US1216738A - Looper-thread controller. - Google Patents

Description

D-. S. SEYMOUR. LOOPERY THREAD CONTHOLLEI. APPLICAHON FILED NOV. 5. mm

Patented Feb. 20,1917;

2 SHEETS-SHEET! ;a citizen of the United StateQTresiding at Y Oak Park, in the county of Cook,

DUDLEY S.

snrmoun;

253;;app isalmammals; 1910; seriaimisaaaies To all whom it may mam;- Y z laty ale ran,-

a .6 5 v Be it known that I, 'DUnLEr S. SEYMOUR, 'llnk 9"whicl1 reeiprocated any.

Illinois, have invented certain anew Lful Improvements in Looper -Thread Controllers, of which the following isa description, reference being had to the accompanying drawing and to the letters and. figures 10 i of reference marked thereon.

The invention relates to newv and useful improvements in threadfcontrollers, and

j illustration and .more especially to thread controllersused in connection with a thread carrying looper An object of the invention is to provide a thread controlling mechanism which shall 1 positively take care of the thread duringt the movements of the looper, I

releasing the thread as required in order" to 1 r 1 avoid the skipping of stitches and to assist in. making a comparatively tightstitch.

In the drawings which show ,b

one em odimentof t e invenf anism in p an view. l

- "Fig. 2 is a longitudinalsection through1 yao the machine.

elevation.

Fig. is'a viewpartly section,

Fig. 6 is a detail a a bed plate 1 mm which rises a standard 2 type, and is im'ounted on the end of a s aft 2 j- 2 looper .supporting shaft" 5 is' oscillated I orioaizra'aiijrnriiois, Assists l jo nqrotr' srnc lan anemia in i conrarm; or, CHICAGO, tr mmers,- A .coaron non or mmrzors. .i

1., coizrnoLLi; it

' sficiagiiu iifprtemrs n. 1

State a of and use projecting arm 11, which is connectedby a link 12, 'with a rock shaft 13. The rock 66 taking up and The take-up 17' is carried bya sleeve 18 .up has a" forwardly way of" 920; The take -up' I w 4 tweenjspacedjhrea'd Figure 1 is a sectional view throughthe casin showing the cover-plate removed,

e 100 er and thread controlling mechshaft 5. "This arm'23 is mounted to Oscil -latebetween tlread guides '1 f cated'between thefpulLofi and the take-up 1 for-the looper thread, is athreadclam con 85 a ,gripping memk ers 27 and 28 are secured to partly in section, show- 1 .ing t e pulloff and one of thethreadguides;- .-,therefor.' 1 I I y he loopen V1d edjWith a flat'side 32 so thatwhenthe 7 Ilooper 'supporting shaft .is'in the I, v H ;isliowninFigi-i, the flat portion 32 ofthe partly :in section, show- 9 ing the thread clamped, and the clamp fo'r operating the same. r

a A sawing, tth m -P fO the looper thread at the ex, l

wine rearward movement.

{2 8, and the 012 mping members 2 and 28 95 7 7 s a viewsimilartoFig. 6, show-, Vil'h fling t e take-up member at the iorward end of its strokelj 3 The machine as herein shown, consists of? cillated, the-cant 31 will enga ethe member 28 and positive] yclamp 4 the clamping members" 27- and 28. Asa

further. meansfi ir o -to release the threa 1 finger 35 cates back and;

ease ent with a cam'shoulderfifi'carried by v seem 9 a,

desired wayn Thelooper fsu'pporting'shaft is 'moved 1 endwise in or lerat'ogivetheloo r'ai needle j avoiding movament y meanso asleeve10', 60 'which is molnted between spa d,. collars rigidly secured to thelooper supporting shaft. The sleeve 10 carries a downwardly 1 shaftl3 carr. es an-arm 14, which-is connected to alinl: that maybe reciprocated in any desired w: iy.. The sleeve 10 is held" from oscillation with the looper by means'of the i guide 16,'which may be secured to the frame .70 r in any desired way.

('see Fig. '5)' "vhich is rigidly mounted 'on theiloopersupporting shaft 5. This'takeprojectingnose 19 and, a laterally, prujectingcam-s'haped shoulder 'membe'r 12'--vibrates beui e 2 e. ull-oif ar [ll 23-.i'scarriedby'aeollar 24 80 rigi y" -s"ecu"re1l to the looper supporting 25- and 2e. Lo-

.sisting of spring members 27 and 28. hese a bracket 29 carried hytheframe of the machine byaicrew '30. .A cam 31 carriedsupporting shaft 5, is pro- '90 position I1 1 cam'is adjacent the springclampin member en' the loopersupportin'g'shaft 05-1; L 5

the t adjbetween ening the threadclam s ,I haVe mGuntedon' t a sleeve 10 a'plaie 33 whicheari"ies"an"arm 34' havingarlat arally projecting; cam ffaced (see-Fi 1); This-arm 34 recipro-ma gorth' with the-looper sup,- 4 {I porting shaft, in 1d will'be brought into entake-up is moved into contact with thelooper thread, taking up all slack in the looper'idrawing the'thread between-the in Fig. 7, that is,

the, clamping member v27. This movement, vof the frame 34 through the finger- 35 will crowd the clamping member 27 away from the clampin member 28, and entirely release the thread om all clampling action. I The. thread is led'irom e supply throug a tension 37 and thence thro i guides 25 and 26 ofthe pull-o clamping members 27 and 28, then through the t read guides 21'and 22 to the take-up. The thread is then led through a threat} guide 38 underneath guiding pins 39 40 and through an opening 41, to the looper.

A bracket 42 at the forward end of the opening 21 is provided guiding the looper thread to the looper.

In the operation of looper is.' at

I in the position shown 5. Theneedles atthi's'time are also thread, and eye of the'looper. and'the material taut, so as to allow'the needles to pass between. this portion of the looper thread and the body of the looper. "As soon as the points of the needles are well below the. needlefthread, the looper take-up and is entirely releasedso t lackers-s d/ .3m after the previous needle loops are shed from the looper, so that said'nee'dle loops run up closeto the under surface of to the looper strain.

. When the looper is stroke, the take-up is in the extreme end of the cam shoulder on'tlie underside of the take-up." ,As the'looper starts forward, the cam shoulder will again engage the thread, taking up a portion of the slack before the thread slips over the cam .During the take-up, the looper is being retracted and is-. therefore, at its extreme e v Fig.

a the t read clamps so shoulder, and is released forward movement of the 1. The arm 34 controlling the thread clamp,'--is' therefore,

entire forward As the take-up starts to retract, ing forward and; has moved the a 34, through-the cam drawn therefrom to the pull-ofi';

h the thread-- between the a take-up looper with a curved face for.

my device, when the. the forward end of itsstroke, the take-up is 20" upper-end of their-stroke. 'A's'the' loopershaft oscillates toretract the. looper, the

in Fig. at the.

' tion to the bracket supporting the may be e the ma terial, while-the looper' thread is free fromat the: rear end of its the position shown with the looperthread at it as viewed n whereby in suchposition as torelease theclamping members 27 and 28, and; allow the thread to'be gripped during the" I movement of. the'ctake-up' The entire action of the takeup therefore, at}

.this time is upon-thelooper 'the'thread clamp and the loopenfl 1 bination', hread guides, fa pivotedtake-up member comprising an i foverhanging a thread between the loo rfis movv e to its extreme right hand position, as viewed Fig; I, and -chin c mprising finger 25, opens. that, thread may;

\ the 'takep is moving forward and the tension 37. It willthus seen that I have provideda'pullii for pulling thread through the tension'from the supply, and a 'for controllindgthelooper thread between the pull-off an the looper, and also a thread clamp whichis'loca between the clamp thethread at the pro the action ofthe pull-off an the take-up on the looper thread are substantially independent of each other.

The tak'e up' which especially-ads ted for. a machine having a cy indrical be plateor work support, as its field of operation is extremely small; The

essential features' of the take-up member;

consist'ii the shank portion which is secured tothe loope'r shaft and the overhanging por-' which ifformed with the'iconcentric v move very close.

thread guides and the concentric under surface which resurface: which allows it to and pull-ofi' and which operates to er time so that I have-constructed is 3 as, f

tains the thread in proper relation to the face w ich'takes up and releases o t departing from the spirit of my in-. vention.-'

' take-u ,member, and the projecting"eam sur-' j the thread during each oscillation of the take-up .inemthread slips ofl from the cam shoulder on {he be .Itwill be obvious that minor changes'in the details of construction may." made.

Ha i g thus 'aaa uiyaaaaaaya:

vention, what nation, thread comprising an her face which during each oscillation of the ta k e ,;u p memclaim asjnew and desire-to f secure by Letters Patent, is:- 'i 1. A thread controller including/fin c'ombi-Q guides,- a. take-up member overhanging a'rmfh'avingj a j 1 thread engaging cam projecting fromits in;v

takes up and releases thread I 2. A thread controller including in combi-M, nation, thread guides,1a pivoted take up I member comprising an;- overhanging arm, ace' on its under face:

tained in proper lation to the take i'ip meniben'arid a'cam 'sur- :face for enga having a' concentric an the thread is g the thread.

. -3.- A threa controller including the outer face-of which is substantial centric whereby itpmay, 'o space andth erate in a small 41A thread controller I a's'hank-ada ted to beatarm,

con- Y e, inner faceio which has a pro- 1 f jectingcam threadengagin surface.)

may operate in a small space j ecting thread engagin'gsurf face. y 5. A thread controller comprising a shank adapted to be attachedto an. oscillating ace 'on its inner member, and an overhanging arm, said'over--* hanging arm having a concentric'outer surface whereby it may operate in a'small space,

. and a concentric inner. surface-at its -free end whereby the thread is retained in proper relation to the take-up member, and a proejecting Zthread.

inner surface for engaging the 6. A-thread controller including in combination, thread guides, an oscillatln shaft,

a take-up member secured to said oscillating a shaft and adapted to oscillate between said i thread guides, said take-upj membercompris- ,,relative to the atake-u f' thread assi througfiand un erneiifi I i be substantially straight, at the extremes of e-up member,- and a" ing-an overhanging arm cut away on its under surface, said guides being so-disposed membjer' "that the" the thread guides the overhanging arm, will.

oscillation" of the ta PrQJecting cam portion for-"engaging-"the during, the oscillation of said take-up mer'm' thread and takingup and releasing the same '7. j thread coiaouer including in combi nation, an oscillating shaft, a take-upmem 1 b m unted on said oscillati'n' 7 esbetween which said ta d 'oscillates,said take-up -meinber. havingi'acut 85. 'l a ngf; aft-. throughywhich the,

' i e. b n

taking up" and releasing the thread during-- e -i.up j'member away portion between'itsuouter surface and.

thread is ada passfrom'ione threa'd eluding a projecting-cam- .forjeiigaging and the oscillationofthe take-up. member.'- i.-

meansi for'oscillating said 10o ershaft'a'nd' p moving the same endwise,' "a 45,

8. The? combination of ,a --lo0per shaft;

ooper carried thereby,"actake-up for-th'elooper thread inl ,"cluding an overhanging. take-up arm mount- {ed on said looper shaft, and oscillating there J with, thread guides. arranged on each side of said take-up member, said take-up member having aconcent-ric outer-surface, a part of iith e 'under faceof. said overhanging arm, be- "ing concentric, I'- a nd afthreadi cam sha ed member operates, and" a, tthreadclampin for taking u and releasing thethread uri:*'.f -.ingt the oscil jationrof-said take-up'member; 9: Afsewingmachine includin Qin combi nation, a y looper-supporting shai t, I mounted. thereon, by. said looper supporting shaft, lsaid meme 1B,. a take-up member carried 1: comprlsingan overhanging ,having fazthread-e aglngcam'projeeting therefrom thread 'gui as between awhichfgsaidj:take=u1i device between? said ta'ke-up -member an the su -trolle a fjwpm and a cam pro- 'billlltlOIl, a lo'oper-supportmg shaft, a looper mounted thereon, a take-up member carried by said 1001 ear-supporting shaft, said memarm having shaft, thread er, said I cut away portion in-Q 1y, said clampingdevi'ce "being con: f

the movements'of the looper shaft,

10. sewing machine 'incl-uding in com-eber comprising anoverhanging a thread-en gaging-cam prqefetin therefrom, thread' guides between which said -takeup me! iber operates, a thread-clamping device bi tween said take-up member and the supply, and a cam carried by thelooper "shaft for'causing the "clamping device to.

clamp the It oper thread.

11. A sewing machine includi mounted thereon, a take-up member carried her comprising overhangingarm having" "there-Q from, threadflguide'sbetweenwh ch. i,;said a wake-up mejm ber'operatega thread clamping,

looper' three 1, and means; carried by the looper shaft .for' engaging and separating lthe sclamping members ofthe clamping fdevice. a. 12. Asewi'tig machine including in-co mbi F nation, 'a 100 o'eresupporting shaft, a 1o0per,f

device "betwi :eri I sa d -:'take up; vmember, and the supply, a cam carried by the loo ershaft for 'causingt ie-clamping'device to 0 amp the athread-con trolling device; for 'the looper thread comprising atake-up, and threadincombination, a 10 per-support1ng sha t, a looper' so by said loop er supporting shaft, said mam-m clampin members, a foam carried ,bythe Y lo'oper: s aft for causing said memberst clamp the tl read when the shaft. is oscil- 1 ,lated, and a nember carried by saidllooper 14. A three d clamp leased, and a second cam for positively.

forming mechanism including saidmembers,

rating said members to release the thread; I. -v-

15. In a sewing machine, having stitch 1 w an oscillating and recifirocating looper shaft," a take-up member I the looper sh aft, thread guides, a bracket supportlng the same, said take-up member havingfan ove rhanging portion formed with aving a shankportion secured to a concentric-u pper, surface located and movirig close to. the"=bracket-supporting the oscillation: of the takempmember;

'threadguides andz'hav'ingia concentn un-Q I flderj mass-i: vhich-gfretains the ,thread n 3?; .1 I xg ep ri' e e :5 7 ek me e a 2 sw ng a" r)'iect ing;cam-"slirfacefl which takesu'p an ieleases'thethread'dliringeach .J ,16.=Asewing1machine -inc1u5ling .combi- 4.,9-

nation a standard, a cylindrical work support extending from said standard, a looper shaft mounted in said work support, a looper operated by said shaft, means for oscillating said looper shaft, and a looper thread controlling mechanism located in said work support, said mechanism including an oscil-- lating member mounted on and movable with said looper shaft, and thread guides for holding the looper thread in operative engagement with said oscillating member.

17. A sewin' machine including in combinationa' stan ard, a cylindrical work support extending from said standard, a looper Shaft mounted in said work support, a looper operated by said shaft,'means for oscillating said loopershaft, and a lqopen trolling mechanism located in said work support, said mechanism. including an oscillating member mounted on and movable with said looper shaft, and thread guides for holding the looper thread in operative engagement with said oscillating member, said oscillating member having a cam shaped thread engaging surface which takes up and releases, thread during the said member in each direction.

In testimony whereof I affix my signature,

' in presence of two witnesses.

- DUDLEY s. SEYMOUR.

Witnesses C. MONEIL, A IB. Cm'rnmn.

movement of

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