US1854690A - Mechanism for joining and drawing textile tapes or slivers - Google Patents

Description

April 1932- F. cAsAB ANcAs 1,854,690

MECHANISM FOR JOINING AND DRAWING TEXTILE TAPES OR SLIVERS 2 Sheets-Sheet 1 Filed Aug. 12, 1930 April 19, 1932.

F. CASABLANCAS MECHANISM FOR JOINING AND DRAWING TEXTILE TAPES OR SLIVERS 2 Sheets-Sheet 2 Filed Aug. 12, 1930 is of great importance for the perfection of Patented Apr. 1 9, 1932 N ED STATES PATENT oFF-I cE' -mnmocasumcas, or manna, arm

iron. some Arm nnawme rnxmr: warns on. same Application filed August 18, 1980, Serial 10.174343, and in Spain Augult 28, 1989.

The invention consists of reducers or funnels of special form mounted in front of the first pair of retaining cylinders of the mechanisms for drawing textile fibres in those cases ii in which two or more slivers or tapes of fibres are united or joined to form. one single whole only upon issuing from the drawing mechanism. r

It is a plicable, therefore, principally to dra rames for cotton, in which 6, 7 or 8 tapes 0 fibres or slivers are combined to form one only, but also it can be applied with advantage to slubbin frames when they are provided with a high draft mechanism, m which case it permits of feeding the slubbmg frame with two or more drawing frame slivers instead of one only as has been hither- 7' to efiected, there being obtained with this union a'high degree of regularity ofthe m sliver obtained in the slubbing frame.

' Every stem of drawin ;based upon the reunion o various tapes 0 fibres or slivers resents the characteristic feature that the awin is effected in a relatively large width with re ation to the horizontal plane of the drawing,that is to say, the cylinders must work having the fibrous mass interposed .at a

eat len h from its generatrix. Under t ese con 'tions it will be understood that it the work that the fibres should distributed over the whole width resembling altogether a sheet of fibres of uniform thickness.

- This not achieved with the systems of sliver-guides or introducers hitherto known because the slivers are not delivered exactly parallel and at equal distances, the result bemg that they take up an irregular position during the process of drawing and as the pressure of the operating cylinders is not dise uniforml tributed equally over its width the drawing is unequal and the rolling imperfect as can be appreciated by exam ning the sheet of fibres issuing from the drawing mechanism.

With the improvement forming the sub- 'ect matter of this invention it is possible to introduce slivers or tapes completely parallel and at ual distances and furthermore on account 0 a prior slight compression of the pressure to which they are subjected, and the unequal distribution of the fibres can no more be corrected vreciprocating movement parallel to the cylonly obtained y compressing the card slivers or tapes which are very unequal in size, so that b this compression the space through w 'ch a thinner sliver passes is filled partly withthe fibres bf the adjacent somewhat thicker slivers which become displaced laterally due to the effect of the pressure of the walls of the funnel or introducer.

This displacement is to be efi'ected before the fibres are seized by thefirst pair of cylinders of the drawing system because when once seized by these cylinders'the are not at liberty to become displaced by t e effect of during the whole drawing process. y

In the accompanying drawin there are given examples of funnels for j oming textile slivers according to the invention. v

Figure 1 represents a type of funnel for drawmg frame for eight tapes or slivers seen in longitudinal vertical section.

Figure 2 shows the same funnel as in-Figy ure 1 seen from behind and in elevation.

Figure 3 represents the same funnel as in Figures 1 and 2 in plan.

' igure 4 is an elevation of a funnel of the same system for two tapes or slivers suitable for a slubbing frame. I

Figure 5 is an elevation and rear view of the same funnel as in Figure 4.

Figure 6 represents the same funnel as in Figures 4: and 5 in plan.

n the Figures 1 to 3' there may be seen the manner of mounting this funnel in the drawing mechanism of a. drawing frame, 1 being the funnel, 2 a support of the same in the form of an angle or corner, 3 a bar having a inders which is generally used in drawing mechanisms for guiding the'slivers and 'ving them a movement parallel to the cy 'nders. Finally 5 and 6'are the upper and 199 lower rear cylinders respectively of the drawin system. The lower face of the funnel is at and carries lateral lugs 11 (Flgures 2 and 3) which have enlarged holes 12 so as to give passage to the screws 4 which hold the funnel 1 upon the support 2. This arrangement permits of the adjustment of the distance of the funnel in relation to the cylinders 5 and 6. In its turn the support 31s fixed to the bar 3 by means of screws which are not shown.

In its inner part this funnel has a series of ribs not only in the upper face but also m the lower face which form ducts for guiding the slivers or tapes of fibre. The lower face of the funnel has the ribs 13 of relatively great height and the upper face has the ribs 14 of lesser height and which correspond to the ribs 13. The number of these ribs is that of the slivers which have to pass through the funnel less one so that there are formed as many ducts 16 17 as slivers or tapes have to pass through the funnel. The ribs 13, 14' do not touch each otherso that there always remains between them a certain space and furthermore in the final part 15 of the funnel where the slivers or tapes of fibre are delivered to the cylinders 5, 6 of the drawing,

mechanism the ribs disappear completely and the section of the funnel becomes narrower considerably, the result of which is that at this point of the funnel a light lateral compression is given to the slivers or tapes of fibre for the purpose of equalizing these slivers or tapes by the lateral co-penetration of the one with the other and deliver all the fibres to the drawing mechanism thus forming a sheet or plate of fibres of uniform thickness. 1

' The arrangement of the artitions 13, 14, which cannot touch each ot er, considerably facilitates the passage or threading of the slivers or tapes of fibre, when one of the slivers breaks, the end of the broken sliver is caused to pass, without interrupting the functioning of the machine, attached to one of the cont1 uous slivers which is not broken, and when t is broken end has finally passed out through the end of the funnel the sliver is made to spring to the duct or canal which corresponds to it, whereupon it is deflected by hand to the part corresponding to the entrance of the funnel so that it may pass through the corresponding groove.

In order to obtain a better adaptation of the slivers or tapes to the grooves or ducts, the funnel can be mounted in a slightly raised manner at the entrance portion and inclined towardsthe cylinders of the drawing mechamsm.

In Figures 4 and 6 there is shown a funnel especially arranged for.working two slivers or tapes of fibres in the slubbing frame. This funnel does not differ. substantially from that shown in Figures 1 and 3 and has een shown as round but could also be made I flattened, elliptic or of any other suitable sha he material of which these funnels are constructed may be of any kind provided the surface is of suflicient smoothness so as to facilitate the slipping alon of the fibres. They may thus be constructe of porcelain,

metal, hard fibre or any other suitable material.

I claim 1. A mechanism for doubling and drawing textile slivers, comprising a closed funnel-shaped guide for oining and condensing the slivers passing therethrough; said guide having therein upper and lower ribs disposed in register and projectin from the res ective upper and lower faces 0 the guide an with them outer edges in spaced apart relation to provide inter-communicatin cross channels allowing the slivers to tone one another throughout the whole length of the guide.

2. A mechanism for doubling and drawing textile slivers, comprising a closed funnel, ribs projecting from the inside upper and lower faces of the funnel, the upper ribs being opposite the lower ones and spaced therefrom for allowing slivers passing through the funnel to touch one another throughout the entire length of the guiding device.

3. A device for joining and condensing shvers, comprising a flat broad hollow body tapering in height and width from end to end for receiving a plurality of slivers therethrough, said body having therein a plurality of registering ribs projecting from the upper and lower walls of the body to provide longitudinal channels throughout the body, said ribs being spaced apart at their free edges to provide transverse openings across the entire interior of the body to admit contact and co-mingling of the slivers with one another during their longitudinal pasadjacent edges spaced apart to provide cross channels between the upper and lower ribs and throughwhich the slivers may extend for contact and co-mingling with one another during compression and throughout their passage through the body, said bod having at its reduced end laterally exten 'ng lugs adapted to engage said support and provided with longitudinal slots arranged in the general direction of the axis and the body for receiving said cylinders. I

In testimony whereof I have signed my name to this s cification.

FER ANDO CASABLANCAS.

clamping bolts orthe like to adjustably support the body with respect to v

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