US2648875A - Clearer tensioning device - Google Patents

Description

1953 I u. D. GIBSON 2,648,875

CLEARER TENSIONING DEVICE Filed March 27, 1,951

ATTE! R N EYS Patented Aug. 18, 1953 UNITED STATES PATENT ()FFICE John D. Gibson, Lockhart, S. 0.

Application March 27, 1951, Serial N 217,837

textile spinning frames and speeders, and more particularly to a tensioning means for clearers used in removing or collecting loose individual fibers or dust from slivers or rovings.

The object of the invention is to provide a tensioning device for clearers that are used in collecting or removing loose fibers from slivers or rovings, whereby there will be no poor spinnmg.

Another object ofthe invention is to provide a clearer tensioning device which includes a spring member for urging the endless clearer band into contact with the spinning or'drawing rolls, so that the clearer band is self adjusting to the rollers regardless of the size of the rollers, there being a locking means for preventing upward movement of the wooden clearer bar or block.

A further object of the invention is to provide a clearer tensioning means which is extremely simple and inexpensive to manufacture.

Other objects and advantages of the invention 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 have been used to designate like parts through out the same:

' Figure 1 is a transverse sectional view showing a conventional drawing system in which the clearer tensioning means of the presentinvention is attached thereto;

Figure 2 is 'a top plan View of the assembly with parts broken away and in section;

Figure 3 is a fragmentary side elevational view of the wooden clearer bar, showing the clearer tensioning device attached thereto;

Figure 4 is a fragmentary top plan view of the bar, showing the slots for the lug;

Figure 5 is a perspective view of the latch; I Figure ,6 is a fragmentary plan view showing the spring member.

Referring in detail to the drawings, the numeral Ill designates a portion of a spinning or drawing frame which is conventional, and supported in the frame In is a plurality of lower rollers I|, l2 and I3, Figure 1. Arranged above the rollers l2 and I 3 is a plurality of upper rollers 4, l5 and Hi. The upper rollers |4, I5 and I6 are each covered with a leather cover which is indicated by the numeral IT. The stock being worked, such as the sliver or'roving 22, Figure 1, is adapted to pass between the upper and lower sets of rollers.

Formed integrally with the frame ID, or se- 2 Claims. (01. 19-139) cured thereto, is an upstanding lug l8, and mounted above the upper set of rollers is the usual clearer block or bar I9. A pair of securing elements, such as staples, 20 serve to secure the endless clearer belt or band 2| to the bar IS. The clearer band 2| serves to pick up and collect loose individual fibers from the sliver or roving 22, so that there will be no poor spinning.

The present invention is directed to a means for tensioning the clearer band 2| so that the clearer band 2| will function regardless of the size of the rollers. rollers become worn or are replaced by off-size elements, the tensioning means of the present invention will insure that the band 2| continues to function efficiently.

The spring tensioning means includes a spring member 23 that has a web 24, Figure 6, and spaced parallel legs 25, there being a shaft portion 26 extending between the pair of legs 25.

, Circumposed on the shaft portion 26 is a coil spring 21, and suitable securing elements, such as staples 28, Figure 1, serve to connect the spring member 23 to the bar I9. Thus, the spring 2! urges the web portion 24 of the member 23 into engagement with the band 2|, so

that portions of the band 2| will engage the roller l4, whereby lint or other foreign matter will be efficiently collected or picked up by the band. It will be seen from Figures 2, 5 and 6 of the drawings that the spring 2'! includes an or urge the spring 23 into the position shown in Figure 3.'

-A means is provided for preventing accidental movement of the bar l9 upward or away'from the upper set of rollers. Thus, the spring member 23 will be able to properly function. This last-named means comprises a latch or keeper 3|, Figure 5, and the latch 3| includes an offset end portion 32 which is provided with an aperture or opening 33. A suitable securing element, such as a screw, 31, Figure 2, projects through the opening 33 for securing the latch 3| to the bar l9.

The other end of the latch 3| is indicated by the numeral 34, and the free end of the latch 3| seats in or projects into a recess or cut out 35 which is arranged in the lug l8. It will be seen that each of the lugs I8 projects through a slot 36 in the bar I9, and the slots 36 are slightly larger than the lugs I8.

Thus, in the event that the By means of the present invention eyebrowing will be prevented. The tension means of the present invention is adapted to be used on spinning frames, speeders and drawing frames in textile mills. The bar or member 23 is secured to the under surface of the bar I9 by means of the staples 28. The spring 21 causes the member 23 to bear down on the clearer cloth or band 2|, the band 2! being fabricated of cloth 'so that loose cotton fibers will be collected'and retained, and also dust will be collected. The rollers [4, I and I6 each have a cover ll thereon, and. the covers I! may be made of leather, rubb erorcork. The clearer band or cloth 2] does not rotate, but it is constructed similar to an endless belt, and

means of staples 20.

In order to prevent the bar l9 from. moving upwardly and thereby offsetting the advantage of the tensioning bar ormember 23, the latch 3g is prov de when the roving 01'. sliver 232. 5 being processed, the roving or sliver 22. passesibetwe'en fhwsr he" of mice 1 e h s h up er"s'e t or rollers [411a and [,Efa shown in Rig re 1." 'Ijhisf produees a stretch orfdraft th "Qtton stock and while the cotton 22 is moving through the rollers, loose fibers are 001- lected. on he; top ifollersl Eurther, unless the dais; cloth or band 2i is in close contactv with 'p rel efs; a ey r i' h e be W the I, d the'ftop rollers; and when v a' sufiicient quantity. of these loosefibers is collected, these will coll ct or accumulate in the space 1. t h llerv 411 nd; e e a'e e staple .9- Howtv'er, by causing theciea rlbahd z: m bear tivelya e inSt the topl r ler, the loose fibers 'prevnted froin acciim atin'g. on the, top rollers, s'd'that these. loose, fibers pass through between the olear'e balnd; or cloth 2i and the top rollers, so; that asl the top rollers continue to; turn, the fibersl wili cling tof' th e fuzzy woollen Qlht 2 and e heh e ee-fibers an ei i e 6,1 5.01 removed by. the spinner, whenever desired. he hi s hh fer hlhmede ofi pr he teel and the latch It} is connected to the. bar, l 9 by means, of,.a,' screw 31. 'I hefree ndiof -the latch al' mt ep s 'seat f x le 15-, Whie ha een P i QU l-YL filed erhhhdi th a e ainin he 1 e 1 "B. rt fhe qh ehhhha s or h qh h i e t teerh lx i et el l if sent ime o. l h ihtai the rv '9', n t gnr hehhle e Fur her. t; wi l; ex-= 1, at he slot. h e! .1 9m What 1 ar e r wide hh iheflhe 8! hereh h .harl I9-ihah h te; e? miles. n. d ec ion, o h rrows. shown in Figures 1 and 3, as the bar follows the hie-hen qii hefiaelq l rsir h sbe h arct heti Qt h har, as made-the o hrdm: Q loc he eiehfil mm he 9F1 h e ue i ho der 9 relthe r, '95,- he bar lii l i p m ved. fqljwardly, and then. lifted 1. up.

he ehveh h l ar 9; i c in mah i eses.

heavy enough to cause enough friction between the clearer piece 2| and the roller I4, Figure 1, to cause loose fibers to be drawn through and deposited behind the roller I4. Since there are from six to eight clearer pieces supporting the Weight of each bar I9, the necessity of having a heavier or weighted slat or latch to hold the slat down in order to increase the tension of the clearer piece onto the roller (-4 is apparent.

Further,' the rollers sometimes have different sizes so that it is necessary to have individual adjusting clearer pieces 2|. It will be seen from Figure 1 that the clearer band 2| contacts the rollers and that the staples 29 that secure the clearer; band extend beyond the outside edge of the rollers as and I6, Figure 1.

'What is claimed is:

1. In a clearer tensioning device, the combination with a frame, a lug projecting upwardly from sa d frame a h re t Qt rollers h m tenr on Said. am h r h @Fm e above; s le t l s ehd h v ded h d t e w r n h hd h nm$w P- Qd319 2 3 4 r: said bar for engaging said rollers, of a spring means for urging said clearer band into engagen 'ient with said rollers, said spring means cont: p s hlhh mber hiv i llt h he, ed he hen i dea ariahqil we ciiz'nposedbn 'saidmembe'r, and meansfor pre-.. re t i e r hheh eqmehe ht ly-mevih upwardly from said rollers, said last-named means. comprising a latch having, an. o ff set; end secured tosaid' bar, th erel being a cutout in, said lug for receiving the other: end} of;- said latch.

h a erhsi h hede e hemb ne: h i a hem a 1 s o ect n hem ale it 'hf lh e i 'y le s p r ed n said rame, a clearer bar mounted above said rollers a d provided w h, whiz ehe he; a d; 111g, aha h e dl ss le h up r e hy's d. her f0? h e ema e id 30 35: th s he; me ns. e hh iheh te learer; h d: nt heem h i h a s d, elies a dhrihe; means; mm-is he a spring member pivotally connected; to, said deare 1. 9. sn ihemmeho esi 1* a membe hd. m hhs a me fih-tihe. aid qlea h e r m acc d ntal mqvihee rqlv r mz aie. rollers, said last named means comprising a latch e ih h hqfseeur i e eid h e he e-- 9 he a tut- 1 s in i e on r e in he he hcl eid atch,

JOHN D.- G BeQN;

ihteteheseq ieaz hi hie-= hiehateht- UNITED. STATES PATENTS

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