US1080729A - Buttonhole-working attachment for sewing-machines. - Google Patents

Description

P. SPAULDING.

BUTTONHOLE WORKING ATTACHMENT PQR SEWING MACHINES.

APPLICATION FILED APRS, 1913.

Jlmag mam ma. Q, 1913.

2 SHEETSSHEET l.

FK SPAULDING.

BUTTQNHOLB WORKING ATTACHMENT POR SEWING MACHINES.

APPLICATION FILED APR.5, 1913.

l ,@@?29 Patente Dec. 9, 1913.

2 SHEETSSHBBT 2.

FEQQL.

I by the operator.

Vmeans for translating the movement oi the vde v ioe.

`ded and more edeotive means for accelerat- 4tribute to simplicity, as-vvill be understood .FRANKLIN SPAULDING,

oneven v0l? CHICAGO, ILLINOIS.

Epeeilioa'tion of Letters Patent.

Ap'plicatien filed April 5, 195.3.

Patented Bec. 9, 1913.A

Serial No. '159,055.

To all whom if may concern Be it known that L'FRANKLIN SPAUL- nino, a citizen of the United States, resid-I ing :it Chicago. in the county of Cook andj Stute or" illinois. have invented certain new; und nse'fui improvements in Buttonholel Working Attachments 'for Sewing Ma-j chines. of which the following is si specifi-j eration. 5

ll-his invention relates to device adapt-edi vto be attached toany of the Well Ilnioivn I. l domestic sowing machines and arranged to automatically work buttonholes oi venous sizes without any lnenipulation or tne'oloth Ylie objects of the invention, generally ated. 'to provide on at taehinent in which l of the 'nnetions to produce a neet and secure huttoni'ioie eccomlisiied .hy the fewest possible nunil er oit lemen-is. v

y@ne olf the objects of the invention, started more peiwioularly, is vto provide .improved pivoted actuating lever to the friction clutch Another object is to provide improved means for regulating or adjusting theglength of the buttonhole to he formed.` f

A further object in to provide a simplithe movement of `the driving Wheel I'for the feederplate yfor the purpose of maur Another object is to provide animprover clutch device vwhich includes. a driving clutch and a retaming or backlash-preventingr4 clutch.

The invention also relates to an improved means for oscillating the oloth feeder plate, for guiding plate, and igor- 'switching sind pluto :it the ends ofthe huttonhole.

.The invention ,further contemplates the other detailsy .of construction which con- ;isfthe description prooeecs. I.

gn the aeoompzinying d avi/ings, Figure 1' is' a top plan view 'of nh huttonholeivvorling nttaclnnent embodying the features of my invention. y Fig. Q is n bottomiplan view of the attachment compl-ete. 3 is bot-tom plan view with the cloth feeder plete and .its rctainin late removed. Fie 451s e.

Fig. l. Fig. 5 is a horizontal sectional detuilnfiew illustrating the means for accelerating ythe movement of the clutch Wheel which :rtuates the cloth feeder plate.l Fig. 6 is a fragmental detail fplan view of said clutch wheel with the top plte thereof lreinoveih seid vieu7 illustrating the retain' ingy or backlash-preventing portion of the clutch.. i

The attachment in the preferred form, which l linvV` herein shown, comprises a Abase plate 10 upon which are mounted the various mechanisms o'f the attachment. A standard 11 rises iiom one end of the base plate and has at its upper` end aolamp or ,yoke

side elevation taken from the top side of' 12 adapted to embrace the vpresser-bar of i the sewing machine after the' presser-foot has been removed. A. screw 13, threaded in the yoke 12, is adapted to rigidly secure the attachment to the presser-bar. i

rlivo lD-shaped plates 14 and 15 (Fig. 3.)

are kpvoted byl suitable pivot screwsl and 17 to the underside of .the `base plate -10.

Said plates have centralopenings 18 and -19 adapted to receive cams to Vhe ,later -described'. The plates further have Slotsf() and 21 therein, the side edgesofwhichare v screws 24 and 25' Project, the headso said screws forming-.guides to directtherecipr cation ,of the feeder plate.'l In the .present instance, this plate `is provided AWith a central elongated opening 30, and the lplate 1is.

held in place by meansvo o spring-retaining Tplete 31 overlapping theed l opening, 30 .and securedfto the ase late 'llie spring plete 31 has a tongue 32 whieh passes through .the opening 30 andhear's .the plates y14 and'l, Saidoloth feeder 'glaive'`` ihaving a longitudinal vslot 29 intowhichthe es oidos 10115 10 by means of the pivot screws 15 an `17.

agninstihe oscillating cam, to be presently described, forv the vpurpose vof preventing movement of said com through momentum.l

erplat'e 28 isinounteda cloth feeder proper &nenth the forward end of the cloth feeder pinares is minted a. clothieedr element- -Y proper; said cloth toeder having a plu- .11o

engage the vieil) will mme- 'willi l u H u.) le leimm the needle n .i A Central slet Nmlgh wlw .me reeipie iwted muy n? Iier, linee. pluie P s: nalen il? i meulj; Vl" 1 snaxelxrzf up nml la? simil', il?) e v Atftbl'y nimmitel. the niet: plete lt?,

eentizl eiwit :und

A ein tile opp. wheel ve plum f i ty idly qeif' ebelt. Between the tv t tie Clutch otlaei? eli-,tl le u pin en @weed te femm the :lily Inenn i 'remuer i'lilis and has ieted ilifz-.i'ewitli leg (il wing 62,' :intl pin Gill in i simile, relation l clutch ined. The el i flog 119e forward roiizitien ef binfla' ngninet une el i'wz'nel rotation enfls m hold elemente :fl4

de'- nmintninef.

gg 1,@ ee,

eut. ln 'this slot is adjustably mounte a nui in which ie threaded a thumb screw 69, link Z0 is .mounted at one end upon the thumb screw and is pivetally attachee. at its other end to the adjacent end of the cloth feeder pl" 28.

arm T3 is pivote@ nt one end :is at 74, apen the uppei gifle el the base plate, Suid anni having un angular upwardly extending und 75 which lie behind the feeding clutch K The arm has: rounded projection #u Central shaft 52 of the clutch wheel @am plrte i' lies two ni'imte portions; portions, as illnetrzited in The engulev end 75 ie backward movement non the lov'veil end oi the sli-att 52 el' `the wheel 1S, tix il switch emn i* y n Within the central opening in the nivetec plete l5, and nets te qweklj switli the Cloth feeder 'plate :it the ends et' the bi'sttenli-le.

The operation ef' the ettaelniient :is follows: Recipio 'etien ef the needle bei' in the sewing machine Qseiletes the levei1 l() and the segmental plate The ossi" ating movement et the plate l2 is een'nnm cated, to the-pivot fil/mit 43 in the form of intei'1nit- 'tent partial rotatie/ns thi-@ugh Athe medium ef the pawl Manel the inteliet Wheel 45. As tile cum 49, "which is fixed to the lower enfl ett" the pivot piu 43 rotates, it engages the i :ills of the opening 18 in the plate lfl and oecillntes seid plate beek and forth. This oevilletien of the plate will he communicated to the elotl` :eefler plate 28 by the gagement of screw 24 'with the Wells et the guide slot in seid feeder plate. Tlf-:S the Cloth gripper will move the cloth nel eith in a manner to cause Zig-zag; ttonliole stitcliee to be formed therein, ,i length of oscillation et' the lotli 'feeder plete enel thus the length of eall stitch may be cent-felled by adjusting the seiew 24 longitudinally in its elet :20. 'ln the oscillation of the toothed plate @l2 the screw F6 Will lie carried into intermittent enn gageme'nt with elle feeding clutch (leg 55 te rotate the ClutchA Wheel 5l thi'eugli intel`- mitteilt partial rotations. Motion from the Glutei). Wheel will be imparted te the cloth feeder-plate 28 'through the medium of the linli 70 in the form of step-by-step advzur ing nievetfients to emxy the cloth past the needle el the sewing machine the entire of the liuttenliole.

'llie lengtlief each step imperte, te lise eletti l e, tiieret re tlie f istfmee between. e i. elles, may controlled by ufffm the screw te advance itsl fern/eral enel, :t ing lentement will given te 5S in its seat. By tuiw ELT:

5 lln a louttonliolewokinfg attachment, a oase plate7 an oscillatory plate pivoted to the un ide el said bese plate and having an opening therein zt cam fitting in seid opening., means for driving Said cuni, e, cloth feeder plate mounted for traveling movement beneath seid oscillatory plete, said oscillatory plate and said feeder plate lim/- ing lengitudinul .slots 'therein extending in the suine general direction, the elet irt seid oscillatory plate having undefent side walls, :t block in the latter slot engaging said side walls, and :l screw lzliieecled in seid bleek and adapted to secure said bleek in place, Seid Screw pi'ojeeting into the slet in seid feeder plate for eoimnnnienting motion 'tile-reto.

G. ln e buttnnhole wol-lling attachment, a plete, two oscillatory plaies 'inflenendently pivelecl to the underside O lease plate end each having a central opening 2o therein, an oscillating cam tting'in one of seid openings, a switch cam' tting in the other opening, a Isloth feeder plate mounted for traveling movement beneath said oscilln'toiy plates, said oscillatory plates and said feeder plate having slots therein extending in the saine general direction, a pair of studs eaeh ndjustably mounted in the slot in one of said oscillatory plates andlvprojeet'ng into the slot in the feeder plate, and means for driving said switch cam and said oscillating cani,

ln testimony whereof eflix my signature in the presence of two witnesses. H

FRANKLlN SPAULDING.

'Vlfit nzses: ,Y

en MARQUARDT, ltfri KAFEA.

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