US1758428A - Card - Google Patents

Description

May 13, 1930. R. G. CAMPBELL CARD Filed Sept. 4, 1926 Patented May 13, 1930 ynoiaiain'r G. CAMPBELL, oF NEWYORK MILLS, NEwYonx CARD Application filed September 4,1926,` Serial 110.133,711.

y which shally effectively take the so-called lap from the lap-roll and start the cotton, or

other material, on its course through the card,

but shall do so with less injury to the material than the feeding apparatus now generally used.

The above and other objects of the invention are accomplished by the method and apparatus described in the following specification and illustrated in the accompanying drawings forming a part of this disclosure.

In these drawings Fig. 1 is a semi-diagrammatic illustration showing, in transverse section, the arrangement and construction of the introductory feeding mechanism of one form of my invention; and Fig. 2 is a similar illustration showing another form of the invention, being a practical modication. a

In the usual card employed in the cotton industry, a lap is drawn from the roll, mounted at the front end of the card, and-is directed across a horizontal feed-plate. At the inner end of this feed-plate, the lap passes under a fluted gripper and feeding roll. The lap is then directed upwardly over a lip, beyond the upper edge of which it is presented to a lickerin. The lickerin and feed-roll revolve so that their peripheries move in opposite directions relatively and the peripheral speed of the liclrerin is greater than that of the feed-roll. Thus, the teeth of the lickerin continuously pull batches of liber f rom the lap extendingover the feed-plate-llp. The fibers picked up by the liclgerin are later transferred to a large carding roll.

In cotton spinning, the primary function of the carding operation is the drawing of the cotton-ber mass; the secondary function is the preliminary paralleling of the fibers.

In order that the lickerin may act to initiate the paralleling of the fiber and, likewise, that it may draw from the lap relatively minute quantities of thefiber, it is necessary that the fibers be firmly gripped at their outer ends. Many fibers inthe cotton mass are veryshort; and, in order to afford a grip on these,Y it is necessary that the gripping pointbeilocated as closely as possible tothe lickerin. Hence, it is the practice, in constructing cards for use in cotton spinning, to operate the feed-roll in association with the sharp-edged, abrupt-faced lip.

The use of this type of lip, while advan@ tageous in treating cotton, is objectionable when short-length rayon-fibers are treated.

`Cotton-fibers are relatively strong and can withstand considerable abuse; but rayon filaments are relatively tender. Hence, while cottonV endures the severereverse bending when pulled over the edge of the lip, rayonfilaments tend to break and score when drawn over the lip; the result being a loss ofL strength and luster in the ultimate yarn.

Hence, the present invention seeks to provide means whereby the usual cotton-card may be adapted to the treatment of rayon.

In both forms or embodiments ofmy in- STATES/PATENT `oFFicli vention, the abrupt, sharp-edged lip, is elimit' nate'd. Theresultfs are two in number: First, the gripping action of the feed-roll and plate is lessened, and the fibers may, therefore, be

more easily withdrawn from the lap by the lickerin; and, secondly, the severe bending? of the fibers over the sharp edge of the lip l is eliminated and the fibers are drawn off in a gentle arc.

In the formof the invention shown in'F ig. 1, the feed-plate 12a is accompanied by the feed and gripping roll 13 (as in the ordinary card) and the innerend of the plate is chamfered to correspond with the curvature of the lickerin, the upper edge or surface being slightly rounded, as indicated at 17.

In the formr of the invention shown in 2, the gripping and feed roll 18 cooperates, Y

no-t with the feed-plate 19, but with a'fioating pressure-bar 20, the roll 18 being mounted underneathin fixed bearings (not shown), and the bar uppermost and in a manner permitting it to freely and constantlyadjust itself in a vertical direction.- 'Ihe vertical movement of the bar may be afforded through spring or Weight (not shown) arranged to press the bar toward the roll, or through the mere action of gravity v What I claim is: v Apparatus for treating rayon, including a feed-plate over Which theV hrous mass travelsnlfa: Singlelhorizo'ntalplane, a feed- `roll juxtaposed tof'one edge of' thefplate for Vdrawing the yarn thereover, and a---lickerin, l@ the axis of the.y lokerinbeng located in: va

plane substantiallyabofe'that of the'feedplate, also .juxtaposed to the edge of them plate and eoacting With the feed-roll, Whereby the fibrous mass passes betweenstheredge of the plate and the peripherynof the lickerin p `Without Lsulostantial elevation-above *its'plane fof-f travel ovrtheplate; arid Whieh by'reason "ofthe Ipoe'tionofthef'feed plate substantially below the -aXis Vcffthe lickern is picked -up 20121351 thel lower periphery ofi bhe lekerin :Without euhjeetingbheifbers 1 tof' any substantial 'bending `against the edge off the feed-plate.

InltestiinonyfwhereofiI aixrny Signature.

' RG'BE'RT G# CMPBEEL.

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