US3422513A

US3422513A - Reed threading aid means

Info

Publication number: US3422513A
Application number: US496789A
Authority: US
Inventors: Harold F Anderson
Original assignee: Celanese Corp
Current assignee: Celanese Corp
Priority date: 1965-10-18
Filing date: 1965-10-18
Publication date: 1969-01-21
Anticipated expiration: 1986-01-21

Description

Jan. 21, 1969 H. F. ANDERSON REED THREADING AID MEANS Filed 001:. 18, 1965 REED |o METERING ROLLS EYEBOARD CREEL FIG. 2

INVENTOR. HAROLD F. ANDERSON BY Owl; wm

United States Patent 3,422,513 REED THREADING AID MEANS Harold F. Anderson, Frostburg, Md., assignor to Celanese Corporation, New York, N .Y., a corporation of Delaware Filed Oct. 18, 1965, Ser. No. 496,789 US. C]. 28-54 2 Claims Int. Cl. D02h 13/20; D01d 11/04; D01h 13/04 ABSTRACT OF THE DISCLOSURE A reed for threading yarn wherein certain dents of the reed are predesignated in accordance with groupings of the yarn being threaded whereby errors in thread-up of the reed are avoided.

This invention relates generally to the winding and reeling art. It particularly relates to the beaming of warps from a plurality of individual ends of thread or yarn. Even more particularly, this invention relates to improved reeds used in beaming apparatus.

A reed is used to combine a plurality of yarn sheets, formed from a plurality of individual yarn packages on a creel, into a single warp sheet, While maintaining the individual yarn ends within the warp sheet separated from one another. The width and spacing of the 'warp sheet is adjusted by the reed while it is being guided via the reed onto a beam or spool, as it is being wound into a single package onto the beam. A beam usually contains 800-1200 yarn ends; however, it may even contain as many as 3000 or more individual yarn ends.

When collecting such a plurality of individual ends of yarn in a close side-by-side relationship on a large beam or spool for later use in a fabric-forming operation, such as the warp yarn in knitting or weaving machines, it is of utmost importance that the warp sheet be properly wound onto the beam. Individually yarn ends comprising the warp sheet must be properly aligned as they are being wound onto the beam. They must not cross one another, otherwise the yarn will not unwind properly in the fabric-forming operation.

Proper beaming or winding requires that the reeds used in the beaming operation be accurately threaded. In a beaming operation, there may be as many as three reeds. At least one of the reeds is a fan reed; the others are generally open dent reeds. Each reed dent within the desired width must contain a single yarn end only, and each dent within the desired width must contain a yarn end. In other words, a reed must be threaded so that a single yarn end is in a dent, and no dents should be missed. Whether the reeds are accurately threaded or not is not easily determined; and if a mistake is made in threading, it is generally not discovered until after the complete reed is threaded. This means if a threading mistake is made, particularly in threading fan reeds, the yarn ends starting from the position or dent where the mistake occurs must be cut out and the reed from that position outward completely rethreaded.

Threading mistakes are common and often such mistakes occur numerous times during the same threading. -Rethreading is time consuming. It involves considerable beamer downtime and increased labor costs. It is highly desirable therefore to thread a reed correctly the first time.

It is, therefore, the primary object of my invention to provide an improved reed.

Another object is to provide a reed that can be threaded more accurately the first time, thereby improving the threading operation and in turn the overall beaming operation.

It is also an object to reduce the costs involved in threading reeds for a beaming operation to a minimum.

Other objects of my invention will become more apparent from the following detailed description and appended drawings wherein:

FIGURE 1 illustrates a schematic view of a beaming operation; and

FIGURE 2 is an enlarged view of a fan reed in accordance with my invention used in the beaming apparatus shown in FIGURE 1.

In accordance with the general aspects of my invention, an improved reed is provided having a minority of the dents predesignated in accordance with yarn groupings to aid in proper and accurate threading of the reed.

As illustrated in FIGURE 1 of the drawing, a plurality of individual yarn ends 10 proceed from a source such as creel 11, shown diagrammatically in the drawing, on which is positioned a plurality of individual yarn packages (not shown) to eyeboard 12. Yarn sheets 10a emerge from eyeboard 1'2 and proceed to open dent reed .13. Warp sheet 10b proceeds from open dent reed 13, over tensioning bars or rods 14, around metering rolls 15, through fan reed 16 and finally is wound on beam 17.

For purposes of clarity, yarn sheets 10a are indicated on the drawing as a single line emerging from eyeboard 12. The number of yarn sheets may, however, vary from about 4 to 30. Generally, there are 11 yarn sheets involved in a beaming operation. It is understood, of course, by those skilled in the beaming art, that the number of yarn sheets is determined by the number of ends of yarn being beamed and the type creel being used. A creel, indicated diagrammatically in the drawing, may hold as many as 3000 or more individual bobbins of yarn. Therefore, warp sheet 10b may comprise 3000 or more individual ends of yarn which are wound onto beam 17. Generally, there are 800-1200 yarn ends wound onto a beam. :Each individual yarn end must be threaded through a dent of open dent reed 13 and fan reed 16. The reeds adjust the spacing and width of the warp sheet and guides the warp sheet as it is being wound onto the beam.

Those skilled in the art will of course understand that particular beaming apparatus may vary somewhat from that disclosed in FIGURE 1 of the drawing. Additional reeds may be provided, if desired. In some instances, it may be desirable to thread yarn ends directly from one reed to another. Further, although reed I13 has been referred to as an open dent reed, it may also be a fan reed. Other departures can be made in the apparatus used in beaming without departing from the scope of my invention.

Hereinafter, my invention is described with respect to a fan reed; however, it applies equally as Well to an open dent reed.

Fan reed 16 in accordance with my invention is shown in greater detail in FIGURE 2 of the drawing. As illustrated in said figure the improved fan reed 16 comprises a rectangular framework having end of

side elements

18, 19 and bottom and

top elements

20, 21 and a plurality of times 22. :In a minority of dents 23, a dent being defined as the opening or space between two directly adjacent tines, are located spacers 24 which aid thread-up of the reed.

The overall size and dimensions or" the fan reed, the tine size, dent spacing, etc. are determined by the number of yarn ends beamed and the yarn size. My invention is not deemed limited by any particular reed dimension. Moreover, it is not deemed limited by the number of yarn ends beamed or the yarn size.

Merely by way of explanation, a fan reed may have side elements of from about one inch to 10 inches and bottom and top elements of from about 14 inches to about 84 inches and have from about 100 to about 3000 tines of from about one inch to about 10 inches of exposed length. The tines :may be from about 0.0125 inch to about 0.125 inch thick, by 120" to 250" deep, producing dents of from about 0.0125 inch to about 0.125 inch. The desired dimensions of a reed are determined according to the denier of yarn being processed and the width of beam on which the yarn is wound. Also, desirably thirty percent of the dent space is air space.

Tines 22 are at an angle with respect to bottom element 20 and top element 21. One half of the tines slope toward side element 19. A first angle 25 is formed by each time in this half with respect to bottom element 20. The angle decreases the closer the tine is to side element 19, and may vary from about 90 degrees to about 55 degrees. The other half of the tines, as shown, slope toward side element 18, and form an angle 26 with respect to bottom element 20, equal to angle 25 at the same distance from the center of the reed. Tines 22 are permanently and fixedly secured into bottom element 20 and top element 21 in the manufacture of the reed. The bottom and top elements are cast in a metal mold to incorporate the tines in a manner well known to the molding art.

Spacers 24, which may be of lead, but also may be of plastic or other materials, are positioned in certain of dents 23 which are predesignated in a manner hereinafter described to match groupings of yarn proceeding to the beamer in a beaming operation. The spacers may be incorporated into top element 21 during reed manufacture in a manner known to those skilled in the metal casting art. The spacers are positioned, for example, in the reed to match the top or bottom eye in the rows of eyes in an eyeboard having a plurality of horizontal rows of eyes which are superposed so that the eyes arein vertical alignment. For example, if an eyeboard has ten horizontal rows of eyes each containing 120 eyes, a spacer is positioned in every tenth dent. W hen beaming 1200 yarn ends, e.g., 1200 yarn ends are provided from 1200 individual bobbins positioned on a creel. The yarn ends are threaded through the 1200 eyes in the eyeboard abovedescribed to form ten yarn sheets, each containing 120 individual yarn ends vertically aligned with the individual yarn ends in the other sheets. The ten yarn sheets are threaded, one end at a time, beginning e.-g., with the yarn end emerging from the lower left eye in the eyeboard and continuing with the yarn end vertically aligned, then threading the lowest end in the eye inthe second vertical row from the left, etc. through the dents of a fan reed according to the invention in order to form and to adjust the width of the warp sheet which in turn is wound onto a beam. The reed is provided with an indicia of some sort, such as spacers 24, in dents which correspond numerically to certain eyes in the eyeboard or yarn ends coming from the eyeboard. As above described, a spacer is positioned in every tenth dent which corresponds to each tenth yarn end being threaded in the reed. Consequently, any error in threading a reed is apparent when each spacer is reached. An inaccurate threading is therefore brought to the operators attention long before the threading operation is completed. Early recognition of a threading error results in much less work being caused by the error. In the fan reed above referred to having spacers in every tenth dent, at most nine yarn ends would have to be cut out and rethreaded. Using fan reeds now available, however, an operator may have to cut out as many as 3000 or more yarn ends. Rethreading this many ends results in considerable beamer downtime and added labor cost. To thread a fan reed with 1200 ends, e.g., requires approxi mately hours.

Other means may be used to predesignate certain dents. A reed may, for example, have tines of different colored material, such as diiTerent colored metal, e.g., steel and copper. The dents may be designated by providing that the tines defining the designated dent are of copper while the remainder of the tines are of a different colored metal such as steel.

This invention is further explained, but is not intended to be limited by the following example.

Example An oval dent fan reed 16 according to the invention is shown in FIGURE 2 of the drawing. Side elements 1 8, 19 measure 10% inches in length and bottom and

top elements

20, 21 measure 42 inches in length. The tines 22 are approximately 0.125 inch thick x 0.150 inch deep and have an exposed length of 9 inches. The distance occupied by the tines measure 39% inc-hes at the bottom and fans out to 401 2 inches at the top of the reed. There are 1176 dents 23. Lead spacers 24 measuring /2 inch in length protrude down from the top element 21. Such spacers are united to the top element. The spacers are positioned in every eleventh dent to correspond with the top eye of each vertical row in an eyeboard having eleven horizontal rows of eyes with which the fan is used. In order that the spacers are centered in the reed, the first spacer is positioned in the fifth dent from end element 19 while the last spacer is positioned in the sixth dent from end element 18.

While a preferred embodiment of the invention has been disclosed, the description is intended to be illustrative only and it is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as defined by the appended claims.

Having thus described my invention, I claim:

1. Apparatus for winding a plurality of yarn sheets into a single package comprising:

(a) a creel having a plurality of individual yarn packages located thereon;

(b) an eyeboard located at one end of said creel, said eyeboard having a plurality of horizontal rows of eyes, said rows being vertically superposed whereby said eyes are vertically aligned and whereby individual yarn ends from said packages may be threaded through said eyes to form a plurality of horizontal yarn sheets and vertical rows of yarn;

(c) a beam on which said yarn sheets are wound into a single package; and

(d) a fan reed comprising a substantially rectangular frame having a bottom element, a top element and two side elements connecting said bottom and top elements, a plurality of tines located between said side elements, defining a plurality of dents, said tines being fixedly secured at their ends to said top element and said bottom element, each of a first half of said tines forming a first angle with respect to the bottom element, each of a second half of said tines forming a second angle with respect to the bottom element, the second angle being equal to the first angle, whereby the tines formed a fan shape, the improvement comprising visibly distinguishable spacer means positioned in a minority of said dents to match numerically the top eye of each vertical row of eyes in the eye board whereby the spacers can be used as check points to aid correct threading in the reed.

2. The apparatus of claim 1 wherein a majority of the tines are composed of steel and a minority of the tines are composed of copper.

References Cited UNITED STATES PATENTS 954,512 4/1910 Gourdeau 1391 92 1,605,278 11/1926 Peterson 28-54 2,457,852 l/1949 Tie Fenthal 139-192 3,174,207 3/1965 Duncan et a1. 2832 LOUIS K. RIM-RODT, Primary Examiner.