US1721783A - Cotton-drawing frame with balling head - Google Patents

Description

July 23, 1929. A E, KOCH 1,721,783

COTTON DRAWING FRAME WITH BALLING HEAD Filed June 28, 1928 lill Cil

Patented July 23, 1929.

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ERNST KOCH, OF DRESDEN, GERMANY, ASSIGNGR TO SCHSSCI-IE MASCHINENFABR-IK VOR-Mi. RICH. HARTMANN, AKTENGESELLSCHAFT, 0F CHEMNITZ AND DRESDEN,

GERMANY.

COTTON-DRAWING FRAME WITH BALLING HEAD.

Application filed June 2S, 1928, Serial No. 288,975, and in Germany July 6, 1927.

Commonly in preparing cotton for spinning the sliver produced by the cotton drawing frame is delivered into cans (coilers). lVhen passing the slivers on to the succeeding process for further treatment this feeding-on performance by means of cans is less convenient and would be apparently more facilitated when the slivers are in the form of bobbins.

In the succeeding operations of the French system of worsted drawing the attenuated and loosened slivers issuing from the drawing rollers are restrengthened by imparting to the same a false twist by means of revolving funnel twister heads or rub aprons having both a rotary and reciprocating lateral movement;

and after having been subjected to this process the slivers are made into bobbins of suitable form for further preparation and to obtain better facilities for creeling them on the succeeding machines.

There are, however, also some special machines in the worsted drawing department7 for which the feeding from cans is still in use, but bobbins are more and more succeeding in replacing the same.

It is to be foreseen that the substitution of the can delivery by means of the delivery in bobbin formation will also meet the requirements of the progressing development of the cotton spinning process with a view to simplifying the working operations and securing better results in strengthening the slivers of cotton drawing frames by appropriate means of conipacting and condensing.

This foreseeing contemplation is principally based on the increasing application and evolution of high drafting mechanism in cotton spinning, and conscientious studies on this basic principle resulted in the discovery of an important improvement of the cotton drawing frame of which a description will be given below.

According to the invention it is proposed to provide this machine firstly, at least, the last passage of the drawing frame at the outlet with rub apron condensers in connection with a succeeding balling head for winding the slivers on bobbins.

The combination of sliver condensing and compacting means which for instance may take the form of rub aprons with a balling head for making the strengthened slivers into bobbins after they are delivered from the drawing mechanism of the cotton drawing frame, as v'ell as the substitution of the cans by bobbins are entirely novel features in the process of cotton spinning, which present ample scope for its advantageous and successful simplification, as has been already confirmed by practical experiments and tests.

This new method of strengthening the cotton slivers after the drawing operation by imparting to them a false twist is in contradistinction to the hitherto used process of the so-called three roller system of cotton spinninga in which the strengthening of the slivers or rovings is exclusively obtained by proper twisting through flyer frames. The present improvement, therefore, is particularly intended to provide for a future and entire suppression of the cotton fly frames.

The said improvement may be more fully understood and appreciated from the accompanying drawing, which diagrammatically illustrates, by way of example, the attachment of a lap making arrangement or balling head in direct succession to thel drawing device of a cotton drawing frame; the design of this balling head being similar in itself to such as is already known from the porcupine drawing boxes of the worsted spinning process.

As will be seen from this illustration the sliver is lifted out from the can a of the proceeding drawing process over the sliver guide bar Y) and passed through the pair of feed rollers c and cl. Then issuing from the latter it is slightly supported by a sliver guide e on its further way to a roller drafting device consisting forinstance of 4 pairs of drawing rollers f, g, h, t', wherefrom the slivers are delivered in the form of a broad thin fleece. This fleecey after leavingy the front pair of drawing rollers z' is compacted into a narrow ribbon by means of a wedge shaped conductor 7c and presented in this condition to a condensing device constituted by a unit of two endless upper and lower rub aprons a and 'm having a continuous longitudinal and a reciprocating lateral motion by which the sliver, when passing between the same, is rounded and condensed. The thus strengthened sliver is then passed through a funnel `guide 0 onto a lap winding apparatus or balling head with the balling roller p to which besides its rotary movement a continuous traverse motion is imparted for the purpose of producing a cross wound bobbin g ,suitable for being placed in the creel of the next process.

Having now particularly described and ascertained the nature of the present invention and in what manner the saine is carried into effect, I declare that what I claim is l. A cotton drawing fraine comprising a series of drawing rollers, a rnb apron device for condensing the sliver and arranged to operate on the sliver after the drawing rollers, and a balling head having an axial trav erse motion vfor winding the sliver into cross wound bobbins.

2. A cotton drawing` frame comprising a series of drawing rollers, a rub apron device arranged to operate on the sliver after the drawing rollers, a hailing head having an axial traverse motion, and a funnel guide arranged between the said rub apron and the Said balling head.

In testimony whereof I have signed my name to this specitication.

ERNST KOCH.

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