US2223589A - Drawing frame for treating vegetable, animal, or artificial fibers of varying lengths - Google Patents

Description

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DRAWING FRAME FOR TREAT'ING VEGE- OB, ARTIFICIAL FIBEBS F VARYING LENGTHS Jan Weinberger, Brunn, Czechoslovakia, assignor of twenty-live per cent to St. George Textile -Corporatiom New York, N. Y., a corporation of New York Application Maren 2, 193s, serial Nc. 193,588

s claims. (ci. 1s-141 This invention relates to certain new and useful improvements in drawing frames for treating vegetable, Aanimal or artiflcial'bers of varying 5 lengths and is a combinationof the general type disclosed in application for patent filed by Jan Weinberger on October A25, 1937, Serial No.

f 170,911, for improvements'inDrawing frames for vtreating vegetable, animal or artificial fibers of varying lengths, and embodies improvements in the art thereover.

The primary object of this invention is to utilize a cotton drawing frame that is designed for the handling of bers with relatively short staple by slightly modifying the construction of said cotton drawing frame-by thec removal therefrom of one or more rollers preceding the front, or delivery draft rollers and substituting for such removed roller or rollers a cylinder formed of fibers of much greater lengths than normal cotton. staple may be treated by said frame.

A further object of the invention .is to utilize a cotton drawing frame normally comprising four pairs of rollers for the drawing of fibers of varying staple length, such as short and long fibers'- v found in wool, by substituting for the second top -roller preceding the front or delivery draft roller a ring roller construction which provides between the third roller and the front roller a comparatively long stretching or slide field with the long fibers controlled in their passage through said slide field by the front rollers, while the passage of the short fibers through the slide field is conf trolled and directed -toward the front rollers by the ring roller.

A further object of the invention is to-utilize acotton'drawlng frame of standard construction for the treatment of mixed or long staple flbers by substituting a roller formed of freely mounted edge-abutting rings for the second roller preceding the front or delivery draft rollers of the cot- 'ton drawing frame, an even application of pressure being exerted on the sliver by themovement of rings riding on the sliver, the peripheral speed 45 of rotation of which is controlled by the speed of movement of the sliver tlierebeneath, the several rings of the cylinder engaged with the sliver imparting an even pressure over the. entire-surface of the sliver engaged by said rings, the long 50 fibers moving between thethird an'd front rollers independently of the ring roller, the latter acting to control and direct'the feeding of the shorter. bers to the front rollers.

A still furtherobject o f -the invention is to `545 provide a ring roller of the foregoing character` as a substitute for the second roller of a standard cotton drawing frame to accomplish the foregoing objects, with the rings of said roller diagonally cutfrom a cylinder whereby a sliver moving in -c'ontaotwithcertain onesof saidringsm'aybe edge-abutting freely mounted rings whereby A shifted longitudinally of the ring roller by its reciprocating bar with the rings disposed laterally of the side edges of the sliver presenting an inclined side face to the adjacent'edge of the sliver I so that such rings having their 'lower sides in planes below the upper surface of the sliver may easily rise to permit the movement of the sliver longitudinally of the ring cylinder.

With the above and other Objects in View that will become apparent as the nature of the invention is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown Figure 4` is an enlarged fragmentary elevational view of the substituted ring roller and its associated lower roller with a sliver having an even pressure placed thereon by several of thev rings of the ring roller. A

Referring more in detail to the accompanying drawing and particularlyto Figure 1 there is illustrated a standard cotton drawing frame designed for the handling of short fiber staple and comprising a pair of front rollers I0 and II coll.-` stituting the delivery draft rollers of the frame, a third pair of pressing rollers I2 and I3fand a pair of entry rollers Il and I5, the pressing rollers I2I3 and-the entry rollers I4-I5 rotating at the same peripheral speed. The top rollers Ill, I2 and I4 are weighted as at I6 for proper ensagement -with a sliver passing between the top and bottom rollers of the several pairs mentioned. 1 y,

The top roller of the second rollerpair preceding the front top roller I0 is removed and a ring roller designated in general by the reference character I1 is substituted therefor, the ring rollerl cooperating with the standard steel roller I8 ofthe second roller pair. By eliminating the top roller of the second roller pair and substituting therefor a freely mounted ring roller, there is provided a slide eld I9 between the lpressing rollers I2-I3 and the front rollers Ill-II for long bers` while the short fibers passing through said 'slide field I 9 kare controlled -intheir movements and directedtoward the front draft rollers I0-II by theringroller I'|.

'Ihe ring roller l1 is shown more in detail in Figures 2 to 4 removed from the cotton drawing frame and includes an axle 20 having an annularly-enlarged portion 2 I intermediate the ends thereof to form end abutment shoulders 22 against which one side of a cylindrical bearing 23 freely mounted on the end ofthe axle 2U abuts, the cylindrical bearing 23 being retained on each axle and by a collar 24 secured to each axle end and abuttingly engaging the adjacent side of the cylindrical bearing 23. The axle ends outwardly of the intermediate enlarged portion 2| thereof are freely rotatable in the cylindricall been found preferable to cut them at an angle'at approximately 15. As shown in Figure 3, the 25 rings 26 are of an internal diameter much greater than the diameter of the intermediate portion 2| of the axle 20 so that said rings when engaged With a sliver passing under groups of said rings may' freely move relatively to each other with those rings of a group engaged with a sliver bearing by their own Weight on the sliver to impart an even pressure to the entire upper surface area of the sliver. By cutting the rings 26 at an angle extending across the axle 20, the side edges of the sliver are presented to` an inclined side edge of -a ring positioned laterally of the sliver with the result that when a sliver is moved by its reciprocating bar longitudinally of the ring roller a minimum of resistance is offered to the sliver in such movement, the ring riding upwardly out of the path of movement of the sliver for subsequent resting thereon.

As shown in Figure 4, the sliver S is of a cross sectional area and width to be engaged by three rings 263L which effects a slight elevation of said rings while the laterally disposed rings 26b have dropped downwardly by their own Weight for riding on the normal steel cylinder I8 of the cotton drawing frame. It will Vbe understoodA that the free mounting of the axle 20 and the free mounting of the rings 26 eliminates a positive drive from the steel cylinder I8 to said rings 26, the latter being rotated independently of each other by their contacts with the steel cylinder I8 and the sliver S. The rings 26a engaged with the sliver S as 4shown in Figure 4 permit the long fibers to slide through the slide field I9 to the front rollers I0 and and at the same time control the movements of the short fibers through said slide eld and Vdirect their movements to the front rollers Ill and Il` for the\ production of a smooth and even sliver free of internal stretchf ing. The diagonal formation of the rings 26 presents an inclined surface of a lowered ring 26 65 to the adjacentside edge of the sliver so that the sliver may freely move longitudinally of the ring roller under influence of its reciprocating bar. It

is of course understood that the illustration inv Figure 4 is considerably enlarged and'that a very small abutting area of a lowered ring is presented to a side edgeof a sliver.

It will also be understood that only those rings 'entire upper surface area or sliver. fore essential that the cylinder be formed of freely mounted rings so that only certain ones of the groups of rings are evenly engaged with of the group engaged with a sliver exert pressure on said sliver by their own weight. .'Should an uninterrupted cylinder be employed in a slide eld as disclosed herein, one end of the cylinder would be lowered while the other end of the cylinder was engaged with a sliver whichwould resuit in increased pressure of a cylinder on one side of the "sliver and' uneven pressure over? the the sliver andI by their own Weight impart an even pressure 'to the sliver.

-While there is herein shown and described the preferred "embbdimentw of the invention, it is nevertheless`t be understood that minor changes maybe made therein without departing from the.

spirit and scope of the invention as claimed.

I claim: N 1. In cotton spinning machinery'for Working 'on fibers of varying lengths with the long fibers ofv muchfgreaterI length thar standard cotton `fibers, said machinery including a cotton draw- It is there- 2. In cotton spinning machinery for working' on fibers of varying lengths With the long fibers of much greater length than standard cotton fibers, said machinery including a cotton drawing frame having a ring roller substituted for the top rolle-r of the pair of rollers preceding the front rollers of the frame to form a slide field for long fibers between thepressing rollers and front roller and acting to control and. feed the shorter fibers through said eld to the front rollers, said ring roller being formed of freely mounted edge abutting rings individually movable in paths at yacute angles diametrically ofthe ring roller without changing the overall length of the ring roller whereby those rings under which a vsliver passes impart an even pressure to the entire upper surface area of the sliver.

3. In cotton Ispinning machinery for working on bers of varying lengths with the long fibers of much greater length than standard cotton` fibers, said machinery-including a cotton `drawing frame having a ring roller substituted for the top roller of the pair of rollers preceding the front rollers of the frame to form a slide field

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