US3809130A - Arrangement for driving weft insertion means - Google Patents

Arrangement for driving weft insertion means Download PDF

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Publication number
US3809130A
US3809130A US00283058A US28305872A US3809130A US 3809130 A US3809130 A US 3809130A US 00283058 A US00283058 A US 00283058A US 28305872 A US28305872 A US 28305872A US 3809130 A US3809130 A US 3809130A
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US
United States
Prior art keywords
lamellae
arrangement according
lamella
spacer
coil spring
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
US00283058A
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English (en)
Inventor
E Strauss
C Karcher
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.)
Ruti Machinery Works Ltd
Maschinenfabrik Rueti AG
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Maschinenfabrik Rueti AG
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.)
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Publication date
Application filed by Maschinenfabrik Rueti AG filed Critical Maschinenfabrik Rueti AG
Application granted granted Critical
Publication of US3809130A publication Critical patent/US3809130A/en
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    • 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
    • D03D47/266—Weft insertion mechanisms

Definitions

  • Denton ABSTRACT An arrangement for driving weft insertion means on a wave type loom having a multiplicity of lamellae for driving the insertion means, the lamellae arranged in a row, juxtaposed at their wide sides and, in operation, adapted to pivot, whereby one follows after the other so that, in their entirety, they perform a wave-like movement, with the pivoting lamellae impinging in the zone of one of their ends obliquely against an edge of the insertion means so as to displace the latter.
  • FIG. 2a shows a lateral elevation of a lamella according to FIG. I, and the position of the drive shafts;
  • FIG. 2b shows a plan view of the lamella of FIG. 2a without the drive shafts
  • FIG. 3 is a top plan view of a portion of lamellae showing spacer means and an insertion means;
  • FIG; 4 shows an embodiment in which spacer means consist of small plates attached to a lamella
  • FIG. 5 shows an embodiment inwhich spacer means isof a cap type
  • FIG. 6 is a diagrammatic perspective view showing the spacer means designated as a-:spring and the mode of securing the spring to the lamellae;
  • FIG. 7 is an enlarged schematic plan view of a portion of the lamellae showing the spacer means desig nated as a spring and an'alternate mode of securing it to the lamellae.
  • the spacer means comprises a spring, one turn of which surrounds each such lamella end.
  • the spring On movement of the lamellae, the spring is drawn apart in'a direction substantially perpendicular to its axis. As this takes place, the spring produces the result that the lamellae are, in this direction, retained with mutually compensated or equalized spacing.
  • the movement ofthe lamellae is produced by pivoting thelatter about an axis.
  • the pivoting movement is produced by rotating two screw shafts at which the lamellae bear and which have an appropriate profile. Due to this construction of the present invention, there is therefore achieved the supplementary advantage that any inaccuracy in the screw shafts driving the lamellae (which may result for example from irregular wear) is compensated for by the spring. Furthermore, it becomes possible thereby to leave some clearance between the said screw shafts and the lamellae bearing thereon, whereby assembly of the screw shafts and of the lamellae is greatly facilitated.
  • FIG. 1 is an elevational view as seen from the front I of lamellae and of weft insertion means driven by the In all the figures, likeelements have been given the same reference numerals.
  • FIG. I shows a plurality of lamellae 11 arranged in a row, juxtaposed at their wide sides.
  • the lamellae l l are made from a thin material; the shape thereof can best be seen in FIGS. 2a and 2b.
  • FIG. 2a shows a lamella 1 l, as viewed in the direction of the wide side thereof, and
  • FIG. 2b shows the same lamella as viewed in the direction of its narrow side.
  • FIG. 1 shows the lamellae II from the front, i.e., the figure shows the right-hand end of the lamellae 11 in FIG. 2.
  • Each lamella 11 is formed with an aperture 12through which extends a shaft.
  • the v lamella maybe pivoted about the said shaft.
  • the pivoting of the lamellae 11 can for example be effected by driving them by rotating appropriately profiled screw shafts 13, the lamellae bearing continuously against the screw shafts 13 and being thus positively guided by the latter.
  • FIG. 2a shows a cross-section of the shafts 13.
  • the lamellae 11 are so pivoted that their forward free ends travel upwardly, then the forward free ends impinge as shown in FIG. 1 against the oblique rear edges 14 of the inserter means 15. Thereby, the inser tion means are displaced towards the left. They travel through the sheds formed by the warp threads 16 and each such insertion means inserts during its movement a weft thread 17.
  • the warp threads 16 are, for the sake of clarity, shown arranged less dense in the drawing than they actually are.
  • Reference numeral 18 desighates the cloth being woven.
  • spacer means are attached to the latter at their front free end.
  • Said spacer means consists, as shown in FIG. 1, of small round plates (i.e., discs) 20.
  • Each lamella 11 is provided with sucha disc 20. Due to the provision of such spacer means, each lamella impinges against the disc 20 of the lamella arranged adjacent it to the right.
  • the lamellae I1 acquire in their entirety a degree of rigidity such that, even if they are extremely thin, they no longer flex or bend laterally. Consequently, the ends of the lamellae ll bear accurately along the rear edge 14., thereby affording the desired distribution of the drive forces along the said edge to smoothly move the insertion means 15.
  • FIG. 3' which, thus, relative to FIG. 1 is a view in the direction from the cloth 18- towards the inserter means 15, there are seen insertion means 15, warp threads 16 and lamellae 11.
  • Each of the lamellae 11 is arranged to be displaceable between two guide elements 19. The latter consist of plates and it is their purpose to prevent lateral flexing of the lame]- lae 11.
  • the spacer means 21 shown in FIG. 3 consists of small round plates or discs 21 the diameter of which is substantially equal to the width of the lamellae.
  • Each disc 21 is pressed into an associated aperture formed in the front end of a lamellae.
  • the small discs 21 are simultaneously brought to their precise thickness.
  • the spacer means shown in FIG. 4 consists of small plates 22 welded onto the lamellae llQThe length of the plates 22 is larger than the width of the lamellae 11.
  • each element 23 is provided with a slot 27, the size of which is adapted to the end portion of the lamellae ll.
  • the small plates 20, 21, 22 or the caps 23 must, width-wise of the lamella 11, extend at least for such a distance that during all operational phases they bear continuously on the adjacent lamella or on the adjacent lamellae, in order that it may not be possible for these elements to foul each other.
  • the spacer means comprises a or coil spring 24. From the diagrammatic perspective view of this figure, it will be perceived 'how each lamella 11 is embraced by a turn of the spring 24. If the spring 24 is designed to be adequately thick, it will produce the result (to correspond to the effect of. the elements to 23 of the preceding embodiments) that permanently predetermined mutual spacing is available between the ends of the lamellae l 1 On providing a spring as spacer means, however,
  • the notches 24 formed in the lamellae 11 as shown in FIG. 6 have the result that the spring 24 cannot be displaced in the longitudinal direction of the lamellae 11.
  • FIG. 7 shows, once again, the front ends of lamellae l 1, as a plan view drawn to an enlarged scale.
  • aspring 24 is provided.
  • the abutments or stops are disposed within the turns of the spring 24, i.e., they are arranged coaxial to the axis of the spring 24 and a stop or abutment is secured to each lamella.
  • stops 26 It is also possible to so dimension the stops 26 that they exactly fill the spacing between two lamellae. Then, the stops 26 act as spacer means for the mutual spacing of the ends of the lamellae 11.
  • the spring 24 serves, in this case, for equalizing the lamella spacings parallel to the warp direction.
  • stops 26 For spacing the lamellae 11 by means of stops 26 arranged to correspond to the example of FIG. 7, it is per se adequate if at least those of the stops 26 which are more remote from the front ends of the lamellae and thus nearer tothe inserter means 15 extend to the desired'extent, as a rule completely, over the intermediate space between adjacent lamellae 11.
  • said spacer elements comprises small plates positioned so as to bear on a lateral wall of each lamella so as to provide uniform, reciprocal spacing between lamellae adjacent the said other ends.
  • said spacer means comprises a plurality of spacer elements, each of which is formed with a slot, and through the agency of its slot, a spacer element is pushed over said other end of each second lamella and is applied in cap-like manner thereon so as to produce mutual spacing between the ends of adjacent lamellae.
  • said spacer means comprises a coil spring arranged along the row of lamellae, each of said lamellae being surrounded by a turn of said coil spring so as to produce adjacent, said other ends of said pivoted lamellae predetermined, mutual spacing in the direction of the warp threads and uniform, mutual interspaces.
  • said coil spring positioning means is in the form of notches in the zone of said other end of each of the lamellae extending parallel in the longitudinal direction of said lamellae for retaining said coil spring toprevent displacement thereof.
  • said coil spring positioning means comprises a stop attached to said each lamellae in the zone of said other end and disposed externally of the turns surrounding said lamellae, and each stop is secured to said lamella at that side at which the turn portion adjacent the stop bears on the lamella.
  • said spring positioning means is formed from'stops p0- sitioned on said lamellae and disposed within the turns of the coil spring.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US00283058A 1971-09-03 1972-08-23 Arrangement for driving weft insertion means Expired - Lifetime US3809130A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1293171A CH535850A (de) 1971-09-03 1971-09-03 Anordnung zum Antreiben von Schussfadeneintragsorganen

Publications (1)

Publication Number Publication Date
US3809130A true US3809130A (en) 1974-05-07

Family

ID=4387726

Family Applications (1)

Application Number Title Priority Date Filing Date
US00283058A Expired - Lifetime US3809130A (en) 1971-09-03 1972-08-23 Arrangement for driving weft insertion means

Country Status (10)

Country Link
US (1) US3809130A (cs)
JP (1) JPS51229B2 (cs)
BE (1) BE788305A (cs)
CA (1) CA961372A (cs)
CH (1) CH535850A (cs)
CS (1) CS160063B2 (cs)
FR (1) FR2150981B1 (cs)
GB (1) GB1383035A (cs)
IT (1) IT967122B (cs)
SU (1) SU581883A3 (cs)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900050A (en) * 1973-02-02 1975-08-19 Rueti Ag Maschf Reed dent arrangement
US3963059A (en) * 1973-11-29 1976-06-15 Ruti Machinery Works Ltd. Beating-up arrangement for a wave-type weaving machine
US4040451A (en) * 1976-08-23 1977-08-09 Barber-Colman Company Triaxial weaving machine having heddles with weftwise lateral projections
US4694867A (en) * 1985-10-08 1987-09-22 Klimovskoe Spetsialnoe Konstruktorskoe Bjuro Po Proektirovaniju Tkatskogo Oborudovania Loom reed

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1162294B (de) * 1958-06-27 1964-01-30 Zangs Ag Maschf Schussfaden-Anschlagvorrichtung bei einer Flachwebmaschine
US3124165A (en) * 1964-03-10 Drive mechanism for high production loom
US3379223A (en) * 1966-07-22 1968-04-23 Oerlikon Buhrle Holding A G Beat-up mechanism for travelling-wave shedding looms

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124165A (en) * 1964-03-10 Drive mechanism for high production loom
DE1162294B (de) * 1958-06-27 1964-01-30 Zangs Ag Maschf Schussfaden-Anschlagvorrichtung bei einer Flachwebmaschine
US3379223A (en) * 1966-07-22 1968-04-23 Oerlikon Buhrle Holding A G Beat-up mechanism for travelling-wave shedding looms

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900050A (en) * 1973-02-02 1975-08-19 Rueti Ag Maschf Reed dent arrangement
US3963059A (en) * 1973-11-29 1976-06-15 Ruti Machinery Works Ltd. Beating-up arrangement for a wave-type weaving machine
US4040451A (en) * 1976-08-23 1977-08-09 Barber-Colman Company Triaxial weaving machine having heddles with weftwise lateral projections
US4694867A (en) * 1985-10-08 1987-09-22 Klimovskoe Spetsialnoe Konstruktorskoe Bjuro Po Proektirovaniju Tkatskogo Oborudovania Loom reed

Also Published As

Publication number Publication date
DE2240744A1 (de) 1973-03-08
IT967122B (it) 1974-02-28
SU581883A3 (ru) 1977-11-25
JPS51229B2 (cs) 1976-01-06
CA961372A (en) 1975-01-21
FR2150981B1 (cs) 1975-01-03
BE788305A (fr) 1973-01-02
JPS4835179A (cs) 1973-05-23
CS160063B2 (cs) 1975-02-28
GB1383035A (en) 1975-02-05
FR2150981A1 (cs) 1973-04-13
CH535850A (de) 1973-04-15
DE2240744B2 (de) 1976-08-19

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