US1787102A - Knotter - Google Patents

Description

Dec. 30, 1930. B. E. BYRD f 1 1 15787;'102

KNOTTER f Filed Feb. 11, y1921s 2 sheets-sheet 1 48 l y 36 ATTORNEY 30, 1930. Y B `E,.BYRD l KNOTTER l Filed Feb. l11, 1928 z shuts-sheet 2 Ill ORNEY Patented Dec. 30.1930

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PANY, INC., OF 'GASTONIL NORTH LINA.

'y xNo'rTEnf Applique@ inea rebrua'ry E1n-1921s.` serial No. 253,595...

This inventioniis an limprovement in knotf ters", and more' particularl in a knotter for threads of rayon, and the li e. v

The knotter forming the subjectmatterof Patent No. 1,572,181, granted on February 9, 1926,-to Britton E. Byrd, 4provides a device for tying a weavers knot, thefform of'knot being desirable-becauseof its relatively small flat conformation@l In the said patent the knot is tied byf means of a tying bill, and thethreads are mechani-` call vcrossed on eachv side. of the bill` rior to tlie operation thereof, so that the billin the first halt` of its revolution orms a loop in one strand through which the, other passes, and in the last halfof its revolution-,cutsoif and clam s one strand, and draws the cut end through tlhe loop so formed, thereby` complet# ing the weavers knot, vwhich is strained tightened 'as it is stripped from the bill.-

While the said'form of knot is entirelysatisfactory for linen, cotton, -andywoolen threads of the usual twist, it has been discovered that iny threads wherein the surface coeicient of friction is'relatively small, and

and

the fibers arerelatively stiti, as for instance, y

in rayon orartifi'cialsilks of every character,

the ends of the threads at the knot tend to f back out,'thus' to-loosen the knot. v

'A primary -object'of the present invention is the provision of a knotter, yconstructed and arranged to tie a weavers knot like that of the patent previously mentioned-but having in addition mechanism for imparting an addipended hereto,

tional loop at the cutends of the .threads lof one thread about the other, the additional. yloop serving as a `stay orscotch for the said ends, to prevent end. .f- .v l yWith these and :other objects in View the backingfout of said vinvention consists .in fthe construction and novel comblnatlons of .parts fully descrlbed hereinafter, illustratedin the accompanying drawings,and pointed out in the claims apit being k.understood that various changes 1n the .orm',1proportion, size and minor'details of construction within the scope ofthe claims, maybe resorted to without departing from the spirit of the invention.

In the drawings forming a part hereof sector in one position.y

kspaced relation by .a

. Fig.'2 1s aniend Viewk lookingtoward the pointof the bill.l

3 is a section on the line 8. -3 of Fig'. `1'.

; F1g. 4 is a sidelview of the casing yof the knotter with the handle removed, and with the sector guard b roken away, showing the Fig, isalongitudinal section F1g.'6 is a plan viewof Fig. 4L

bfFig. 4.

operated thereby, with the casingv indicated infdotted lines. v

Fig.y 8 is a sunilarvview ofthe iocker.`

l l y en yf'alv'vlay togshow `the Acompleted operation of crossing, and.. the initial movement of the bill.-

y F1g. 1Q is a longitudinal sectionof the caslooking at the opposite side from 5.v Y

ig. 11 is a perspective view of'one end Vof'the casing, showing the crossing'mechathe second half ofthe rotation,'and` Fig` 1,4,

the position at thek end of 'the complete rotation. l l

Fig. 15'isl a plan view of the strands at the endof the operation shown in Fig. 13.

. Fig.y 16 is a view s'imilar to Figs. 11, 13

and14, showing the position of the` arts during the stripping ,and straining o lthe knot.,`r

p Fig. -17 .isfagplan ,view of thefstrands. rior to the stripping and strainingmof; the ot.

In the present embodiment of thev invention, the im composed o side plates `l and`2, connected by screw `U-,shaped member 7 and a cross platej, the kmember 7 and the plate 9 being arranged; between the,` side plates, and clamped the-plates. The

fra conronnxon or 'Noafrn elmo- `bolts-3, 4,'. fand 6, and held in Fig, .7 is a view of the sector and the pinion i Fig. 9li' s aplan view of the casinwiththe cover i removed .and `with parts bro roved knotterincl'udes a casing casing` isf completed kbyuan arched C'0ve`1""10,`A

which is secured to the plate 9 by a screw 11, being thus held ,in place on the casing.

A handleimember 12 is secured to the side plate 1 b thezscrew bolt 3, and an adjustable han loop '13 ofjleatheror the like, is supported by the handle member, Beyond the U-shaped member 7, the side plates are outwardly offset, as clearly shownin Figs.-6

portions. The tying bill is arranged between the side plates, the bill including a spirally, -twishted shank 14, journaled at its rear end in t e p'llate 9, as indicated at 15', and passing throug alined vopenlngs in the sides ofl the 4U-shaped member 7. The bill which is of usual construction includes the fixedl jaws' 15 and 16, and the movable jaw 17, which is pivoted between the fixed jaws, and has' a cam. ort'ion' 18 cooperating with an leccentric olpenlng 18a in the forward ,side of the U- s aped member,to move the movable jaw vwith respect to the iixed'jaws when the bill is rotated by vmechani'smto'be described:j

This is"y substantially the yconstruction shown in the Byrd patentjabove referred't.

lever ip'ivoted on 'the scr'ewfbolt'3, and including a thumb ypiece 19 for'operati'n'gthev same,` Thelever .also includes a cam 20 yand a fork ,composed` of arms 21 and 22, between which thespirally twisted portionV ofthe bill shank extends. The arms 21 and 22 are integral, 'and it will be obvious thatv when thev lever is lrocked by means ofthe thumb pieceto cause the arms'to move towardthepoint ofthe'bill, the bill will be rotated. A

, spring 2,3V is provided for normallyho'lding t between the notches 28 `and the lever in the lposition fof Fig. 6', that A'1s r'with the arms adjacent the bolty 5.

' The mechanism forn1e`chanicall'yl crossing the threads "prior tofthe o erationy of the tying bill v`includes apairo rockers 24 and '25,l the v.former being pivotedatv 267to the plate'2,'while the latter is pivoted at`27 to fthe plate 1. The plate 2 is cut vaway'on the upper edge of the `outward-ly offset portion to form two lnotches or recesses 28 and 2 9, fol.' receivingy the two threads A yand B, and the rocker is notched'y as indicated at 30', f orreceiving vone of the threads, the white thread B` in the present instance. lIn the normal position of the parts, the notch 30 is in register with the thread receiving notch'29.' as 'indicated in 'F ig. 5,and there'a-r wall of the notch: indicated at 24a extends upwardly shown inthis ligure-' Y 26y of the rocker TheY pivotal [connection is in vertical register with thisl -wall 24a,-

and iis between t'he'guidenotches 28 and 229.

The "arrangement is jsuch *thatl when'the' rofckeris swung ina :manner tol be presently described, the outer thread B, that is the white `thread in the drawing, is moved above 29, as clearly "ment'of-the shaft is prevented bythe walls of and to the rear of the inner thread A, that is, the black thread of the drawing.

The rocker 25 has two thread receiving notches 31 and 32, separated by an uprivht tongueor wall 33, and the outwardly offset portion ofthe platefl has'thread receiving notches or recesses 34 and 35, registering j with the notches 31 and 32 respectively when and 9, and the crossing mechanism to be de-` scribed is mounted on these 'outwardly offset' theparts' are in normalpostion, and'with an upstanding tongue 36 between the notches, registering. with the 'tongue 33 when the partsare mnormal position. This tongue 36 is curved inwardly at its' top, as shown,

.f fora purpose tobepresently described.

- on feach side ofthe extension 39, and a s ring l r 4 v 38a isarranged between one larm and t e ex-k The bill is krotated by means ofan .elbow slight vdistance therefrom.,v The tongue36 acts as a'stop for ylimitin the downward movement of the varm 37, to t e position shown injFig. 10. f It'will beapparent from the descriptionthat it will be exceedingly dillicult, and practically impossible without intention,

to place the two'threads inione thread'receiving notch ateitherside of the casing. This vcan only be done by passin one of the threads between the free ends of t e arm 37 and the Vwall 24a-wf n 4 vThe rocker 24 is moved bymeans of aslide yplate `41, havingv uided movement onY the outer face of the side plate'2, and `connected to one end of a cross bolt 43, which-is movable longitudinally 'of the casing in slots 44 in the side plates. The bolt or shaft 43 normally rests 1n a notch or recess `45 ,in the cam 20 before'mention'ed',A and the forward wall yof the .notch is extended above the curved upper edge lof the c'amas shown at 46. When downward ressure is made upon the thumb piece of the ever, the shaft or the bolt 43 is constrained to move forwardly by its y'engagement with the rear wall ofl the notch 45.- Upward movethe slots 44, and 'this forwardamovement of the shaft 'is continued until in its travel in` the'slots it passes'above the level of the rear cam behindl the notch 45 is concentric with the shaft v3,.so that no further movement is im y-wall of the notch`45. The upper edge of the is released. As the-lever moves tol its normal position, the shaftfrides on the .curved upper edge of the camfuntil it registers with the notch 45. At thismoment the extension' 46 of thefront1wall of-fthe notch-.engagesthe shaft, moving it the notch.Y f

rearwardly, and again into l The mechanism for .swingingqthe roclker| includes a. sector 47,.which engages a pinion .48- lo rigid with the pivot pin'or shaft 27'o f the rocker. .The sectorhas a radial arm 49 which is pivoted to theside. plate vlas indicated at 50. ,The arm has a slotted extension 51 which is engaged by the end of the shaftf43'.- When 1;, the .shaft movesfforwardly undenthe impulf sion of thelever 19, as previouslydescribed, the arm andA the. 5 .sectorf are swung sharply downward, and the shaft 27 is rotated.' The extent of movement, andthe toothed connec- 20 tion are suchthat substantially two complete` rotations are imparted to the rocker..l Normally therocker stands in theposition of Fig. '11, andl at theend of ythelmovement of the sector it is in the positionof Fig. 14. -Thus 2;, two com lete turns as shown in Fig. 12, are.

imparte -to the strandsrA and B, Thatis, thestrand By may befconsidered 'as .-being wrappedtwice about the strandA.. v j- 4.

1 In `order tocoverthe slot 44 in .the plate 1,

30 aplate r52is secured to the shaft 43, on the outer face of theplate 1;'andmoves with the shaft.I Afguard 53 for thev sector is secured to the body `of .the plate `1,l andto the, outward `olt'set portion thereof. One/strand- A isfcut 33 by the tying bill', and` clamped'between the cutting'bladeand one ofthe "xed j aws, f The other strand is cut by mechanism shownmore particularly inFigs, and 16.5. l 4

The Said mechanism includes .affixed blade 40 54,- which is-one of the armsof a stirrup, eat

' tending on the inner face. of the outwardly olset .portion of the plate 1.,l the other arm being on the outer zfacethereof, and being lsecured to the plate by a screw4 bolt 55,' A mov- 7 4: able blade 56is pivotedonthe bolt 155', and the blade hais a laterally.extendinghollow .pin'f57, which engags` aslot 58 in `a lever 59, The lever is pivoted, onfthe bolt 6 before. mentioned, as shown in Fig'. 10, and the rearend i 50 thereof is forked,',theffork consisting of a long ral-'m 60', and a short arm' 61.-. The long arm rests 'upon a pin 62in the face of'thecam 20 .before entioned.v v-When the lever'l19- ris swung jldwnwardly the pin moves; along the m underf ce of the vlong armuntil'it' strikes the short arm,.-at.which time the movable blade isswung into cutting position,"and 'the'thread .or'strand isrcut. v'Whenthe cam moves m, rearwardlyto normal position, thepinen gages the long arm,'andswings the lever, to.

open theblades. In order to prevent"disen ygagement of the `hollow pin. 57 from the slot 58, aguard63.is provided. yThe guard is als held in place bythe screw l55, and the free end to Y entirely thereof enga es within the hollow of the pin, as shownin; igs; 14 and 16.' v Q The straining and stripping device is con#v stituvted -byalever ,65. pivoted to the plate 1 at 66. This leverat: its inner end has a .fork including` a long arm 67, and a' short arm-68. .The arm 21 of the 4.fork .on the "cam 20 bears against the underside of the longarm. When the.lever 19 is swung-to rotate the bill, `the free end of the fork'ar'm moves against the curved under edge of the llong arm' of .thelever without movingthe lever. ;When, however, the fork arma21engages the short arm 68, the leveris swung, andthe returnof the lever V19 to normal po` `sition returnsv the" lever also `tonormal position. o The forward vend of thelever-.jyvhas r a depending arm 69 'provided at its lower end.

with. a laterally extending hook- `70; The

hook extends beneath the tyin -bill,fand.to a position between the same an the plate2.

When the lever is swung as abovede'- V scriheththe'strpper engages the strands betweenv'the bill and the rocken 24, and strips themr from the' bill, at the Sametime strain# king the knot... .The thread separating arm.37 isnormall positionedin the pathlof movement of t e stripper, and forthis reason',

the said arx'nis pivotedjand .spring4 ressed intono'rnialy position, but is capable o yielding. as the stripper swings upward .to offer by meansof lthe `thumbpiece.. Therst o eration. is the ycrossin rof'thethreads' a `jacent the plate 2. Yhe Vrocker 22I`noves the outerA orwhite `thread inwardly .above the. inner or 1black thread, and tothe inner side thereof, thus crossing thethreads. between the bill and the plate 2,. it being under- 'stoodthat the threads are o n opposite sides of the bill. The same vmovement rotatesthe and the strands tween thebill and the plate l1 are wrapped about eachother in the. man- .nerfshown in Fig. 1.2. Near the completion of 'these movements, the bill hasx commenced rocker 25 throu h two complete revolutions,

-to rotate, and thelpoint -thereof Inovesdowny Y between the crossed threads between the. lbill,

andthe plate 2, thatr is to the space indicated at; C in Fig. 12. Further movement of the bill swn .it to the position of rFi I3, and the m'ova le jaw is opened. Byft e; movement` of the rocker 25," the' inner or`,black thread is .in register withthe space between l12a I the openjaws of -the bill, rand moves info such kSpace as the bill comple-tes the irstharf Y ao ofr its rotation. Meanwhile the innerer black thread has been looped aboutthe bill and' over` the White threfad, as 'clearly shown in Fi 15. Then-nowv the black lthreadjisfcu't and grasped by the bill, the cutting mechanism for' the `fwhite thread comes into operati'omthi's 'thread being clipped by fthe' movable and the fixed blade. 'Immediately afterwards the stripper begins itsupward movement.' It engages between the 'black' and the vwhite threads. at the left of the" billin Fig. l14K, vand draws the form 'off the bill', the clampedend of the black thread B-being thus'drawn through the s ace D in Fig. 11g; 15`vfrom above downward. his'res'ultsfin thefformation ofthe knot shown in Fig. 17, which is a weavers knot, with 'a scotch or stay at .'the outerl side' thereof.` The extra loop providinv the stay is'caused by the extra '20 twist imparte vto the strands bythe pivoted rtoeker'e. y What is claimed as new is l 1.; Mechanism for tying a weavers knot, including a rotary tying bill, means`to 'cross the threads on one side ofthe bill, and means on the other yside to Wind the threads about each other through aI double turn for thepurv pose specified.V v l.

2."In a'knotter including la rotary tying Qaohilhmeansto rotate-the threads one a out lthe other, thereby vto move Ithem'into crossed relation on .opposite sides of the bill, means tooperate thehthread moving means andthe bill Vin sequence, and mechanism to impart a greater movement to one of the thread mov- 'png means than the other for the purpose specified.

v3. In la knetter; including a rotary tying bill, means to rotatethe threads. one about "the'otlier, thereby'to move them into crossed relation on opposite sides of the bill,fmeans 'tooperate the thread'm'oving meansv and the bill fin', sequence, vand'fmechanism to impart a" greater movement `to one ofthe thread moving vrmeans for the lpurpose specified, vthe thread moving means includin'- rockers, eachnhaving seats for receiving the threads in spaced relation, and connections lbetween the operating means 'and the rockers for'moving'the same.

4. In` Va knotter including a` rotary' tying bill, means tovv rotate vthe threads one about 'the'othen thereby to move them into crossed "relation on opposite sides of the bill, means to operate the thread moving means and the bill in sequence, mechanism to impart a greater movement to one'of'the thread movingmeans than'the other for the purpose specified, the connection for the last named rocker including a pinion thereon, anda'sec- .tor Acooperating therewith and operated by the operating means for imparting thev ampliyfiedmovement. 'v y y v5. In a device ofthe class described, a'tying I bill, means to vposition a pair of threads for' knotting by the bill, including means to move the threads at yone sideofthe bill in opposite directions-to cross saidk threads, and means at the other side to rotate the threads about each-.other through a double `turn yfor the pur-l pose specified.

t 6. A knetter includinga tying bill, lmeans for-supporting a pair fof threads in substan- 'tially parallel relation Jon opposite sides of bill rotatin'gmeans, and vmeans in connection with 'one' of said means for impartin a greater movement thereto' than'to the ot er for the purpose specified. f

-8. In a-knot tying device,in combination, a tying bill mechanism-having cutting and clamping means, and `means for positioning a plurality of 'threads' to be acted upon bythe tying bill-mechanism toproduce a knot,'said mea-ns including mechanism fory movin the threads into crossed-relation `at one si e of jthe bill, andmeans at the other side for moving the lthreads into.y double crossed relation. 9. In a knotter,'including1a'frame, and a tying bill rotatable therein, means 'to rotate the bill,said` frame having thread 'holding means at opposite sides of the bill, an auxiliary thread cutting means supported-b one vof the holders, said means including a ladeiXed tothe holder, and a movable blade pivotally and "detachablyconnected with the lixedbl'ade, and meansv operated b 'the' bill rotating means for moving them'ova le blade.

v10.In a knotterfincluding a frame, and

'aftyingl'bill rotatabletherein, said yframe having thread .holding means atoppositev sides Aof the bill, an auxiliar` vthread cuttin means supportedby one oft e..holders, sai means including a k'blade-'fixed to .the holder and a movable blade pivotally. and` detachably connected with the fixed blade, the detachable 'l connection including a screw engagingr the fixed blade and onwhich the movable blade is rotatable, and a. post on the movable blade for engagementby the operating mechanism.

, `1,1. I n.aknotterincluding a frame, and ,a tying bill rotatable therein, said frame having thread holding `means at opposite sides ofthe bill, an auxiliar thread cuttin means supported'gby one of t e holders, sai means including a blade fixed to the holder, and a movable blade pivotally and detachably con- ,y

nected withthe fixed''blade, the detachable connection includingA a .screw engaging the iixed blade and on which them'ova'ble blade is rotatable, a post on the movableblade for enga vement by the operating mechanism, and a spring plate held by the screw and engaging the post.

' 12. In a knotter, including a frame, and a tying bill rotatable therein, said frame having thread holding means at opposite sides of the bill, an auxiliar thread cuttin means supported by one of t e holders, sai means includin a blade fixed to the holder, and a movableblade pivotally and detachably connected with the ixed blade, and means operated by the rotation of the bill for moving the movable blade, the fixed blade being a part of a stirrup including a body and arms arranged on opposite sides of the holder, one of the arms being the xed blade, and the other being connected to the holder.

13. In a knotter, including a rotary tying bill, holders at opposite sides of the bill ton` support a plurality of threads lying alongside each other, means to rotate the bill,

means operated by the bill rotating means to impart rotary movement to the holders in planes transverse to the length of the threads, whereby to move the threads to crossed relation, and means'between the operating means and one of the, holders to move the same through a greater arc than the other.

Signed at Gastonia, in the county of Gaston and State of N. Carolina, this 9th day of February, A. D; 1928.

BRITTON E. BYRD.

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