US1080341A

US1080341A - Buttonhole-finishing machine.

Info

Publication number: US1080341A
Application number: US53975610A
Authority: US
Inventors: George S Hill
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1910-01-24
Filing date: 1910-01-24
Publication date: 1913-12-02
Anticipated expiration: 1930-12-02

Description

Patented Dec. 2, 1913.

G. S. HILL.

BUTTONHOLE FINISHING MACHINE. APPLICATION FILED JAN.24, 1910. 1,080,341

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G. S. HILL. BUTTONHOLE FINISHING MACHINE. APPLICATION FILED JAN.24,1910.

Patented Dec. 2, 1913.

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I v Georges. 25072;

Patented Dec. 2, 1913.

8 SHEBIS- QHEET 3.

G. s.- HILL.

BUTTONHOLE FINISHING MACHINE.

APPLICATION FILED JAN.24, 1910v I5 5 60 .52 MM 4 G. S. HILL. BUTTONHOLE FINISHING MACHINE.

APPLICATION FILED JAN.24, 1910. 1,080,341 Patented Dec. 2, 1913.

B SHEBTS-SHEET 4.

' Patented Dec. 2, 1913.

8 SHEETSflHEET 5.

G. S. HILL.

BUTTONHOLE FINISHING MACHINE. APPLICATION FILED $1111.24, 1910.

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APPLICATION TILED JAN.24,1910 1,080,341 Patented Dec. 2, 1913.

B SHEBTS-SHEET 6.

G. S. HILL. BUTTONHOLE FINISHING MACHINE. APPLICATION FILED JAN.24, 1910 Patented Dec. 2, 1913.

8 SHEETS-SHEET 7.

UNITEDSTATES 1 oneness s. HILL, or s'rrmrronn, NEW HAMPsfimn-"nss'mnoR-ro um'rnlsnon MACHINERY COMPANY, or BATEBSON, NEW JERSEY, AYCORPORATION oE-NEw JERSEY. l

. BUTTONHOLE-FINISHING MACHINE.

1 989,3; 1 Specification of Letters Patent. Iatenfed D-ec 2 Application filed January 24, 191i). Serial no, 539,756.

To all whom it may concern: A

Be it known that I, GEORGE S. HILL, a citizen of the United States, of Strafiord, in the dounty of Straflord and State of New 5 Hampshire, have invented certain new and useful Improvements in Buttonhole-,Fin-

ishmg Machines, ofwhich the folloi'v'frTgd's aspecification.

This invention has relation to that class of machines which may be used for finishinghuttonholes, and by'which the thrum ends and. the stay cord are gathered in line and are stitched to the underface of the work between the ends of the butto'nh'oles by blind stitches.

The principal object of the invention is to provide certninimprovements in machines of the general character referred to, in-con' sequence of which such machines may be run at a higher speed than heretofore possible, so as to increase the production or output of such machines, and thereby decrease proportionately the cost of manufacture of button shoes and gait-ere.

ing elements or instrumenta-lities of the ma chine. By so-doirig I, also provide 'for-op-ierating the tvork 'b'e'nder directly the' driving shaft located below the work: 'su'pport, and thus obviate lost motion. 1-

A furtherobject of thenvention, is to bring together into a-singleorganiz'ed ma chine, a stitch forming mechanism, wherein the needle is positively. reciprocated in the line of feed beneath the Work support, a bender, for bending the -mater'iel into the path of the needle, which islocated above the worlcsupport and is positively moved.

towerd thev materiel by connections 'with the driving shaft beneath the workjsupport,

afeedingmechenisrn which engages the material zit-Lone side of the-bender endis pos'i-' tively moved into a engagement with the ma terial as the bender i's-is seiend moved away fromthe materiel as the bender lowered, and a presser'tootlwhich ney en-g gage the material at one side. of thebender and coilnerete with the feeding'mech'anjismg;

It should be understoodthet tvh'ile-xthe'mea claims,

teriitl during the stithihgopeifetiolhgllshas' A still-further A further object of the invention is to 1Re err i'ng to the accompanying which showby way" of illustration. one ein contained in the case; Fig.52 ifepges t e chine as illustratedas preferably constructedcompr'ises all of] these elements in combination, lily-invention, also includes *ivar'ious other coinbf itio'lis of :more'or less of v these andfother "lelne'tlts ,-ti s -fset forth-'inthe 66 r Another object of the, invhti" clate all the powertrensmit'tingiel the operating instrumentalitiesmachine case, wh'ereby these at f j 5 only elfectively housed from; us t, di rt d: lint, but the upper face ottjhei work-suppbrt V is' substantially free fromiprojectih jipa'rt s, e which ,fa ilimte's the] lian'dlin'gof, Yi5ieih J been above suggested." l object of the "invention to eliminate, so far. as possible,is'priiig-tensi'one'd cam-actuated levers and fib 'iitilize in lieu thereof eccentrics andcraiiksyor other;

direct connections so that the-bpe 15 fi e-ting in P v strumentalities y be c uaedrsmeothly at'ghigh rete of P In'lcarrvmg d ther v'liri-Ql s objects, I have made "a number oi improve-.- ments which 1; have illustrated in the rec-*- 'compnnyin drawings and willdesgqribefi i deta l ,in e following specificati n.- -andf'- point o'utflifi theeeppended cltiinis awaits i i iiivn tion;"in this figure," the work support; is broken away to illustrate the mechanism represents a.- left? end elevation' of the chine partially in section; Fig. 4'. represents.af it transverse section through thernachine 011195 the line H of-Figi 2'; Fig 5 represents a. similar section on the line 5+5.o- Fig., -1 looking in the direction of the arrow;

6 represents a similar section {thioughj the i Kfmachi'ne on the line 66 of Fig.,1,-looking in the direction of the 'airow-;. Fig. -7 -is -"a fdetail vview-:"illustrntingthe double three- "cornered eccentric, and apportionof the I bender levernwhichris opera-ted thereby Figi 8-represents a' transverse sectionon t'he 'line l 8+8 of Fig; 1.;, Fig. .9 .represents wlongiF fltudinal section :on the line. 9-9 of Fig. 1 'Figs. 10 and-11' represent ji nfdetail themea-ns v for] mounting the bender [and for "adjusting 4 the same in the direc 'tion of [its length; :Fig." 1 0.

12 represents in plan view that portionof the work' support which has the throat plate,

the cover plate forthe shuttleplate being removed, Fig. 13 represents .a section on the line 1313 of Fig. 12; Fig. 14 represents a longitudinal section through a portion of the :work support to illustrate 'the'yielding work-receiving jaws between which the work is forced by the bender; Fig. 15 represents afront elevation of the machine and illus- Ktrates in detail the spindle for thethread cone, the presser foot and the bnder-supporting lever being in section; Fig, 16 illus ,trates the finished work; Figs. 17 and 18 illustrate the connections betweenv the main driving shaft, theneedle bar and the looper Fig 19 illustrates the double eccentri'c'by wh ch the bender is actuated;. and Figs. 20 to 22 inclusive, illustrate a" different form of mechanism 'for laterally shifting the needle.

' The machine, which isillustrated upon the drawings and which I shall now proceed to describe, isdesigned to have the needle pene trate the work in a direction opposite toithe direct-ion of feed and generally parallelwith the thrum endsoand stay cord, as they'extend between two adjacent but-tonholes, which needle is also moved laterally relative to the material, after each "engagement therewith, so" as to enter the material first on one side and thenon the other side of the thrum ends and stay cord, andthus to lay the threads between successive stitches across said thrum ends and stay cord, in the manner showniin Fig. 16.

The work, prior to each (penetration by the needle, is forced downwardly by a bender, so as to be slightly bent 'in order that the needle may pass through the convex portion thereof and emerge therefrom and form a loop win the needle thread in position to receive the shuttle carrying the V shuttle thread? After theneedle is with. drawn from the work, the work is advanced one step by the feeding mechanism, the

needle is moved laterally to-the other side of- ;the thrum ends and the stay cerd, and. the

bender again forms a new bend. in the work,

so that the needle may again penetrate it,

and form a second loop in the needle'thread to :receive the shuttle.

'l'n addition to the stitch-forming-mechanism, the bender for bending the material into the path of the needle and the feeding mechanism above referred to,- the machine comprises generally a hollow case, consisting of a lower portion or base and a swinging upper portion or work-support, having meeting side and end walls. Within the case are contained all of the instrumentalitieslof I the machine, with the exception of' the bender and a portion of its'sup'p'orting lever, the resser foot and the presserfoot lever.

T e bender=sup ortmg lever is journ'aled on a shaft located within a shallow raised portion on the top of the work support, otherwise the. work support is fiat, so that thework may be' shifted about and presented with the greatest ease to the operatwork support is hinged to thebase and car ries or supports all of the: operating portions ofthe machine, including the driving belt pulley on the main driving shaft, so that mg instrumentalities of the machine. The V tion, it is in axial alinement with the main driving shaft, and the fast pulley thereon,-

so that the belt may be easily shifted from the fast pulley to the loose .pulley or vice versa I provide mechanism for stopping the rotationof the main driving shaftam'l automatically shifting the belt from the fast' pulley to the loose pulley, and I also provide mechanism for locking the belt shifter against movement when the work support is raised, this locking mechanism being moved to inactive position automatically when the work support is loweredto its normal hori- 'zontal position." However, it will be understood, of course, that some of these mechanisms,- and especially the locking mecha nlsm, may be omitted or modified, if desired, without affecting other features of the invention, or the'es'sential operation of the machine.

';Proceeding to a more det-aileddescriptio'n of the machine which is shown in the accompanying drawings to illustrate one embodimnt of the invention, the case comprises a hollow base 20 and a hollow work support 21., which are hinged together by suitable hinges 22, at the rear of the case, and which have meeting end and side walls. ,In' plan view, the case is generally oblong with a for--' wardly projecting portion at its left end. I

The work support'is provided with dowels 23 at .itsfront corners which project'into complemental apertures in the corners of the b'asefwhen the ',work support is in its normal position, as shown in Fig- 15. The base is provided at the front'and to the right of theforward projecting portion with ashallow rece'ptacle24 having pockets 25 and 26 for. small tools and needles respectively,

. and with pockets 27 to receive filled bobbins;

As illustrated, this receptacle is' closed by.

a hinged cover-28, which when raised or swunga'bou-t its hinge, automatically lifts the cover for the shuttle, as will be subsequently'explained;, so as to expose-the shuttle and permit the removal of the empty bob-- bin,

The main driving shaft 29 is journaled in

bearings

30, 31, which depend from the under side of the work support, as best in Figs. 1 and 2. On the right- -L it shaft 29 is a fast belt pulley l1 lno'unted on a stud shaft 38 the loose ley The stud shaft 33 is rigidly secured in arboss on the inner face of the end wall of the base, and it is in axial alineinent with the shaft 29 when the Work support is closed or horizontal, so that the two pulleys 32 and 34 will be located in close proximity side by side, or in confronting position, as shown in Fig. 2, in consequence of which the belt 35 may be easily shifted from one of said pulleys to the other.

The belt-shifting mechanism compr' belt shifter, consisting of a looped rod or WireBG, shown in dotted lines in Flex 5-. so as to embrace one of the stretches or driving belt, the end of said rod or wire, ing bent at right angles to the loop, and j ing afiixed inan arm 37 secured on a hub rigidly attached to a horizontally arranged rock shaft 39, whose ends are join-hated on pointed screws 40, 4. 0, passed through the front and rear walls of the base, as sho in Fig. l. T hescrews are lot-lied lltil justment by lock nuts 41. The arm 3"; has: an extension 42 with an aperturcd head i through which is passed a rod 44. to a treat? (not shown) beneath the table on which the machine is supported, the base of the one chine being apertured to permit the passage of said rod. The rod is provided with a spherical head 45, as shown in Fig. By drawing down the rod 44, the shaft 39 may be rocked to swing the belt shifter 36 in such position as to shift the belt 35 from the loose pulley 34 to the fast pulley 32. A spring, which will be subsequently explained, rocks the shaft 39 in the opposite direction when the rod 44 is released by removing the foot from the treadle.

In order to lock the belt shifter in the position which it occupies after shifting the belt to the loose pulley, during the time when the work support. is raised or swung about its hinges, I may provide a latch which is illustrated in Fig. 4. Said latch consists of an arm 46 which at its lower end is provided -with truunions 47 resting" in sockets in the bottom of the base. Aspring 43 is attached to the latch and to the rear wall of the base, so as to hold the free end of the latch, when the Work support is in its horizontal position, against a cam projection 49 depending from the under side of the bed.

The lat h is provided with a shoulder or projection 50, which when the work support is raised. and the, free end of the latch is released by the cam projection 49, projects under the head 43 of the beltshiftin lever 42, and holds said lever in its raised positiou, and prevent its he treadle (so as to throw; me nd the locithe loose pull will be thus l port. is raised.

or swu j-ection 1 o the latch and tier 2:;

hell herein dc ploycth a lread ported by the worl 4 will be raiderstood tl ping twice may be ii I have illustrated ril is well adap l ill 'sunted loosely e r itched stop cam hay H too so; v .3 heti'x'eeii the ends of #15, the tension. of th by means of the screw adapted to roc-l' and a natty.

(in the rock shaft- Stl, i ously t )EIl, there is yer til, which enibrzn and, when the shaft rot axis, the arm with the u.- rocked thereby about the axis 57, so as to more the end of the stop pin into and out of alineinent with the cam 32. l have stated that the earn ose upon the shaft 29, and consequently in order that it ma rotate with the shaft, is provided with a pin which pro' iects through a curved slot in the fast belt pulley, and be? ainst a spring located in the sock in "ev. l have not illustrated in d l the aid phi, slot and spring, as they a known eon structions. the spring to minimize the shock stopping of the cam.

livoted to the forward end of the stop pin there is a rod 62. which extends longitudinally of the work support, and is connected to the upwardly projecting arm 63 of a bell crank lever, which pivoted to the rear side of a post 64. The said postprojects upwardly into a socket 65 formed on the under side of the work supp-tilt. and is adjusiahly secured in place by a set "2" The rod extein s through a 67 attached to the post, as shown in sudden to he and between the bracket 67 and a collar 68 fastened on the rod 62 there is interposed a spring 09 which exerts its tension against the rod in such manner as to normally hold the stop pin 54 in aliuernent with the notched cam, and to hold the belt shifter in alinement with the loose pulley. This is the spring to which I previously referred as the means for moving the belt shifter so as to shift the belt to the loose pulley when the trcadle is released by the operator.

Again, referring to the bell crank to which the rod 02 is connected, it will be seen by examining Fig. 2, that it is provided with a substantially horizontally arranged arm 70, which, as will be explained, is utilized to raise the presser foot so thatfwl'i nithe belt is shifted and the main driving shaft is stopped in its rotation, the machine comes to a state of rest with the presser foot raised.

I desire to point out that by reason of the arrangement which I have described, the fast and loose pulleys are arranged within the case Where they are completely covered and protected, and hence the work is pre-' vented from coming into engagement with the rotating parts. To keep the work from striking against the belt, the rear portion of the base is provided with a rearward extension 71, which forms a casing therefor, (see Fig. t). I

The material to be stitched is placed on the work, support with the thrum ends and stay cord against the work support and extending in the general direction of the feed.

The stitch-forming mechanism as in this general type of machine is located and oper ated wholly beneath the work support. As h *ein shown, said stitch-forming mechanism comprises an eye-pointed needle, which is arranged in a plane parallel with the face of the work support and parallel with the line of feed of the work, or, in other words. the needle is arranged in a line transverse to the longitudinal lines of the machine and of the main driving shaft. whereby the needle is caused to move in a direction parallel with the thrum ends and stay cord.

The needle-operating mechanism may be formed in a variety of Ways. As shown in Figs. 8, 13 and 14, the needle 101 is clamped in a needle carrier 102. The lower end of the needle carrier is secured to a horizontally arranged needle bar 103 which is located below the work support and extends from front to rear thereof. The needle projects from its carrier toward the front. of the machine, and a direction opposite to the line of feed of the work. The needle bar is mounted to reciprocate in a support 10 1-, which is pivoted at its rear end to move about a vertical axis.

It will seen that, as shown in Fig. 8, the rear end of the swinging support 18 pro vided with a hub 105, through which a headed pin or pivot 106 is passed upwardly into a boss on the under side of the w support. The hub 105 is out of alineme with the needle bar 103, so as not to inter fere with its reciprocation. ,The forwa d end of the support has a transverse slot .205 to receive a thin guide member 204 on a pin 201 projecting laterally from a depending bracket 202, said pin being secured by a screw 203.

The needle bar and the swinging supportare elongated sufliciently so that, when the support is moved about its axis to swing the needle laterally, "irst to one side and then to the other side of the thrum ends and the stay cord, the stitches on the two sides will be substantially parallel. The support is oscillated about its axis by means of the rying mechanism actuated by the main driving shaft.

Secured upon the main driving shaft 29 is a-spiral gear 107 (see Fig. 2), which intermeshes with and drives a larger gear 108, the ratio of the gears being as one to two. The gear 108 is fast upon a vertical shaft 100, which projects downwardly through. a vertical bearing afforded by the work support. as indicated at 110.

On the lower end of the shaft there is a (rank pin 11]., to which is pivoted a pitnian 112, extending longitudinally of the mas chine, and having at its left end a fork which is pivoted to a projection 11 3 extending laterally from the free end of the swinging support 104. According to this an rangement, the swinging support for the needle bar is moved in one direction and then in the opposite direction, once for each two complete rotations of the main driving shaft, in consequence of which the needle is caused to take a stitch first on one side of the thrum ends and the stay cord and then on the other side of the same, previously explained.

In Figs. 20 to 22 inclusive, I have illus trated a different form of mechanisn'i for moving the needle laterally which is lieved to be simpler and more satisfactory than the corresponding mechanism herein before described; In lieu of mounting the needle bar upon a support which ivoted to swing about a vertical axis, here nbe fore described, it is caused to traverse an unvarying path, and the needle carrier i ranged to swing; laterally about the ax the needle bar. The needle bar 10 i ar ranged to slide in guides 180. and 191. Ht" the two guides. the latter 1 .1. is in the form. of a two-armed or V-shapcd hracli'e pending from the work support to which t is attached. The neeole carrier 132 has in its side a bracket which is apertured to ceive a. guide pin 183, which pr jects wardly from a connecting rod or 184. This connecting rod is made-in two sections, connected bya threaded coupling 185, so that the rod may be elongated or contracted as described.

A portion of the connecting rod or pitmnn is passed between two guides 186 depending from the work support to hold it against movement in lines parallel with the path of movement of the needle bar. The end of the connecting rod is connected to a crank pin or eccentric 187 on the end ,of a shaft 188, which is journaled below the work support, and which carries a spiral gear 189 in termeshing with and driyen by a complemental gear 190 on the main driving shaft 29. As the connecting rod 184 is vibrated longitudinally, the needle carrier will be swung about the axis of the needle bar by reason of the sliding engagement of said needle carrier with the guide pin 183 on the said connecting rod or pitman. I utilize this rocking motion of the needle carrier to slightly advance and retract the needle longitudinally with reference to the needle bar, so as to compensate at least to some extent, for variations in the relationship of the needle and the shuttle, due to the lateral movement of the needle. In other words, when the needle is on one side of the thrum ends, it is projected farther with reference to the hook of the shuttle than when it is on the other side of said thrum ends. This compensation is accomplished by forming a coarse thread 191 on the end of the needle bar and forming an internal complemental thread in the needle carrier. The needle carrier is split, as shown in Fig. 22, and an adjusting screw 192 is used to draw the split portions of the nut on the needle carrier ggainst the threaded portion of the needle ar. as one to two, just as in the case of the

gears

107 and 108, previously referred to.

Any convenient mechanism may be utilized for reciprociting the needle bar, al though I find the mechanism which I shall now describe to be satisfactory for the pur- .ose.

p Secured to the left end of the main driving shaft- 29 next to the double eccentric 85, previously described, is a-disk or crank arm 114, which is provided'with a crank pin 115. This crank pin is provided at its end with a second crank arm 116, on the end of which is another crank. pin 117. The last mentioned crank pin has at its end a third crank The ratio of the

gears

190 and 189 is 1122 occupies the said slot and reciprocates longitudinally thereof as the needle bar is actuated by the rotation of the crank pin 116. In the construction shown in Figs. 20 to 22, the block reciprocates lM-tWtQll the guides or brackets 180, 1811.

From the above description it will be noted that the crank pin 115 is disposed on the opposite side of the center of the shaft 29 from the crank pin 117. By this arrangement of the crank pins, the parts coli- Jnected with the shuttle move in lllUI1 to the parts connected with the needle. and, therefore, vibration in the shaft 29 is re- .duced to a minimum as the momentum of the parts moving in one (lirerlion is substantially counterbalanced by the mnmi-ir jtum of the other parts moving in the opposite direction.

The take-up is illustrated at 122". sists of a bent arm, shown, hm ing an eye I 121, through which the thread passes. .vlid .way between its ends, the takeazp lever is T connected by a piv t 125 to an urn; lib which is fulcrun'ied up n a pivot 12? journal -d in a bracket 128 secured to and depending from the under side of the work supporl, it its .forward end, the take-up lever is pivoted upon the crank pin 119, which. it w ii; iii r membered, is carried on the crank arm 118 aflixed to the crank pin 117 on the (rank arm 116. This construction of the tale-up lever and the link connections for actuating it and their mode of operation are not novel in themselves, but only as to theirarrangements in relation to the other elements, and more especially the work su jiport, the needle and needle bar. The take-up arm is pivoted at its lower end, .and its free end which engages the needle thread. swings in an are which lies substantially in a line containing the path of movement of the need e. liy this arrangement of the take-up arm, the pull of the needle thread in sort ing the sl itch is in line with the n edle. which avoids any lateral strain on the needle which might spring the same. Furthernmre, lhe pull of the take-up arm is in line with die feed, which also tends to hold the material in its proper line of travel. wher by the Il rtllQ- may enter the material entirel 'v at one side of the thrum ends, and then entirely at the other side thereof, so that all of the lhrnm The connection between the take-up arm and the driving shaft causes said take-up arm or lever to move slowly forward the needle bar is moved forward to carry the needle through the work, and to be withdrawn r2 idly, when the needle bar is ,retracted, a. take up the loose thread.

The needle thread is drawn as usual from a thread cone 129, s. shown in Fig. l5 and it passes from the tone tin -ugh a thread guide 130, consisting of oiled wire attached it conends may be covered by the stitching threads.

to the raised projection on the work support. From the thread guide 130, the thread passes around a spring-tensioned thread check 131, thence through the spring tension 132 (see Fig. 1) and downward through an aperture 133 (see Fig. 3) through a thread guide 134 attached to the under side of the work support. Thence the thread passes to the eye 124 of the take-up, and then to the eye of the needle.

Cooperating with the needle to form the stitch, is an oscillatory shuttle, which is indicated as a whole at 135. There is no novelty in the shuttle itself, it being of a well known commercial type, so that it will not be described in detail. It is located horizontally below the work support, as shown in Fig. 8, and is caused to oscillate through an arc of more than 180 degrees. The shuttle carrier consists of a vertically arranged shaft 136 having a shuttle driver of the well known construction, the machine being provided with the usual shuttle-race. The shut tle carrier 136 is journaled in a bearing 137 formed on a bracket depending from the work support, as shown in Fig. 8, and on its lower end it is provided with an arm 138 having a crank pin 139. The crank pin 139 extends into the fork end 'of an arm 140, as shown in dotted lines in Fig; 1. This last mentioned arm is secured upon the lower end of a shaft 141, mounted in a bearing in the same bracket which affords a bearing for the shaft 136. The two.

shafts

136 and 141 are parallel. At the upper eng of the shaft 141 there is an arm 142 whic is connected by a pitman 143 with the crank pin 115 on the disk 114. The crank pin 115 is rounded to fit in a complemental aperture in the pitman 143. The pitman 143 is formed in two parts, having a threaded connection, so as to be longitudinally adjustable. Through the medium of the crank pin 115, and the pitman 143, the shaft 141 is rocked through an arc of substantially 90 degrees, and, by reason of the pin and slot connection between the arm 138 on the shaft 136 and the arm .140 on the shaft 141, the shuttle-carrying shaft 136 is oscillated through an arc ofhmore than 180 degrees during each rotatioln of the main driving shaft.

In order that the material maybe bent into the path of the needle, I have formed the work support with an aperture in which is seated the throat plate 86. Said throat plate is provided with a groove 87, which extends longitudinal y of the machine and transverse of the line of feed. In'the bot .tom of the groove 87 is a slot 88, which allows the materialmesting on the work support and throat plate, to be bent downward into the path of the needle, which, as above noted, reciprocates close to th under face of the work support.

As a means for bending the material into the groove in the throat plate and through the slot into the needle path, I have provided a bender 72, which is located above the work support with its lower beveled end directly above said slot. Thebender 72 is mounted on an arm or carrier 73, arranged generally transversely of the longitudinal lines of the machine, its forward end being curved to the left, as shown in Fig. 1. The said arm has an elongated hub journaled upon a shaft 74, the ends of which are mounted in the sides of a raised or humplike projection 75 of the work support. The lever extends through an aperture in the Wall of the projection, its rear and lower end projecting downwardly into the case, as best shown in Fig. 6. The forward end of the arm or bender-supporting lever is split, as shown in Figs. 10 and 11, and is apertured to receive the bender 72. The bender is slotted to receive a key '76, which is held in place bythe clamping screw 7 7 for the split portion of the lever, whereby the bender is held against rotation. The bender is internally threaded to receive the reduced end 78 of a screw havinganenlarged portion 79, which is threaded into the lever. The two portions 78, 79, of the screw are oppositely threaded, and hence, by rotating the milled head "80, the bender may be ad usted longitudinally up and down without the possibility of lost motion. The lower end of the bender is beveled and slightly rounded, as indicated at 810, to engage the work and bend it between work-receiving aws, which will be hereinafter described.-

The lower portion of the lever 73 which extends into the case is forked, the arms being indicated at 81 and 82 respectively. The lever is slotted also as indicated at 83, and a clamping screw 84 is passed through the split portions, so as to adjust the

arms

81, 82,'relatively to each other. The

arms

81 and 82 are staggered, so that they are out of alinement with eaclother, and they engage separate peripheral portions of a double eccentric or cam on the mai-h"'sliaft 29. The eccentric is indicated as a whole at 85 in Fig. 19, and it consists of the two members a and b. The member a is engaged by the fork arm 81, whereas the member I; is engaged by the fork arm 82, see Fig. 7. These two members may be mate separately, although preferably they are formed in one piece. It will be observed that the member a. has a radially extended bearing surface a, concentric with the shaft 29, of, approximately 150 degrees more or less, so that, when the bender is forced downwardly it will dwell at .its lowermost position for a sutlicient time to enable the needle to penetrate the work, form a stitch by reason of the co-action of the shuttle, and then recede (iii ' ra-n 'ed iron the Work before the Fed. The member 6 has a red portion Z) of substannber of degrees and a or nearly recede .vi-en the lever and the eciori: arms niar be drawn tonio'uon bet Hi]... i llU the (thinning new 8% in the {i ihe boson. worn. The acl'ric upon the bender-supi as stated, to depress the and thereby force portion of the no the path the needle and hold te1npoxr-arily until the stitch is n formed, and rhen to move the bender away from the work, so to permit the feeding thereof. The bend-2r rema ns elevated until the i been accomplished, and is then rain.

1 )jcotion on the work support is erof and at one side of the allow a fi feeding of the o stitched. The lever 73 is latruall deflected after lea the slot in the raised ,7 ejection, as to p perly carry and support the bender.

By providing the pivoted bender carrier, I am able to dispensewith the goose neck which heretofore has been considered an in dispensable part of machines of this chareoter. Another advan ta je in'using'the pivoted bender carrier that I am able toactuate the carrier directly and positively by instruine-ntalitics on the main driving shaft, and thus eliminate a number oi: parts and provide against lost motion.

i sometimes find it desirable to provide jaws into which theniaterial may be forced by the bender, which jaws hold the material for the'ent'rance of the needle. In the drawing 1 have shown two

wm'loengaging jaws

91, 91. These jaws are pivoted on a stud 90 carried by the bracket 89, secured to the nnmale the slot and beyond the end thereof, shown in Figs. 13 and 14. The prws are flared upwardly and outwardly, so as toreadily receive the material between them as the bender carries it down through the slot in the throat. plate. Engaged with these two jaws are the ends of a. curved or C- shaped leaf spring 92. which tends to force them ogether, but the extent to which the jaws-may be moved toward each other is limited by pointed adjusting screw closely to hug; the ljze eled placing the is "1) which enters the space between said inns,

in penetrating and receding from the work. it will be observed that the jaws are pivoted upon an axis parallel with the surface of the work, and they are spring-pressed so that they cause he ocnt portion of the work end of the bender, and thus to be beatcomparativelysharply about the end of the bender, andthus present the worl: accurately to the needle. By under spring pressure and z crniitting them to yield, they accommodate themselves to work o varying tl'iicknesses.

he pivot for the us is, as previously stated, a little to the rear of the slot in the work plate, and the jaws are slightly inclined resrn-ardly and downwardly from the vertical, whe 'eas the bender is mounted upon aswinging arm whose pivot is still farther to the rear of the work plate and also above the plane of the main portion of the work support. The effect of this construction and arrangement is to prevent the work from dragging backward in a direo tion oppo to the line of feed, while being ie-p .l by the bender.

So ""1 l inn aware, I. an: the first to have provi led yielding or spring;p1essed work-engaging jaws in a machine of this type. Such jaws insure that the work will be presented accurately" to the needle, as above suggested, but it is contemplated that, espe'eially on relatively thin or flexibleinaterials, the jaws may be omitted without seriously impairing the successful operation of the machine.

For carrying the material through the machine step by step between the forma-' t-ion of successive stitches}. have provided a feeding mechanism which is likewise operated directly from the main driving shaft, and, as herein shown, of the foul-auction type. llrielly described, it consists of a feed dog ti l, which. is secured to a feed bar 145 (see Figs. 8 and 12). Said bar has a lateral extension at its rear end, shown in Fig. 9, which is pivoted upon pointed screws 14G projeri g towai l eaclrotlarr from arms 147, form t on a rock shaft or bar 148 in turn pivoted upon pointed screws lltlfpa l through ears depending from the work snpport at the rear thereof. The rock shaft or rock bar 118 has clamped thereon a lever 150, which has a forked end (see Fig. 5).

On the driving; shaft. 29 there is a dam or irregular eccentric 1531, engaging between and fmward motion, with the proper dwells. at the ends 0 its travel. To {{lCG the feed n, t e lever 1+7 away from the work.

see Figs. 3 and 8. Secured to the rock shaft is another arm 155 (see Fig. 5), which is connected by a link 156 witha pin 157, projecting laterally from the bender-actuating lever-78, as shown in Figs. 1, 5 and 6. By reason of this construction. the up and down movement of the feed dog is controlled by the bender-actuating devices, whereas its forward and back movements are effected directly from the main driving shaft. The feed dog traverses a four-way path, being depressed when the bender is depressed, and being raised into active position to feed the work when the bender is raised or moved Thus-the movement of the feed dog up and down is coincident with the up and down movement of the bender. A

(loiiperating with the feed dog is the presser foot 95, and it'is of any convenient or desirable shape, having a foot portion 96, which is positioned at one side of the bender and immediately above the feed dog. The presser foot is attached to a lever 97, the rear end of. which is pivoted upon the shaft 74 previously referred to, and it is located on the projecting end of said shaft outside of the hump or projection 75, as

best shown in Figs. 1. and 3. .In plan view, the lever ing forwirdly, then to the left, and then ingly whilethe machine is Wardly through the eleva tion,

the bell crank, scribed, is connected to slightly orwardly again, whereas in side as shown in Fig. 3, it is curved. Thus both. the presser foot lever and the bender-actuating lever are bentto the left.

so to extend laterally beyond the-raised portion of the work support, and permit the work to pass freely by said raised portion as it is being fed.

The presser foot is held downward yield-- in operation, and for this purpose there is pivoted to the lever 97 21 depending rod 98, which projects downwork support, and is provided on its lower threaded end with an adjusting nut 99.- I

Between 'the nut and the under side of the work support is a spring 100, which holds the p'resser foot downward 'yieldingly on the face of the work. The lower end of the rod 99 is immediately above the arm of which, as previously dethe' rod 62, which is shifted when the treadle released. lVhen the treadle is released, so as to permit the spring 69 to move the stop pin into engagement with the stop cam and to swing the belt shifter so as toshift the belt- U. the loose pulley. the bell crankis rocked about its axis, and the arm 70 there- 'of enga es the depending rod 98, and raises cover plate 18 in its normal the slot, the spring tends to'hold it in place;

.97 is deflected or crooked, extend-- semicircular cover .mallj extending laterally is depressed or.

spring 100 to force it down yieldingly upon the face of the work.

In order that the needle bar, needle and take-up may be rendered readily accessible for threading,l have formed the work support withan elongated and relatively wide slot, extending from frontto rear above these parts, as indicated at 158. This slot is normally closed by a cover plate 159, which extends rearwardly from the throat plate 86 to the rear wall of the Work support This cover plate is attached to a vertical pin 162, which is adapted both to slide and to rotate in a lug 160, projecting rearwardly from the rear wall of the work suport. p A spring 161 encircles the pin, and has one end attached thereto, and the other end to the lug, so that, by placing the finger below the pin and pressing it upwardly, the

plate will be raised above the'plane of the surface of the work support, and the spring will swing it laterally automatically, so as to uncover the slot in the work support. The spring serves two. functions. When the position closing whereas, when the pin 162 is raised, the spring swings the cover plate to the side. In front of the throat plate 86 there is a plate 163, which norcloses an aperturein the work sup port, and covers the shuttle and shuttle race. This last mentioned cover plate isprovided' with an ear 164,. which is affixed to'a pintle 165, journaled in the work support, and having an arm 166, as shown in Fig. 6. A spring 167'c0nnects the arm with a pin 168 into the work support from the inner side of the forwardly projecting part thereof. The purpose, of this spring is to hold the cover plate normally. close The ear 164 is provided with an extension 169, which may be engaged by a pin or projection 170 extending upwardly from the top of the cover plate 28 for the bobbin receptacle, so that, when the cover plate 28 isswung upwardly, the pin or projection 170 will engage the extension 169, and raise the plate 161 The extension 169 is notched so that, when the plate 28 is vertical, it will lockthe cover plate 163 in its raised position. I

I have constructed the means for holding the thread cones so that cones of different lengths and sizes may be used on the machine. Referring to Fig. 15, 171 represents a rod projecting upwardly from the right end of thework support and havingon its upper end a head 172,-formed with a disk 173 having a frusto-conical or tapering flange 174. Secured in the disk is a sleeve 175, having an passed a spindle 176. The spindle 176 ,is slotted near its end to provide two spring open end into which

isa members

177, 177 to yieldingly engage the interior walls of the sleeve 175, and frictionally hold the spindle therein. The spindle is provided with a head'178 and with a' frusto-conical boss 179:0f the same size as that shown at 17.4. Cones having a small internal diameter may be placed directly upon the sleeve '1 75,whereas cones having a larger internal diameter may be en ported on the conical or tapering bosses or anges 174:, 179.

On the throat plate is arranged a suitable device 200,- of well known construction, for gathering the thrum ends and the stay cord in line, as indicated in Fig. 3, but any other usualdevice for this purpose may be employed." V

It is unnecessary to describe the operation of the machine in detail, as the operation of the various instrumentalities has been described in the foregoing specification. It will be noted that the operating instrumentalities are all positively actuated, the connection between the said instrumentalities and the main driving shaft being such as to insure rapidity of operation and smoothness of motion. I have dispensed with the employment of spring-pressed cam-actuated levers, and have utilized positive driving connections. Wherever springs are used in the machine, they arenot sub ected to continuous compression and expansion due to the application of power thereto, being used only for operating the stopmotion and belt-' shifting devices, or for swinging t'hejmain cover plate of the work support. I I I I shall not attem t toexplain further the advantages which ollow from the construction which I have illustrated and described, as they will be apparent to any one who is familiar with the art to which this invention relates. I do desire, however, to point -out that the invention is not limited to the details of construction which I have seen fit to employ, since the invention is'capable of a variety of other embodiments.

It will be understood that the drawings are more or loss conventional, and that the language which I have employed is for the purpose of description rather than of limita tion.

I also desire to have it understood that the use of the machine is not limited to the finishing of buttonholes of shoes and gaiters, although it is well adapted-for that purpose, since the machine and especially certain features of it, may be employed with advantage for blind-stitching various kinds of work, on account of the high speed at which it may be operated, and also on account of its relative simplicity and durability.

Furthermore, while in order to set forth clearly the entire invention herein claimed,

' I have described 'certain nov el mechanisms for actuating the needle and for driving and this application. The novel features of said mechanisms, however, are the subjggt of two co-pending and continuing applications, Se-

rialxNo. 612,844 filed March 7, 1911, and Se- "rial No. 618,348 filed April-1, 1911.

.Having thus particularlydescribed my'invention, what I claim as new and desire to secure by Letters Patent, is i 1. .A blindlsti h sewing machine including'in combination,a'flbstantially fiat work support haying-a hollow raised projection, a driving shaft mounted in beana s beneath the work support, stitch-forming mechanism located and operating beneath the work-suport, a bender,a nd abender carrier extending from-the interior of said-projection to a point above the work su port, and also extending beneath the wor supportj-and having means for connection to the driving shaft, whereby the same is actuated byfsaid driving shaft. I

2. A blind stitch sewing machine/including in combination, a hollowcasing having a base and a work support located above and spaced from said-base, a driving shaft, de-- vices for operating said driving shaft, a stop mechanism, said driving shaft, operating devices and stop mechanismbeing lo-. cated between the work support and said base and within said hollow casing, stitchforming mechanism, including a needle, located beneath the Work Support and actu ated from said driving shaft, feeding Inechanism located beneath the work support and actuated from said driving shaft, a presser foot above said work support and cooperat ing with said feeding mechanism,'a bender located'above said work support for bending the material into the path of the needle, and means for operating said bender.

3. A blind stitch sewing machine including in combination, a base. a work support located above and spaced from said base, a driving shaft, a fast pulley carried by said driving shaft, a loose pulley adjacent said fast pulley, a belt shifter, and stop mecha nism, said driving shaft, fast pulley, loose pulley, belt shifter and stop mechanism being, located betweenthe work support and said base, stitch-forming mechanism, including a needle, located beneath the work suppolt and actuated from said driving shaft,

feeding mechanism located beneath the work spaced from said base,

a driving shaft mounted in bearings carried by the work support, a fast pulley bender to ing in combination, a base, a work support and hinged thereto,

mounted on said driving shaft, a loose pulley carried by said base, a belt'shifter carried by said base, stitclrformingmechanism mounted beneath the work support and actuated by said driving shaft, feeding mechanism located beneath the work support and actuated from said driving shaft, a bender located above the work support, a bende'r carrier extending beneath the work support and actuated from said driving shaft, and means for looking the belt shifter with the belt held on the loose pulley while said work support is swung about its hinge and the fast pulley moved from its position adjacent the loose pulley.

5. A ing, in combination, feeding mechanism, nism including .a needle ing beneath the work shaft also located beneath the work support and extending transversely to the line of feed and to the path of the needle, a crank adjacent to one end of said shaft and coubuttonhole finishing machine includ-' a work support, work stitch forming mecha located and operatnections therefrom to the needle, a bender carrier fulcrumed adjacent to and extending through the work support, a bender adjustably fixed to said carrier and an actuating device on said driving shaft cooperating directly with said bender carrier to force the material positively into the path of the needle.

(3. A blind stitch ing, in combination, feeding mechanism, nism located and operating beneath the work support, a driving shaft also located beneath the work stpport and extending transversely to the line of feed, a bender, a bender carrier, a fulcrum for said carrier located adjacent to the work supportand extending at right angles to the line of feed, and an actuating device on "said driving shaft, said carrier having an arm projecting above said fulcrum and connected to said bender and an arm projecting below said fulcrum and cooperating directly with said actuating desewing 'machine includa work support, work vice.

7.,A buttonhole finishing machine including, in combination, a work support, a needle operating on one side of saidwork support, a bender, a bender carrier, mechanism acting positively upon the carrier to cause the force the" material into the path of the needle and'ineans engaging the convex surface of the bent material and cooperating v'ith thebender to hold said material bent during 'the passage of the needle therethrough, 'means for adjusting the bender on its carrier into suchrelation with the needle and with said engaging means that the neesupport, a driving;

dle will pass through one thickness only of the material.

8. A buttonhole finishing machine including, in combination, a work support, a needle operating on one side of said work support, a bender, a bender carrier, mechanism acting positively upon the carrier to cause the bender to force the material into the path of the needle and means engaging the convex surface of the bent material and cooperating with the bender to hold said material bent during the passage of the needle therethrough, means for adjusting the bender on its carrier and means for clamping the bender in adjusted position.

-9. A sewing machine including in combination, a work support, a needle operating at one side of said work support, a bender, a bracket carried by the work support at one side of said needle, pivoted arms supported by said bracket, said arms being laterally deflected, and jaws carried by said arms and cooperating with said,bender.

10. A sewing machine including in comstitch-forming mecha-- bin-ati'on, a work support, a needle operating at one sideof said work support, abender, a bracket carried by the work support at one side of said needle, pivoted arms supported by said bracket, said arms being laterally deflected, jaws carried by said arms and cooperating with said bender, a spring for forcing said jaws toward each other, and an adjustable tapered screw carried by sai bracketvand disposed between said arms for adjusting the distance between said jaws.

11..A sewing machine including in combination, a work support having a slot formed therein, a needle operating at one side of said work support, a bender, means for intermittently operating said bender to bend the material through the slo fi in the work support into the path of the needle, and receiving jaws located wholly below the port and pressed .yieldingly toward each other for holding said bent material during the entrance of the needle. 12. A sewing machine including in combination, a work support, a feeding mechanism, a needle operating beneath the work support in a direction substantially parallel with the line of feed, a bender for bending the material into the path of the needle, and relatively movable work receiving jaws lo-' cated beneath the work support and clamping said material between themselves and the bender during the entrance of the needle.

13. A blind stitch sewingmachine including, in combination, a work support, a'needle operating beneath "the work support, a bender, means Y said bender to bend the material into the path of the needle, movable work-receiving jaws cooperating with the bender to hold the material bent work supporting surface of the work supfor intermittently operating and a pair of relatively during the entrance of the needle, said jaws being located wholly below the work supporting surface of the work support, means tending to move .-tlltl jaws yieldingly toward each other and meansv for limiting such movement.

1 l blind stitch sewing machine includ-,

ing in combination, a work support, work feeding mechanism, a needle operating beneath he work support in a direction substantiall parallel with the line of feed, a bender for bending the material into the path of the needle, a bender carrier crumcd on an axis extending at right angles to the line of feed and being located above the work support on that side of the operating point toward which the work is fed, an lltttllls cooperating with the bender to hold the material bent during the entrance of the needle, said means presenting an opening for the material which extends downward and in the direction of the feed.

15. blind stitch sewing machine including ll] comhiinition, a work support, a needle operating on one side of said work support, means for tending the material into the path of the needle pomprising a bender, a supporttherefor, means for positively vibrating said support in predetermined time relation to the movement of the needle, means for-positively adjusting the bender on its support, and means for securing the bender in adjusted position.

it. A, sewing machine including in combination, work support a needle operating on one side of said work support, a bender, an arm on which said bender is mounted, a screw for adjusting the position of the bender on said arln. and a clamp for fastening said bender in adjusted position.

t7. blind stitch sewing machine for finishing butionholes comprising, in combination, a work support, work feeding mechanism. stitch-forming mechanism, including a needle, located and operating beneath the work support and covered thereby, a driving shaft also located beneath the Work support and extending transversely to the line of feed and the path of movement of the needle, means for actuating said needle from said shaft, a bender, a curved, rigid bender lever fulcrmned adjacent to the work support and extending both above and below the work support, the bender being rigidly but adjustably secured to said lever at its upper end, and a cam on the driving shaft directly engaging the lower arm 0 the bender lever and actuating the bender positively to bend the material into and hold it in the path of the needle so that the needle \vill pass'through one thickness only of the material.

18. A sewing machine including in combination,, a work support, a needle operating on one side of saidwork support, a bender, 21

ful-

the work support. a

pivoted lever having said bender connected to its free end, staggered forked arms on the other end of said lever. a shaft and a double eccentric on said shaft having members for respectively engaging said forked arms and imparting positive movements to said lever,

19. In a blind stitch sewing machine, the combination with a double eccentric 85 of a bender T2 and a pivoted bender lever 73 at one end of which the bender is rigidly secured while the other end is provided with staggered forked

arms

81, 82, and operating substantially as described.

20. A sewing machine including in combination, a work support, work fcedipgmeohanism, a needle operating bcneatlilthe said work support. a bender above the work support, a pivoted lever connected at its free end to said bender and extending at its other end beneath the work support, a fulcrum for said lever above th work support extending at right angles to the line of feed, a shaft heneath the work su iiport, and means carried by said shaft for directly engaging and positively operating said lever.

21, A sewing machine including in combination, a work support, a needle operating beneath the work support, a bender, a pivconstructed oted lever rigidly connected at its free end above the work support to said bender, the other end of said lever extending beneath shaft beneath the work support, an eccentric member carried by said shaft, said lever having a fork cooperating with said eccentric member. 1

A sewing machine including in combination, a work supportthaving a hollow slotted projection on its upper face, a needle operating beneath the Work support, a bender, a lever extending from said hollow slotted projection, means for connecting one end of said lever to said bender, a shaft beneath the work support. and means carried by said shaft for engaging and operating the other end of said lever,

A sewing machine including in combination, a work support having a hollow slotted projection on its upper face, a needle operating beneath the work support, a bender, a lever extending from said hollow slotted projection, a pivotal support for said lever attached to the walls of said projection, a shaft beneath the w'ork support, and means carried by said shaft for engaging and operating said-lever.

A sewing machine including in combination, a work support, a needle operating beneath the work support, a. bender for bending the material into the path of the needle, a hollow slotted projection formed in said Work support on the upper face thereof in the rear of the bender, a lever extending from said hollow slotted projection, a pivotal support for said lever attached to the walls of said projection, a shaft beneath the work support, and means carried by said ing, in combination, a work support, a driv- 65 shaft for engaging and operating said lever. ing shaft, a needle operating beneath the 25. A sewing machine including 111 combination, a work support, a needle operating beneath the work support, a feeding mechanism, a bender for bending the material into the path of the needle, a lever fulcrumed in the rear of said bender and at one side of the line of feed and movable substantially in a plane parallel to the line of feed, the free end of said lever being laterally deflected and connected to said bender, and means for operating said lever.

26. A sewing machine including in coml 5 bination, a work support, a needle operating beneath the work support, a feeding mechanism, a bender for bending the ma terial into the path of the needle, a lever fulcrumed in the rear of said bender and at one side of the line of feed and movable substantially in a plane parallel to the line of feed, the free end of said lever being laterally deflected and connected to said bender, and the other end of said lever extending beneath the work support, a shaft beneath the work support,iand means carried by said shaft for engaging and operating said lever.

27. A sewing machine including in combination, a work support, a needle operating 80 beneath the work support, a feeding mechanism, a bender for bending the material into the path of the needle, a hollow slotted projection formed in said Work support on, the upper face ,thereof in the rear of the bender, 35, and at one side of the line of feed, a lever fulcrumed in said hollow projection and extending therefrom, said lever being laterally deflected and connected to said bender at its free end, and the other end of said lever extending beneath the work support,.

a shaft beneath the work sup port,-and means carried by said shaft for engaging and operating said lever. y F

28, A sewing machine including in combii'lation, a work support, a needle operating beneath the work support, a feeding mechanism, a bender for bending the inaterial into the path of the needle, a hollow slotted projection formed in said work support on the upper face thereof in the rear of the bender and at one side of the line of feed, a lever fulcrumed in said hollow projection and extending therefrom, said lever being laterally deflected and connected to said bender at its free end, the other end of said lever extending beneath the work sup port, a shaft beneath the work support, means-carried by said shaft for operating said lever, a pressen'foht cooperating with 6Q the feeding mechanism, an arm pivotally supported by said hollow slotted projection, said arm beinglaterally deflected, and means for connecting said arm to the presser foot. 29. A blind stitch sewing machine includwork support, a feed bar, a feed dog carried thereby, means for reciprocating the feed bar bodily back and forth in a single plane,

a bender, connections between said shaft and said bender foloperating the latter to bend the material being operated upon into the path of the needle, and mechanism for raising and lowering the feed bar and dog joined to said connections at a point thereof intermediate the shaft and the bender.

30. A blind stitch sewing machine including, in combination, a work support, a driving shaft, a needle and needle bar operating beneath the work support, a bender, means for operating the bender to bend the material being operated upon into the path of the needle, a feed dog mounted independently of said bender, means for reciprocating the feed dog in a single plane located at an angle to the surface of the work support and mechanism connected to said driving shaft for raising and lowering said feed dog, part of said mechanism being common to and part being separate from the bender operating mechanism.

31. A blind stitch sew-ing machine including, in combination, a work support, a driving shaft, a needle reciprocating beneath the work support, a feed dog movable in a single vertical plane parallel to the line of reciprocation of the needle, means for reciprocating the feed dog, a pivoted bender oscillating substantially ina-plane parallel to the line of feed, and connections between said driv- 400 ing shaft and said bender for operating the latter to bendthe material being operated upon into the path of the needle, and mechanism for raising and lowering the feed dog joined to said connections at a point thereof intermediate the shaft and the bender.

32. A blind stitch sewingmachine including", in combination, a work support, a driving shaft extending transversely to the line of feed, a needle operating beneath the work support, a bender, connections between said shaft and said bender for operating the latter to bend the material being operated upon into the path of the needle, a feed dog, a feed bar to which the dog is secured and 115 which is movable in a single vertical plane, connections from said shaft to said bar for positively reciprocating the feed bar longitudinally back and forthin said plane and connections from the bender operating meehanism to said feed bar for raising and lowering the feed dog simultaneously with the bender.

33.. A blind stitch sewing machine including, in combination, a work support, work 125 feeding mechanism including a feed bar, a feed dog carried thereby, a presser foot co. operating with said dog, means for positively