US2897647A - Machines for the manufacture of cords or the like - Google Patents

Description

Aug. 4', 1959 J. wooDs ETAL MACHINES FOR THE'MANUFACTURE 0F cox-ms 0R Filed Oct. 28. 195

THE LIKE 2 Sheets-Sheet 1 1 J. wooos ETAL 2,897,647

MACHINES FOR THE MANUFACTURE OF CORDS OR THE LIKE Filed Oct. 28, 1955 2 Sheets-Sheet 2 39 fi70 5 J United States. Patent lice MACHINES FOR THE MANUFACTURE OF CORDS OR THE LIKE Joseph Woods and Harold Schofield, Rochdale, England,

assignors to John Bright & Brothers Limited, Lanca- Claims priority, application Great Britain July 13, 1955 1 Claim. (Cl. 57-60) This invention has reference to machines for the manufacture of cords or the like, and has for its object to provide mechanism which will perform the functions of two machines as used at present for the same purpose, thus greatly increasing the production and efiiciency in manufacture and decreasing the space occupied by the machine.

Broadly, the invention contemplates doing in two stages of one operation what has hitherto beendone on two machines as two distinct operations. These two stages may be referred to, for convenience, as twisting and cabling. The twisting stage provides either for adding more turns of dry yarn or thread drawn oif the bobbins, herein referred to as supply bobbins, or for the twisting together of a plurality of dry yarns or threads drawn oil the supply bobbins. done on a set of rollers, the threads or yarns after leaving this set of rollers being, in the second stage, combined or cabled on the same or on a further set of rollers, the final product being wound on a delivery bobbin, or formed into any suitable package.

The invention is more particularly set forth with reference to the accompanying drawings in which:

Fig. 1 is an end view of a partor one head of a machine for carrying the invention .into practice, certain parts being in section andthe whole constituting one Both of these operations are unit, the first and second passes of the thread being indicated by single and double arrows respectively;

Fig. 2 is a front View of the same unit;

Fig. 3 is an end view of the rollers showing the first pass of the thread indicated by single arrows, and the beginning of the second pass indicated by double arrows;

Fig. 4 is an end view of the rollers showing the end of the first pass of the thread indicated by a single arrow, and the second pass indicated by double arrows;

Fig. 5 is a schematic end view of the invention as used for operating upwardly, that is in the direction opposite to that already shown;

Fig. 6 is a side view of the roller arrangement and the course of the threads upwardly in the first pass; and

Fig. 7 is a view, similar to Fig. 6, showing the sam rollers with the thread on the second pass.

For convenience, the invention will be described with reference to its use in making a cord, which is a typical example, in which two twisted dry threads or yarns are combined to form a cord, but it is to be understood that it may be used for combining more than two such twisted threads or yarns, and the term cord is used for convenience, as the final product may not, in every instance, be one to which the term cord would normally be applied.

In carrying out the invention therefore in making a doubled cord, the supply packages of dry yarn or thread 5 and 5, which may be natural or man-made, are mounted on a machine 6 above a set of horizontal rollers, below which take-up bobbins 7 or the like, on which the final product is wound, are also mounted on the machine 2,897,647 Patented 4, 1959 6; the course of the yarn is thus generally downward from above to below though there are certain intermediate upward movements of the yarn.- Both of the top bobbins 5 and 5 and the bottom bobbin 7 are driven by suitable mechanism ,on and forming part of the machine.

Certain yarns, e.g. man-made yarns, are required-to have more turns per inch inserted than those provided in the package and where this is so, the extra turns are put in in the first stage as the yarn is brought down from the top packages to the rollers below, and for this purpose, a flyer is used on the top bobbins.

Extending from end to end of the machine is a driven roller 8 or there may be, as shown inthe drawings, two such driven rollers 8 and 8, both driven and separate from each other, the two rollers when used being parallel to eachother. These rollers 8 and 8, may not be continuous from end to end of the machine, but may be made in sections or headsf so that one section or head canrun or be stopped without alfecting the others. Resting on the top of the driven roller- 8, or on the two driven rollers 8 and 8, when two are used, is what for convenience is referred to as a top roller" 9, which term includes a single roller or two, threev or more rollers end to end.

The top roller 9, whether a single or multiple, is mounted on'a spindle 9a carried at its ends in pivoted supportingarms mounted on the machine, so that it can be raised from the roller or rollers below; These arms are not shown in the drawings. It is to be understood that there is one of these top rollers 9, single or multiple; for each'bobbin or package 7 on'which-the final product is wound. While a single or multiple top roller 9 maybe used with a single driven roller 8, it is preferable to use two-parallel'driven rollers-Sand 8, as shown, as this provides a'double nip on the thread or yarnpassing round the rollers.

Assuming that therev are two driven rollers 8 andl8,

and a single toproller'9, as shown, the threads l0gand '111 from the supply bobbins 5 and 5,'are carried :through guide: eyesflZ -and-13Iover free pulleys 142-1and .l5 and corresponding front guide pulleys and downward across the front of lower free guide pulleys 16 and 17, through guide eyes 18 and under the driven roller 8, over the top roller 9 and down and under the other bottom roller 8, the top roller 9 resting on the threads 10 and 11 which is thus nipped between the top and bottom rollers, and

the twist held and if there are two or more threads the twist in them is held as they are brought together to form a single thread, as these threads which are remote from the middle of the rollers, leave the rollers they are carried up and over pulleys 19 and 20 lying between the pulleys 16 and 17 to bring them back behind the driven roller 8 under which they were first passed, and the two threads are again threaded round the bottom and top rollers 8 and 9 as before, but this time the threads lie between the two threads 21 and 22 drawn oif from the supply bobbins 5 and 5, and this time they come out from the middle of the rollers wound together into a cord 23, which is wound up on the bottom bobbin 7.

It is convenient to mount the supply bobbins 5 and 5 above the rollers, and to work in a downward direction to the bobbins 7, but it is not necessary to work in this direction as it may be desirable to work in .the reverse direction, or even to work horizontally, but it will be understood that the necessary guides and pulleys over which the yarn or thread is passed will be varied according to the direction of movement from the supply to the delivery bobbins, both of which in all constructions are driven. In Figs. 5, 6 and 7, an arrangement for upward working is shown and in this arrangement the supply packages 5 and 5 for the yarn or thread are mounted at a low position on the machine with the take-up bobbin 7 above. I

The threads 10 and 11 from the supply packages and 5 are drawn off through the flyers 24 and the guide eyes 26 over a free roller or rollers 27 from which both thre'ad's'pass parallel with each other under the front bottom roller 8 around the top roller 9 and under the bottom back roller 8, whence they pass up to and over the roller 28' and come down again, this time being close together and between the threads and 11 passing under the front bottom roller 8 as they come from the supply packages 5 and 5; this position is shown in Figs. 5 and 6 which ends the first pass. As the two threads together again encounter the front bottom roller 8, see Fig. 7, they are carried round the rollers 8, 9 and 8 as before in the second pass and are combined into onecord 23, which'is taken over the roller 29. and wound on the take-up bobbin 7 after first being given a final twist by a 'r-ing and traveller mechanism 7 of the well known .form and function. I a

If the initial turns of yarn or thread on the supply bobbins 5 and 5 are, what is known as Z twist, the final 'cord 23-Willbe of S twist, which as will be appreciated, is the reverse of the Z twist so that a firmlywound cord results, though any direction of twist can be used according to requirements.

If the yarn or thread used in the machine be manmade, it is not likely to have the twist in it which is required. It may, for instance, have two and a half turns per inch when twelve are required, and in these conditions flyers or their equivalent are used on the bobbins 5 and 5, to put in the additional turns required, but these, when used, are of conventional form and are not shown in the drawings If the yarn or thread be made from natural fibres, e.g. cotton, and the required number of turns is already provided, the fiyers will be used, not for the purpose of putting in additionalturns but to combine two, three, or more into one strand before the second stage of cording; in both uses the same arrangement and operation are conducted by the rollers.

Where the top roller 9 is of multiple form, it may have two outside rollers for the first stage of the operation, and inside roller for the second or cording stage. The top roller is not positively driven as are the bottom roller or rollers 8 but is rotated by the frictional en- -2,s97,e47 e V 4 gagement with the yarn or thread, and the bottom roller or rollers.

While the invention has been described with reference to the use of one set of rollers for the two stages, it is to be understood that two sets of rollers may be used, one for the first stage and another for the second stage, and in this event the sets of rollers would be parallel and the first pass of the thread would be round the first set and the second pass round the second set; such sets of rollers may both be alike, i.e. with one driven roller or two driven rollers, or there may be one set of each arrangement.

We claim:

In a multipurpose unitary machine for the manufacture of cords, a plurality of supply bobbins each positively rotating in a single direction and from which dry yarns are drawn and twisted in one direction, a take-up bobbin rotated in a direction opposite to the direction of rotation of the supplybobbins of said plurality thereof,

a tripple roller system disposed between said supply and take up bobbins and having at least one driven roller and providing a pair of nips at each pass of the yarns for holding the twist while the ends ofhthe twisted yarns are brought together, the brought-together ends of the yarns being cabled en route from the rollers of said roller system .to said take-up bobbin, the speed of rotation of the supply bobbins of said plurality thereof and said take-up bobbin being related to the speed of rotation of the rollers .of said roller system, the direction of twist in the yarns being reversed in the cabling.

References Cited in the file of this patent UNITED STATES PATENTS

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