US2374529A - Art of multistrand band manufacture - Google Patents

Description

yApril 24, 1945. D Q EVERlTT I 2,374,529

ART 0F ML'ISTRAND BAND MANUFACTURE Filed March 11, 1943 3 Sheets-Sheet l I INVENTOR 777m@ -f 777mb@ A Trae/VFY@ April 2, 1945. D. c. EvERlTT ART OF MULTISTRND BAND MANUFACTURE 3 sheets-sweet 2 Filed March 1l, 1943 INVENTOR. 8a/wd C. M,

Apri124, 1945. D. c. EVERITT 2,374,529

ART OF MULTISTRAND BAND MANUFACTURE Filed March l1, 1943 3 Sheets-Sheet 3 INV TOR.

VARTOF Th L#inverttion relates to improvementsl the artofr multiestrandfband manufacture.

j', g1Ba1.1 ,1s `formes `of. a pnirantyl ofiatemuy auracent, securedtogether yarn braidstrands'have particular utility ir`1` the millinery, dress-making and ydrapery arts.` Heretofore itwas customary, in 'formingfani elongated multistrand band or irrgtiilof fabric, to mst joinitogethr by edge to edgeistitlching the total extents of two laterally adjacent strands. 'I'hen, for eachv additional strandfr 'quiredffor the final width of the band, suchstrand would lhave toybe sewed edge` to` edge to 'theeomposite band previously, formed. `.The result was that for the production of av multi- *st :rand` bandthe entire `length of material ,would haveto be handled separately and independently ,with the addition o f each strand thereto. vConsequently the' production of a multi-strand,- band byithe priori practice was,slow,tedious and costly as it .necessitated many successivehandlingsof theband as its width progressed, it required many sewingk machine operators, and required the successivel operation of themachines. l. Y ,1 'y .l

With the Vabove in` mind it is, therefore,Y aprimaryn objectl ofthe present Ainvention to provide almethod of forming multi-strand bandswhich is, practical, economical, expeditious, and Well suited lfor commercial andV large scale operations. l,further object of the invention is` to ,provide azrnethod of forming multi-strand `bands inwhich all ,ofthe `laterally adjacent strands required. to

make -upza band` of adesired `width are 4simul-l taneously Sewed t their ,adjacent strandsso that uponasingle handling of the length of material andin onlythe time required ,for the lateral connection of two strands, `the multi--strand` band of y STATES PATENT', OFFICE i MULTISTRAND BAND lMaNUmc'rUltn` 'A Datiafomveritt,Milwmikeerwis.` 1 Applicationltarch 11, 1943,` SerialtNo. "478,81'7.'y

(ci. 11a-l2.) l

any convenient' plural number of strands'is prodefied-,- 1 Y With the, above and otherobiects in `view the invention consists,v of` the .improvedV art of `multi strand band manufacture, and all ,ofthe steps, partsV andcombinations incident thereto, asset forth in the claims, and all equivalentszthereof. Inthe,accompanyingydrawings in 4which-the same` reference characters indicate` the same parts in all of the views: l Figa 1 isaside-and end perspective. Vview lof the improved `multi-strand band sewing machine; i Fig.4 2his aplan View thereof;

Fig.,3 `:is airagmentary, detail view\,1partly in apparatus-1,... A f

and driving arrangement `for, the individual sew`- ingmachines of thev apparatus; t' Fig. 5 is a' 'fragmentary plan viewfof a short length of a multi-#strand bandas produced by the improved apparatus; t

Fig. 6is` an enlarged perspective view offa sewing machine pressure foot especially-formedfor the proper handling of a 'pair of yarn strands; Fig. '7` is a fragmentary perspective view of an endofthesame; H N L fFig; 8 isa fragmentary perspective view'of the bottom grooved side of the pressure foot: and

` Fig; 9 is an enlarged, fragmentary Vside view of the pressure foot. j `j Referring now more particularly tothe drawings it will` appear that the horizontal platform portion of'an elevated table or support is indicatedby `the numeral 8." Rigidly mountedfoh said platform ,in line formation, and Asuitably spaced apart, area plurality of edge to edge sewing machines 9. While the apparatus is illustrated as including ve longitudinally alined edge to edge sewing machines, 'it should be 'understood that this is merely by way of illustration. The number o f sewing machines incorporated' in theapparatus, vor put into service for agiven strip of fabric band, is dependent upon the number of strands to be incorporated in the band, as will hereafter appear. p

',Ihej'mechanism of each edge to edge sewing machine 9 per se includes means for vertically reciprocating the needle bar I0 and needle II carried thereby in a slightly orbital path'. Each sewing machine additionally has'an operating shaft with an individual pulley wheel' I2 thereon. In Figs. 2 and`4 there illustrated the manner in which all of the sewing machines 9, may be simultaneously driven from a single electric motor I3. The electricl motor is" conveniently mounted on a support, and its motor shaft I4 carries a relatively small pulley I5 engaged-by an endless belt I6.' This belt also engages and drives a relatively large pulley I1 mounted fast on `an elongated pulley shaft I8 which is mounted in suitable bearing brackets along one side edge portionof the support 8. At properly spacedlntervals on the pulley shaft .I8 are pulleys I9,there being one of such pulleys for each of the sewing machines y9 to be operated. Each pulley `Ilifis connected `by a beltV pulley I2. l

l There is'suitably mounted; for each sewing ma- `chine 9 a sewing thread spool 2I `andan elevated ,Fig, fl is` aqiragmentary,.detaillview ofthe motor 55 sewingthreadguide from whence a strand of thread,23 Vis extended under tension tothe needle 2Il` with a sewing machineV bar I0 and sewing -machine is adapted to have fed to it below its pressure foot 24 van individual yarn strand.

In addition to said yarn `strand the rst sewing machine 9 in the series (referring to the machine needle Il of a sewing machine. Each,

dividual yarn strand as previously mentioned and a width dffeempsite @and mefegfiarfdnfeeby the strands previously longitudinally united. V74Fo'rthe sake of clarity the yarn strand extended to the first machine of the series, other than the stra-di' 30, will be designated 25, while the individual yarn ,i

strands fed to each successive machine wi designated by the numerals 2e, 21, 2,3, ,and 26; 111- elusive. The individual yarn strands 252128521? 28, 29, and 30 are fed from-suppliesimleones 'or bins (not shown), disposed vc'nver'iiently'closel to and below the respective sewing machines .9 `which lila' serve. l eyeietsbguiaes'al; idividualstrencls er h However, as to. 9391@ .Successiv ne machine, .isiy @f two strandsfand-is 'gidecfb the band guide 34 of the secondvmainliner and along the innermost ,strand-is. fed :the

ing a three-ply band. The same operations take place at al1 of the subsequent sewing machines in the series, and the width of the ultimate composite multi-strand band is dependent upon the number of sewing machines 9 in the apparatus. Beyond the last machine in the series the completed strip of band material of the desired width continuously passes over the end of the table 8 and is received byva suitable receptacle. The process may be car- 'riecl `n"'ir"'an5i desired length A` if` `ft`irrie and of course 'an unbroken length of band material is produced, which may ultimately be severed into` Y desired lengths.

A fragment of a multi-strand band as produced N `1eV apparatus of Figs. 1 and 2 is shown in Fig. 5 o the 4drawings, wherein the strands 25 and l ol'fvver'e 'first' united and simultaneously with the n. inefeeding ofnew strands all of the sewing maindividual strand x26 -which, ,by the second'fsewing lilacklricv 9, isv .united by `edgefto. edgestibching `to lam@.3.15.11@1.1.61 2510i the two'eply :band-:thereby yfornichines' `9 were operating to simultaneously join strand 26.with previously joined strands 25 and .zfl 15; ahjd'ip.:

. aus 'relationship'. said yarn '.(s'tilans `"`fAn improved pressure #foot 'Zd'is shown in de-4 I is penmitted by virtue of the unobstructed inner margins of the grooves adjacent the slot 49. This lateral crowding together of the strands takes place where the needle reciprocates and the needle is, therefore, permitted to electively engage the proper side edge portions of the strands for connection by edge to edge sewing. Thereafter the strands which are joined advance through the rearward extents of the grooves 41 and 48 `and are rmly held therein,V with the ridge 50 lodging in the line of connection. between the braid strands.

. It will be observed that at the rear end of the lpressure foot',` the work .surface is beveled o-r inclined as at I. This permits the composite braid to easily clear the pressure foot as it moves beyond the mounted end' ofthe -same. It will be noted that the free end portion of the leg 46 of the pressure foot has its leading edge eccentrically curved, rounded and beveled as at 52. This formation prevents the braid strand entering the groove 48 from being damaged and also is effective in directing the braid strand toward the inner edge ,of the groove and toward the slot 49 to eect the lateral crowding with the adjacent braid strand.

All of the sewing machines 9 operate simultaneously with the in-feeding of the strands 25 to 30 inclusive and with the progression of the band being fabricated through the apparatus. The result is that the production ofa multistrand 4band is accomplished very expeditiously and very economically. The nished band leaves the apparatus after the lapse of atime period commensurate with the time required for the edgewise stitching together of only a lpair of strands.` The apparatus is under the control of but a single operator and receives its power directly from a single motor. Obviously, any number of machines in the series may be utilized, depending upon the width of and number of strands required in the iinal band.

Various Ichanges and modications may be made in the method `of forming multi-strand bands, without departing from the spirit of the invention, and all such changes are contemplated as may come within the scope of the claims.

What is claimed as the invention'is: 1. The method of forming a multi-strand band comprising, continuously longitudinally sewing ing each additional in-fed strand and a strand` of the work thereadjacent While the strands are progressing longitudinally and `commencing immediately at the point of introduction of each additional in-fed strand 21 The method of forming a multi-strand band comprising, continuously longitudinally sewing together a pair of elongated strands by edge to edge stitching, `continuously simultaneously infeeding additional elongated strands lat spaced points along the forward path of travel of the work, supporting the work in taut formation only -at longitudianlly spaced points, engaging the work adjacent the points of support to advance l it in a rectilineal path, biasing the' work slightly laterally in one direction along its path of advancement, mechanically guiding each of the infed strands adjacent its point of introduction to dispose it adjacent the next rearward in-fed strand, and continuously, simultaneously longitudinally sewing together by edge rto edge stitching each additional in-fed strand and the strand adjacent which it is disposed while the strands are progressing longitudinally and commencing immediately., at the point of introduction of each additional in-fed strand.

DAVID C. EVERITI.

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