US1827385A - Schatt - Google Patents

Description

Oct. 13, 1931. p CORNIBERT 1,827,385

PULL-THROUGH DRAWING FRAME FOR MEDIUM AND LONG FIBROUS MATERIAL,

MORE PARTICULARLY COMBED wooL, ARTIFICIAL SILK RAMIE Filed March 25, 1930 preliminary 'draugh Patented Oct 13, 1931 UNITED STATES PEBBE GORRIBEET, OF

PATENT o g r rum, ITALY, assrenon} BY nEsNE 'assiemrnnrs, 'ro

s1. cmmnr'rannrx 'vonn. men. Henri/IAN, nxzrrnuensnrnsonar-r, or enem A. JOINT-STOCK comranr or GERMANY PULL-THROUGH nmwme rams FOB. MEDIUM AND LONG Fnnions MATERIAL, norm rnnrrcunmr, connnn WOOL, nnrrrrcmn SILK, RAMIE Application. mm inch 25, 1930, Serial No. 438,797, and in GermanyApril 5, i929.

- The present invention relates to a pull through drawing framefor fibrousmaterial of medium and considerable length, more particularly combed wool, s'chappe, artificial silk, ramie, of the type wherein the-sliver or ribbonlis conveyed between the pair of feed rollers and the pair of delivery or drawing.

rollers by an endless conveyer band running overlower driven intermediate rollers.

Drawing frames having endless conveyer bands are known in which the conveyer band I is arranged between the feed rollersand the delivery or drawing rollers and run' over drivenlower intermediate rollers. These known drawing frames are not suitable for drawing'medium and long staple. .Inone known construction, a pressure top roller is arranged above the conveyer band whereby a t is produced by the 'cooperation of the endless belt and pressure top roller on the one hand and the feed rollers on the other hand. limits the len h of the staple which can be efiectively t In another construction, the conveyer band.

merely serves the purpose of carrying the fibrous material from the rear pair of rollers to thefront pair of rollers without retaining the floating fibres, and consequently. an even drawing action is unattainable.

According to the invention, there is arranged between the lower-. intermediate driven rollers which serve for guiding the conveyer band, at least one additional lower guide roller for the conveyer band,.twonongripping top rollers "comperating with the additional intermediate lower roller. By this arrangement a very eflicient guiding of medium and long fibres is attained and a very efiicient slip-through and retarding passage is produced; The sliver or' ribbon. to be drawn is compelled to follow the curved path formed by the employment of the two intermediate top rollers and the intermediate lower roller, which results in an excellent'guiding of the floating fibres, asl anyaccidental gisgilacement of fibres is entirely avoidaccompanying drawing shdws by way 36 st am e a combustion embedying the pair of drawing rollers; a conveyer band artures of the invention in diagrammatic elevarollers d and f is provided an additional lower intermediate roller e|for guiding the conveyer band; Opposite ,the roller 6 are arranged two upper non-gripping rollers g, g in such a manner as to format this point a curved or arc-shaped path, by which a very efi'ective retardation oi floating fibres. is. at: tained. J I 1 '-All the top rollers 6 0 (P, f, g, g are guided by means of their pivot pins in grooves of bearing blocksh which are adjustable upon rods '5 and may be fixed in the adjusted positions by means of set screws. The bear-. ing blocks of the lower rollers b 1''? and e are adjustably and fixably mounted in a simer 0 of the pair of drawing or delivery roll-.

"ers is in usual manner loadedby means of a 1. A pull through drawing frame for drawing-medium and long staple, comprising in combination a pairof feed rollers; a:

ranged between the said pair of feed rollers. and .said pair of drawing rollers; intermediate driven lower rollers for guiding and v driving the said conveyer band; non-grip ping toprollers co-operating with said intermediate lower rollers; -anadditional lower roller'arranged between the said intermediate lower rollers forguiding said conveyer band p and two non-grlpping top rollers arranged pp t y .011 both sides of the said additional 1 7 ilar manner in the frame a. The upper rolllower roller and co-operating with the additional intermediate roller and the conveyer hand in forming a curved ath for the conve er band and the materlal to be'drawn,

'su stantially as described.

2. A pullthrough drawin frame for drawing medium and long stap e comprising in combination: aopair of feed rollers; a pair of drawing rollers; a conveyer band arranged between said pair of feed rollers and said pair of drawing rollers for guiding and conveying the material to be drawn; inter mediate rollers for supporting the said conveyer band at the ends; an additional lower roller arranged between the said .intermediate rollers for guiding the said conveyer band; and two non-gripping top rollers arranfed oppositely and on both sides of the sai additional lower roller, said three last mentioned rollers being so arranged as to guide the'conveyer band and the material to e drawn in a curved path, substantially as described. 4

3. A .pull through drawing frame for drawing medium and long staple, comprising in combination: a pair of feed rollers; a pair of drawing rollers; a conveyer band arranged betweeu'said pair of feed rollers andsaid pair of drawing rollers; intermediate driven lower rollers for guiding and driving said conveyer jband; non-gri ping top rollers co-operating with said in ermediate lowerrollers and three additional rollers arranged between the front and rear ends of the conveying portion of the conveyer band in such ,a manner as to guide the said conveyer band and the material to be drawn in a curved path around a portion of one of these three rollers, substantially as described.

sai

4. A pull through drawing frame for drawing medium and long staple, comprising in combination: a pair of feed rollers; a.

pair of drawing rollers; a conve 'er band ar ran ed between said pair of fee rollers and pair of drawing rollers; intermediate driven lower rollers for guiding and driving nee-nest the said conveyor band; non-gripping top rollers 'co-operating with said intermediate said convcyer band; non-gripping topirollers co-operating with said intermediate lower rollers; an additional lower roller arrangedbetween the said intermediate lower rollers for guiding the said eonveyer band; and two non-gripping 'top' rollers arranged opipositely and. onfboth sides of the said a tional lower roller in such a manner as to hold the whole portion of the conveyer band passing between the said two non-gripping top rollers in contact with the said additional lower roller, substantially as described.

5. A pull-through drawing frame for drawing medium and long; staple, compris ing in combination :7 a. pair. of feed rollers; a pair of drawing rollers; a conveyor band arranged between said pair of feed rollers and said pair of drawin driven lower rollers or guiding and driving rollers; intermediate

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