move only laterally in accordance with the movement of the slides 7.
  • the slide 7 is at the rear dead centre position and is accordingly for a moment at a standstill.
  • T as the number of teeth must be a whole number.
  • the number of warp threads per 0.3937 inch amounts to about 20 to 60, while the number of warp threads between any two adjacent reed teeth varies between 1 and 3. Assuming for example E 2 and S:0.l968 inch. From this it follows that Since T must be a whole number, the assumption of a constant number of warp threads between any two adjacent reed teeth implies necessarily the use of warps having a number of warps per inch K which is a whole number multiple of four, ie for example warps having a figure of K 20 in conjunction with a number of reed teeth per group T:5 as according to FIGURE 4.
  • any two consecutive groups of reed teeth 27 constitute a formation repeating itself all over the width of the weave, the individual groups of reed teeth having numbers of reed teeth differing from one another.
  • one of the two groups of reed teeth of a formation has six, and the other has seven reed teeth.
  • FIGURE 5 shows that the individual groups of reed teeth must have different lateral positions relative to their associated driving members i.e. to their slides in order to permit a regular pitch of the slides.
  • FIGURE 6 which shows a modified embodiment by way of example, any four consecutive groups of reed teeth 27 form an analogous formation, three groups of each formation having five, and any fourth group having six reed teeth.
  • For the total number of teeth T of one formation there results, with a figure of E 2, the relation:
  • any warp having a whole number of warp threads per 0.3937 inch may be used.
  • the total number of reed teeth T' of a formation is likewise 21, i.e. as illustrated in FIGURE 6, any three groups of reed teeth of a formation have five, and the fourth has six reed teeth.
  • a beat-up device for the weft thread in progressive shedding looms with a short wave length comprising in combination a fixed casing, a plurality of shuttle drive members lying side by side distributed over the whole width of said beat-up device, means guiding said members on saidv casing, reed teeth uniformly spaced over the whole width of the warp, a group of reed teeth mounted on each of said drive members for beating-up the weft thread, said groups of reed teeth differing from one another in their lateral position relative to their associated drive member, said groups of reed teeth differing from one another in their number of reed teeth whereby formations of consecutive groups of reed teeth of different numbers of reed teeth will recur identically over the whole width of the warp, and driving means mounted on said casing reciprocating said members with a mutual offset corresponding to the Wave shape.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
US294958A 1962-07-23 1963-07-15 Reed and shuttle driving apparatus for a progressively shedding type loom Expired - Lifetime US3241573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH879762A CH409818A (de) 1962-07-23 1962-07-23 Anschlagvorrichtung für Wellenwebmaschinen

Publications (1)

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US3241573A true US3241573A (en) 1966-03-22

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ID=4344840

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US294958A Expired - Lifetime US3241573A (en) 1962-07-23 1963-07-15 Reed and shuttle driving apparatus for a progressively shedding type loom

Country Status (6)

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US (1) US3241573A (es)
CH (1) CH409818A (es)
DE (1) DE1286976B (es)
ES (1) ES289803A1 (es)
GB (1) GB1040216A (es)
SE (1) SE306289B (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379223A (en) * 1966-07-22 1968-04-23 Oerlikon Buhrle Holding A G Beat-up mechanism for travelling-wave shedding looms
US3996972A (en) * 1974-07-06 1976-12-14 Ruti Machinery Works Ltd. Arrangement for actuating laminas on a wave-type loom

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106222856B (zh) * 2016-09-14 2017-08-29 南通纺织丝绸产业技术研究院 一种电子控制筘片升降钢筘及其制作方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US720181A (en) * 1901-06-19 1903-02-10 Levi E Salisbury Multiple-shuttle loom.
DE1072569B (de) * 1959-12-31 Durkoppwerke Aktiengesellschaft, Bielefeld Flachwebmaschine mit horizontalem Kettenfadenverl'auf sowie mit längs der Webbreite als Wanderwelle fortschreitender Fachbildung
FR1237034A (fr) * 1958-10-09 1960-07-22 Métier à tisser à mouvement ondulatoire

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT221043B (es) * 1958-06-27 1962-04-25 Maschinenfabrik Carl Zangs Aktien-Gesellschaft

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072569B (de) * 1959-12-31 Durkoppwerke Aktiengesellschaft, Bielefeld Flachwebmaschine mit horizontalem Kettenfadenverl'auf sowie mit längs der Webbreite als Wanderwelle fortschreitender Fachbildung
US720181A (en) * 1901-06-19 1903-02-10 Levi E Salisbury Multiple-shuttle loom.
FR1237034A (fr) * 1958-10-09 1960-07-22 Métier à tisser à mouvement ondulatoire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379223A (en) * 1966-07-22 1968-04-23 Oerlikon Buhrle Holding A G Beat-up mechanism for travelling-wave shedding looms
US3996972A (en) * 1974-07-06 1976-12-14 Ruti Machinery Works Ltd. Arrangement for actuating laminas on a wave-type loom

Also Published As

Publication number Publication date
SE306289B (es) 1968-11-18
DE1286976B (de) 1969-01-09
ES289803A1 (es) 1963-11-01
CH409818A (de) 1966-03-15
GB1040216A (en) 1966-08-24

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