US2700203A - Apparatus for sizing threads - Google Patents

Description

1955 F. 1.. NIMMONS APPARATUS FORSIZING THREADS 2 Sheets-Sheet l Filed Feb. 10, 1955 1N VENTOR jrwzz/f iw'zww ATTORNEY Jan. 25, 1955 .'N|MMONS 2,700,203

I APPARATUS FOR SIZING THREADS Filed Feb. 10, 1953 2 Sheets-Sheet 2 INVENTOR ATTORNEY United States PatentC My invention relates to apparatus for sizing threads. An important object of the invention is to provide a method and means for sizing the warp and selvedge threads and sizing the selvedge threads to a less extent than the sizing of the warp threads.

A further object of the invention is to provide a method and means for applying a reduced constant tension to the selvedge threads, regardless of the change in tension upon the warp threads.

Other objects and advantages of the inventon will be apparent during the course of the following description.

In the accompanying drawings forming a part of this application and in which like numerals are employed to designate like parts throughout same,

Figure 1 is a side elevation of apparatus embodying my'invention, partly diagrammatic, with parts in section and showing the warp thread tension device open,

Figure 2 is a similar view, parts omitted, showing the warp thread tension device somewhat closed,

Figure 3 is a perspective view of one of the warp thread tension devices, and,

Figure 4 is a horizontal section taken on line 44 of Figure 1.

In the drawings where for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a sizing vat holding the sizing 6, shown as having a level 7. Arranged upon the trailing side of the vat 5 are let-off warp rolls 8, and heating.

drums 9 and 10 are disposed upon the leading side of the vat for receiving the warp threads and the selvedge threads and these threads pass to take-up means, not shown. The drums 9 and 10 dry the threads.

Arranged within the vat 7 is an immersion roll 11, disposed within the sizing 6 below the level 7. This immersion roll is rotatably mounted upon the lower ends of vertical bars 12, adjacent to the opposite ends of the vat and these bars are held by means of guides 13 which are stationary and rigidly mounted upon the top of the vat 5. The bars 12 may be stationary and may be clamped in position by bolts 13 and may be vertically adjusted and held in the selected adjusted position. Separate means may be employed to vertically adjust the bars 12 and this means may be similar to that shown in Patent 1,196,810. Arranged within the vat 5 upon the leading side of the immersion roll 11 are spaced lower squeeze rolls 14, rotatably mounted upon the ends of the vat by any suitable means. These squeeze rolls have their lower portions immersed in the sizing 6 but their upper portions project above the level 7. Arranged above the squeeze rolls 14 and in alignment therewith are upper squeeze rolls 15 having their ends suitably mounted upon the ends of the vat 5.

Arranged above and near the trailing squeeze roll 15 adjacent to the opposite ends of the vat, for handling the separated out selvedge threads, are warp theread tension devices 16. These warp thread tension devices are identical and the description of one will suifice. Each warp thread tension device, Figure 3, comprises stationary arms 17, which are rigidly mounted upon a stationary supporting shaft 18, in turn rigidly secured to stationary supports 19. Rotatably mounted upon the leading ends of the arms 17 is a roll 20 and a roll 21 is rotatably mounted upon the opposite ends of the arms 17. A gravity operated device is pivotally mounted upon the stationary rod 18 to swing vertically between the arms 17, including arms 22 pivoted upon the shaft 18. Rigidly secured to the leading ends of the arms 22 vention, is less than the tension applied to the selvedge is a cylindrical weight bar 23 and a cylindrical roll 24 is rigidly secured to the trailing ends of the arms 22. The

non-rotatable roll 24 has spacing elements or pins 25 rigidly secured thereto and projecting above the same. The roll 24 is disposed inwardly of and near the rotatable roll 21. The weight bar 23 is heavier than the non-rotatable roll 24 and hence will maintain the roll 24 raised. The weight bar 23 has a selected weight to act upon the selvedge threads to impart thereto a constant tension, which is less than the tension upon the warp threads. If too much tension is applied to the warp threads, they would be drawn together so closely that they might tend to stick together when the sizing is dried.

The bars 12 are provided at their upper ends with lateral extensions 26, and a guide roll 27 is arranged between these extensions and is rotatably mounted thereon. The guide roll 27 is arranged at an elevation beneath the rolls 20 and 21 and is substantially equidistantly spaced horizontally from the same, as shown.

Arranged upon the trailing side of the guide roll 27 are lower guide rolls 28 and an upper guide roll 29, which are suitably rotatably mounted upon the ends of the vat 5.

The numeral 30 designates the warp threads and 31 the selvedge threads which are carried by the rolls 8, as is customary. As is well known, the selvedge threads are larger or heavier than the warp threads and are usually spaced a shorter distance than the warp threads. It is necessary to apply a less amount of sizing to the selvedge threads than to the warp threads, for if the same amount of sizing is applied, an increased amount of heat would have to be used to dry the selvedge threads which is usually injurious to the warp threads. Further, since the selvedge threads are usually larger and arranged closer together than the warp threads, if the same amount of tension is applied to the warp threads as is applied to the selvedge threads, the warp threads would be drawn too close together and the dried sizing would frequently cause the warp threads to stick together. The tension applied to the warp threads, in accordance with my inthreads and this reduced tension is maintained constant.

The operation of the apparatus and the practice of the method is as follows:

The warp threads 30 and the selvedge threads 31 are both carried by the let-off rolls 8. The warp threads 30 pass from the let-01f rolls 8 and are passed over the guide rolls 28 and beneath the guide roll 29 and then travel downwardly and are immersed in the sizing 6 by being passed beneath the immersion roll 11. The warp threads are then passed between the squeeze rolls 14 and 15 and the excess sizing is removed. These warp threads are then passed about the heating drums 9 and 10 and travel to the take-up means, not shown. The selvedge threads 31 pass from the let-off rolls 8 and pass over the trailing guide roll 28 with the warp threads and are then separated from the warp threads 30 and pass upwardly about the guide roll 29 and then over the roll 21 and then over the non-rotatable roll 24 and extend between the pins 25 and are held suitably spaced by these pins. The selvedge threads 31 then pass downwardly and are passed beneath the guide roll 27 and then over the guide roll 20 and then between the leading squeeze rolls 14 and 15 and then about the heating drums 9 and 10 and are then passed to the take-up means, not shown. The weight bar 23 has a pre-determined weight and maintains the roll 24 elevated during the operation of the apparatus, Figures 1 and 2. Any tendency to increase the tension upon the selvedge threads will cause the roll 24 to swing downwardly in opposition to the weight 23, thus relieving the increased tension upon the selvedge threads and maintaining the tension upon the selvedge threads constant. The tension upon the selvedge threads is less than the tension upon the warp threads, as stated. The proper amount of sizing 6 is applied to the warp threads 30 since they are immersed in the sizing 6 and the excess sizing is removed by passing the warp threads through the two pairs of squeeze rolls 14 and 15. A reduced amount of sizing is applied to the larger selvedge threads 31 by the lower squeeze roll 14, which is partly immersed in the sizing. Not only is a reduced amount of sizing applied to the selvedge threads but a reduced tension is applied "to' the selvedge threadsand" this tension is maintained constant.

It is to be understood that the forms of my IIIVCIIUOI'I herewithshown' and described are to be taken as preterred examples-of the 'sameand -tha-t :various changes mithe-y shape size and arrangement of parts-in the apparatus,

and that changes in the order, of' thestepsf the-methodmay be-resorted-to withoubdeparting from the -sp1rit of my; inventionor I the scope of the 'subjoined claims. Having thus descrihed my invention, I claims 1; A -sizin'g apparatus for warp and selvedge threads,

comprising a sizing vat for holding-the sizing, an immersion roll-"withi n the sizing vat, a-pluralityof-squeeze rolls:

within the vat: upon the leading side of :the immersion ro1l;- the lower squeeze rolls beingpartly submer-gedqn ing rollsand including a pivoted member-including a '30 Weight at one end and a guide element at the opposite end provided with upstanding elements, the selvedge threads. being separated fromlthe -warpthreads-- atthe upper guide rollnand passed upwardly-over the trailing roll carried by the stationary support and over the guide element of the pivoted member and beneath the lower guide roll and then-upwardly over the leading guide roll of the stationarytsupportgand then about the heating drums,

2.;A sizingtapparatus for warp and selvedgethreadscomprising alsizing;-vat for holding the sizing, an immersion roll withincthe sizing-vat,- a-plurality of pairsof squeeze rolls within the vat, the lower squeeze .rollsbeing Y partl'y;-submerged =in=rthe sizing, a guide roll arrangedupon the trailing side of the squeeze-rolls, heating drums arranged .upon r-thedeading side of the --vat,-the -warp threads. engaging. the :guide roll and passing beneath the t immersion roll and between the pairs of squeeze rolls and about the heating drums,-se1vedge thread tension devices"- arranged above the vat, cach -tension device comprising a support, trailing and leading rolls mounted upon the support, a lower guide roll arranged beneath said trailing and leading rolls, a gravity operated device mounted between the trailing and leadingrolls and including a pivoted member having a weight a't-oneend and a guide element at its oppositelend for, the selvedge thread ,,the. selvedge threads being separated from the warp threads'atthe firstnamed guide roll and passing upwardly over said trailing roll carried by the support" andover the guide element f he =.piv ed member and. ben athz' ai lowelzfguide roll and then upwardly over the leading guide roll of said support and between at-leasta pair of the squeeze rolls and then about the heating drums.

3. A sizing apparatus for warp and selvedge threads comprising a sizing vat for holding the sizing, an immersion-roll within the'sizin'g'yat a plurality of pairs of squeeze rolls within the v'at, the lowersqueezerolls being partly submerged in'the sizing a guide roll arranged uponthe trailing sideof thesqueezerolls heating drums ar-- ranged upon the leading sideot the -vat,thegwarp threads engaging the guide roll-and passing beneath the n alersion rolland between'the pairs-of squeeze rolls andaboutthe heating drums, gravity operated tensionmeans for the selvedge threads arranged above the =vatand5including a pivoted' mernber-havinga weight at oneend thereof and a guide eleme'n-t for the slelvedge threads at its oppoe site end, guide rolls for cooperation 'with said'tension means, whereby the selvedge threads are separated 'from; the warp threads at the first named guide roll and-pass upwarldlyandabout said guideelement of the pivoted member, the selvedge threads-also engaging said guidei=- rolls for cooperation with said tension meansv and then passingbe tweenat least a pair of; the-squeeze rolls and then about the heating drums'. w

References Cited inj the file of this patent '0 UNITED STATES PATENTS 934,034 Boyeux Se'pt=. 14," 1909 1,540,265 Johnson June 2, 1925 1,996,810 lle'r'i Apr. 9, 1935 2,120,409 Hill June =14, 1938 2,570,830

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