US2030110A - Apparatus for manufacturing twisted artificial yarns or threads - Google Patents

Description

A. W. KEIGHT Feb. 11, 193

1 APPARATUS FOR MANUFACTURING TWISTED ARTIFICIAL YARNS 0R THREADS Filed Oct. 19, 1952,

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v INVENTOR l/L BERT W- kf/l/T 0A WWW ATTORNEYS Patented Fete, i111, i936 2,03,lllll APPARATUS roe i an an'rmromr. rns on runs ac'rmd er of Belawarc Application @ctober 19, 1932, Serial No. 638,499 e Claims. (Cl. 119) This invention relates to a new and improved. process and apparatus for twisting and winding into package form artificial materials, such as yarn, thread, filaments, straw, ribbon and the like (hereinafter referred to as yarn) and has for its principal object the controlling of width of the balloon formed by the yarn rotating about the yarn package.

In the processes for twisting and winding yarn by means of a cap, ring or traveller, as heretofore commonly practiced, the balloon guide situated vertically above the twisting device has been either fixed or capable of being given an initial adjustment by hand after which it was adapted to remain stationary in relation to the twisting device. While fixed guides have been successfully used in twisting and winding yarn onto small packages, it was found that their employment in the production of large yarn packages was not satisfactory. This was due to the fact that as the package filled up the diameter of 'the balloon formed by the rotating yarn, owing to the greater peripheral speed of the yarn package, increased to such an extent that the distance, usually six inches, between the centers of the spindles along the machine was not sumcient for the balloons to clear each other. This resulted in a collision between adjacent balloons and a breaking down of the ends. Where cowlings are employed to prevent the balloons from colliding it was found that the friction between the cowlings and the rapidly revolving balloon imposed an increased tension on the yarn and also caused the breaking of filaments and general weakness in the yarn.

According to the present invention, there is provided for each twisting device a balloon guide which is automatically lowered as the package fills up retaining the balloon within predetermined limits and thus avoiding contact with the top of the package, adjacent balloon, or cowling, when the latter is employed.

Other features and advantages of this invention, together with certain details of construction and combinations of parts, will be described in the. specification and pointed out in the appended claims.

The accompanying drawing shows the present invention as applied to a machine for twisting and winding yarn by means of a cap spinner. It

is to be understood. however, that the particular form of apparatus illustrated and the application thereof are given merely by way of example and that the invention is in no way limited there- 5 to, being capable of wide modification, and of other applications, within the scope of the invention. Figure 1 is a vertical side elevation, partly in section, of the present invention as applied to a cap-spinning device; and

Figure 2 is a cross-sectional elevation taken on line 2-2 in Figure 1 in the direction of the an rows.

Like characters of reference indicate like parts throughout the views of the drawing.

Referring to Figure 1 of the drawing, the reference numeral 3 generally indicates a cap-spinning device. Any desired labor of such capspinnlng devices may be employed in combination or association with apparatus for producing an- 10 tificlal threads, according to the number of jets or nozzles comprised therein or to the number of threads produced thereby or other requirement.

The spindle of the cap-spinning device is mounted in a fixed spindle rail (not shown) and carries a removable cap 5. On the traversing rail 8 is mounted a bobbin carrier l which is formed with a. driving whorl t and a tube 9 and which may be provided with means to engage the bobbin H. The whorl t isrotated by any suitable means 20 (not shown) through the belt 82. The fixed spindles a pass up through bobbin carrier 11 so that the bobbin H is rotated by the bobbin carrier and can be traversed up and down while the spindles remain stationary. The cap-spinning 25 device is also provided with a balloon guard, or cowling, It carried by a plate I 5 running along the front of the spinning machine and secured to the frame it.

The frame it also carries an angle-iron rail it 30 on which is mounted a bracket ll having integral lugs 88 and is which are provided with square apertures 28 forming bearings for rod 22 which is square in cross-section. Suitably fastened to the upper extremity of the rod 22, as by bolt 23, is a balloonguide 21 of any known construction. The lower extremity of the rod 22 is provided with a lug 25 to which is attached an end of a leather strap, or belt. re, the other end of the strap being fastened on a loose wheel 27 of a mechanism, generally indicated by 28. for automatically lowering the balloon guide as the bobbin ll fills up.

This mechanism 28 comprises a shaft 29 driven at a very slow speed proportional to the rate of fill of the bobbin by means of a pulley 9E keyed to the shaft 29. The pulley ti is driven from the pump shaft 32 through speed reducing means generally indicated by reference numeral 33 by means of belts 36 and 35. By this arrangement the lowering of the balloon guide 28 ,will be controlled by the pump shaft and therefore the rate at which the balloon guide is lowered will be automatically adjusted to allow for any change in the speed of the pump and denier of the yarn.

, Fixed to the shaft 29 is a ratchet wheel 36 which cooperates with a pawl 31 attached to loose wheel 21 to controlthe rotation of said loose wheel and therefore the lowering of the balloon guide 24. A spring 38 maintains the pawl in contact with the ratchet wheel.

25 one-quarter of an inch clearance around the top The operation of the device is as follows: The yarn 39,- of associated filaments from a spinning machine or any other suitable source, is passed from feed roller 4! through balloon guide 24 which has been raised to the position indicated by dotdash lines by rotating loose wheel 21 in a clockwise direction. The yarn is then passed between the cowling I 3 and cap 5 and under the edge of the latter onto the bobbin H which is "rotated at a high speed, for example 7,000 to 10,000 R. P. M., by belt l2, the bobbin at the same time being raised and lowered by traversing rail 6 to wind the thread evenly thereon, the spindle 4 and cap 5 remaining stationary.

As the peripheral speed of the bobbin is greater than the speed at which the yarn is fed to it by the feed roller 4 I, the yarn is correspondingly rotated and twisted simultaneously with the winding, the

bottom of cap 5 guiding it onto the revolving bobbin and imparting a drag to it, thus enabling it to be wound onto the bobbin. At the beginning of the winding operation, the guide 24 is raised to the position indicated by the dot-dash line, this position being such that the balloon formed by the yarn rotating about the bobbin has about of the cap 5 at the point A. As the bobbin fills up, the rotation of shaft 29 slowly lowers the rod 22 and with it the balloon guide 24 thus retaining the balloon between such limits that contact with the cowling or the cap top is avoided during the entire operation of filling the bobbin.

In the form of my invention illustrated in the drawing, the loose wheel 21 is shown as being of circular cross-section thus permitting a uniform lowering of the balloon guide 24. It will be understood that by altering the periphery of the loose wheel, the guide may be lowered at ayariable rate for the production -of certain yarn packages.

The principle of an automatically movable balloon guide may be applied to many textile operations involving the use of high speed bobbins, or other yarn packages, whether the yarn is wound onto the high speed bobbin or is drawn away therefrom in a twisting operation. In a winding operation, increase in thediameter of the high speed bobbin involves an increased tension on the yarn due to the greater centrifugal action of the ballooning yarn. It will be seen that the loweringof the balloon guide and thus decreasing the length of the yarn in the balloon will counteract the increase in tension, as the weight of the yarn in the balloon is an important factor in determining the degree of centrifugal force on the yarn and therefore the tension thereof. In a twisting operation wherein the yarn is'drawn from a rotating package, the direction of movement of the yarn guide will of course be reversed. When the yarn package is full the yarn guide will be in proximity to the package and as the yam' is removed from the package the guide will be moved upwardly away from the package thus maintaining .the'proper tension on the yarn. For this latter operation, it will be necessary to reverse the direction of. rotation of pulley 3| and to reverse the position of the ratchet wheel 36 and pawl 31, as will be readily understood.

nism for controlling the rate of movement of the claim as new and desire to secure by Letters Patent is:

1. In apparatus for the production of packages of textile material, the combination with a device for twisting and winding textile material and a guide for said material, of means for moving said guide with respect to said device, said means comprising a vertically reciprocating rod on which said guide is carried, a shaft, a wheel journaled thereon, a flexible member connecting said rod and said wheel, means for preventing the free downward movement of said rod and means for rotating said shaft.

2. In apparatus for the production of pack ages of textile material, the combination with a device for twisting and winding textile material and a guide for said material, of means for moving said guide with respect to said device, said means comprising a vertically reciprocating rod on which said guide is carried, a shaft, a wheel journaled thereon, a flexible member connecting said rod and said wheel, a ratchet wheel on said shaft, means on said wheel cooperating with said ratchet wheel for preventing free downward movement of said rod and means for rotating said shaft.

3. In apparatus for the production of packages of textile material, the combination with a device for twisting and winding textile material and a guide for said material, of means for moving said guide with respect to said device, said means comprising a vertically reciprocating rod on which said guide is carried, a shaft, a wheel journaled thereon, a flexible member connecting said rod and said wheel, a ratchet wheel on said shaft, means, including a pawl, on said wheel cooperating with said ratchet wheel for preventing free downward movement of said rod and means for rotating said shaft.

4. In apparatus for the production of packages of textile materials, the combination of a twisting device having a guide for the material in aline- I spinning device for twisting and winding textile material and a guide for said material, of means for moving said guide with respect to said device, said means comprising a vertically reciprocating rod on which said guide is carried, a shaft, a wheel jou'rnaled thereon, a flexible member connecting said rod and said wheel, means for preventing the free downward movement of said rod and means for rotating said shaft.

6. In apparatus for the production of packages of textile material, the combination with a capspinning device for twisting and winding textile material, in which the edge of the cap is fixed with respect to the spindle of said device, and a guide for said material, of means for moving said guide with respect to said device, said means comprising a vertically reciprocating rod on which said guide is 'carried, a shaft, a wheel journaled thereon, a flexible member connecting said rod and said wheel, means for preventing the free downward T movement of said rod and means for rotating said shaft.

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