US1030589A - Buttonhole-sewing machine. - Google Patents

Description

J. KIBWIGZ. BUTTONHOLE SEWING MACHINE.

APPLICATION FILED APR.10,1911.

A msn ss I Patented June 25, 1912.

7 SHEBTSSHEET 1.

,575 MM Mk1. pm

J. KIEWIGZ.

BUTTONHOLE SEWING MACHINE.

APPLICATION FILED APILIO, 1911. I v j g g Patented June 25, 1912.

7 BHEIITS -SHEET 2.

"7 fi 3 2 M 20M J. KIEWIUZ.

BUTTONHOLYE SEWING MACHINE. APPLICATION IILEDAPR. 10, 1911.

Patented June 25, 191% 7 SHEETS-SHEET 3.

5 \QNN a v J. KIBWIOZ. BUTTONHOLE SEWING MACHINE.

APPLICATION FILED APR.10,1911.

Patented June 25, 1912.

msm m MEETS-SHEET 4.

J. KIE WIOZ. BUTTONHOLEK SEWING MACHINE. APPLICATION FILED APR.10,1911.

Eatented June 25, 1912.

7 SHEETS-SHEET 5,

4.72 ZZWAQQJQ J, KiEWIG/l BUTTONHOLE SEWING MACHINE. APPLICATION FILED APR.10,1'911.

' Patented June 25, 1912.

7 SHEET$ SHBET 6.

J. KIEWIGZ. BUTTONHOLE SEWING MACHINE. APPLICATION FILED APR410,1911.

Patented June 25, 1912.

7 SHBETSSHEBT 7.

. .50 1 115* m5 9 z .113. & 5'55 To all whom it may 6mm.- i

* Hyde Park, county of Norfolk, State of, Massachusetts, have invented an Improve- JOHN KIEWICZ, or HYDE PARK, .iviAssAcnusErrs, ASSIGNOR 'ro mason summon HOLE MACHINE COMPANY, orrosron, MASSACHUSETTS, \A conronnrron or MAINE.

BUTTONHOLE-SEWING MACHINE.

Specification of Letters men.

PatentedJune2 5,1912.

, wApplic ation-iileii'Aprfl 10,;191-1. Serial .No. eraser).

- Beit known that;I, .TOH'N Kmwfoz, a citi Zen of the United States,and resident of ment in Buttonhole sewing Machines, of

which the following description, in 'connection with the accompanyingdrawing," is a specification, like characters representing like parts. f

. This invention relates more particularlyto buttonhole sewmg .machines of the- Reece type, and it. hasfor its' object the prpduction of "a .machine of such general type embodying various novel features of construction,v and arrangement whereby the .joperation of the machine as a whole is improved, its running speed increased without objectionable vibration, and the adjustment of certain parts simplified.

IntheReece' type of buttonhole sewing machine, exemplified in United States Patent No; 349,359"dated September 21, 1886,

' and No.-655,637, dated August 7 1900, both granted to Reece, and also in the Hill Patent, ,No. 713,764, dated November 18,, 1902, the working partsof the apparatus are mounted upon a heavy and stationary base, the stitchforming instrumentality being carried by a frame which is move'dautomatica'lly upon and with relation to the stationary bed-plate in the formation of the buttonhole, the

work-clamp being held upon such bed-plate in fixed position. ()f necessity the stitchforming devices are heavy, and a strong and -massive frame is requisite for their proper support, so that the Weight of the moving parts in such a machine will be between 25 and 40 pcundsfor more, according to the size of the machine as a whole. To effect the movementof the frame and the parts carried thereby requires. a very considerable expenditure of power, and the momentum of this heavy movable mass of-I'nechani-sm'is also objectionable, for thereby the speed at which the machine can be run is limited.

This is relative, however, for as-a matterof fact these commercial machines are run ll ,a

high speed, but the demands for yet greater to beattained without detriment to the machine or to the work'produced thereby.

on the drawing 7 'It has been proposed here'tofore to re-l duce the. weight of the movingparts of a buttonhole sewing machine by mounting the stitch-forming .instrumentality on a fi xed frame, and moving the bed-plate, thus reducing somewhat. the weight to be moved and decreasing-the power required to operate t-h'e machine, but practical mechanical diificulties have more than oifset the slight advantages secured, and so far as I am aware such machines have had a very limited use.

In my present invention the bed-plate and the frame carrying .the stitch-forming i n-,

strumentality are rigidly connected and are held stationary upon the base of the ma chine, and the work-clamp alone is bodily movable, its wmovements being controlled automatically to effect the proper cooperation' of the; stitching and cutting devices therewith in the formation of a buttonhole.

By this novel arrangement and construction I reduce the weight of the bodily movable "part or parts to a minimum, whereby not only is less operating power required than heretofore but .by the minimizing of theweight the momentum of the bodily movable work-clamp ceases to .be a factor and the speed at which the machine can be run is limited only by the ability of the operator. In the machine tobe describedherein I have made use of the stitch-forming instrumentality shown in the patentsreferred to, wit-h practically the same general control of its operation, and I have herein utilized the high and' low speed mechanism shown in said patents, so that in the drawings I have illustrated the 'old-mechanisms only so far as they are necessary to-a properunderstanding of the'novel features of my invention.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Hereinafter in describing the mechanism I have applied to old-and well known parts, 'so far as possible, the reference characters employed in the prior patents above mentioned, inrorder that a clear understanding thereof may be had. I

' Figure 1 is a left-hand side elevation of a suflicient portion of a buttonholesewing ma- 3O parts which would obscure the view; Fig. -6

chine of the Reece type,'with my present in-. vention embodied ther in, the "stationary frame or head on whichthe greater portion of the stitch-forming instrumentality is mounted being br'okenfofl at the top, and the base being partly indicatedfiby dotted lines for, clearness of illustration, thevarious parts being shown in the position as- 4 sumedafter a buttonhole has been stitched and cut, with'the work-clamp open, and the -feed-shaft is shown in'section on the .line

11-, Fig. 3 Fig. 2 isa topplan view (It the bed-plate with thegreaterjpart ofthe fi ame or head omitted, the partsshown beingin the position illustrated 1 Fig. 3-is an underside view of the-bed-plateand the f mechanism mounted thereon, .mcluding'the feedmontrollingmeans, the means for. open- .ing and closing. the work-clampgautomati cally, and ap'ortiofi of the stitch-forming instrumentality; Fig.4 is a right-hand side elevation and partial longitudinal section of i p the bed-plate and some of the devices mounted thereon forcontrolling the operation of the work-clamp and the stitch-forming in strumentality, the curb or casing for the main or feed-cam being omitted; Fig.5 is

an enlarged detail in front elevation and .partial section, on the line 55, Fig. 2, of

thework-clamp and its adjuncts, omitting is an underside view, enlarged, of the movable work-clamp,to show more particularly the construction of the lower or main member of the .clamp and its detachable connec-- tion with the work-.Clampslide; Fig. 7 is an enlarged detail in side elevation of upper and lower members of the work-clamp and a portion of the devices for opening and Hand 12 are details, partly diagrammatic,

designed to illustrate more clearly the bodily v movement'of the work-clamp during the formation of a buttonhole, such movement being taken with relation to'a permanently positioned member of the stitch-forming instrumentality, and alsowith relation to the path of the needle at difierent periods in the cycle of operations by which the buttonhole is made, Fig. l3-is a top plan view of the workcla'mp slide and the controlling cams carried thereby, the main cam by which the slide is actuated being shown'- beneath it; Fig. 14 is a detail of the rear'end .of the starting lever and adjacent partsshown in Fig 3, the feed-shaft being omitted; Fig. 15 is a right hand side elevation ofjthe means for clutching and unclutching the I stitch shaft from its driving pulley.

The bed-pl a-te A pivoted at A onthe base A", (shown in dotted lines Fig. 1),.the stitch"- frame or head having afoot A seated on theibedfplate' and 'theoverhanging arm A havingbearingsfor the sh'aft'A which actuates stitchfforming mechanism comprising a needle-bar A" carrying an eye-pointed needle A 'and slidable in a gear A 'meshing vwith a sector gear A fast on the vertical rock-shaft A", maybe and are all of well known construction substantially as shown in'one or more of the patents referred to, with the important'eXcept-ion that herein the foot A of the stitch frame is rigidly secured', as by bolts 200, to the bed-plate A; The complemental parts of the stitch-forming instrumentality. located below the bedplate include an underTthread carrying nee.-

dle and a looper, (not shown herein) all sub stantially as in theReece Patent No. 655,637, said complemental partsbeing. operated by the gear 45 and sector gear A fast on .the lower end of the rock-shaft A", Figs. 1 and 3. The shaft A is rocked by its attached arm A, connected by ,link B with the-lever B fulcrumedat 13 on the curb or casing B secured to or forming a part of the bedplate A, the lever B having a roll or other follower 13 'cotiperating with the groove B in the main cam Bf within the casing, see Fig. 3, all substantially as in Patent No. 655,637. Inasmuch as the stitchforming construction and mode of operation of the stltch-formlng lnstrument-alltylnvolve no novel features so far as my present lnvenv instrumentality herein has no bodily movement relatively to the bed-plate -A it is to, that-extent dissimilar to the structure disclosed in said'patent, butthe specific tion is concerned and require no further de- B sustained in bearings in the rearward ex--.

vscription or illustration; Saidcam B has l usual peripheral worm-teeth to be' engaged tension B 'of the curb, and the upper side of the cam in practice has a suitable projection 57 'to a'ctuate'the buttonhole cutter at the proper. time, the only part ofthe cutterherein shown being indicated at, G

Fig. l, the cutting mechanismbeing fully shown in the patent last referred to. A pros 'jection B61011 the underside of the cam intermittingly engages a roll B on the clamp- 7 closing lever B and depresses the lever ates certain stitch-forming mechanism in well known manner, is operatively connected with the feed-shaft B? by means sub stantially such as shown in the Hill patent,

such'means including an eccentric C, (see dottedlines Fig. 4) cooperating arm C to rock the'upright lever G a shiftable fulcrum stud (3 9* for said lever, and a clutch device G connectedwith and rotating the any. the

referred to is shown in Fig.

ating to siitchtliebutt liolei The fulcrum stud C scarrie 7 rear end pf theleVer-J-D,pivoted ooncentrierockeshaft a I on the 7 bearing callyi with th hub Qasinfthe Hill patent, the front'end of theleverflparrying a roll 8*, ;Fig. -15,Z-

which cooperates with astitch-controlling cam to be'r'eferredto hereinafter.

Referring to Fig. '15, .thewcluteh-do ac-.

' tu'ating lever'a fast on the right han end of rock-shaft a, the spring-controlled stop-- lug a slidable in thelev'er aQ'the depending arm'a fa'st on the opposite end of said 'rock-, shaft, to at times actuate 'the three arlne'd lever 01, pivoted ata on the underside of the bed-plate, the finger a on said lever,

cooperating withgthe grooved hub a of the continuously driven pulley e rotatably mounted on the feed-shaft B and the lugs c, 0 carried by said shaft and pulley,

respectively, to'couple or connect said parts the-bed-plate has a large cent-rally disposed when the feed-shaft is to be driven atthe higher speed, are. and may be all substantially as in theHill patent. It will be understood that when the buttonhole'isbeing stitched the feed-shaft B is rotated intermittingly 'at the lower speed by its connec tion with the stitch-shaft A", but when-the work-clamp is movedtoward or away from thestitching positionthe said feed-shaft will be "operatively connected with and driven at the higher speed by means of the pulley a with which said shaft is then clutched.

Before describing the novel features of the machine the cycle of operations involved I in making a buttonhole will be-set forth,

starting with the work in the open-workclamp and with the parts in the position shown. in Fig. 1. 9

The operatordepresses the starting lever a and thereby the feed-shaft B is set into operation at the higher speed, the clamp being. elosedimmediately upon the work,

whereupon the work-clamp is moved for wardbodily from the cutting position into' position for the stitching to begin.- When this position is reached the controlpof ithe feed-shaft-is shifted automatically from the pulley a to the pulley f then clutched to the stitch-shaft A bringing into action the stitch-forming instrumentality', and the work-clamp is'again moved forward bodily, "or to the right, Fig. 1, step by step while one side .of thebuttonholeis stitched. Theneedle-bar is now turned, as in the patents referred to, and a bodily lateral movement of the work-clamp is efiected while the eyeend of the buttonhole is stitched, and there-.

after the work-clamp is fedrearward step A portion ofthe by$st'fepI-rotation or the fe d-j stilt S" c v latter-attirerihigher speed," which causes a @rearward toplace ter G and -the cutting' mechanism is oper- Q ated-to out thestitehed buttonhole. During .shown .in Big. The r clutched from the feed-shaft just after the by step; thesecond side of the buttonf hole is s h shaft A9, and .the high-speed pulley cfutched .to the feed-shaft to rotate the rapid 'bodilymovement of the work-clamp the work beneath the cutthe cut-ting, operation the "work-clamp is held stationary, after. which an additional and final rearward. movement is given to clamp, bringing it into the position pulley (i is unclamp is opened automatically, such opening of the clamp being effected simultaviieously with the final rotativemovement of the needle-bar {to starting position for stitching, and the cycle of operations in volved in. the formation of the buttonhole is completed.

In accordance with mypresent invention longitudinal and substantially rectangular opening 12 therein, see Figs. 2 audit, extending from a point nearthe feed-shaft B well forward toward the front end of said'bed-plate. At one side of said open-' ing, at the forward end thereof, is mounted a longitudinally extended guideway 13 having a rigidly connected lateral shank 14 slidable in an opening 15, see dotted lines Fig. 3, in the depending'side rim or flange of the bed-plate, the front end of the guideway resting upon an car 16 on the underside of the bed-plate, and at-its inner end said guideway rests upon, a lug 17 projecting into the opening 12. Said guidewayhas a longitudinal groove 18' in its inner face, Fig. 5, and to the underside of the shank 14: is adjust-ably secured a plate '19'having a depending stud 20, Fig. 3, which is held against the inner edge of a horizontally stitched, thereby completing the stitching. this point in the cycle the stitch-forming: instrum'entality is thrown out 'of'foperation by the unclntching of'thefio swinging lever 21 fulcrurned at 22 on .the

bed-plate. Strong springs 23 attached at their outer ends to the bed-plateand at their inner ends to the guideway 13 not only hold the stud 20 in engagement withthe lever 21 but they also effect outward lateral movement of said guidewayg A shifting lever 24c having a fixed fulcrum 25 carries at itsrear end a roller or other stud 26 which passes through a hole 27, Fig. 3, in the bottom of the curb B and enters a groove 28 in theunderside of the cam B, the front end of the lever being an adjustable stud 29 which cooperates with the outer edge of the lever 21. The cam '125 slotted longitudinally for the reception of" substantially S-shaped, to impart to the front end of the shifting lever 24 an out and in movement at each revolution of the.

' cam B, whereby the guideway 13 is moved laterally outward from its normal position and then inward past normal,'and back to normal as the roller 26 again enters the cir cular part of the cam groove. This lateral shifting of the guideway is effected when.

' the needle is stitching around the eye-end of the buttonhole, .and effects at such time the requisite lateral bodily movement of the work-clamp to enable the stitching to be performed properly.-

- present invention, comprlses essentially a The work-clamp, 1n accordance with my lower member, upon which the work rests,

upper clamping members mounted uponand .movable relatl.- 1yto the lower member, to

clamp the work thereupon, and laterally movable spreaders located 0n,the lower v'inember of the clamp beneath the upper members, the clamped portion of thework being held between said upper members and the spreaders. The lower member .of the clamp is herein shown as a rectangular metal plate 31 having near one of its side 1 edges a longitudinal groove 32 in its lower face, to receive the guideway 13, see Figs.

'5 and 6. A thin ear 33 on said member 31 is arranged. to slidably enterthe groove 18 in the guidewaywhen the work-clamp is in position, preventing any lifting of the clamp during the operation of the machine,

the bottom of the clamp member 31 resting upon the top of, the bed-plate A around the offtfhe opening 12, as shown in Figs. 2 and 5,; and as'shown in. Fig. 2 the clamp-is in its extreme rearward position. The member 3"; has an elongated central opening 34for-athe passage of theneedle A during the stitching of the bu ttonhole', and on the top of 3 said member, at each side of the needle opening, opposite and like spreader's 35 are mounted, fulcrumed at their front ends at 36, said spreaders having roughened portions 37, Fig. 2, to insurea firm hold upon the underside of the work when clamped. Asshown in Figs. 2and- 6 the laterally swinging Spreaders are shaped substantially to accord witlr'th'e outline of sides and'front endofthe forward portion inner edges of the rearwardlyextended and Q ,the buttonhole to be stitched, as at 38. In-

ward movement of said Spreaders is limited by stop pins 39, and a slotted toe 40, is'adust-ably. mounted on the rear end of each spreader by a set-screw 41.

Bearings 42, 43 on the .top'o ffthe clamp member 31 at its rear end' support a trans verse clamping-rock-shaft 44 havingfixedl-y attached to it the hubs of depending toes 45, which extendthroughsuitable openings 1 ,46 in the member 31.

The lower end of each toe is inturned and socketed at 47 'for.

the reception of a strong spring 48, Figs. 5 to 9, the free end of each spring bearing against the opposed tail 49 depending from the hub '50 of a curved and frontwardly extended arm 51 overhanging the clamp mem-' ber 31.v -As shown in Figs. 2and 5 the.

free endsof the arms 51are bent inward 1 #toward each other to lie above the spreaders 35, and each arm has pivoted .to itat 52 the slotted ear 53; of one of the upper clamping members 54, and as shown by dotted slight rocking movement on its pivot to enable it-to rest squarely and firmly upon the work, as is usual in the Reece type of "machine.

lines Fig. 7 each of said members has-a In Fig; 9 theclampi'ng members-54am I shown-in clampirig position upon the work NV.- The hubs 45* of the toes 45 are fixed on the' shaft 44 adjacent the. inner ends of the bearings '42, 43, and the hubs 50 of the clamp-carrying arms 51 are loose on said shaft between the hubs 45 Springs-55 attached to the bottom of'the clamp member 31 act upon the tails 49 to elevate the arms 51 and unclamp the work whenever the clamp-closing toes 4'51 assume the position shown in F igsr5 to 8 inclusive, and thus the springs 55 may be termed clamp-openw ing springs. Said springs. also tend nor-- mall'y to move the hubs 5O inward on the rock-shaft 44 so that the inneredges of the tails act upon the spreaders 35 and hold them against the stop pins 39, thelateral separation .of thespreaders, effected by means to be described,thus moving with the m,against thestress of" the springs 55the.arms 51' and-the upperclamping members 54 which at thattime are in clamping position. WVhen the rock-shaft 44' is turned to depress the'toes 45 the. springs 4am compressed more or less, depending 'upon the' thickness of" the work; and they act upon the tails 49 to depress the front ends of'the arms 51 and thereby to force the upper clamping members 54 firmly upon the work W, Fig. 9', the work then being clamped between said members 54' and the spreaders 35. g

. As herein shown the hub of the toe 45 turned lug 62 at its free end, for a purpose 5 flee; Figs."8 and 9, I

to be described, the shaft andclamping cam Q 57 being held by a, spring 63' in inoperative position, shown inFigs. 5, 7 and 8, with a part of the hub 60 against a stop pin 64.

tom of i Q The hub 60 isalso provided with a finger transverse latch the latch crossing the path-of movement 7 0 the dog 56 to close the work-clamp, and in .piece- 65, by

means of which the clamp mechanism can be operated by,handwhen desired. r

An ear 66 on theftop of the extension has pivoted to it at 67 an inwardly extended, 68 normally held down against a' stop pin 69by alight spring 70,

suohmovem'ent'the .dog 56 wipes-under and temporarily lifts the latch, the spring 70 pulling the latch-down behind the tip of said dog, see'Fig. 9, when the clamp is closed. It will be apparent that the dog is now looked bythe latch, With the upper clamping members 54 closed upon the work, i and the work-clamp cannot be opened until the latch is trippedto release the dog, such release permittin the springss48 and 55 to Jmove the various movable parts of the workclamp to the positions shown in Figs. 5 to 8,

andv also in Fig. 1. v The inner end ofthe locking latch'68 is bent to present a cam 71- inclined to the gen- .er'al plane of said latch, andat the proper time in the buttonhole making cycle sa d cam is acted upon by. a tripping or releasing finger 72 on the vertical rock-shaft A", so

that as said finger engages the rear or under face of the cam'71 the rotation of the shaft A will cause the-finger to elevate the cam and latch, to thereby release the; dog 56 and permit the work-clamp to openby the means 5 described.

Referring to Fig. 1,.the front end of the clamp-elosing'lever B has jointed to it at 73 an upturnedlatch-lever 74 having a notch 75 adapted to at times engage the lateral lug 62 on the rocker arm 61, previously referred to, the lever passing through a slot 76 in the bed-plate, Fig; 2, and a spring77 acts to yieldingly hold the lever against the front end o'f' Slot When the parts .of the machine are posiitioned asin Fig. 1 in readiness to begin the cycle of operations the operator'depresses the starting lever a, and the mach ne is I clamp 'is' closed upon p started with] the high speed mechanism in action, as usual, and the clamp-closing lever B is depressed. This action draws down the latch-lever 74,,a-nd. as the lug 62 is in thenotch 75. the camshaft 58 is turned from the position shown in Figs. 7 and 8 to that shown in 9, the cam 57 swings forward the dog 56,; and by the means. described the passing under the latch 68 and as the latter drops down behind the. dog the clamp is locked iii-closed position.v Such closing and locking/of the clamp-is thus'efi'ected auto matically as. the cycle of operations begins, and befo-rethe lever 13 again rises to normal position, such rise disengaging -the latch-lever 74 from the lug 62, leaving the the work, said dog 'the remainder of the cycle -'Should it become necessary reopen the clamp by hand duringthe stitching operation the latch 68 1s tripped by hand, and thereafter said clamp can be again closedby. means of the fingerypiece 65.' I

t movementof the work-clamp bodily' will now be described, particular reference being hadto. Figs; 2, 3, 4 and 13. The partB ofthe curb casting B in which the feed shaft 13 has its bearings is provided with a centrally located, longitudinal guideway'78 for the. reception of the rear end or tail 79 of the work-clamp slide or carrier 80, the peculiar shape .of said carrier in plan being clearly shown in Fig. 1 3. In practice said carrier is made as a strong and rigid metal plate, the tail being widened to provide a guidew'a'y 78; the front end of the carrier havingfla laterallyjextended head 81. The front end 82 of the carrier is slidably 'supported on the top of the curb casting B opening 12 in the bed-plate. A depending roller or other stud 83 depends from the car rier and enters a groove 84 in the. top face of the main cam B, whereby the rotation of the cam governs the fore and aft'sliding movement of the'carrier. Inasmuch as the movement is very important I have 1nd1,

specific portions of the cam groove 8ft. Durfrom 88 to 89 the work-clamp is moved rearward to place the work in the clampin position tobe operated upon by the cutter, and the dwellportion of the cam groove from'89 to .90 maintains the clamp stationary during the operation of the cutter. From 90 to 85 theworlr-clamp is given a slight-and final rear Ward movement to initial position and the machine-stops, the cycle havingbeen completed.

through the angle-between S5 and 87 the through the pulley a, and the low speed mechanism, driven through pulley f", Fig. 15, is in action during the revolution of the cam through the angle 87-88, and then the high speed mechanism is again thrown into work-clamp free to. belm oved bodily during cated on Fig. .13 themovements effected by stitched. During the angular mo'vement' "high speed mechanism is in action, driven The means for effecting the foreandaft r .firm -guide ,port ion for cooperation with p 9& which extends beneath the front part of the ing the angular movement of the cam B It may be stated that while the cam is revolved action and continues incontrol until theangle 88-90-85 is traversed and the machine comes to a stop; 4

At the inner end of the head 81 the clamp carrier is provided with an upright ear 91 having a socket 92 in its outer vertical face,

see dotted lines Fig. 13', the saidfac'e being extended frontwardly by a cam 93, the socketbeing'adapted to receive a.ball-1ike lateral projection 94: on a stiff spring-finger. 95 fixed at one endon a lug- 96 depending -from the'bottom of the clamp member 31,

see Figs-5 and 6, and adjustably held thereon by set screws- 97. When the said member 31 is seated on-the bed-plate A, in proper cooperation /with the laterally movable guide bar 13, as has been described, 1t is slid rearward until the projection. 94: rides upon the cam 93 and then snaps. into the socket 92, detachably but positively connecting the work-clamp and lts sliding carrier 80. When said parts are so connected the work-' clamp moves frontward or rearward in unison with'its carrier, as will be apparent, and when the guide bar 13 is moved laterally by the described devices during the turning H movement of theneedle when stitching the eye-end of the buttonhole the projection94' can move-inward and outwardin the socket 92 while the lateral movement ofthe workclamp is effected by said guide: bar 1 3,'the

spring-finger 95 at such time maintaining the connection between the work-clamp and its carrien I It is necessary at times it fz detach, the work clamp from the carrier,"andto"facilitatesuch detachment I havepi oted at 98 in the carrier head 81 a releasing :lever99, normallyretr'acted by a spring 100,'F-ig. 5, and

located justback of the car 91. By swing ing said lever to. the right, Fig. 5, itpresses againstthe' free end of the. spring finger 95 and deflects it enough to withdraw the proje'ction 94 from the socket 92, thereby disconnecting or uncoupling the work-clamp has three upright J outermost cam bar h hasza'high part 12 which is beveledat its'rear' end, at 13*, and said bar coiiperates with the roll 8", Fig. 15,

servingias a stitch controller. During the StltClfingoOf one side of the buttonhole, when the work-clamp is moving frontward, the ,roll 8*? rests o'n'the high part 12", and travels down the bevel 13 when stitching aroundthe eye begins, and when such stitching is completed the roll rides up the bevel, (the Work-clamp then moving rearward) the roll resting on the high part 12 when the'other ri'se and fall of the roll 8 shifting the fulcrum stud C in a manner similar to that I described in the Hill patent. -'As the stitchcontroller cam bar [L moves in unison with the work-clamp carrier the fore and aft adjustment of said bar by means of its set screw 103 provides for the stitching ofbuttonholes of difierent length.

In Fig. l5the clutch-dog d and its tail (Z are as in the Hill patent, the engagement of the tailjwith the stop-lug a operating to release or unclutch the pulley f from the stitch-shaft A, and inFig; 15 I have omitted parts shown in Fig; 4, to' make the drawing clearer.- ,7

7 Referring now to Fig. 1 the oppositely extended arms f, f on the hub' of the depending arm a the lug 32 on arm 1. and

thespring f 't0 lift said arm against the adjus't'able stop f the pivoted latch f shouldered to at times engage the lug 82?, and the releasing projection f on the latch, are all as in the Hill patent. So, too, the radius bar 9'. pivoted on the arm f and having a stud 9 provided at the outer side of the bar with a roll 9 the lever g pivoted on they ing a toe g and anotch 37 to at'timesengagetheinner end of stud g and the spring 9 are all as in the Hill'patent, and operate as therein set forth.

The middle cam. bar if is thelengthcontrolling bar, it also moving fore and aft in'unison with the work-clamp, setting of 6 said bar frontward by means of its setscrew 103 providin for a longer button hole, while rearwar provides for the stitching of a shorter buttonhole, as will be obvious. Said cam bar has an incline'lO L'near its front end, an ad-v jacent .high part 105, and'ashort incline 106, Figs. 2 and, and the rear end 107 of adjustment of the bar the bar is adapted to cooperate at times v with the projection f The lever a', Fig-15, must be turned to disengage the stop lug a? from the'ta'il of the clutch-dog 6Z3 in order to bring into action the stitch-forming mechanism by clutching the pulley f to the shaft A, to

rotate the latter.'

Referring now to Fig. 4, when the frontward movement of the carrier 80 moves the worlr clamp to theleft to clamp the work and position it properly with relation to the stitch-forming devices, the roll 9 (locked in the position shown in Fig. 4) will ride up the incline 104 as the cam bar It moves frontward with theclamp carrier, and there by the three armedlever f, f, a is turned to rock shafta and lever a is moved to' release the clutch-dog, substantially as in the Hill patent while the arm a swings the lever a to u-nclutch the pulley a. As the arm f is depressed the latch f is brought into engagement with the lug 32* and therethe stitchforming period" of the cycle, Af- I causing the latch f by the said three 'armed lever is locked during the stitch-making period of the cycle. in order to release the radius-bar g from the notched'lever g the toe g of the latter ter the eye-end of thebuttonhole has been stitched the work-clamp is moved rearward, or to the right, Fig. 4, while the second side i of the buttonhole is 'stitehed,.and L during this movementthe projection f is" struck by the rearend 107 of the cam bar 7?", to release the lug 32f,

permitting spring f to turn the shaft a and lever a .into position to enable the stoplug a to engage the tail of the clutch-dog dfl'Fig. 15, to unclutch the shaft A from i the pulley f t. Simultaneously the. arm a moved into position to permit the spring 102 to operate the lever a and again clutch the pulley. a to the shaft B The stud g? is also brought into engagement with the upright re-setting abutment 109 on the innermost cam bar 7110, during the final rearward movement of the work-clamp carrier, to push the stud into operative engagement with the lever g and thereby fe-set the adjacent-parts in the relative position shown in Fig. 4-, in readiness for thecommencement of the next cycle. As soon as the roll 9 has reached the high part 105 of the cam the movement of the rockshaft a, and lever.

a is completed, so far as release of the clutch-dog d is concerned, hence the. re.

lease of the'radius-bar 9 permits movement of the roll 9 away from the cam-bar h, to avoid any interference with other parts of the mechanism as the cycle is continued-and completed. I have made the bar It adjust able in order that the resetting abutment 109 may be properly set, but ordinarily after the cam bars 71 and h are once-set there is no occasion for readjustment. The

set-screws 103 are at all times readily accessible at the top of the bed-plate A, and when it is necessary to make an adjustment it can be done'rapidly and easily without any interference with the other parts of the mechanism. mounted on the carrier head 81 they move as a unit with the carrier and with the work-clamp in the frontward and rearward movements thereof, giving absolute positiveness to the relation of the parts at all times.

It will be seen thatin their general 'functions the cam bars herein correspond to the while 7 the work-clamp As the cam bars are all rigidly resetting,

cut, but the manner in mounted and actuated is of necessity materially dlflerent.

having at its inner end an adjustable stud 112 which lies the path of the rear end of move the outer arm of the .lever against a stop ll iwhen the carrier moves outward. The-outer end of the lever has pivotally connected with it a link 115 having a cam face 116 adjacent its link is interposed between the convexed end 10f the. tee a? on the rear end of the lever a and a depending lug 117, see Fig.14, on the underside of the'levera located on the underside of the bed-plate and pivoted thereon at 118, Fig. 3. The front end of upon by the lower end a of the starting lever 0, substantially as in the Hill patent, to hold the lever in the position shown in Fig. 3 when the machine is at rest. When the startinglever is moved to start the ma Fig, 3 away from the dog a, and immediately the strong spring 102* operates to rock finger an outward, to thereby clutch together the pulley a and the feed-shaft B and at that time the thick part of thefllink 115 is in position between the lug 117 and the finger a. Co-ns'equentlythe clutching movement of lever' (1 causes its finger a" to force outward the link and the lug 117, so that the lever a is rocked and the dog (4 moves inward in front of the end a of the starting lever, holding the latter temporarily in starting position. As the frontward movement of the work-clamp carrier is begun (under the influence of the high speed pulley a) the carrier tail 79 moves away from the stud 112 and the sp'ring 113 rocks the lever 111 until its outer arm engages the step 114, whereby the thick part of the link 115 is withdrawn from the tinger a" and lug 11-7, and then the lever is free tobe returned to its normal position shown only in Fig. 3. When said lever 1s returned to normal position its dog releases the lower end a of the starting lever a. the latter, which is spring-controlled as in the patents referred to, then resumingits thereof is inside the dog a and the lever (0 is thereby held against any rocking movement. The clutch lever a is. rocked at the pioper time to throw the pulley a out of action, and at the same time the, lowspeed l pulley f is thrown into action, all as has been described, to control the mechanism Attherear end of thebed-plate A,-Fig. 3,1 X pivotn'pon its underside at 110 a lever 111 the carrier tail 79, a spring 113 operating to free and thinend, which normal position, Fig. -1, and now the end a length-controlling and stitchcontrolling members shownin the Hill patwhich they are lever a has a dog a thereon which is acted 'chine its lower end o is moved to the left,

thelever. a, moving its rear end and the by the action of the usual return spring 30f),

while the stitching of the buttonhole is effected, and then the high speed pulley is again brought into action to effect the movement of the workfclamp'into position for the cutter Gr to operate. Thereafter the finalv rearward movement of the work-clamp carrier causes its tail 79 to engage the stud 112 and the lever 111 is rocked to force the thick part of the link 115 betweenthe finger a and-the lug 117 It will'be remembered that as 'the lever a? is now locked'from swinging movement the lug 111 isheld Stationary and serves as an abutment past which the camface 116 slides, so that the finger a" is moved away from the lug 1,17 and thereby the clutch, lever a -is-ret-urned to inactive I position after the completion of the button position, Fig. 3, the finger a at such time effecting the unclutching of the pulley a,-

and the machine as a whole comes to rest, the cycle having been completed. Thus the stoppage of the machine is controlled by the movement of the work-clamp carrier to, final hole, and thelever 111 and its connected link 115- constitutes a stopping device governed by the clamp carrier 80, and the link'of such device is also made effective to impart the initial swinging movement to the lever a when the spring 10 2 acts the first time to operate theclutchle'ver a.

-Referring to Fig. 2 it' will be seen that when the clamp is closed uponthe' work the toes 40 of the Spreaders are behind the vertica l rock-shaft A and as the closed work 35 clamp is moved frontward to position for the-buttonlioleto *be stitched the toes pass on opposite sides of said rock-shaft and are thereby separated, to swine the spreaders 35 outward'and thereby strewn the work. As theupper'clamp members 54 are now clamping the workupon the 'spreaders the lateral movement of the latter causesthe members 54 to move with them, the hubs of the arms '51 sliding outward upon the shaft 44, The pressure of the clamp members 54: upon the. spreaders holds them against the lower clamp member 31 in spread position during the stitching and cutting of the buttonhole,

so that the portion of the work in which the,

buttonhole is to be made is held taut and stretched during such operation,

Referring to Fig. 10 the position of the rock-shaft A and its tripping finger 7 2 with relation to the latch cam 71 is shown at the commencement of the cycle of operations, and corresponds tot-he position of such parts shown in Figs. 1, 2 and 3 Now the work- -clamp is moved frontward to stitchingposition, and the stitch-forming instrumentality is thrown into action while the front-ward movement of the work-clamp is continued step by step and one side of thebuttonhole is stitched as at S Fig. 11, and then the rock-shaft A3 is turned to the position therein shown, with its tripping finger 72 in the path of the latch cam 71, the turning of said rock-shaft causing-the needle-bar to travel in an arc to stitch the eye-end S of the buttonhole, as in the patents lreferred'to. Dur ing the stitching of the eye-end the work- 'clamp is moved laterally by "or through the operation of the laterally movable guideway v or bar 13, previously described, and nowthe second side of the buttonhole is -to he stitched. Beginning with the parts in the relative position'shown in Fig. 11 the-work clampris moved rearward step by step and the second side S of the buttonhole. is stitched, see Fig. 12, and the stitching is completed, so that the stitch-forminginstrumentality-is thrown out of action and the highspeed pulley e is thrown into action to continue at a rapid rate therearward movement ofthe workclamp. As the latter is about to'attain its final rearward positionthe rock shaft- A is tunned to restore V theineedle-bar and needle to starting position in readiness for the nextcycle, and as the finger 72 turns from dotted to full line position, Fig. 12, it wipes under the cam 71 and raises the latch 68 to release the dog 56, and thereupon the work-clamp is. opened to release the-work. i

In Fig. 2 I have not lettered the different portions of the cam groove 84, asthe said portions are frilly and clearly indicated in Fig. 13.

From the foregoing description, taken in connection withihe drawings, it' will be seenthat while various portions of the mech-- anism are substantially the sameas arev shown in the Reece and Hill patents to i which reference has been made the general arrangement and operation of the machine as a whole is materially different, rendered necessary by making the stitch-forming instrumenta'lity stationary as a whole, and mounting it upon the bed-plate, while the work-clamp and its adjuncts, (having very little weight) are made to move bodily upon and with relation to the bed-plate. This construction reduces the operating power necessary to run the machine as a whole, and

enables me 'to operate it at a. very muchhi'gher rate of speed without any improper and objectionable vibration or jar.

- While I have herein referred to high speed and low speed mechanisms for controlling work-clam 'mentality, actuating means for said with relation, to, said; stitch-forming instru- WOIk clamp, including a reciprocating carrier slidablymountedf on the undersi bed-plate and. movable longitudinally in said guideway in: a fixed path inthe direction of the length of a buttonhole, separate means to. impart a lateral movement to said Workclamp, during the stitching of the eye-end of a buttonhole, and a positive connection between the carrler and. work-clamp=perm1t- 51 prising a l p Y of said parts to enter a lateral socket in theother ofsaid' parts.

2- In a butt nh ting lateral movement of the latter relatively to the: carrier, said connection comaterally yielding member on one I le sewing machine, abstationary bed-plate having an opening therein, a.- stitchrformijng instrumentalit-y, support- I ingmeans therefor: fixedly attached to the bed-plataga work-clamp. movable inward and; outward; on sald bed-plate I over the said opening providing for pening herei the operation of the complementalparts of i r the stitch-forming instrumentality (above eral' -socket in the other part, and means independentof the carrler-reciprocatlng means I toeifect peri'odical lateral movement of the work-claimp'relatively to the clamp-carrier.

3. In a buttonhole sewing machine, a stationary bedplate having anelongated open ing, a, sti flh-formingjin strumentality mounted on said bed-plate; and adapted to form stitches-f at ahsubsta tially fixed point relatively thereto, a laterally movable guideway mountedonandbeneath'the bed-plate with.- in the opening thereof and parallel to the length f he huttonhole' o b stit h d, mechanisnfto move the and: periodically, a wort-clamp having a lower member grooved, longitudinally on its [underside to slidably engage-the guideway,

lateral movement of the guideway causinga device to prevent accidental disconnection; of the latter and-the work-clamp, and mechanism positively connected directly with the lower member of the work-clamp to move it bodily upon and lengthwise of the guide-.

way, to position'the work with respect to tlie'stitch making point during'the stitching of the opposite sides of the buttonhole, the

bodily lateral movement of the work-clamp in unison therewith. I r \l 4'. In a'buttonh'le sewing machine promovable-upon the, 'upperlside; of he hef-nlate into. nd t at ppslt o fi e of the uidew ay laterally negates :vid d with a stitch-harming instrumentality adapted to make overedgestitches, a, stat onary bed-plate on which. said instrumentality is supported, a work-clamp comprising upper and lower members, -the lower member being slidable upon the bed-platein; the direction of the length of abuttonhole and also at right angles thereto, a recipro eating carrier slidably mounted on the bedplate. and connected with the work-clamp,'a

fixed guideway on the-underside of said bed-plate vin which the carrier is movable longitudinally and by which the carrier is held from lateral movement, an: actuating cam for' the carrier a guide-barniovably mounted 'in the be -plateandparallel to the length, of the buttonhole to be stitched;

and in direct and continuoussliding engagement with the lower member otthe work- 'cliunp adjacent one side thereof, and means to, move said guide-bar, and through it the r -work,- c1an p,in a lateral direction bodily when the eye-end of the .buttonhole is-belng stitched, the connection betweenthe' carrier and "the work-clamp comprising a lateral memberon oneof said parts to enter freely a lateral socketin the other part, thereby permitting lateral movement of the workvclamp. relatively to the carrier.

In dbuttonhole sewing machine providedwith a stitch-form inginstrumentality adapted to make overedge' stitches, a stationary bed-platoon "which said instrumentality is supported, awork-clamp movable upon said bed-plate longitudinally and laterally with respect to 'the stitch-making point, said clamp having a lower member provided with a longitudinal groove in its I under side, a guide-bar mounted on the bedplate and laterally movablethereon, to enter the groove in said clamp member, means to lock said member and the-guide-bar in sliding engagement, mechanism tofleii'e 'ct periodical lateral movement of the guide-bar,

a longitudinally reciprocating carrier slid-,

ably mounted on the bed-plate, a separable, laterally yielding connection'between said carrler and the lower member Ofthew ork-. clamp, wherebythe latter ismoved longi tudinally by the carrier when the'sides of .the buttonhole are being stitched, the said connection permitting lateral movement of the clampwhen the eye-"end of t-he button hole is being stitched, and a manually operate'd device to separate said carrier and the work-clamp.

-6. In a buttonhole sewing machine pro- 4' vided with a stitch-forming instrumentality adapted to stitch a buttonhole, a work-clamp.

comprising a centrally slotted lower member. arrd'notiperatmg upper clamplng members at the sides of the slot, a transverse rock-shaft mounted on the lower member,

overhanging arms fulcrumed on .said rockshaft and supporting theupper clamping I i 50 clamp member.

members, each arm having an extension depending below the lower member 7 of the clamp, downturned toes fast on the rockshaft'and Opposite said extensions, a spring 5 interposed bet-ween eachextensionand its cooperating toe, means to rock said shaft and thereby causeth'e toes to compress the springs and cause the upper clamping members to descend upon the work, the springs in permitting work of varyi g thlckness to be clamped, and meansto lock the rock-shaft when the upper clampingfmembers are depressed, combined with mechanismto move the work-clamp'bodily with relation to the iS'Stitch-forming instrumentality during the stitching ofv a buttonhole, and a device to release the rock-shaft after the completion of a buttonhole. I I

7. In a buttonhole sewing machine, a

work-clamp comprising a lower ,memberlcentrally slotted for a portion of'its length, cooperating upper clamping members at the ;sides 1of the slot, supporting armsfforand ,connected with said; upper members, a com-- inon fulcrum forsard arms, mounted on the lower member and on which fulcrum said arms are movable laterally toward and from each other, laterally. movable spreaders' on the lower member, beneath the upper clamping members,' yielding means to normally,

move said arms inward on the fulcrum and 'thereby move the upper clamping members and the Spreaders toward the longitudinal axis of the slot lnfihdlOWGI' member of the 35, clam each-arm having a depending part engaging the adjacent spreader, and means to swing the supporting arms on said ful-,

crum and cause the upper clamping mem- 'bers ,to clamplthe work between-them and 40 the spreaders, combined with a-stitch-forming'instrumentality to stitch a-buttonhole,

mechanism connected with thef'lower mem; ber of the clamp to move said;w ork-clampT odily with relation to; the Said instrumen- 't'ality during the stitching of a buttonhole, "and a relatively fixed device-to ootiperate di- 'rectly with and separate the spr'eaders before the stitching begins and thereby stretch the clamped work above thesloti'nthe lower 8; In a buttonhole sewing machine pro- Vided with a stitch-forming instrumentality including a vertical rock-shaft rotated at predetermined intervals, a. stationary bedplate on which said instrumentality is,

mounted, and having an opening through avhich the rock-shaft extends, afwork-clamp bodily movable uponthe'be'd-plate and over the opening therein to present the clamped work to said stitch-forming instrumentality, said clamp includinga lower member and upper clamping members carried thereby, a dog movable into operative position when 1;; the clamp is closed, and a transversely-ex- Wtended latch to engage said dog and hold it from" movement, to lock said members in closed" position, the dog passing'under and momentarily lifting 'thelatch as the clamp is closed, means to efliect'bo dily movement of the work-clamp during the stitching ofa 7b buttonhole, means to closethe clamp prior "to the stitchingoperation and thereby effect movement of the dog into'locking engagement with the latch, and a latch-releasing device on saidrock-shaft broughtinto'position by rotation of the. rock-shaft to engage and lift the latch out of engagement with andthereby release the d0g, to ermit' the opening of the work-clampwhen t e lat- 9'. lfi i-af buttonhole sewing machine pro vided withta stitch-forming instrumentality can' pass, clamp-closing devices, j'and a '95 transversely extended: latch to retain the clamp closed, said latch being pivotally mounted on the lower clamp member and having at its inner end a cam, means independent of the clamp to actuate said closing devices prior to the stitching operation and bring them under the controllof the-latch, mechanism to eifeot bodily movement of the work-clamp during the formation-of-a' buttonhole'and to thereafter return the clamp to normal position, and means mounted on,

and operatively positionedby rotative movement of the saidrock-shaift' to engage the cam of androck the-latch to release the, clamp-closing devices from control of said latch and permitopen'ingof the work; clamp after the completion-of 'a buttonhole.

10. In a buttonhole sewing machine vprovided with a buttonhole-cutting device and 'a stitch-forming instrumentalityfixedly 0 115.

sitioned as a whole with relation to said cutting device, in combination, a. stationary bed-plate by which said instrumentality is supported,' a; work-clamp bodily movable upon the bed-plate to present the work to said stitch-forming instrumentality and thereafter to the cutting device, to effect first I the stitching-and then thecutting of-a buttonhole,' 'means beneath the bed-plateand .operatively connected with the work-clamp to effect the bodily movement thereof,- a high speed mechanism to actuate said means when the work-clamp is-moved to stitching position. and thereafter to foutting position,

a low speed mechanism to actuate said 1 ter is returned 'tonormal position after the p complelflon of a buttonhole. I

memes means. duningthe sti ehing the time vided with. a buttonholeenttangdevice and 7' gagement throu hout its length with thehole, dev ces moving with the workclamp to throw said; high and; low: speed mechanisms into and out: of action, at the proper; t1mes. I

1-. In; a button-hole'sew ng mac ine 19150 a stitch-.iforming inst-numentalityfixedlyp0,- sitioned asta whole with. relation to said cue. ting device, in combination, a stationany bed-plate by which saiid instrumentality is supported, a work-clamp bodily movable upon the bed-plateto presentthe work to said stitchrforming instcwncntaiity and to' the cutting device; alternation means, ineluding a carnier longitudinally slidable beneath the bedrplateconnected with the;

worksclamp, toefi'ect bodily movement ot the latter-trout stitching to. cutting-position, and vice versa, and. during the stitching opr oration, high peed. mechanism to actuate said means when the stitcheiorming' instrumentalityis; iiioperati-ve low speed: mecha nism; to actuate said means during the stitche' 'ing operation and also-.operatingsaid stitchforming instrumentality', controlling. mem bers mounted on the carnier to. govern the action of said'h gh and low speed'mechalisnri and means. mounted' 'on the bed-plate hole, said; clam-p comprising lower and up per members, the lower member having; a longitudinal: groove in ltsunderside adjacent one of its side edges, separatemeans, includ ing a daterally movableand elongated guide member said groove and sliding enr.

saidlower-mom en of the work-clamp, to move the latter periodically and bodily at right angles to the path of movement oi; the carrier, said carrier and: guide member-being maintained in parallelismiat; alxlj times, high and low speed mechanisms, and means to t row sa d me hanisme ate action a al er;- natlon to efiect the reciprocating movement of the clamp carrier.

13. In a buttonhole sewing machine, a

stitchforming instrumentality, a stationary bed-plate, a work-clamp, means, including a reciprocating carrier slidably mounted at the underside of the bed-plate; to move the clamp bodily in the direction of the length of abuttonhole, separatemcans, including a member in sliding engagement with the nk-damn; o move fl elatt n p r od ca ly a igh angles? to the path oi movement at the carrier,and a detachable socket and lug connection between said; carrier and the Work-- clamp; whereby the; latter may be moved laterally with relation toits carrier While positively connected therewith, V Y

114 In a buttonhole sewing machine, a

bed-plate, a-work-clanap, means, including" a stitch-forming inst-rumentality, a stationary reciprocating carrier slidably mounted at I the undersideot the lied-plate v to move the clamp bodily inthe direction of the length of a buttonhole, separate means, including a member'in sliding engagement; with thework-clamp, to move the latter periodically the carrier, said carrier having a lateral socket in one side thereof, and a yieldingly, sustained lug attached to the work clampand; adapted to snap into the socket, to theneby detachably and; positively opnneet the work-clamp and the carrier. I

- 15. Ina. buttonholc sewing machine, a Stat-ionany bed-plate,v a work-clamp longitudi-- nally- Inovable thereon, a reciprocating car at right angles to the path'o-f .mmement oi rien. on, said bed-plate and positively con-- 1 nected at one end with the work-clamp, va

fixed: guideway on.- the bed-plate to coiiperate' with the other-end ot the carrier, a rotating cam cooperating with the carrier tomoveit and the work-clamp, in one direction and then in theopposite direction for the stitch= ing of first one and then the other side oi?- thebuttonhole, said cam having a dwell por-- tion to, retain the calanier temporarily at rest between such'movements thereof, and sepa-v rate means cooperating with. and. to move the worksclamp, laterally relatively to said a I i carrier while the carrier is at rest and the end of thebuttonhole is being stitchedg combined. with a stitch-for1ninginstrumentality toefiiect the stitching ofthe buttonhole, low

speed'mechanism to eifect the rotation of said cam, when the st itch-forming instru.-'

mentality isin, action, and high speed mach-I anism. to. eiiect rotation of the cam when:

said-instrumentality is out of action.

"16;, In a buttonhole sewing machine, a bedrplate, a Work-clamp. movable thereon longitudinally and laterally, said clamp includingalowe'n membenmeans, including a sliding carrierlongitudinally movable in a fixedpath beneath the bed-plate, to effect longitudinal bodily amazementv of the work clamp, an ear on thecarrier provided with a lateral. socketpavpositive, la-terally movable connection between the carrier and the clamp, comprising a'spring finger on the lower member of'the work-clamp, and a lateral projection on the finger to enter the socket in the ear of the carrier, and periodically acting means to move the work-clamp bodily and laterally on the bed-plate and relatively to the carrier.

17. In a' buttonhole; sewing machine provided with a stitch-forming instrumentality and a cutting device, a work-clamp, stopping means for the machine, a reciprocating carrier positively connected with the workclamp to'move the latter frontward and backward during the stitching of the sides of a buttonhole and then 'into position for the cutting device to cut the materialin the work-clamp, said carrier thereafter effecting an additional and final backward movement of the work-clamp, an actuatingdevice for said stopping means, set-inbperation by such additional and final .inovement of the carrier after the cutting devicehas. operated,- and means mounted upon and grooved as to its operation by amember'of thestitchgforming instrument-ality to open simultaneously the ,clampfor the releaseof the-material. l

18 In a buttonhole sewing machine having a cutting device and a stitch-forming instrumentallty actuated in alternation and relatively fixed with relation to each other,

a bodily movable work-clamp, means to move it to position the work first with relation to the stitch-formin instrumentality while it is in action and t en with relation to the cutting device while said'instrumentalityisat rest, said means including a reciprocating carrier positively connected with the work-clamp,'mechanism to actuate the stitch-forming instrumentality, and a crate.

1 ity, means, including a carrier'operatively- 7 connected with the work-clamp, to effect bodily movement of the latter, and a-lengthcontrolling member adjustably mounted onsaid carrier to cooperate with said controlling mechanism and. determine the time when the driving means shall be thrown into v two subscribing witnesses.

and out of action, adjustment of.said lengthcontrolling member varying the length of the buttonhole to bevstitched'.

20. Ina buttonhole sewing machine, a

bed-plate, a stitch-forming instrumentality fixedly mounted thereon, driving means for said'inStrument'aIity, controlling mechanism to throw the driving means into and'out of action, to thereby start and stop-the stitching operation, a work-clamp bodily movable on the bed-plate relatively to the stitchforming instrumentality, a positively reciprocated' carrier to effect bodily movement of the work-clamp, and a member adjustably {connected with said carrier and accessible at the'tgp of the bed-plate, to cooperate with said'c ontrolling mechanism and cause the driving means to be thrown into and out of" action, adjustment of said member deter-- the length of the buttonhole to bestitched. 7

mining 21. In a buttonhole sewing machine, a

bed-plate, a stitch-forming instrumentality fixedly mounted thereon and adapted to stitch the opposite sides and the eye-end of a buttonhole, mechanism to throw said' instrumentality into and outof action, mechanism to'governthe spacingof the stitches for the sides and eye-end of the buttonhole, a work-clamp, means including a carrier slidably mounted onthe bed-plate, to move said work-clamp bodily lengthwise vof the buttonhole duringthe stitching of the oppo site sides thereof, other' means to move the -work-clamp laterally when the eye-end is being stitched, andindependent controlling members adj ustablymounted on'said carrier,

one of-said members cooperating with and controlling the mechanism which throws the stitch-forming instrumentality into and out of action, to govern the length of the button hole, the other of said controlling members cooperating with andcontrolling the operation of the mechanism whichv governs the spacing ofthe stitches.

In testimony whereof, I have signed my name to this specification, in the presence of I JOHN Kinwicz.

\Vitnesses:

HAROLD J; Wool), PAUL SOHOLZ.

Correction in Letters Patent No. 1,030,589.

It is hereby certified thet in Letters Patent No. 1,030,;589, grant-eiifiune 25, 1912,

upon the applieation of John Kiewicz, of Hyde Park, Massachiisott's, for an imiarovement in fButtor hole-Seviring Machines, mi erroi appeersin th'e printcdspecification i eq uiring correction as follows: Page 12, line 16, for the ivold F grooved read govwned,

and thet the said Letters Patent should be read with this correction thereinthat the eamemay confoi'hri to the record of the case in the Patent Ofliee.

Signed and sealed this 23rd day of J uiy, A. D., 1912;

[SEAL-1 o. o. BILLINGS,

Acting Oommissioner 0] Patents.

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