US932272A - Overseaming sewing-machine. - Google Patents

Description

A. GREB,

GVERSENNC: SEWING MGHNE.

APPLIOATIQN Hmm Ayn. 1s, 1907.

WITH/8859: M

@wanted Aug. 24%, w09.

IN l/E/VTOR A. GRB ovmsmmmm www@ Mmmm.

, APPLICATION FLED'APR. 13, 190'?. 955;@ 63?@ atented Mg. 24, M309.

4 SHEETS-SHEET 3.

Oi 05H5 'H5126 l5 124 ALFRED GRIEB, F ELIZABETH, NEW JERSEY,

ASSIGNOR TO THE SINGER MANFACTUING COMPANY, A CORPORATION 0F NEW JERSEY.

OVERSE All/LING SEWING-MACHINE Specification oz" Letters Patent.

Application filed April 13, 1907. Serial No. 368,035.

T o all whom it may concern:

Be it linown that l', ALFRED GRIEB, a citizen of the United States, residing at Elizabeth, in the county ol Union and State of New Jersey, have invented certain new and useful Improvements in Overseaming Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates tocertain improvements in the overseaming sewing machine forming the subject of my application Serial No. 321,952, iiled June 16, 1906, and has Afor its objects, among others, to improve the constructive features of the trame so as to permit of a more effective arrangement of the operative parts, to insure convenience in assemblage ol the latter and removal for repair or replacement, to improve the e'l'lectiveness of operation and durability of the parts subjected tothe greatest wear in operation, and to improve the general appearance and convenience of manipulation of the machine. l

In its preferred form, the machine is provided with a rectilinearly reciprocating nee- (lle and two cooperating thread-carrying loopers or tliread-carriers by which a threethread overseam is produced.

As regards certain ot its characteristic features, the present improvement is not limited to any particular type of loopers, as this will depend largely upon the hind of overseam desired, and thc terni threadcarricrs`7 as used herein is employed in its broader sense to include thread-loop handling implements of any suitable form coperat-ing` with the needle in the production of stitches.

l/Vhile the character of the tension and stitch-setting devices determines the position of interlock ol' the threads, such members are preferably designed to locate such interlorl. along the edge o1" the i'naterial inelosed by the overseain so as to provid(` a species of braid to cover sii zliextieine edge.

In the machine disclosed in my prior application, a brael.et in the forni ot' a tlat plate afl'ording the bearings for the inclined medle-bar extended forwardly lrom the back ol. the machine and carried the l'ulcrumpin for the needle-aetualing roch-lever, thc rearward endet/mich was connected with the eccentric-rod embracing an eerentric; upon thelmain-shaft. 'lhe parallel relation i ot the needle-actuating lever with the l'nii'etion.

y and its strap and harsh driving relation between the eccentricy `center ol' its length clined needle-bar,

lever and other operative parts thus made it necessary to employ a series of closely adjacent actuating eceentries upon the mainshal't for impartingthe requisite motion to such parts, and the necessary use ot an eccentric tor' imparting the requisite long throw to the needle-bar involved the employment of an eccentric of large diameter 1n conjunction with a needle-actuating lever having a relatively short arm connected with the eccentric-rod for production of such mo- This was found in practice to produce PatentedAug. 24, i909.

an excess of friction between the eccentric to involvev a somewhat rod and the needle-actuating leverwhich produced excessive wear of such parts and noise in the operation of the machine at high speeds consequent upon such wear.

By the-present improvement I have replaced the needle-bar-supporting bracket, disposed parallel with the line of feed, by an overhangm bracket-arm arranged longitudinally of t ie main-shaft and providing an inclined transverse fulcrum for a longitudinally disposed needle-bar-actuating lever, thus affording an arrangement involvin a longer lever fulcrumed substantially at the for actuation from a oint 1n the main-shaft distant from the wor -engaging members of the stitch-forming, feedlng and trimming devices. By this means I am enabled to provide a crank of small diameter upon the main-shaft having the requisite throw for imparting the re uired reciprocating movements to the nee le-bar so as to reduce to a minimum the friction of the mechanism, to provide easier and .quieter movements ol' the mechanism and to materially increase the durability of the latter. By the new location of the needle-bar-actuating lever the latter is so arranged as to permit the easy removal of the cutter and presser-loot levers, and the latter may be alsscmbled and .removed independently and without disturbing or atlectingthe other operative parts of themachine.

The upright portion of the bracket-arm is detachably secured upon the bed of the machine by screws in a Well-known manner, and its lateral portion allords a suitable support l'or the inclined needle-bar lever fulcrum-pin. The laterally. extending portion of the liracket-arm is twisted and )rovide-d with an inclined head sustaining t ie similarly i'nbetween which and one of the bearing bosses foi the vi'ul( :rixnipin of the needle-barectuating ver is interposed the forward arm of the letterheving the usual linl; connections with va collar upon the nee die-bar, whilea. renrwgtrdly exten seid iever is disposed upoirthc 'oppo of the bracket#erm` andlis'c end'ol "theA pitn f embreces the actuating A shcii This peciiliarir not er( n eretive i'nenibeji edle. mech enisin, but yprcwvides a rece/ss io `eetive end' portion of the needle-ba ing lever anfl the telre-up device of whirl same constitutes an operative member also 'its connections with the needle i c materelly' improves th ee,ppearer1ce`of the machine.

n f 1s a, front side elevation oli the machine-With front end elevetion'and 8 a pl/m pffl@ machine. Fig. 4 is a needlefbar-actuntin1r crank.y Fig. 551 tached sectional elevation repeseiiting a portionef the ieedbar7 the deed litti- V centric and intermediate condectionl ,rFigs. 6, 7 and 8 are detached views iepresenting in side elevation the needle and looper mecheroism at different ste.y es of the stitchfiorniing cycle. F ig. 9 is aC etached sectional elevetion ofoneof'th/e feed-rocker supports. 1 10 is l e perspective view oi' the trimmerguard, cord-guide and adjustable carrier-bar therefor with depending oil-guard plete, end

Fig. 11,an' end elevation of thesame. '12 is asectional elevation of the heed of the trimmer-bar, with the upper trimmer-blade, and Figs. 1.3 and 14 are pers ective views, respectively;y 0i' the upper miel-carrying blockendfit's removable gib ,rovided with the knife-channel. Fig. 15 1s a detached view, partially'in section, of thelower knifeclamping member. y Y The machine is constructed with the base L; having journaled in suitable standards the longitudinally extending main-shaft Z'sliown supported at its rearward end by a bushing 3 and provided adjacent thereto, witlanee-- die-actuating ball-crank 4. The top of the base 1 is provided with a seat to which is fit-- ted and secured by means. of screws 5 the foot 6 of a bracket-arm formed withen upright portion 7 joining the overhanging member comprising a straight. lateral portion 8 merging into an inclined portion 9 carryingr at its forward end the inclined head 10 which is rovided with bearings 11 for the similarly pointed needle 13. Y

endl

in" the accompanying drawings,` Figure 1 transverse sectionel elevation through the right-hand.` endfof the I its shank secured by Ineens of a set-scrcw 29 t Fig."

" verse bearing bosses 'Z1 of the bracket-arm 'nd hnving a rearwardly extending crankrm provided with a ball 23 embraced by /`A i ,L V

f tney upper end of a pitmen. .Z4 embracing at Aits lower end the actuating crank: e of the nnen-shaft. The ball 23 carries an axial cui-erin to 'the adige/cent end of the pitinan 24 by rn-eens of n screw 27 The 'tivo .firms '18 and 22' of the needle-bar actuating rooleiever :ininclined'plenes parallel with the latter, and are vreiieranly constructed of substantially equalenvth, and the actuating crank 4 is givm/'sucli o. throw as to communicate by movements the requisite length of strolcefofthe rmedie-bar. 'Elier needle-'threed-engaging or )rimary i'ooper'jlS is represented. herein of welrknown getarnt/with itsblade provided with threadeyes for carrying. a lower thread and having within a transverse socket of the vibrating carrier 3ft having e hub journaled upon a stud-Sliixed in a boss 32 upon the base. 1,

The primary looper thread engaging or secondary looper 33 has its blade similarly rovided with means for carrying u, second ower thread end has a. iiange 34 et the base of its shank 'fitted to andseeured by means of a screw upon e suitable sent et the'upper end of e vibrating carrier S6 having e hub in the form of s longsleeve '37 fitted upon a transverse shaft 38. and maintained from -endwise movement thereon by the abutting adjacent endsof the split busnings 39 fitted justably clampedfupon said shaft by means Vof the set-screws I11 entering said bosses.

lateral crank-arm 42 having n ball 43 em braced by the lower end of a pitrnan 44 whose opposite end embraces theball-crank carried by a coller L16 mounted u on the fcrwardend of the main-shait 2. 'lie bell 43 i's provided with an axial stud-pin L17 einbraced by a forked lug 4S secured to the pitman by means 4of the lscrew 4Q. The oarjrier 36 has a lateral arm 50 connected by means of a pivotal screw-pin 51 with one end of n link 52 whose other end is connected by means of a pivotal screvpin 53 with the shanlr. of the primary looper-carrier 30, the

connection between the rocking hub 37 and the primary ,loopcr-cerrier for giving the looper 28 its desired operative movements, kwhile the secondary looper derives its v1- and their connections with the needlefonr lie Withinthe bosses 40 `of the base 1 and ad' members S5, 5G, 51 and 52 termine a toggle v stuibnin embraced by u, forked lug' 26 sc The looper-carrier hub 37 is provided with a ,bratii'ig operative .movements from the reci;-

ng hub 37 through the latters coluicetion with the hall-crank 45 married by the mainshaft.A The lateral. arm .6() ot' the secondary 'loo er-earrieris pro\f'ided with a thread-eye 54 raving a'l'oot secured iu'positien by means of a fastening-screw 55, and the primary looper-carrier also has an open th-'rfcad-hook 56 projecting' lat orally therefrom and secured in position by means of a i'astcning-screw 57. The primary looper-thrca' a is led from the thread-supply from the rear oi' the bese l upwardly to the tension device 5H, through the guide-tuk 5) in the forward main-shalt bearing' to the thread-eye 54, andl thence through the eyes and connecting,l laroove in the blade oi1 the loo ier 2S to the work. ihe secondary looper-thread t) led from the thread supply through a `guide-eye in 'the plate 6() upon the top oi' the l'nachet-arm to the tension 61 and thence to thethrmid-hook 56 i'roIn which it is led downwardly under the stationaryT thread -gruide 6; 'and upwardlythrough the eyes and intermediate groove in 'the blade of the secondary looper to the work. l

An upper-thread take-up arm 63 provided with open guide- eyes 64 and 65 is means of screws 66 upon the needle-baractuating lever arm 1S in suoli position that itsguide-e'ye 64 is adapted to move into and' out 'of alinement with a thread-hole 67 in the projectime,` lug* of the. collar 14. The needle- 'thread cv `is led' froml the thread supply' through-the tension device 66 and the 'stationary guide-eye 6i) to the thread-hole 67, and thence to the thread-eye 64 and through a guide-eye 7() in a plate `71 adjustably secured by-means of a sere'w72 to the upper bearing 31 ofl the bracket-arm, from Iwhich guide-eye 70 '-the needle-thread leads downwardlyalong the'needle-bar and needle to the p needle-eye and devices, the needle 'descends to' itsy lowest positiomae' represented'in Figs. 1 and 6, and at* tl'i'e'beginning'o'f 'its 'return movement throws out-'the'.usual loop which -is entered. by the primary looper 28 Which rises to the osition re resented in Fie'. 7, being met at suhstantia y the level ot the throat-plate 73 by thc-.secondary louper, whose continued advance movement causes it to pass through the'primary l'ooper-lo'op, engaging. and deflectmg'. the same by its lateral shoulder 33 'and to resent its own loop ior passageof the needle in the latters succeeding descent asl represented in Fig. 8. As the th'ree thread carrying members vreturn to their' initial positions preparatory 'to repeating thedescribed operations, as represented in Figs. 1. and k6j eheh nof the loopers backs out of the re- 'speet'ive thread-loop whichit has previously 'taken-'andthe threads are drawnupeto comthence to the Work.

secured by of the loopers to the In'the operation oi the tlMead-handling;

plete the stitch by the action of the several tliread-controlling members. y f lAs indicated in dotted lines in Fig'. l, when the needle' is in its highest position, the takeup member 63 i at the end of its stitch-settine" and thread i ne' operation uponthe' needle-thread, the thread-eyes 64 and 67 benney` at their greatest distance apart. As the needle commences to descend for the production of a new stitch, the 'thread-eye 64 approaches theneedle-bar and the threadhole 67 descends for In'oducinp, a dil'l'erential thread-slackenine; action, which continues practically until the thread-eyes 64 and 67 are in substantial aline'ment in the direction of reci rocation of the needle, at which point their urther descent in respect ofthe stationary thread-'eye 70 produces' a further pull upon the needle-thread 'acting in conjunction withthe simultaneous pulls upon the looper-threads to draw u the previous stitch and properly locate the lnterlock ofthe threads preparatory to the iinal setting operation again rises to its highest position'arnl while its loop last formed is stlll around the primary looper, as represented in Fig. 8.

As shown in Figs. l and 6, the loopers are in their retracted positions', and their threadcontrolling members 54 and 56 arein their extreme operative p ositio'ns.y fordraxtrin'g lup As the loopersapltheir respective threads, l preach one anotherto thepositions represented in Fig. 7 their respective thread-controlling inemberseaeh mounted upon the 'carrier of the other, approach the thread'- guidingl eyes ail'o'rded by the members and' 62, rcspee `ivel'y', so as to give up the necessr? slack to prevent disarrangement of the seam, While maintaining" their threads under substantial control. 'l `he furthermovement other extreme position represented in ig. 8 causes the straightening 'of the toggle's 50, 51, 52, and consequent dwell of th-e primary looper 28`while the secondary looper continues its advancefor pre entation oi its thread yto the needle, Iits thread-engaging shoulder 33X in such move-y ment catching the looper-thread a and de- 'lleeting it so as to take up the slack which would otherwise be produced by the continued movement of the controlling member 54 with the carrier 36 during the dwell of the loop'er 28. As the secondary looper reaches this extreme position its more rapid movementthan that ofthe controlling member 56 )reduces the tightening of the,l secondary Ilooper-tl'nea'd. b which' acts, in conjunction Wi'th the simultaner'iusly tightened needle-thread and primary looper-thread toy 'complete'v the positioning of the component members of the stitch in process of formation simultaneously with the setting of the stitch previously formed as before described. has been found'in practice` that''vlien which is performed as the needle- 'roo its

i'io

` stitches, end for this reason the second "enisin comprises e leed-dog 7/1 upon the teodthe machine is provided with two needletnreeds carried by it single needle, tekenp action is required in 'the production of the beri' provided-with the usual linlr't einbracing the leed-eccentric 7'7- upon the ineinshatt 2 and having its roer end pivotelly connected with upright erins 73 carried by the t'eed-ectueting rockinfrsleeve 70 Ylimited upon the stationery longitudinal shalt 30 `and mainte-ined from cndwise movement tliiereon bythe abutting adjacent ein of the split bushings 31 Fitted within the bearing 32 of the bese 1 endedinstnbly clamped Upon said shalt by ineens of the setscrevs 33 entering-seid bearing bosses, es shown speeilieelly in Fig. 0.

The rocking sleeve 79 is provided with n lateral erin 34 connected with the upper end olf n link 35 whose lower end is edjustel'ily secured by means of o bolt 86 with the slotted segmento-l erin S7 of e rocker pivotelly mounted upon e. 'fixed tnlcrnni-pin 3S and hsving second erm 39 whose extremity is pivoteily connected by ineens of e, pin 00 with one end oi en eccentric-rod 01. having et its opposite end n strep einbrzicnigii the feed-actuating; eccentric 02 upon the mein-- shaft 2 adjacent the needle-actuating crenlr. 'lihe link carries en upwardly projecting pointer-erm 03 extendingl into proximity end cooperating with the grednnted segment-bnr 04 which is secured upon the work-plete et the machine. 4

The length ot' the feedingy movement is obviously determined by the ndinslinent of the llower end of the link in the slotted segmental-erin S7, end such link may be setto produce the desired length ol stitch by bringing the pointer i Il to the proper lirrznhnition upon the segment-bnr 04 when .the linlcglf is in rar-diei relation with the.` segmental erin 37.

'lhe freine of the machine is .provided with en upright bearing plete 95. carrying the littoral fnlcrnin-sttnl 06 embrnccd by the bose 07 oi' the presser-ber 98 having secured to e suitable transverse seat et its forward end by ineens' of e fastening-screw 00 the shank of the presser-foot 100 heviniy the npturned forward portion 101, and eving a sole portion normally pressed upon the throat-plete by ineens of the ressure-s'Jrintbr 102 interposed between o. s oulder o' the presser-ber and the end of en adjusting screw 103 entering e socket in the heed of the brochet-erm, in e. well-linown menner. The usuel lifting coin-lever 1 0/l is mounted upon the looming-plate f* nien/:es of 'the pirotel pin 105 end is adapted to engage the eccentric heed of :t screw-stud 106 carried by the presser-bnr 03 end provided with the locknnt 107.

The trimming in clizniism comprises 'enf upper reciprocating knife 103 and lower stetionnry-linifc 100. The knife 10S is eerrlcd et the forward end of ii. vibrating ber 110 .vhich is piyoted et the. opposite end u pon a fixed lnlcrnm-pin 111 carried by Elie bezwingplote 05 and is pivotnlly connected intermediate its ends by e bolt 1 12 with the upper end ol en eccentric-rod 11.3` whose lower end is provided with e strep '1l/l embracing the triinmer-ectneting eccentric upon theineinshait. The forward end of the trimmer-bar 110 is forked to forni e, 'finir ol spaced. bee-ring members 115 to which is ttcd. e, tubular linile-cei-rying sheftvll having et one end e heed 117 Vprovided with a. dienietrieel cliennel in which is removably 4ittede gib 118 having` e lr'ingitnilinel groove or channel 119 to which tholkniiie-blede 103 is fitted. `The channel in the heed 117 is closedby Ineens of e' carp-piece 120 secured thereto by screws 120X andthe point of e long clamping screw 121 entering the tnbuler shaft 116, by engaging the beck of the gib 118, serves to clamp the with the blade 108 in position within the heed 117. y

The knife-shaft 11G is provided interme-v diate its bearings with e collnr122 havin n bifnrcnted leterel lug 123 embracing e guidebirr 121i secured to end extending between the bearing members 115, such coller being edjnstebly secured upon the knife-shaft by ineens of n set-screw 125, sind a spring 126 is interposed between the coller 122 end one of the loeerinzgr members 115 whereby the upper knifey 103 is pressed normally in contact with the lower knife 109.

rlhe lower knife-binde v100 is shown fitted to en inclined channel in e carrier-block 127 and clamped thereon by engagement therel with of the laterally notched heed 128 of the pin or plug 120 passing,` through such block und having upon its threaded opposite end. portion e milled clamping .nnt 130 by which the heed 123 is drown into operative engagement with the binde 100 entering its notch. The carrier-block 127 is mounted in rsuitable guide-ways of the freine, and is provided with logs 131 heving adjustable stop-screws 132 whose pointsnre :Ldnpted to beer-elternetely upon s laterally projecting portion 133 ot' the mainframe to limit the movement. of such block Lend knife carried thereby transversely of the direction of feed. The adjustment of this knife-carrying :block is etlected by ineens of a screw 134 tripped into the member 133 ol' the machine. freine and having e swivel. connection with a. slotted lug 135 of' the block 127,`nnd it iney'be securely clamped in any position of adjustment by meansV of the fastening screw 127X passing 'in Fig'. 11.

esame) through a slot 133 in the member 133 of the machine frame and entering the block 127.

As will be readily understood, the shifting' of the working position of the stationary knife 109 produces a corresponding lateral movement of the recipiioeating knife 108 which follows the same undei' the.) ielding; action of the spring 126.

The carrier-block is provided with a. needleguiding plate 136 liavingr an upper edge slightly inclined to the needle-path to insure against the deflection of the needle into the looper-path and the consequent breal'tii'ig of the needle.

The side of /tlie base 1 adjacent the foot 6 of the bracket-arm is provided with a longitudinal seat to which is fitted the shank 137 of a bracket member provided with a longitudinal slot 13S entered by the shank of a fastening-screw 139 tapped into the base and adapted to secure suoli bracl-:et-'piece adjustably thereon. To the forward end of said bracket-piece is attached by means of screws 140 the foot 141 of an angular shieldplate having an upturned flange 142 inclined at an angle similar to that of the for- 'ward portion 101 of the presser-foot, and having,r its end disposed close to the upper trimmer-knife 108 whereby it 'is adapted to strip the trimmings from the body of the fabric whose edge is to be provided with the overseam. liy loosening the fasteningscrcw 130, the shield-plate with the suiporting,r bracket-piece 137 may be properly adjusted when tie trimming knives are reset for different widths of overseani,

As disclosedii'i my pending application before referred to; to the forward end poi'- tion of the flange 142 of the shield-plate is fastened by means of sci'ews 143 the shank 144 of a cord-guiding member 145 which is provided upon its iniiei' side with a longitudinal coril-receiving groove 1.46, the edge ol' the nienibei' 145 being' spaced slightly from 4 5 the depending lip 143'" to aliord a longitudinal threading slit foi' the cord-guiding channel afforded by the grooved member 145 and the o )posed lip 142%, as indicated 'llie delivery end of the cordguide has a transverse notch 147 so disposed as t-o deliver the cord adjacent to and slightly below the tepel the and the member 145 is formed with a notch 148 through which the cord d is adapted to be led from the eye lll-t) of the thread-grinding plate beneath the tension device 68, the cord being' threaded through the longitudinal slit in` the guiding channel 146 and directed by the latter tio the lower edge of the material to which it is secured by the ovei'seam.

The bracket-piece 15'37 carries a depending shield-.plate 150 servinpr to shield the looperthreads from the rotating parts beneath the work-plate, and the side o t the base nearest the operator is iiiclosed by means of a re- .'flang'e havingl a slight throat-plate,A

movable (Fig. 1) receiving the fastening-screws 153v andY 154, and a thin sheet-metal door 155 forming a continuation thereof and hinged along' its lower edge t0 a plate 156 secured by screws 157 to the base-plate. The upper edge of the sheet-metal door is adapted to latch itself upon the wire fastening-pin 158 secured to the bracket-piece 1.37 by means of one of the screws 140, as representednii'i Figs. 1 and 10. A finger-piece 159 is shown applied to the cover-plate 151 for usein the looper mechanism; but it wi be observed that in thethreading of the loopei's, it Ais necessary only to open the door' 155 for access to the secondary loo er7 the primary looper being accessible, y bringing the removal of the latter for inspection of the same .into its advance position above the throat-plate, indicated in Fig. 8.

The looper-actuating mechanism is housed by means of a swinging Work-plate section plate 151 having key-hole slots 152 soA` 160 pivoted to the machine-base by a ful- Crum-screw 161 and having a depending apron 162 inclosing the looper-actuating mechanism upon three sides and provided along its lower edge with an oil-receiving flange 163 having' an upturned lip 164, this downward inclination from front to rear, soA that any oil thrown from the looper-actualing mechanis-:in will be caught in the saine and carried backwai'dly to be discharged into the channeled bed or drip-pan with which the machine is customarily provided when in opei'atioii.

By the i'oi'egoii'ig description, l have indicated the preferred construction and ai'- i'angement of the various pai'ts of the nia'- cliine, but it is to be understood that the same may be vai'ied to a' considin'able dcgi'ee without departure from the scope of the present invention. f

W hat l claim herein is 1. ln an ovei'seaniing sewing' machine, the combination with the frame, a throat-plate thereon, a shaft mounted in and arranged longitudinally of said frame, a needle reciprocating' in a path inclined in respect to said throat-plato and'in a )lane transverse to said shaft, operating mec ianisin forsaid needle com'irisiimr an actuating rock-lever extending' longitudinally in relation 'to said shaft and movable upon a fulcrum disposed in substantially perpendicular relation both to said shaft and tol the path of movement of the needle, a coi'incction between said lever and said needle., actuating means for said loyer,

and ovci'seaminpr looper mechanism ai'-Y iangred below said throat-plate and compristllroet-plete and thread-loops are presentedl .whereby threnddoops ere passed tlireugn for passage oi the needle efeove' the throatplete. l

2. .ln an overeeeining meeliine, the combination with the ironie, e throet-plete thereon, e erenlvslieit i' unt-ed in end nrre-ngedlongitudinally e frame, e needle reenroeeting in e peti; ed in reepeet to seid tin'oet-plate and in ne transverse to seid Shelli, operating ,nisin *for seid needle comprising en ee Y g roekdever ing longitudinally :in rel tion to seid l it and movable upon inl' '-nnrdieposed in eniiistentiel. perpendicular iv ion both to sind streit and to tile path of movenient ol' the needle, :i connection between eil-id lever end seid needle, :i crank-red with one end einbreeing the erzn'inr olE seid crunk-Shaft end the other end connected with sind lever, and overf- ,eining looper meeheniern arranged lie lonv seid throat-plete and een )rising two tlneed-eerriers relatively movable in perfillel planes .perpendieulfir to Seid tl'ii mtplete and inclined relatively to Seid needle-pelli, and ineens for actuating seid tlireml-eerriers loo )s of needletl'neef;l below the tliroiitlate end threeddoops nre presented for pessege ol tlie needle ele/ove the tlirrmt-pllite.

3. Yn en overseeniing sewing nnielune, the combination with the l'rinne eoinprieing' e bese portion end en everlningringi lnnelieterin, n. throat-plete mounted upon seid lies-eportion, e. tannin-sluit rnlninted in l) zn-inge in and longitudiimll" el seid inueiifnortion, n. reeijgroezrting ile lier i en eye iviointed nel e and mounted in oeeringe in Bruel? in in!" 2 in ree-,peet loeaid lute and in :i lll i trainer@ 2 to Seid f leoinbinattion with 'tlie needlednr Carrying en eye-pointed needle end lmountml in bearings in seid lnreeletl erin inclined in respect el; seid throat-nnte end lying in :i piene trnnevrn'sely. o' sind slizfr'l't, neediedmr opernting nieelllnisni eornprising e lengitmilinelly extending eeteeting roelvlev'er movable nnen e l'nlernni interrnedizrte its ends Substantially perpendicular to lille needle-path, a. eolie-r fixed to'seid needle-loer and 'provided with e thread-eye, e link connection intermediate seid Coller and forwardly projecting erm oleeid roek-le ver, e erenlerod with one end embracing the erenl of seid crank-eiwit and the other end connected 'itli n, rearwardly extending erm ol' seid roelolevei, a, thread-guiding member fixed upon the bracket-erin end lin-ving n lineari-eye adjacent said needle-ller, n. thread Controlling member carried by n. d niiovnble with seid rock-lever and provided with e, Llireedryo adapted to engage the needlethread'intermediate tire thread-eyes of seid Collin' rind fixed tlire( .aiguille mid overseezn ing leoper-nuelienisin arranged oei itlr said throat-plete anni Comprising nieuwe whereby tln'ezi'd-loope nre passed tl'irongli loops of nemlletlneztd below tlie tliroelplnte and tlirelnldoope irre presente@ jlor n v,nf-.ie el' the Lune eoiez'nlsing e baser/million end im en' rzteket Y liront-plete npr" ,udn erenkel,

seid izisr-x-ioxtion, e refinieteting lieeilledJe-r Carrying :in eyempointed needle lend mounted 'in neer-inge 1n sind nreelet erm inclined in respeet of 'sind 'diront-plete xnd lying in- :i 'plane t 'lsv li oiiseid ,ingenio-inn "pointing niet 'i eemi 'aiding actuating wie en' u lonfitudinzlllv e."

s.) Tf) u fli um inter- 'ings in seid bese portion, n reeiproeeting CAD CIK

whereby thread-loops are combination with the seaming looper-mechanism arranged beneath said throat-plate and comprising two independent thread-carriers movable in parallel planes perpendicular to said throatplate and at .an inclination to said needlepath, and me'ans for actuating said loopers passed through loops of iieedle-thread below the throatplate and thread-loops are presented for passage ofthe needle-loops above the throatplate.

6. In an overseaniing sewing machine, the combination with a -frame comprising a baseportion and an overhanging bracket-arm i'ormed with upright columnar portion and lateral overhanging member of oblong crosssection twisted intermediate its ends and formed with adjacent transverse bearing bosses and carrying at the outer end a needle-bar guiding head com rising forwardly projecting lugs i'or the need e-bar and having an inclination similar to that oi' the adjacent portion of the arm, of a needle-barjouinaled in the bearing lugs of said inclined head and having an inclination similar to that of the latter, a rock-lever, a fulcrum i'or said rocklever disposed perpendicular to said needleai' and journaled in said Vbearing bosses, a link connection intermediate an arm ol' said rock-lever and the needle-bar and disposed intermediate one oi said bearing bosses and the bearing lugs for said needle-bar, overseaining -looper mechanism mounted within said basr- -portion and com rising a pluralitjT ol' thread-carriers movable in planes substantially )arallel with the columnar portion ol' the bracket-arml and actuating mechanism 'for said thread-carriers whereby thread-loops are passed through loops of needle-thread below the Work and threadloops are presented for passage oi' the needleloops above the work in the production ol' an overseam.

7 In an overseaniing sewing machine, the throat-plate, a needle and means'for reciprocating the saine through said throat-plate` of a primary thread-carrying looper, a secondary thread-carrying looper having a lateral thread -engaging shoulder, dil'ei'entially acting thread-controlling devices each operating in conjunction with one of said loopers for controlling the thread of the other looper, and actuating means for said loopers whereby the primary looper carries loops of its thread through thread-loops presented by the needle-and "set-screws entering said bearings the secondary looper passes loops of its thread through and deflects the primarythe thread of the other looper for controlling the saine in the production of stitches.

9. In an overseaining sewing machine, the combination with the throat-plate, a needle vand means for reciprocating the saine through said throat-plate, of looper-carriers each mounted upon a fixed pivotal support, a

primary looper iixed upon one of said loopercarriers and a secondary looper removably mounted -upon the other of said loopercarriers, a thread-controller having its operative member mounted upon the secondary looper-carrier for controlling the thread of the primary looper, and a thread-controller having its operative member mounted upon the primary looper-carrier and adapted to control the thread of the secondary looper in the production of stitches.

10. In an oveiseaming sewing machine, the combination with needle and means for reciprocating the saine through said throat-plate, of looper mechanism coperatiiig with said needle in the pro.- duction of overseam stitches, and comprising a looper-carrier having a hub in the form of a sleeve, a shaft to which said sleeve is iitted, split bushings surrounding said shaft at opposite ends of said looper-carrier hub and adapted to bear upon the ends thereof,

the throat-plate, a`

iXcd bearings surrounding said sleeves, and

for engageclamp them them in posiment with the split bushings to upon said shaft and maintain tion in said bearings.

In testimony whereof, I have signed my name to this speciiication, in the presence of two subscribing witnesses.

ALFRED. GRIEB. Witnesses:A

HENRY J. MILLER, HENRYA. KORNEM'ANN.

Images