US1600200A - Carding machine - Google Patents

Description

Sept. 14, 1926. 1,600,200.,

E. FIEVET some momma File Q d Oct. 16. 1925 recuperating cylinder) was not Patented Sept. 14, 1926. i 1

PATENT. OFFICE.

EUGENE EIEvEr, oE LILLE, FRANCE.

CARDING MACHINE.

Application filed October 16, 1925, Serial No. 62,741, and in France November 21, 1924.

This invention relates to carding machines and more particularly .to cards for treating the tow of flax, hemp, jute and the like. The invention relates to improvements in a recuperating device which is applicable to the said cards.

The recuperating device above referred to consists, broadly, in a channel formed by means of the cooperation or association of inclined boards or plates of sheet iron which may be fixed or oscillating. The waste from the carding rollers falls upon the said plates which carry it to grating or separators which are oscillated or shaken so as to expel the straws, dust and the like from the waste, leaving the textile fibres upon a shell or receptacle from which they are recovered by a recuperating cylinder provided with spikes or pins. This recuperating cylinder transfers the fibres to one of the lower strippers of the card, below which the said recuperator is arranged, so that the said fibres will be restored to the drum of the card.

As the result of numerous experiments in which the different members and arrangements put forward in the many dlfferent forms of construction described in the above mentioned patent and its patent of addition, have been tried, the recuperating apparatus which resulted and which was adopted comprised finally only the outer boards or plates the recuperating cylinder and the separators with the shell formed in one piece.

However, the results obtained by the use of this recuperator have never given complete satisfaction in view of the fact that the thread upon issuing from the card frequently possessed faults which were detrimental to the subsequent spinning and preparing operations. 7 V

A study of the causes of the irregularities or faults in the spun yarns occurring from cards provided with this recuperating arrangement, has led to the discovery first of all that this fault arose from frequent breaks or cuts in the web of recuperated fibres, which were spread over the web normally covering the large carding drum and fura ther that these frequently occurring breaks in the recuperated web arose from an irregularity in the supply, to the recuperating cylinder, of fibres and waste falling from the card upon the outer plates, the inclination of which (dependent upon the position of the separators and the shell supplying @Glil not be suflicient to ensure alone the continuous sliding of the substances over the whole length of the surface of the said boards.

In order to overcome this disadvantage, the said boards were constantly shaken mechanically by any means, such, for example by subjecting them to the shocks imparted to the separator of the shell supplying the recuperating cylinder. These mechanical agitating means were frequently faulty, and the fibres and wasteno longer slipped continuously over the length of the boards, but accumulated in irregular masses upon the boards and then slid down suddenly, in more or less compact and large masses, towards the separator and fed the recuperator'irregularly.

For the same purpose, in order to enable' the fibresand the Waste to slide regularly along the outer boards and to thus render the supply constant, the sliding surfaces of the latter were deeply curved inwards, this result being no more satisfactory as the fibres accumulated just as much at the base of the curve of the boards.

Still with the same object in view, this invention relates to improvements in this type of recuperator, by virtue of which a regular supply of fibres to the recuperating cylinder is obtained, the result being that a web of fibres is recuperated without breaks and the spun yarn obtained afterwards is regular and even.

The improvements consist essentially, in giving the boards or plates as great an inclination as possible. which inclination moreover must be about the same for each board, while allowing them to feed the separatorshell of the recuperating cylinder directly, the said boards having a plane sliding sur face.

This effect is obtained by increasing the distance between the drum and the lower ends of the said boards as much as possible, the boards being arranged so as to still feed the separator-shell directly, the fibres being recuperated by the recuperating cylinder placed above the separator-shelland in the vertical plane passing through the axis of V the large carding drum, and transferred to the stripper by means of an intermediate cylinder placed between the said recuperating cylinder and the stripper.

The im rovements which form the sub-- jest of this invention, and which the recuperating arrangement, are illustrated diagrammatically, by way of example, in the accompanying drawing, in which Figure 1 is a side elevation of the lower part of a card of any type, but in which a stripper at the bottom of the card passes in proxin'ri'ty to the vertical plane through the axis of the large drum, and to which card the iniproved recuperating arrangement is fitted;

Figure 2 is a similar view of a card, in which none of the strippers at the bottom of the card pass in proximity the vertical plane through the axis of the large drum and to which card the improved recuperating arrangement is also fitted.

Figure 3 shows a diagrammatic layout of a fibre recuperating device, to clearly illustrate the novel purpose, function and ad vantages of my imp'roven'ie'nts in Figs, 1 and 2;

In the figures, referring to the first application of my invention, 1 is the large eardin'g drum, 2 one of the lower strippers which is in proximity to the vertical plane passing through the axis of the said large cylinder 1; 3 are the boards or plates placed direct 1y above the ends of the separator-shell 4 which they feed, and 5 is the recuperating cylinder placed in the vertical plane passing through the axis of the large-drum 1, above the separator-shell 4, from which re cu'perating cylinder 5 raises the fibres in order to transfer them, through the intermediary of a roller 6, to the stripper 2.

It will be understood that the fibres falling from the card will be supplied to the recuperating cylinder regularly and without interruption, due to the very steep inclination given to the boards. On the other hand, in the earlier stages of the invention before the introduction of the improvements to which this application relates, the in clination of the boards was less (as shown in Fig. due to the fact that the arrange ment comprised the recuperating cylinder alone, and that the separator-shell, the ends of which had to meet the ends of the boards, was as a consequence, nearer the large drum,

from which it will be understood, by com parison with the improved arrangement,

that with the boards at this smaller angle of inclination, the fibres falling from the card could not be fed regularly and without interruption to the recuperating cylinder.

Referring to the second application of the invention -(Fig. 2), in which arrangement the lower stripper 2 does not pass in proximity to the vertical plane through the of the large drum the arrangement remains the same and conforms to the invention, in spite of the modified position of the said stripper 2, in this sense, that the boards 3 have a steep inclination, that the recuperatin'g cylinder 5, through the intermediary ot the cylinder 6, may be placed somewhere near the vertical. plane passing through the axis of the large drum, which enables the centre of the separator-shell to be kept in proximity to the same said vertical central plane through the large drum and consequently the hearts 3 to be given approxi mately the same slope as each other.

By comparison it is easily understood that before the introduction of the improvements to which this application relates, the application of the recuperator to cards of this second type (thatis to say with a bott-o-i'n stripper, at a distance from the vertical plane passing through the axis of the large drum) was defective, if not impossible. This was due to the fact that the recuperating cylinder being of necessity in a position removed from the vertical plane passing through the axis of the large drum, it followed that the separator-shell itself was also at a distance from this axis and that consequently if one of the boards feeding it was arranged at an'inclination which was almost sufiicient to ensure an approximately suitable :te'ed ofthe waste, on the other hand, the opposite board had an entirely inoperative inclination (Fig. 3), this single fault justifying the non-application of the re cuperator cards of the second type above mentioned.

It is understood that modifications, alterations and improvements in the arrangement and in the members may be made wit-hout going outside the scope of the invention.

Vfhat I claim is 1. A recuperating device for cards, including boards for guiding the fall of waste fibres, characterized by the feature that'the said boards are inclined at an angle which more nearly approaches the vertical, both boards having approximately the same inclination, the said boards having a plane sliding surfaceand the lower ends of the said boards leading on to the separator-shell of the recuperating cylinder, so as to feed the carding waste directly on to the latter.

2. The improved recuperating apparatus as claimed in claim 1, possessing the advantage that it may be applied to all types of cards, and characterized by the feature that whatever he the position of the bottom stripper of the card to which the recuperated fibres have to be transferred by the recuperator, the latter is arranged in such a manner that it is always adjacent the vertical plane passing through the axis of the carding drum, as also is the centre or approximate the centre of the separator-shell the edges of which meet the lower ends ofthe boards which feed it directly, the inclination of each of the boards being approximately the same, this inclination being made. as near to the vertical as possible by lowering the recuperating cylinder andits separator-shell and by transferring the fibres recuperated by the said cylinder to the stripper through an intermediate cylinder placed between the said recuperating cylinder and the stripper.

3. A recuperating device for cards in spinning, including plates arranged on slopes below and on either side of a carding r011, said plates being disposed approximately symmetrically on either side of a vertical line through the axis of the carding roll, a separator shell, a recuperating cylinder for pick ing fibres therefrom, a lower stripper for the carding drum and a roller intermediate the recuperating cylinder and the lower stripper.

4. The recuperating device as in claim 3,

said intermediate roller being at one side of the vertical plane of the axis of the carding drum.

5. The recuperating device as in claim 3 with the stripper roll disposed at one side of the vertical plane of the axis of the carding drum.

In testimony whereof I affix my signature.

' EUGENE FIEVET.

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