US2544766A - Anticreep warp-lifting roller in circular weaving looms - Google Patents

Anticreep warp-lifting roller in circular weaving looms Download PDF

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Publication number
US2544766A
US2544766A US72792A US7279249A US2544766A US 2544766 A US2544766 A US 2544766A US 72792 A US72792 A US 72792A US 7279249 A US7279249 A US 7279249A US 2544766 A US2544766 A US 2544766A
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United States
Prior art keywords
roller
warp
well
circular weaving
anticreep
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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
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US72792A
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English (en)
Inventor
Rabeux Jean
Jacob Raymond
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.)
SAINT FRERES SOC
SAINT FRERES Ste
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SAINT FRERES SOC
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Publication date
Application filed by SAINT FRERES SOC filed Critical SAINT FRERES SOC
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Publication of US2544766A publication Critical patent/US2544766A/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D37/00—Circular looms

Definitions

  • the present invention concerns circular weaving looms and aims more particularly at checking the tendency of the fabric to creep circumferentially in the direction of rotation of the shuttles.
  • the present invention consists in a roller provided at the rear of each shuttle, rotated about the loom well at a speed equal to that of the shuttle and of which the rim which is made of a thread-retaining material will slightly lift the warp thread sheets as it moves past the same and rotated at a peripheral speed higher than its speed of revolution about the well, with the result that each warp thread will be replaced on the well edge without any vibration at a point just a little behind the one it occupied when lifted therefrom by the roller.
  • roller according to the invention offsets the lateral displacement to which the warp threads are subjected in the direction of rotation of the shuttles due to the friction exerted thereupon by the latter and to the pull consequent to the insertion of the weft-thread.
  • said roller is called a warp-lifting roller.
  • the advantage with the roller according to the invention is that the wrap threads that are caught by the periphery thereof are shifted backwards (considering the direction of rotation of the shuttles) to a point behind the one occupied by each particular thread before it was crossed by the roller without any vibration being imparted to said thread; effectively, the undesired effect of such vibrations would be to immediately cancel the lifting action of the roller and to restore the warp threads to the positions occupied by the same on the edge of the well prior to the passage of the roller according to the invention. A further effect of such vibrations would be to curl the warp threads.
  • the rotational movement of the lifting roller according to the invention is derived from that of said driving roller.
  • the driving roller and thelifting roller may be keyed on one and the same shaft.
  • the ratio between the diameters of either roller may be so chosen 2 that the peripheral speed imparted to the lifting roller will tend to shift the warp threads contrawise to the direction of displacement of the said roller about the well.
  • the roller according to the invention may be used in combination with weft-thread combining the beating and warp-thread distributing devices.
  • the lifting roller may be located at the rear of a wheel provided at its periphery with spikes designed to press the weft thread into the shed.
  • the lifting action exerted upon the warp threads by the roller according to the invention is combined with a scraping of the warp threads effected by the shuttle, of which the weft thread inserting arm is provided with suitable spikes or scrapers.
  • Figure 1 is a radial section on line II in Fig. 3.
  • Figure 2 is a vertical section of the lifting roller taken on line II-II in Fig. 1.
  • Figure 3 is a plan View.
  • Figure 4 is a plan view showing a warp thread scraping device.
  • FIGS 5, 6 and 7 illustrate various embodiments of the spikes or scrapers for the combing or scraping of the warp threads.
  • Figure 8 is a plan view of aweaving loom equipped according to the invention.
  • the lifting roller I is keyed on one and the same shaft 2 as the driving roller 3 by which the shuttle 4 is propelled.
  • the shaft 2 is driven through the medium of a gear train 5, a shaft 6 and a pinion 1 which meshes with a fixed spur ring 8.
  • a gear train 5 As the housing 9 in which the rollers l and 3, the gear train 5, the shaft 6 and the pinion 1 are mounted is revolved about the well ll) of the loom with respect to the fixed spur ring 8, the pinion I is rotated and its movement is transmitted to the shaft 2 and to the rollers l and 3.
  • I'he rim I l of the roller l is made of rubber.
  • the peripheral speed of the roller l is slightly higher than the speed at which the same is revolved about the well, with the result that the warp threads that are lifted by the roller I are laid down again upon the edge l3 of the well II) at points thereon which (considering the direction in which the shuttles are run) lie behind those at which they were standing before they were lifted by the roller.
  • the aforedescribed action of theroller counteracts the a tendency of the fabric H to :creepground, i.:-e.
  • the arrow Fin Fig. 2 shows'tthe-direction ofthe peripheral speed of the roller I while the arrowzf denotes the direction of rotationtofthe shuttles, i'. e. the direction in which the roller I is revolved about the well ill.
  • the weft thread laying arm I! provided'on the shuttle carries spikes :Lfi which are effective to scrape the warp threads to.:sor,t them rout land 'to uniformize the distance between aeach :of them and the next one.
  • Figures 5, 6 and '7 illustrate :various embodiments of the spikes or scrapers :18.
  • the spikes or scrapers l8 'scrape the threads 12 and sort them out while the roller lifts the threads resting on the edge 43 of the well in the order of succession in which they stand jus't*be-- fore the passage of the said roller.
  • a circular weaving loom having a well and comprising at least one shuttle by means of which a weft thread is "laid between the ways thread sheets close to the top of the -well, -a warp-lifting roller positioned at 'the rear of each shuttle and revolved about the jloom well at a speed equal to that of the shuttle the rim of said roller being formed from a thread-retaining material and being adapted to slightly lift the warp threads as it moves past the same, said roller .be-
  • va propelling roller for each shuttle and means for simultaneously driving each warplifting roller and the related propelling roller.
  • each shuttle is provided with 1apropellingroller'mounted upon a shaft, and a tokeep them equally'spaced without any 'change in their 'order of succession while they are lifted clear of the top'edge-of the well, the said scraping means comprising a weft-laying arm rigid with the shuttle-and having-ajplurality of spikes provided thereon.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US72792A 1948-01-28 1949-01-26 Anticreep warp-lifting roller in circular weaving looms Expired - Lifetime US2544766A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR659417X 1948-01-28

Publications (1)

Publication Number Publication Date
US2544766A true US2544766A (en) 1951-03-13

Family

ID=9009654

Family Applications (1)

Application Number Title Priority Date Filing Date
US72792A Expired - Lifetime US2544766A (en) 1948-01-28 1949-01-26 Anticreep warp-lifting roller in circular weaving looms

Country Status (3)

Country Link
US (1) US2544766A (de)
DE (1) DE809652C (de)
GB (1) GB659417A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976890A (en) * 1955-06-03 1961-03-28 Sagem Circular loom

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228208B (de) * 1958-02-13 1966-11-03 Jean Dautricourt Vorrichtung zum Entfernen von Fremdkoerpern und dicken Stellen von den Kettenfaeden fuer Rundwebmaschinen
CN107435180B (zh) * 2017-07-14 2020-08-18 丁德光 一种具有栅栏式梭子跑道的圆织机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US503544A (en) * 1893-08-15 Circular loom
US2238658A (en) * 1938-03-15 1941-04-15 Saint Freres Sa Circular weaving loom
US2398956A (en) * 1942-02-14 1946-04-23 Saint Freres Device for combing warp threads and tightening the weft thread in a circular weavingloom

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US503544A (en) * 1893-08-15 Circular loom
US2238658A (en) * 1938-03-15 1941-04-15 Saint Freres Sa Circular weaving loom
US2398956A (en) * 1942-02-14 1946-04-23 Saint Freres Device for combing warp threads and tightening the weft thread in a circular weavingloom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976890A (en) * 1955-06-03 1961-03-28 Sagem Circular loom

Also Published As

Publication number Publication date
DE809652C (de) 1951-08-02
GB659417A (en) 1951-10-24

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