US1085786A - Button-sewing machine. - Google Patents

Description

W. L. BARRON. BUT-TON SEWING MACHINE.

APPLICATION FILED APR. 12, 1912. 1 085,786 Patented Feb, 3, 1914 gamma-sum 1.

IN VEIV TOR Mai/9M ,4 TTORNEY W. L. BARRON.- BUTTON SEWING MACH APPL-IOATION FILED APR.12, 1912.

INE.

- Patented Eeb. 3,1914;-

2 SHEETS-SHEET 2.

" WITNESSES:

' INVENTOR ATTORNEY ran cur os.

WILLIAM L. BARRON, on NEW YORK, N. Y AssIon'on r THE smear. MANUFAC- roams com any, a conroaarrou on NEW JERSEY.

BUTTON-SEWING Mannin -s.

Specification of Letters Patent.

Patented Feb. 3, 1914.

Application filed April 12, 1912. Serial-N0. 690,412.

Sewing Machines, of which the following is; a specification, reference being had therein to the accompanying drawings.

This invention has for its primary object to provide a button-holder for the easy introduction and removal of the so-called self-shank buttons or .those formed at the back with a projection or protuberanceintegral with the body of the button to re;

' perspective view of the button-holder,

pre sser-foot-and work-support. Fig. dis a ceive the fastening stitches.

As preferably constructed, the buttonholder is secured to a spring-pressed presserbar of a sewing machine and comprises two gripping-jaw carrying levers connected to gether for reciprocal movement and nor mally forced toward each other by a con tinuously acting spring and by an intermit-i tingly acting spring whose action is de-,'

signed to be interrupted by the lifting of the button-holder for introduction and removal of the buttons. The button gripping jaws for buttons of various patterns, are located uniformly in relation to the needle-path.

a raised work-support at one side of which the button-holder is disposed, and upon the top of which normally rests the presser-foot which is mounted upon a spring-pressed presser-bar journaled in the machine-frame independently of the bar to which the but ton-holder is attached. A common lifter is arranged for successive engagement with the two pressenbars so as to lift first the button-holder and then the presserfoot.

By the means just described, the posit-ion of the. button-holder relative to the worksupport may be adjusted for the largest sized buttons for which it is adapted, and the attachment is thus adaptedfor attaching the buttons to fabrics of very widely varying thicknesses, the lift of the buttontons forced by the inclination of the jaws toward the same, whereby the rearward faces of the buttons having the shanks, 1

' holder not being dependent in any degree upon the thickness of the material and requiring norchange for variations in thickness of the material to which the buttons are attached. This is true particularly because the button performs no function in the holding of the material, and is automatically centered at the same level within the grip ping jaws by reason of the. concavity of the latter upon their common axis transverse to the needle-path.

In the accompanying drawings, Figure 1 is a side elevation and Fig. 2 2. front end elevation of a button sewing machine embodying the present invention. Fig. 3 is a perspective view of the stop device for the jawcarrying levers, and Fig. a similar view of the'work-support. Fig. 6 is a detail transverse section of the presser-bar lifting lever and a. portion of the sewing machine frame. Fig. 7 is a side elevation of the attachmenhand Figs. 8 and 9 are respectively, top and bottom views of the buttonholder. Fig. is an end view ofthe jawcarrying levers with the gripping jaws in face view and Fig. 1f an enlarged transverse sectional view of the gripping jaws with a button held therein. Fig. 12 is a perspective view of the frame member containing the slideway for the resser-foot carrying bar.

The machine is shown constructed with a frame comprising the hollow standard 1 with the lateral work-sustaining arm or j horn 2 and the hollow overhanging arm 3 in The machine is preferably provided with which latter is journaled the main-shaft 4 carrying at its rearward end the fast and loose pulleys 5 and 6 and at the forward end the take-up cam-cylinder 7 provided wlth the crank-pin 8 connected by means of the pitman 9 with the usual stud upon the collar 10 fixed upon the needle-bar 11 which carries the eyepointed needle 12. The reciprocating needle-bar 11 is journaled in the swinging frame 13 fulcrumed within the head of thebracket-a-rm and provided with a lateral arm ltoperatively connected by suitable means, including the link 15, with the groove 16 of the cam-cylinder 17 deriving step-by-step rotary movements from a suitable connection with the main-shaft 4.

Cooperating with the needle 12'is the oscilla'ting shuttle 18 journaled in the race 19 and provided with shuttle is actuated 1, 3 at the forward end o inonnted within tho horn its r iarward end the cranl; a manner well know! by me e i A and nitnaan 25 h 526 of. tlic znain-slnrlit.

Upon the ontsr sustaining arm 2 is secure z 7 entering; apertures thoroi tnroat- Plato Qt) which i'orincn with rifls 1 support adjacent which doc with m hutto 31. "The work-guidiing lip riso of the support 30, whica is n -d "rans- Yorsoly to root-1m ti o hlocl: 33

secured oil": is soren'v inn arni if. having a lateral lug :t'or cng-l iuniont by the forward tho hitting; levor inountcd upon his rnlcrum :svl'Ol'V-sifld 4-5 sustained by iho brains, and liming a roarn'ardly (,Xifilltll'iig arzn 46 with n'oral inn is? which carries a stop-screw d8 1 d from l-nrniug hy the icoli-nu'b 49 and 1 point normally resting; upon tho lr ot the hi-aolzshin 3 as represented and 3. 'lho ti'unvt' i of the screw for limit;-

; lh a rockin l:

is is to ail'ord an adjustable Dig the doscondinn' lllOYQlilQllt o h-wr "liit; under tho action of I 11.. 7O surrounding rim 1) isscr-l and iniorposod laelwcnn the (collar 39 and too up"? hearing oi (hrhar 3.

h vcnrod to tho lower cud haimy incans oi the screw 5 i.

' latorally 07" nni pa lap-nus h 'istahly in tho opoativo no r w a rd crunnwl (ho aw-carrying lovers each nrovidcul with a down-turned extension (51' allordinga hutton-nipping jaw. The lovers 55) and 6d are "formed adjaccnt ihoir fulcranzcd ends with tho iniorinoshing toothed sectors (32 by i'icans f which they are oausod to move toward mi from :h othor lGQlSJlUCtlllIV, being drz'iwn lADQQtllQl hy moans of tho continuously a :ting springs (33 connected at opposite onds hy moons of the screws G l with the levers 59 and. 60. The

formed with ccncaved conical gripping surhaiing a common axis of curvatur ansvorso to noodlogath in the plane 0' i and ssc'ncd to the forward faces faces i at ooposito sides of tho needlepath and at the edges having the larger ciumrtuiz h c the button-confining plates (35 which arosocursd thereto in slightly inclined relation as represented in Fig. 11, By

moans o" the screws 66, so that their edges (Win-hang to atlord sustaining lips for the adjacol'it margins of the button thrust against tho same by the flaring operative faces of the jaws. Tin plates are preferably inclined forwardly so as to provide for buttons inning curved hacks or rearward faces.

Secured upon the top of the holder-plate 57 intorinodiats the stud-screws by means of the screw ()7 and Washcr 68 is the angular portion 69 of a: yoke-shaped spring formed with the spaced arms 70 and 71 extending torwardl and each resting against the outer odgc of one of two independent slide-bars T2 journalod in alinod ira isvorso slidoways in tho upwardly extending lugs 73 of the lranw-plato 5 and l ai ing inwardly extendin; portions T l normally rosiing upon the outer od 'os 0t tho lovers and (30. The spri 1. 7G and 71 act upon the arms 59 and {1%) on 'h their respective slido-hars 752 to ap y an additional clamping pressure to the butt. tho holding; of me button ilrinly during the stitching opu'alioin The adjacent upper cornors of the slide-bars 72 are rounded to rci-oiro tho wodgoshapod lower oxtrmnity 75 of a rigid retracting arm or rotractor '76 having a foot 77 fori'ncd with an aporturo to rocoivo a fastening screw-stud '79 with damp-nut S0 for scouring said arm in posh Lion. When the pressor-har 37 lOWQIOCh as represented in Fig. i, the slido-l'iars 72 disengaged from the wedgoshapcd extremity oi the arm 76, but when the PFBSSOf-bfll? and button-holder are liftcd, the slhls-hars aro brought into engagement with tho and forced apart represented in thereby relieving the jaw-carrying; and (50 of the pressure of the spring and. 71 and per1nittin; them to grip tho opposite edges oi? the button inerel in l ig 'hi; action of the primary spring 3, so that after a stitchiin;- operation the bution may be easily replaced by a new one.

l HlCl'HlIltKl UPON a screw-stud S1 depending from the holder-plate 57 is an anglelcrcr formed with arms 82 and 83, the latfor oi which carries a fulcrum screw-pin 8i onihracrd by one apertured (ind of a link 85 whose other end has an elongated aperture 1% loosely embracing the studpin HT upon the lower side of the jaw-carrying lover 5f). 'ihoend of the other arm 82 of the angle oirgripping aws to insure lever has a boss 88 provided with :1. thread ed aperture'to receive the shank 89 of a clamp-screw passing through a slot 99' in a lateral extension 91 of the holder-plate 57 and provided with a head 92 by means 'of which the angle-lever may beset in difbutton between said jaws forces them apartslightly, but less than the range of movement permitted by the length of the aperture 86 of the link 85, thus providing for the free opening and closing of the jaws within narrow limits. To accommodate a button of different size, it is merely necessary to suitably shift the angle-lever .82 83, which changes the range of movement and working positions of the jaw-carrying levers while maintaining the same restriction of their degree of opening and closing movement. In practice, the jaw 61 of the lever 60 is made shorter than that of the other lever to facilitate the edgewise withdrawal of a button stitched tothe fabric after the lifting of the button-holder.

Opposed to the upper operative face of the work-support 30 isithe presser-foot 93 f formed in one edge "adjacent the buttonholding jaws with the needle-aperture 94 and having its shank in the form of a bar 95 having a laterally extending arched upper end 96 and fitted within a vertical guideway 97 of the depending rigid arm 98 and;

having an aperture 99 entered by a screw 100 by means of which it is secured to the lower end of the bracket-arm head. The

bar 95 is normally pressed downwardly by means of a spring 101 secured at one end by means of the screw 102 to the lower end of the bracket-arm head with its other exftremity resting upon a stud-pin 103 tapped into the bar 95 and passing through a slot 104 in the arm 98 in which the bar 95 is confined by means of the cap-plate 105 secured thereon by screws 106.

The extremity of the arched upper portion 96 ofthe presser-bar 95 is adapted for engagement with a laterally extending lug 107 of the collar 39, but is in practice disposed more or less above said lug, depending 'upon the size of the button for which the holder .is set, so that the tilting of the l1ft-- ing lever 44 46 causes the successive raising of the button-holder and presser-foot differentially, their respective lifting movements being determined by the size of the button and the thickness of the material interposed axial line,

tially the level of the upper face of the.

work-support 30. As each of these jaws is inclined divergently from their gommon' axis, it will be observed that through the combined action of the jaw-closing springs 63 and 69, 70, 71 upon the levers 59 and 60,

the opposite edges of the button are gripped I at the points of tangency andon the said whereby all symmetrically formed buttons will have their shanks presented, not only centrally of the plane of movement of the jogging needle but at substantially' the same level and within the cavity 36. It is obvious'that the terms conical and curved as employed herein relatively to the button-gripping jaws, has.. reference tothe divergent inclination of the parts thereof determining the level at which the button is held. and are to be understood 1n reference to. function of this feature .rather than tomere geometrical shape.

' In the use of the machine fitted with the present mprovement, the rock-lever 44 46 is first tilted to raise the button-holder and presser-foot, thereby retracting the springarms 70 and 71 and permitting the oper 'ation only-0f the light spring 63 upon the gripping jaws 61. A button 6 if? then pressed inwardly from the rear, the laws be ing wedged apart by the rounded edge of the buttonand then closing in to grip the button as the rim of the latter comes in contact with the retaining plates 65 against which it is pressed by the flaring form of the surfaces 61 as represented particularly in Fig. 11. The button-shank b is thus caused to enter the cavity 36 of the block 33 with its transverse aperture within the range of movement of the needle upon one of its strokes. The material m is then doubled over and introducedbetween the presser-foot 93 and the work-support 30 with its folded edge in contact with the end of the button.- shank b and-the guide-lip 32. The workholder and resser-foot are then lowered, the lower edge of the button, if a large one, entering the cavity 31 of the throat-plate 29, after which the machine is set in motion and a series of fastening stitches is applied in a manner well known. At the completion of the fastening operation, the rock-lever 44 46 is again tilted to lift the button-holder and presser-foot and the work is withdrawn toward the front of the machine after the button has been pressed downwardly to free it from the gripping jaws.

Having thus set forth the nature of the invention, what I claim herein is 1. A button-holder comprising gripping jaws. in ans including a spring for forcing said ]t1\\'. tl}')t)il a button to he gripped, and

means for reducing the gripping force upon- Said button to a predetermined nnninnun, said means con'ipletii'ig its operation without. disturbing the gripping position of said aws.

:2. A button-holder tioll'lfillfilllg gripping jaws, means for maintaining a light gripping force upon said jaws and means l'or in- :reasing the gripping force upon said jaws at predetermined periods.

I). A lmtton-hi'ilder coin ,irisingoppostal gripping jaws. a continuously acting spring;- lfor forcing said jaws toward *ach other, a second springalso adapted to force said jaws toward each other, and means for rendering inetl'ective the second-nainral spring.

4. A button-holder comprising opposed cont-.aved gripping jaws having a common axis of curvature. a continuously acting spring;- for forcing said jaws toward each other, a second spring also adapted to 'l orcc saidjaws toward each other, and means For relieving; said jaws of the action ol the sow ond-nanaed spring.

5. The combination with stitch-ionizing mechanism including: a reciprocating; needle,

oil a button-holder comprising opposed con: cared conical gripping; jaws having ttt'tiltl- X11011 axis oi" curvature and disposed in a plane substantia ly parallel with the needle path and provided with Merl-Ranging lips at the edges oi larger curvature a s1 ring for forcing 1-aid jaws toward each other, and a connection hctwecn said jaws whereby the are caused to advance and rc rede equally.

t3. h tuition-holder comprising a pair of levers itiliiiticittl l'or reciprocal movement and ea -h carrying a tuition-gripping; jaw, a spring ttr drawing said levers together, a laterally adjustable fulcrum-pin, a studpin carried h one of said lerers, and a slotted lllilt connecting said pins, one of which loosely eiuhraced hy the aperture of said lll.l and adapted to limit the lateral niorenienti ot' said lever.

'T. i laitton-holder comprising two grip ping-jaw rarrring inenihcrs connected for reciprocal movement, a spring for forcing them toward each other, a double-armed spring embracing said levers and adapted also to force them toward each o her, and. positively acting; means for spreading said springdirins to ret not them from operative relation with their respective jaw-carrying ineinhers.

8. in a, sewing machine, in combination, wo substantially parallel and independently eciprocil bars, a work-support, a buttonltiltltl secured to one of said bars and susained thereby at one side of the work-support, a presser-foot secured to the other of said bars and disposed adjacent the buttonholder and ahore the work-support, and means to." ditl'erentially lifting said ha in a sewing machine, in con'ihinatiion, two sulistantially par: llel and independently reciprocal liars, a work-support, a buttonholder secured to one of said bars and sustainrd thereby at one side of the W01 -support, a presse 'toOt secured to the other of aid hars and disposed adjacent the buttonholder and above the worlesupport, and urea H, including a common lever, adapted to successively engage said bars for ditlerentiall lii'ti said button-holder and. V])E'(SJ tl'-'l i c'.

it). in a sewing niacl'iine, the combination with a spring-pi 'sed press liar. of a hat1- ton-hohler comprising; reciprocally moving nienihers cai'ri'ingg opposed gripping a continuou acting spring acting-.upon said nieniliers to force said jaws toward each other, means li'it'illltllillg a second spring also ac ing upon said members to force said jaws toward each other, a retractor normally disengaged l'roni. said means whereby the action ii" the swond-nanied spring upon said 111G111- )ers inar le interru 'ited, and a presser-har li ter whereby said inc-ins are hrou ht; into pcrative relation with the retract on fin testinion i'rl'iereof, l. have signed 1 name to this s 'ieciiication, in the presei of two suhscrihing witnesses.

xi li ji l i i h iii L. BA RHON.

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