US2279797A - Drawing apparatus for flyer frames - Google Patents

Description

' April 14, 1942. c, SCHIESYSER 2,279,797

DRAWING APPARATUS FOR FLYER FRAMES Filed June 14, 1940 v If Z 17 J1 Patented Apr. 14, 1942 1379,797 DRAWINGAPPARATUS FonrLYEa: FaAMEs- Caspar S cliiesser, Ennenda, Canton Glarus, 1

Switzerland,

Application June 14, 1940, Serial No. 340,554 In Switzerland June 17, 1939 3 Claims.

In the hitherto known drawing apparatus for flyer frames the top clearer roller is, in con sequence of the varying speeds of the top roller, subjected to irregular or accidental movements so that the fly waste is not evenly taken up by the clearer roller. Through this irregular or accidental movement beads or thick places in the fly waste are formed on the clearer roller. During operation these beads frequently fall from the clearer roller and are taken along by the travelling roving, and in this way they app-ear in the thread and impair its quality.

The object of the invention is to overcome this disadvantage, and the invention consists essentially in the provision of a drawing apparatus for fiyer frames wherein a clearer roller rests upon a pair of rollers co-operating with a middle fluted roller and is arranged between a pressure roller and another roller so that the said clearer roller receives an even steady rotary motion from the pair of rollers on which it rests and simultaneously cleans all the four upper rollers with which it is in contact.

One embodiment of the invention is illustrated by way of example in the accompanying drawing in which Fig. 1 is a diagrammatic view, partly in section, of a drawing apparatus according to the invention, and

Fig. 2 is a plan view of said apparatus, some parts being omitted for the sake of clarity. v

The drawing apparatus comprises fluted draw rollers I, 2 and 3 which are mounted in known manner in the machine frame. 4 co-operates with the front roller I, while both the rollers 2 and 3 are subjected to the action of a clearer roller 5 which is pressed against the rollers 2 and 3 by a resilient curved member 6. Co-operating with the middle fluted roller 2 is a leather-covered roller 8 and also an iron roller 1 having a smooth surface and urged by its own weight against the roller 2, the said roller 1 serving as a passage roller. The journal 9 of the roller 8 is mounted in the bearing I0 (Fig. 2) of a rocking lever H which comprises a fork l2 resting on the journal [3 of the roller M which co-operates with the roller l. The lever I l is also provided with a handle I5.

, The fluted roller 3 is acted upon by an iron pressure roller it while the rollers 8 and M as A clearer roller well as the rollers l and I6 are acted on by a common clearer roller I1, i. e., all the four rollers arranged above the fluted rollers are cleaned by the clearer roller H. v

The lever H, as seen in Fig. 1, is provided with pins l8 supporting one end of a hooked member IQ of which the other end is subjected to the pull of a weight 23. The pins l8 are arranged in such a wayv that the weight 20 acts on both rollers 8 and I4 so that these are pressed against their corresponding fluted draw rollers.

As seen from the drawing the iron roller 1 and the roller 8 are arranged close together and since the nipping line between the rollers 2 and 8 is suificiently large good guiding of the fibres is obtained. The nipping distance between the rollers l and M and the rollers 2 and 8 amounts at most to 36 mm. whereas the drawing distance amounts to about 24 mm.

By means of the above-described arrangement not only is a good guiding of the fibres obtained but also the further advantage that once the pressure rollers 1 and I6 are adjusted, this adjustment can be maintained for varying staple lengths. This means a considerable saving in time since staples varying in length for example from 28 to 32 mm. can be Worked without th necessity for readjustment of the rollers.

The elimination of the hitherto common saddle loading and of the loading hook between the rollers 2 and 3 renders possible the described arrangement of the clearer roller 5 to co-operate with the rollers 2 and 3. The arrangement of the clearer roller 5 enables it to thoroughly clean said rollers2 and 3 which is of considerable importance for the quality of the yarn.

As may be seen from Fig. 1 the roller l1 rests on the two rollers I and 8 and is rotated evenly and steadily by them since they are driven with equal speeds bythe draw roller 2. The clearer roller [1 is arranged as in a cage between the roller I4 and the pressure roller l6, and by its motion it cleans not only the two rollers 1 and 8, but it also takes up the fly from the roller l 4 and the pressure roller l6, and in consequence of the steady rotational velocity of theclearer roller I1 the fly waste is wound evenly upon the clearer roller. This results in the prevention of the formation of thick places in the fly waste, no impurities fall into the yarn or roving and so the quality of the thread is improved, and a further advantage achieved is that the clearer roller requires cleaning less oftenthan in the hitherto known constructions.

By means of the handle IS the lever l I can be turned over to render the rollers i and 8 easil accessible.

The advantages of the apparatus according to the invention described above are that by means of the rollers 1 and 8 arranged on the middle fluted draw roller an advantageous nipping distance and a good guiding of the fibres is obtained, and these rollers simultaneously serve as a support for the clearer roller I1 and the latter receives a steady motion so that thick places in the fly waste are avoided and the fiy waste is wound evenly upon the clearer roller, contamination of the roving prevented and the clearer roller needs only to be removed for cleaningat greater intervals of time;

I claim:

1. In flyer frames a top or driven roller train" comprising a rear roller, a; pair ofintermediate rollers of substantially'equal diameters, a front roller, and a clearer roller freely resting on the? p the saidrear said pair of rollers and engaging and front rollers.

of staple in the frame.

2. In fiyer frames a top or driven roller train comprising ,a rear roller, a weighted front roller, a pair of intermediate rollers of substantially equal diameters of which the rear one is weighted, and a clearer roller freely resting on the said pair of rollers and engaging the said front and rear rollers.

3. In the top roller train of fiyer frames a pair of intermediate rollers of substantially equal diameters rotated by one and the same bottom proller,,one of said pair of rollers being weighted, for the purpose of shortening the grip upon the roving and; of accommodating varying lengths V p CASPAR SCHIESSER.

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