US3107879A

US3107879A - Cop carrier

Info

Publication number: US3107879A
Application number: US164912A
Authority: US
Inventors: Keyser Johann Jacob
Original assignee: Individual
Current assignee: Individual
Priority date: 1961-01-13
Filing date: 1962-01-08
Publication date: 1963-10-22
Anticipated expiration: 1980-10-22
Also published as: DE1262843B; CH377248A; GB935140A; FR1310303A

Description

Oct. 22, 1963 v U, KEYSER 3,107,879

COP CARRIER Filed Jan. 8, 1962 3 Sheets-Sheet 1 J. J. KEYSER Oct. 22, 1963 COPCARRIER Filed Jan. .8, 1962 3 Sheets-Sheet 2 Oct. 22, 1963 J. .1. KEYSER 3,107,879

COP CARRIER Filed Jan. 8, 1962 1 s-sheets-sheet s United States Patent 3,107,879 COP CARRIER Johann Jacob Keyser, Grabenallee 16, Aarau, Switzerland Filed Jan. 8, 1962, Ser. No. 164,912 Claims priority, application Germany J an. 13, 1961 7 Claims. (Cl. 24-2-1183) The present invention relates to a cop carrier. By cop carrier is meant a sleeve upon which all single and multiple threads covered by the term yarn may be wound, the processing of which is eifected on spinning, spooling or twisting machines. The sleeves employed in connection with such machines have heretofore been designed as a single coherent part in order to impart upon the sleeve a suflicient stability during the winding of the yarn upon said sleeve as well as during the transport of the sleeve within the plant and also out of the plant.

The employment of such sleeves requires that the cop is somewhat shorter than the total length of the sleeve. Any processing or further processing of a single thread or a twist will be all the more favorable the bigger the cop is, i.e. the greater the number of yards of endless coherent thread length on a yarn body. This requirement of further processing is met to a certain extent with the heretofore known sleeves and machines, but for spinning technological reasons, limits are encountered, for instance with regard to the balloon length or the balloon diameter, when working on ring spinning or ring twisting machines. Also with spinning machines, certain limits have to be met because for instance with a iiyer, a certain length can be admitted only, due to the occurring centrifugal forces when a corresponding rpm. is employed. The same remarks apply to the bells of bell spinning machines. Similar conditions may be encountered with all other spinning machines in spinning and twisting plants, which impede a further enlargement of the cop so that a further economic development is greatly affected. The requirement for an enlargement of the yarn body in the process ing industry has nevertheless remained, and it is for this reason that tests have been conducted concerning so-called large cops. In this connection there exists on one hand the possibility of employing a correspondingly large yarn sleeve composed of a single part. However, in this instance it is necessary to adapt all parts employed in connection with the winding operation so that also these parts have to be dimensioned in conformity with the dimensions of the large cop. This in turn causes difliculties with regard to the construction as well as spinning technological and servicing difficulties.

It has also been proposed instead of a single part yarn sleeve for a large cop to employ multi-sectlonal yarn sleeves. 'In this connection it has been suggested to employ a sleeve composed of two parts in which at a certain winding up phase of one sleeve portion the second sleeve portion is put upon the first sleeve portion, or both parts are placed into each other in order in this way to obtain an enlarged length of the yarn sleeve which, accordingly, will be able to receive a longer cop than customary.

The heretofore known two-sectional yarn sleeves, however, have the drawback that their stability is insuflicient in view of the relatively short overlapping length of the sections, and this lack of stability is encountered not only during the winding up of the yarn on the respective processing machine but also during the further processing, particularly during the transport, because such two-sectional-yarn sleeve has the tendency to bend. This naturally affects the cop so that considerable difiiculties can be encountered when processing the cop at the bent portion. In particular, breaks in the thread are caused thereby and even a number of layers may be pulled off at the same time which then constitute waste. Due to the fact that in view of this two-sectional arrangement also difiiculties in spinning technological respect may occur, aside from the additional expenses concerning the construction, the manufacture of the so-called large cops has not been adopted in industry to any material extent. It is furthermore to be kept in mind that either during the further processing of the sleeves with the yarn wound thereon or at least during the transport of the empty sleeves, it is necessary to detach the two sleeve parts so that when said sleeve parts are again to be employed, a sorting thereof is necessary.

It is, therefore, an object of the present invention to provide a cop carrier which will overcome the above mentioned drawbacks.

It is another object of this inventionto provide a cop carrier which will permit the production of large cops without encountering the heretofore existing difiiculties in this respect with regard to construction, servicing and also with regard to spinning technological aspects.

The invention is illustrated by way of example in the accompanying drawings, in which:

FIG. -1 is a longitudinal section through a cop carrier according to the invention, which consists of a main bobbin body and an auxiliary bobbin body.

FIG. 2 illustrates the same cop carrier as FIG. 1 but in a different position of the auxiliary bobbin body.

FIG. 3 is a longitudinal section through a cop carrier according to the present invention, in which the main bobbin body is composed of an inner bobbin body and an outer transport bobbin body mounted on said inner bobbin body.

PEG. 4 is a longitudinal section through a cop carrier according to the invention, in which the main bobbin body is provided with two auxiliary bobbin bodies, said carrier being shown in its position for the first phase of receiving the yarn.

FIG. 5 shows the same cop carrier as 'FIG. 4 in a position for the second phase of receiving the yarn.

FIG. 6 illustrates the same bobbin carrier as FIGS. 4 and 5 in a position for the third phase of receiving the yarn.

FIGS. 7a, 7b and 70 respectively illustrate in cross section different cross sectional shapes of a cop carrier according to the present invention.

FIGS. 8 and 9 respectively illustrate in longitudinal section the lower end of a cop carrier according to the present invention.

General Arrangement The cop carrier according to the present invention is characterized primarily by a hollow main bobbin body having a substantially uniform cross section throughout its length, and having displaceably mounted thereon one or more auxiliary bobbin bodies, the length of said auxiliary bobbin bodies or bobbin body equalling substantially the length of the main bobbin body divided by the quotient of the number of all auxiliary bobbin bodies plus one and the number of the auxiliary bobbin bodies plus one superimposed upon the respective auxiliary bobbin body.

In this way, the invention permits the manufacture of a cop carrier for large cops, which consists at least of two parts permanently superimposed upon each other and which due to this superimposed condition over the total length of each auxiliary bobbin body will have a stability at least equalling that of a yarn sleeve consisting of a single part. As a matter of fact, the cop carrier according to the present invention may even have a higher stability. In addition thereto, a cop carrier according to the present invention also improves the conditions in spinning technological respect while simultaneously facilitating the handling and servicing of the cop carrier.

Various possibilities exist for the design of the main bobbin body and the auxiliary bobbin bodies according to the present invention. Thus, in conformity with the invention, the main bobbin body and the auxiliary bobbin body or bobbin bodies may have identical wall thickness. However, the main bobbin body may have a greater wall thickness than the auxiliary bobbin body or bobbin bodies. Furthermore, the main bobbin body may be composed of an inner supporting bobbin body and a superimposed transport bobbin body of approximately the same length, in which instance the latter may have the wall thickness of an auxiliary bobbin body.

Inasmuch as in spite of the relative axial displaceability of the main bobbin body and the auxiliary bobbin body or bobbin bodies it is necessary that the position of these bodies be assured in radial direction, it is provided in conformity with the present invention that the main bobbin body and the auxiliary bobbin body or bobbin bodies have a cross sectional shape, for instance oval or polygonal, which is identical with regard to the respective diameter and which will bring about the transmission of rotation from one bobbin to the other. In addition to the transmission of rotation obtained in this way, simultaneously an equalization of the tolerance may be obtained for the irregularities which unavoidably occur when producing the bobbin bodies.

A further feature of the present invention is seen in that the main bobbin body and the auxiliary bobbin body or bobbin bodies are adapted to be connected to each other in a predetermined relative position as to height. This last mentioned feature is not indispensable in any case because, if desired, the cross sectional shape of the main bobbin body and of the auxiliary bobbin body or bobbin bodies will in addition to securing the radial position also assure the axial position to a sufficient extent.

Structural Arrangement Referring now to the drawings in detail and FIGS. 1 and 2 thereof in particular, the cop carrier illustrated therein comprises a hollow main bobbin body 1 of substantially uniform cross section throughout the length thereof. Placed upon the main bobbin body 1 is an auxiliary bobbin body 2 which permanently remains on the main bobbin body 1 but is axially displaceable thereon. If desired, also a plurality of auxiliary bobbin bodies may together with the same or common main bobbin body form a cop carrier as will be explained further below. The length of the main bobbin body 1 determines the length of the cop, whereas the length of the auxiliary bobbin body or bobbin bodies 2 is at a certain ratio with regard to the length of the main bobbin body 1. This ratio is, according to the present invention, so selected that the length of the auxiliary bobbin body substantially equals the length of the main bobbin body divided by the quotient the enumerator of which equals the number of all auxiliary bobbin bodies+l while the denominator equals the number of all auxiliary bobbin bodies-H which are superimposed upon the respective auxiliary bobbin body whose length is to be ascertained. In view of this ratio it will be assured that with a cop carrier composed of a main bobbin body and an auxiliary bobbin body, the length of the auxiliary bobbin body will be approximately half the length of the main bobbin body. With a cop carrier composed of the main bobbin body and two auxiliary bobbin bodies, the length of the inner auxiliary bobbin body mounted on the main bobbin body will be approximately /a of the length of the main bobbin body, whereas the second auxiliary bobbin body mounted on the first auxiliary bobbin body will have a length equalling /3 of the main bobbin body. Similarly, with a cop carrier composed of the main bobbin body and three auxiliary bobbin bodies mounted thereon, the

length of the auxiliary bobbin bodies in the sequence from the innermost to the outermost auxiliary bobbin body will respectively amount to A, /2 and A of the length of the main bobbin body.

The main bobbin body and also the auxiliary bobbin bodies may consist of various materials, for instance the main bobbin body may be wound up of paper in the same manner as it is generally known in connection with paper sleeves or mailing tubes. The thus obtained bobbin bodies may also be impregnated. If desired, the cop carriers may also be made of synthetic material or metal while, depending on the purpose of employment, the main and auxiliary bobbin bodies may be made of the same or different materials. Depending on the material employed, the main bobbin body and the auxiliary bobbin bodies may have the same wall thickness. In the embodi ment illustrated in FIGS. 1 and 2, the main bobbin body 1 which is assumed to have been made up of wound paper, has a greater wall thickness than the auxiliary bobbin body 2. There also exists the possibility of designing a cop carrier according to the present invention as so-called transport sleeve as shown for instance in FIG. 3.

According to FIG. 3, the main bobbin body is, in contrast to FIGS. 1 and 2, composed of two sections of substantially identical length. More specifically, the cop carrier according to FIG. 3 consists of an inner carrier body 3 and a superimposed transport body 4 of substantially the same length as carrier body 3. Furthermore, an auxiliary bobbin body 5 is mounted on the transport body 4. The wall thickness of the transport body 4 substantially corresponds to the wall thickness of the auxiliary bobbin body 5.

FIGS. 4, 5 and 6 illustrate a cop carrier according to the invention which is composed of a main bobbin body 6 and two superimposed

auxiliary bobbin bodies

7 and 8. FIGS. 4 to 6 respectively illustrate diiferent positions of the

auxiliary bobbin bodies

7 and 8 on the main bobbin body 6 during the winding up operation of the yarn upon the cop carrier. The relative positions of the bobbin bodies according to FIG. 4 correspond to the first winding phase, whereas the relative positions of the bobbin bodies according to FIG. 5 correspond to the second winding phase, and the relative positions of the bobbin bodies according to FIG. 6 correspond to the third phase of the winding operation.

FIGS. 7 a, 7b and 7 c respectively illustrate various possibilities with regard to the design of the cross section of the bobbin body. As will be seen from these figures, the

' main bobbin body and the auxiliary bobbin body or bodies have a cross sectional shape in conformity with the diameter thereof, the cross sectional shape being such as to cause the auxiliary bobbin bodies to rotate together with the main bobbin body.

More specifically, with regard to FIG. 7a, the main bobbin body 9 and the auxiliary bobbin body 10 have a corresponding non-round contour so that the main bobbin body 9 and the auxiliary bobbin body 10 are prevented from rotating relative to each other, i.e. when the main bobbin body 9 is rotated, also the auxiliary bobbin body 10 will be rotated without any slip loss.

According to FIG. 7b, the main bobbin body 11 is provided with longitudinal grooves 13 engaged by corresponding longitudinal beads 13' of the adjacent auxiliary bobbin body. Corresponding beads are provided on the other auxiliary bobbin bodies for engagement with corresponding grooves in the respective bobbin bodies therebelow. In this way, also a proper slip-free rotation of the auxiliary bobbin bodies with the main bobbin body will be assured.

According to FIG. 70, the main bobbin body 14 and the auxiliary bobbin body 15 are designed as corresponding polygons so that also in this instance a slip-free rotation of the auxiliary bobbin body with the main bobbin body will be assured.

From the above it will be obvious that numerous other possibilities exist in order to assure that the auxiliary bobbin bodies will properly rotate together with the main bobbin body. In all instances, in addition to the fact that the auxiliary bobbin bodies will be rotated together with the main bobbin body upon rotation of the latter, the arrangement also creates a tolerance compensation for the manufacturing tolerance of the bobbin bodies. The various cross sectional shapes of the bobbin bodies assure the uppermost winding of a winding layer so that the various layers of the wound up yarn of the cop will rest slip-free on the cop carrier.

FIG. 8 illustrates by way of example how the main bobbin body 16 and the auxiliary bobbin body 17 are adapted to be coupled together at a predetermined height. According to the embodiment of FIG. 8, the lower end of the main bobbin body 16 is provided with annular grooves having resting therein a ring 18 which may be engaged by a corresponding groove in the auxiliary bobbin body 17. In this way, the relative position as to height between the main bobbin body 16 and the auxiliary bobbin body 17 will be assured.

According to the embodiment shown in FIG. 9, the lower end of the mainbobbin body 19 is provided with reinforcing head 20 so that the-lower end of the auxiliary bobbin body 21 can be seated upon the shoulder formed by said reinforcing head 20. It is, of course, to be understood that various other possibilities exist in order to establish a definite relative location of one or more auxiliary bobbin bodies with regard to the main bobbin body.

The winding of a yarn upon a cop carrier according to the present invention is effected in the following manner.

Referring first again to FIGS. 1 and 2, according to which the cop carrier is composed of the main bobbin body 1 and the auxiliary bobbin body 2, this carrier is first placed upon a spindle adapted to rotate, and the auxiliary bobbin body 2 is moved into FIG. 1 position which means that the auxiliary bobbin body 2 during the first winding phase occupies its upper position at the upper portion of the main bobbin body 1. By a corresponding height adjustment of the spindle rail, or for instance the ring rail, the rings are with their runners brought into such a position that the first winding layer will start at the lower end of the auxiliary bobbin body 2. The winding operation will then be continued in customary manner until nearly the upper end of the auxiliary bobbin body 2 has been reached. In spite of the dimensions resulting from the length of the main bobbin body 1 of the finished cop, during the first winding phase a relatively short balloon length can be maintained which has a favorable effect upon the spinning operation. As soon as the winding up operation has progressed to such an extent that the upper end of the auxiliary bobbin body 2 has been nearly reached, the main bobbin body 1 and the auxiliary bobbin body 2 together with the wound up yarn thereon are moved relative to each other so that the relative location between the two bobbin bodies 1 and 2 will correspond to that of FIG. 2. By corresponding movement of the spindle rail or for instance the ring rail, the winding up operation can be continued without difficulties so that the winding layers pass from the upper end of the auxiliary bobbin body 2 to the main bobbin body 1. The winding up operation will then be continued under these conditions until the upper end of the main bobbin body 1 has been covered with yarn in the customary manner. Also during this second phase, the winding is effected with a similarly favorable balloon length as was the case during the first winding phase. As soon as the yarn body on the cop carrier has been completed, the cop carrier together with the cop thereon is withdrawn from the spindle and may now be processed further. It will be obvious that the main bobbin body 1 together with the auxiliary bobbin body 2 forms a stable cop carrier which has no tendency to bend during the operation or during further processing.

If for reasons of freight costs, a cop carrier similar to the well known transport sleeves is to be employed, as

shown in FIG. 3, the winding up operation will be effected in the same manner as described above. After the winding operation has been completed, in this instance only the transport body 4 with the auxiliary bobbin body 5 thereon and the cop on the bobbin bodies 4 and 5 will be withdrawn from the main bobbin body 3 and passed on for further processing.

The winding up of yarn upon a cop carrier composed of a main bobbin body and two auxiliary bobbin bodies as illustrated in FIGS. 4 to 6 is efiected in a similar manner. During the first winding phase,'the upper ends of the 'main bobbin body 6 and also of the two auxiliary bobbin bodies" 7 and 8 are approximately at the same level, and the winding up of the yarn upon the entire cop carrier starts at the lower end body 8. As soon as the wound up yarn has reached the. upper end of the auxiliary bobbin body 8, the latter is displaced into FIG; 5 position, and the winding up operation is continued while the yarn passes from the auxiliary bobbin body 8 to the auxiliary bobbin body 7. This operation is continued until also the yarn on the auxiliary bobbin body 7 reaches up to near the upper end thereof. Following this second winding phase, again a relative displacement between the main bobbin body 6 and the

auxiliary bobbin bodies

7 and 8 is'eifected so that the lower ends of all bobbin bodies will be approximately at the same level as shown in FIG. 6. Thereupon, the third Winding phase wiil be carried out while the yarn passes from the upper end of the auxiliary bobbin body 7 to the main bobbin body 6 and is continued on the latter until the upper end of the main bobbin body 6 has been reached by the yarn. At this time, the cop has been completed in its entire length.

When comparing a cop carrier provided with one auxiliary bobbin body as shown in FIGS. 1 or 2 with a cop carrier accordingto FIGS. 4 to 6 provided with two auxiliary bobbin bodies, it will be seen that the same length of the main bobbin body and with increasing number of auxiliary bobbin bodies a furfther reduction in the balloon length may be obtained. On the other hand, when maintaining a balloon length as it will be obtained when winding up yarn on a carrier according to FIGS. 1 and 2, and when employing a cop carrier according to FIG. 4 provided with two bobbin bodies, an increase in the total length of the main bobbin body and thereby of the cop to be produced can be obtained. This increase yields a cop which is by one half larger than that which can be obtained with a cop carrier according to FIGS. 1 and 2. Corresponding remarks apply when employing a main bobbin body with three or more auxiliary bobbin bodies, in which instance the increase depends on the number of the auxiliary bobbin bodies employed.

A cop carrier according to the invention may in various manners be adapted tothe various purposes of employment without sacrificing the essence of the present inventron. With many machines a continuous winding up of a yarn on a cop carrier according to the invention is possible when the parts controlling the winding permit corresponding movements.

It is, of course, to be understood that the present inventron 1s, by no means, limited to the particular constructions shown in the drawings but also comprises any modifications within the scope of the appended claims.

What I claim is:

l A cop carrier, which comprises in combination: a mam tubular bobbin member equalling in length at least the total length of the maximum cop to be produced on said cop carrier, and at least one auxiliary tubular bobbin means surrounding and slidably engaging said main tubular bobbin member, said auxiliary bobbin means being considerably shorter than said main bobbin member and being adjustable in longitudinal direction thereof relative to and between the ends of said main bobbin member into diiferent positions for winding yarn on said cop carrier, said auxiliary bobbin means being supported in any of the auxiliary bobbin of said positions along its entire length by said main bobbin member.

2. A cop carrier which comprises in combination: a main tubular bobbin member equalling in length at least the total length of the maximum cop to be produced on said cop carrier; at least one auxiliary tubular bobbin means having a substantially uniform inner diameter along its length and surrounding and slidably engaging said main tubular bobbin member; said auxiliary bobbin means being adjustable in longitudinal direction thereof relative to and between the ends of said main bobbin member into different positions for winding yarn on said cop carrier, said auxiliary bobbin means being supported in any of said positions along its entire length by said main bobbin member; the respective length of each auxiliary bobbin means equalling the length of said main bobbin member divided by the quotient having as enumerator the total number of all auxiliary bobbin means around said main bobbin member, increased by one, and having as denominator that number of auxiliary bobbin means which have an inner diameter larger than the outer diameter of the respective auxiliary bobbin means the length of which is to be determined, increased by one.

'3. A cop carrier according to claim 2, in which the main bobbin member and the auxiliary bobbin means have the same wall thickness.

4. A cop carrier according to claim 2, in which the main bobbin member and the auxiliary bobbin means have different wall thicknesses.

5. A cop carrier, which comprises in combination: a main tubular bobbin member equalling in length at least the total length of the maximum cop to be produced on said cop carrier, said main tubular bobbin member comprising an inner tubular supporting body and a tubular transport body disengageably mounted on said supporting body and having a length substantially equalling the length of said supporting body, and at least one auxiliary tubular bobbin means surrounding and slidably engaging said main tubular bobbin member; said auxiliary bobbin means being considerably shorter than said main bobbin member and being adjustable in longitudinal direction thereof relative to and between the ends of said main bobbin member into difierent positions for winding yarn on said cop carrier, said auxiliary bobbinmeans being supported in any of said positions along its entire length by said main bobbin member, the wall thickness ofsaid transport body and the wall thickness of said auxiliary bobbin means being approximately the same.

6. A cop carrier according to claim 1, in which said main bobbin member and said auxiliary bobbin means surrounding said main bobbin member are provided with meansfor rotatably inter-engaging same.

7. A cop carrier according to claim 1, which includes means for holding said auxiliary bobbin means in the respective adjusted relative position thereof.

References Cited in the file of this patent UNITED STATES PATENTS Great Britain lune 18, 1958

Claims

1. A COP CARRIER, WHICH COMPRISES IN COMBINATION: A MAIN TUBULAR BOBBIN MEMBER EQUALLING IN LENGTH AT LEAST THE TOTAL LENGTH OF THE MAXIMUM COP TO BE PRODUCED ON SAID COP CARRIER, AND AT LEAST ONE AUXILIARY TUBULAR BOBBIN MEANS SURROUNDING AND SLIDABLY ENGAGING SAID MAIN TUBULAR BOBBIN MEMBER, SAID AUXILIARY BOBBIN MEANS BEING CONSIDERABLY SHORTER THAN SAID MAIN BOBBIN MEMBER AND BEING ADJUSTABLE IN LONGITUDINAL DIRECTION THEREOF RELATIVE TO AND BETWEEN THE ENDS OF SAID MAIN BOBBIN MEMBER INTO DIFFERENT POSITIONS FOR WINDING YARN ON SAID COP CARRIER, SAID AUXILIARY BOBBIN MEANS BEING SUPPORTED IN ANY OF SAID POSITIONS ALONG ITS ENTIRE LENGTH BY SAID MAIN BOBBIN MEMBER.