US1272924A - Weft-straightening apparatus. - Google Patents

Description

C. A. DURAN.

WEFT STRAIGHTENING APPARATUS. APPLICATION meri JAN. 4. |913.

1 ,272,924. Patented July 16, 1918.

2 SHEETS-SHEET 1.

6 1l f6 l j. 35 ;l

'm |1111 Tf l X7 l 1w i 59 35M 50 1 19 C. A. DURAN.

WEFT STRAIGHTENING APPARATUS.

APPLICATION FILED IAN. 4. 191s.

1 ,27 2,924. Patented July I6, 1918.

l 2 SHEETS-SHEET 2.

m: "xmms mens co.. Frama-uma., wasnmcrun. I:4 c.

Cil

Fig; 3.

CHARLES A. "nRANjorfCIIICAGo, ILLINOIS, AssIGNoR To BAUER & BLACK, or CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

WEFT-VSTRAIGIITENING APPARATUS.

To all whom t may concer-n: v

Be it known vthat l, CHARLES A. DQRAN, a citizen of the United States, residing at Chicago, in thecounty of r,Cook and State of Illinois, have invented certainV new and ius'elful Improvements in Y Weft Straightening Sielcatela@ Thls invention relates to lalfzparatus for A pparili'fuS of ywhich the following is a ,straightening the. Vweft L"of4 textile fabric.v afymanually straighten the weft-threads from time to time as may be necessary.A

The object of my invention is to A:provide an apparatus which automatically v straigggditensfthe weft threads when thrown 'intol operation, thus permitting a single operative tol control the winding of a ,plurality of Websy "flirt-luier objedt of-my 4invention'is. the

.provi'sion ofI 9a .plurality of jdriving rolls @dented 't0 vbis selectively moved by the orerative xinto engagementwith .portions of the web vto;tensionthe respective portions and straighten the weft threads. 1 y j Furtherwobjects/and advantages of my yinvention reside in 'the combinations hereinafter described aswillbe bctterun'derstoo'd by reference toV the Lfollowingv speciiication, whenv y read lin connection with the accomdrawing, illustrating the preferred embodiment thereof, in which-fy f Figure 1 is jalplan view ofthe invention;

Fig. 2 'is a section on the line '2 2 of e Fig. 3 `is an enlarged section through one offfthe web Supporting rolls, and y Fig. 4 is a section on the line 4:'-4 yof Referring tothe drawing 5 indicate's *a ,50 suitable frame to support the various parts of the apparatus. A. shaft 6 is vjournaled in the "frameandis provided with a pulley 7 `or other suitablel means` through which the .shaft may be .driven fram [a ,Source of power,

specification@ Letters Patent.

Patented J illy 16, 1918.

Application le'd January 4, Y1918. Serial No. 210,348.

Loosely mounted on the shaft 6 are a pluralit oflweb supporting rolls 8 each provider with a facing 9 preferablyv of rubber. YAdjacont each of the rolls 8 a ratchet 10 is vsecured to the shaft 6 in any suitable Vman- -ner as for example vby screws 11.

The ratchets 10 are therefore driven with the shaft. i Each of the web supporting rolls 8 ,is provided-with a pluraltyof pawls 12 pivkpo/ted atl13 thereon and each Vhaving an arm 1A supporting `aspring 15. The springs 15 `arejdisposed between the pawls v12 and the peripheries Tof the web supporting rolls 8, and "hold the pawls in vengagement with ythe ratchets 10. Thus wheny the shaft 6 and vFatchets 10 are driven in thel direction indicated by the arrowfin Fig. 4 the web supporting rolls 8 are driven 'in the same direction. The web supporting rolls are however, permitted to advance `in the same direction independently of and at an angular speed greater than the angular .speed of Vthe shaft 6. v

A shaft 16 is journaled in suitable bearings in rbrackets 17 secured to the frame 5. Ag-pulley 17 `is secured to the shaft 6 and is connected to a pulley 18 on the shaft 16 by across belt 19. 'Other suitable driving means may of course be substituted for the belt to drivethe shaft `16 in the opposite direction to the direction of rotation of the shaft ,6 and at a 4'higher angular speed. A plurality of bifuroated yarms 2O are loosely mounted on the shaft 16. Each arm 20 is .provided with a weft straightening roller 21 Sprockets 23 Ysecured to each of the weft straightening rolls 21 are fconnected by chains 24 to rsprockets l'25 secured to `the shaft 16. Thus the weft 'straightening rollers 21 are driven vat the angular speed of the shaft 16 and are rotated in a direction opposite to the direction of rotation of the supporting rolls 8. The web supporting yrolls 8 and weft straightenrollers 21 engage `opposite sides ofthe web 26 and draw therweb jin the same direc* tion as indicated by the arrow in Fig. 2.

. Each of the arms 20 is provided with a tail 27 on which a counter weight 28 is sup- ;ported and lheld by arse't screw 29 so that the counter weights may vbe vadjusted to exactlyfbalanc'e the weight ofthe arms 2O and weft straightening rollers 21, rod 29 see cured in the bracket 17 carries a plurality of springs 20 which resilientlyzlimit movement of the arms 20 in one direction 'by yengagement of the tails 27 therewith.

5 The mode of operation ,of..my. invention will be readily understood from the following brief description thereof.` rIhe web 2 6 passes over the web supporting rolls 8 as indicatedv in Fig.` 2.. The operative examines 10 itheY web from time 'to time and upon finding that a portion of the web is flagging so that the weft threads are not straight swings the corresponding arm or arms 2() to carry the -weft straightening roller or rollers v21 into engagement with the web.' Inasmuch as the peripheral speed of the weft straightening rollers- 21 is considerably higher than the normal speed of the web 26 as it passes over the web supporting rolls 8 that portion of the web with which the weft straightening roller or rollers 21 engages is tensioned and 'drawn forwardly at a higher rate of speed until the weft is again straight. The operative then swings the arm or arms 2O to disengage the'weft straightening roller or rollers 21 from the web. While a weft straightening roller 2l is in engagement with the web,

'the cooperating web supporting roll 8 is rotated at substantially the peripheral speed 30 of the weft straightening roller,'th`eY pawls 12 `riding over the teeth of the ratchet 10.

From the foregoing description it will be readily understood that I have perfected a simple and effective means for straightening the weft threads of textile fabrics. The apparatus may be rapidly thrown into and out ofoperation at the will of theoperative and consequently a single operative may control the Winding of a plurality'of webs. Thus 'a considerable economy is eifected, and the winding is made more uniform than has been possible by following the practice vof the prior art. f

4 Various changes may be made in the form, arrangement and construction of the parts without departing from the spirit or rscope of the invention or sacrificing any of its material advantages, the form hereinbefore described being merelyrthe preferred embodi# ment thereof, y

I claim: *71. In a weft straightening apparatus for textile fabrics, the combination of a web support and means actuated independently of the web and adjustable Vto engagement with the" web at selected 'positions trails- -verselythereof, and adapted to tension the portion of the web engaged, thereby straight- Yening the :weft threads. i

2. Ina weft straightening apparatus for textile fabrics, the combination of fa web support4 and individually adjustable i means actuatedfV independently of the web vand #adapted to engage Ywith the 'webat selected positions transversely thereof, and

'ening'tlneweft threads i.

5."Ii1 aweft straighteningapparatus, the combination of a web supportcomprisinga 'web 'as it passes said 'rolls' thereby nstraightplurality of driven rolls, and rotatable means 80 i operating at "ahigh'er peripheral speed than 'said rolls, said means. being adjustable toV engagev the web at selected positions Ytransversely thereof, and adapted totension'the por-tion of the web engaged, therebygstraight'- ,85

plurality of driven rolls ,aplurality of pivoted arms, weft's'traigfhtening rollers sup- 90 "ported by said arms, and'means for driving f's'ald weft'l straightening rollersat a periphveral speed g higherY than" that; of said l driven rolls."" u 4 6."In a'weftl straightening apparatus, the 95 c'ombinatin:of.a web support vcomprising a shaft, a plurality of web supporting-,rolls 'loosely-mounted'on said shaft, one waydriving connections between'said shafty and rolls,

and, vmeans coperating with saidrolls to 100 accelerate. portionsfo'f the' web as it passes i "Sa-1d T0118;thereby'Straightening the weft L 7;; in a' sea araigtiaiigiappaaus,,the

combination of a web support comprising a plurality of *webY supporting rolls, drivin means actuated independentlyithereof an therefor'. and* means cooperating therewith 'Qt'o accelerate portions of the web as'it passes saidv "rollsfthereby Vstraighteningv the weft threads. f

8., In' awe ft straightening apparatus, Athe combination of a web support 'comprising a shaft, a" plurality Y of web Ysu'pportingnrolls loosely supported on said' shaft, ratchets se- 115 jcured' to said shaft, pawls on said rolls iengaging .said ratchets, and means cooperating wlth said rolls to accelerate portions'of the eningthe Vweftj threads.

9. In a weftstraightening apparatus, lthe "combination of aweb support lcomprisingma driven, shaft, na pluralityoffweb supporting rolls loosely supported onA said shaft, pawl and ratchet mechanism providinga oneway 'driving connection 'between saidshaft and web' supporting rolls, aplurality-'ofpivoted arms, an'd'means carried thereby for engagement with theA web and adapted to accelerate P Qriensof" 'the we@ asitzrasises, Said web 130 Supporting rolls, thereby straightening the weft threads.

l0. In a weft straightening apparatus, the combina-tion of a web support comprising a driven shaft, a plurality of web supporting rolls loosely supported on said shaft, a one Way driving connection between said shaft and web supporting rolls, a plurality of pivoted arms, a weft straightening roller earried by each of said arms, and means for 10 rollers are accelerated and the weft threads 15 are straightened.

CHARLES A. DORAN.

Copies of this patent may be obtained Vfor five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

Images