US1296029A - Sewing-machine. - Google Patents

Description

F. E. WILSON.

SEWING MACHINE.

APPLICATION FILED DEcI24. 1914.

Patented Mar. 4, 1919.

6 SHEETS-SHEET I.

LQQGIOQQI F. E. WILSON.

SEWING MACHINE.

APPLICATION man DEC.24,1914.

Patented Mar. 4,1919.

Wm. .mY wmf@ ZIN/5222271 Patented M111". 4, 1919.

6 SHEETSMSHEEI 3.

F. E. WILSON.

SEWING MACHINE.

APPLICATION FILED nEc.24, 1914.

F. E. WILSON.

SEWING MACHINE.

APPLICATION FILED Dsc. 24. |914.

Patented Mar. 4, 12H9.

F. E. WILSON.

SEWING NIACHiNE.

APPLICATION IILED DEC. 24. 19|4.

Patented Mar. 4,1919.

F. E. W|LSN.

SEWING MACHINE.

APPLCION FILED UEC-24| 1914, 1,296,029 Pamfutvd Miu'. 1, ISHS).

E SHEETS-SHED 6.

FIG.

/7 il F1611@ I zzz/522127Z va section upon the llne 9 9 of Fig i :l n. WILSON, or CLEVELAND, omo,

A COIIBIPAII'Y'?` 0F QLEVELAND, 0

SEWING- ASSIGNOR TO THE WILSON DRESS-HOGE H10, A CORPORATION 0F OHIO.

MACHINE.

I Application ledl December tlon.

This invention relates generally to sewing machines and particularly to that class of such devices utilized for sewing fasteners to garments or to cloth.

More specifically the invention relates to a sewing machine 0f the button sewing type and it consists of suitable mechanism for operating preferably a plurality of needles, mechanism for controlling the IJthread supplied thereto, mechanism for forming a loop in the thread below the throat plate, mechanism for shifting the garment or material, mechanism for holding and shifting the fastener with the material, and mechanism for severing the thread after stitching in -one set of openings and for severing the thread after stitching in the other set of openings, suitable means for shifting from one set of openings to the other, and suitable mechanism for driving and operating the several arts. P The invention may be further brieiiy summarized as consisting in the construction' and combination of parts hereinafter set forth in the following description, drawings and claims.

Referring to the drawings, Figure 1 is a front elevation of the machine; Fig. 2 is a rear elevation; Fig. 3 is a top plan view; Fig. 3a is a top plan view of the end of the tongue 62 showing the opening lfor the needles; Fig. 4. is a section upon the line 4 4 looking in the direction of the arrows indicated in Fig. 1; Fig. 4a is a top plan view of the outer end of the work clamp with -the button clamp removed; Fig. 5 is a bottom plan view; Fig. 6 is a vertical section upon the line 6 6 indicated in Figs. l and 5; Fig. 7 is a section upon the line 7 7 indicated in the same figures; Fig. 8 is a bottom plan view enlarged, of the mechanism immediately under the throat plate or of the loop forming mechanism; ig. is 8; 4ig. l0 isa section upon the line 10 10 of Fig. 8; Fig. 11 is a detail section upon the line 11 11 of Fig. 8; and F ig. 12 shows a por- Specication of Letters Patent.

Patented Mar.. d, 1919. 24, 1914; serial No. 878,886.

tion of material' with a fastener, of the type .applied by this machine, secured thereto.

In carrying out the invention any preferred form and construction of machine may 'be employed so long'as it meetsV with the necessary'requirements, but an embodiment is shown which is in accordance with the inventlon and in describing this embodiment the several elements will be taken up for description.

Framework.

The framework oflthe machine comprises a main bed plate member 1 provided with the usual arm 2 of any preferred type. Other brackets and4 parts are secured to these portions for supporting and accommodating the several pieces of mechanism. 4

Forming a part of the arm 2 is a head 3 which 1s provided with the usual needle bar 4 0f any preferred type. Within the arm and the head is any suitable mechanism for conveying a reciprocating motion to the needlebar. A portion of this mechanism, however, will be referred to as it is connected to the main operating shaft, this drive consisting of an eccentric strap shown 1n Fig. 5 engaging an eccentric in the usual manner, the eccentric having a hub 5 secured to themain driving shaft 6;

Needles.

Loop forming mechanism.

The shaft 6 is supported in a bearing 11 on the underside of the bed to the right, as h5 shown in Fig. 5, and another bearing 12 toward the head end of the machine but back of the needles, as shown in Fig. 5, and 4 lthis shaft is provided between these bearings and preferably between the eccentric 5 and the bearing 12 with a pair of worms 13 and 13 for a purpose to be described. Forward of the bearing 12 this shaft 6 tits into an opening in a hub 14 of a gear 15, the shaft being secured in this hub by a pin 14. The hub 14 is provided with an extension 16 lextending out through a suitable bearing bracket 17 at the left end of the frame, as shownl in Figs. 1, 2, 5, 8, and 9, Where it is provided with a gear 18. This gear 18 meshes with the outer1 looper hook gear 19 supported upon the outer looper hook. shaft 20, shown in Fig. 9, supported in the bearing bracket 17. The inner face of the gear 19 is provided with a cam member 21 having a cam face 22 for a purpose to be described. 4The inner end of the shaft 20 is 4provided with a hub 23 carryin an outer looper 24 having a looper .hoor 25, this looper hook cooperating w1thV the outer needle 8in the formation of the stitch'.

In like manner the gear meshes with a ear 26 mounted` upon a shaft 27.supported 1n the bearing 12 and the bearing 28 shown v parts being a duplicate ofthe looper hook -in Iig. 9. .The projected end of this sha'ft 27 -is provided with a looper hub 29 carrylng a looper 30 having a looper hook 31, these .parts already described except that the .hook 31 cooerates with the inner needle 9. On the opposite side of the bearing 28 the looper shaft 27 is provided with a' cam member 32 having a pebripheral cam 33, for a purpose to be desem d, and an end face cam 34 also for a purpose to be described.

' Loop pulling mechanism.

It is necessary inthe formation oi. the stitches and after the formation of the loop topull the loops to the rear of the machine and down, so that they will not interfere with the formation of other loops and so thatthe pull of the material or cloth will not distort the loops in the formation of the stitches and this mechanism comprises a pair of.- devices one' foreach needle and looper and operated by the same mechanism, and

the description will'now be confined to the construction of one of these hooks and the operating mechanism for both. One of'these hooks is clearly shown in Fig. 8.

Secured to the underside of the main bed` 1 to the rear lof the throat of the machine is a guide block 35 having a guide-way 36 there-L with a pin 42 passingthrough a slot 43 in the guide block 35 and adapted for engagement in an open-ended slot 44 arranged in the end of a lever 45 pivotally mounted upon a' suit'-I able screw 46 secured tothe underside of the bed. This lever engages back of a guide plate 47 secured to the underside of the frame and having a guideway 48 thereinfor receiving a slide 49 having a cam engaging lfoot 50 arranged in the path of the cam 33,

these parts being clearly'shown in Fig. 11 and the arrangement being such that upon the rotation of this cam 3.3 the lever 45 will be shifted and the hooks will be .moved transversely of the bed of the machinev In order to move the hooks into engagement/with the` loops when they are drawn down bythe loopers, I provide a pair of slides 51 and 52 arranged in suitable guideways, and the f ormer is provided with a cam engaging vportion 53 for engagement with the cam 22'carried by the outer looper gear \19, Whilethe latter 52 is provided with a ca m engaging portion 54 for engagement ivlth the side face cam 34 mounted upon the inner looper driving-shaft -cam member 32. Each of these slides is provided with a suitable lip 58 engaging under the corresponding hook member 38 to form a guide for the same,. these hook members being guided 'aga-mst the undersideoi1 the throat plate. The t1ming of these parts is such that when the needles move down and 'the threadloop 1s engaged by thelooper hooks l the. cam

faces22 -and 34 are in such a position that the slides 51 and 52 are outward, as shown l111 FigfS, and as the. looper hooks 'continue their further operation, these same cam faces cause the hook members to v,move inward so that their hooks 39 engage the loops above the loopers as the parts are shown in Fig. 8. The cam 33 then causes the shifting of the lever45 against the tension of its sprin 45 and the loop lengaging hooks 39 pul the loops transversely of the. machine as the parts are` shown in Fig.4 8, or pullv them backward as the machine stands normallv. The looper -hooks then engage othery loops formed 'by the needles and at the proper time the cam faces 22 and 34 release the loop engaging hooks to their normalvtendency. andthe move outward and' release the loops which t ey have previously engaged,.the contlnual operation of themachme merely being-a repetltion of the voperationalready described.

I n orderto back up the needles against the action of the looper hooks a suitable separator block 56, Fig. 8, is secured to the underside of the throat plate and is adapted -to pass between the two needles which miss the edges of thisblock in their downward movemen Work lanal fastener clamping mechanism.

In order to hold the work and the fastener or other article, suitable mechanism is provided. This mechanism comprises a work clamp supporting member 57 adapted for endwise nd oscillatory movement upon the finished face yoi? a portion of the main bed plate 1. In order to permit these two movements and to .ide the member 57, it is providedwith alongitudinal slot 58 receiving af screw 59. Secured to the forward end -of this Work clamp4 supporting member is a work shifting tongue 61 preferably of thin steel having a serrated portion 62 adapted to be located under the cloth or other material 5 to which the fasteners are to be secured.

This serrated portion 62 is provided with openings 63 and 64, as shown in Fig. 3, and these openings are ofa dimension such that the edges of the tongue at these openings will not interfere with the needles as the clamp is moved. The work clamp supporting member is provided with tending ears 65, Figs. 1 and 4 particularly, and these ears 'receive a pin 66 upon which is pivotally mounted a work clamp member 67 having a rearwardly extending-portion 68 passing between upwardly extending guides 69 at the rear and adapted to be forced upward by Vmeans of a' spring 70 arranged verticallybetween the rearwardly eX- tending portion 68 and the supporting member, as shown iii Fig. 1. This ives a tendency to the work clamp mem er to move downward at the left end as shown in Fig. 1 Any lost motion in the pivotal mounting of the work clamp member 67 is ta'ken u by an additional spring 7l arranged horlzontally between the end of the rearwardly extending portion 68 and the arml 2 of the machine. This spring also exerts the'tendency to give the member a counter clockwise movement, as shown in Fig. 1.

Secured to the end of the work clamp member 67 by means of screws 72 is a Iblock 73 carrying a work clamp 74, the end of which is flat and engages above the openings 63 and 64 in the work clamp tongue 61. The flat end of this work clamp 74 is provided with suitable openings 75 and 76, the former having outwardly extending notches 77 arranged near the ends of the opening, and the latter having notches 78 similar in all respects to the notches 77. The opening in the work clamp is of a shape such that it will receive and guide the fastener onto the material so that the fastener clamp linger may engage the fastener and force it through this opening against the material. The fastener represented by in Fig. 12 is of such size and shape that the notches 77 and 78 form openingsbeyond the eyes of the fasteners for the needles in the formation of the stitches. The needles are so spaced that one is in an eye and the other is outside of the opposite eye on one downward movement and vice versa on the next downwardly movement. In other words, the stitches are formed alternately in and out of the opentheblock 73 is a pair of ears 8O carrying a a pair of upwardly exmechanism above the machine is adapted to receive a ings. The metal between the openings 75' The clamping mechanism, including the fastener clamp andthe cloth or materialV clamp is raised by means' of a pin 87 carrying an arm 88 to be manipulated by mechanism :to be later described..- It is 'obvious that when the ai'm 88 is raised the fastener clamprng member will be elevated first and when it has reached the limit of its operation, resulting from the complete 'compression of the spring 84, the work clamping work tongue 61 will be elevated from the work, the fastener which has been secured to the material passing down through the openings 75 and 76 and the slot 79. i

Worf: and fastener clamp operating mech- It is necessary to impart the proper operation to the work clamp in order to. move the material and the fastener so as to cause the needles Aand the loopers to form the stitches, and this mechanism will now be described.

Extending downward from the underside,

of thel frame is a pair of bosses 89 arranged to one side of the driving shaft and each provided with a reduced bearing portion 90. The rear oneof these 'bearing portions 90 receives a gear hub 91 provided with a worm gear 92 adapted to mesh with the worm 1'3 mounted upon the driving shaft 6, while the bearing portion 90 toward the front of the gear hub 93 carrying a worm wheel 94 meshing with the worm 13 also mounted on the driving shaft 6. The rear gear hub 91 is provided with a cam disk 95 `secured 'to this hub by meansv of bolts 96 threaded into the hub and passing through slots 97 in the disk, these slots being arc-shaped and permitting the adjustment of the cam disk with respect to the hu-b. The disk and the gear hub are held in place on the bearing portion 90 by means of a suitable screw 98. The upper face of this cam disk is provided with a cam groove 99, shown in dotted lines in Fig. 5, and of the proper configuration to give the proper stitch forming motion to the mechanism which will now be described and tween this cam groove and the work and fastener clamping mechanism already described. y l 'A Engaging in the groove 99 is a roller 100, shown in dotted lines in Fig. 5, and rotawhich operates beclamp member 67 is a plate -115 providedv tably mounted upon a crank arm 101 keyed to the lower end of a shaft 102 mounted in a suitable standard 103 extending above the bed. The shaft 102 is provided on its upper end above the 'bearing 103 with a crank arm 104, shown in Figs. 1, 2, 3, 4, 5 and 7, and I this lever is provided .wlth a slot 105 in its upper surface, and this slot is engaged by the head 1 06, shown in Fig. 6, of a' bolt 106 extending throughv a slot 107 in a crank arm in Fig. 4, arranged lin the clamp supporting' member 57 to the rear of the pivot screw 60. 1t will be seen from the foregoing construction that upon the operation of the cam disk 95 the crank arm 101 will be rocked and with it the-shaft 102, this operation conveying a rocking movement to the crank arm 104 thereby. transmitting a rocking movement to the crank arm 108 which, through its connection with the lever 112, causes the work clamp supporting member 57 to be moved longitudinally on the bed, and since this lon-4 gitudinal movement is conveyed to the -work and fastener clamps the work and fastener will be reciprocated under the needles in the formation of the stitches in an obviousV manner.

It is also necessary in securing the ers to the-material to have the work clamp shift from one set of holes'to the other when only two needles are utilized,.and this mech-` anism will now be described.

Secured to the upper face ofthe work with a longitudinal slot 116 adapted to receive la block 117 loosely mounted on the shank of a bolt 118 extending through the block 117, through a slot 117 in the work clamp member 67 and threaded into the work clamp supporting member 57. A spring 119 is arranged between the head of the bolt 118 and the block 117 causing the block to be held within the slot 116 and against the upper surface of the work clamping member 67. P ivotally mounted upon the bolt 118 above the work clamp supporting member 57 is a link 120 engaging piyotally.

the shank'of a flanged sleeve surroundmg the shank 121 of a clampin bolt 122 which passes-into'a T-shaped s ot 123 in an arcshaped crank arm 124 where itl is rovided with a T-shaped head 125. This olt 122 serves as a means for permitting thisl bolt to be rigidly held at any suitable point inthe arc-shaped slot 123 and. still permits the link 120 to swing thereon. The arc-shaped crank arm is mounted on a vertically disposed and is connected lto operate a sleeve fastenshaft 126 extending through .the bed to the underside thereof vand there rovided with an operating arm 127 carrying a friction roller '128 engaging in a cam groovev 129, shown in dotted lines on a cam disk 130.' This cam disk is provided with arc-shaped slots 131 lnearthe center for receiving securing.

bolts 132 threaded into the gear hub 93, this disk and the gear hub being held in place by al suitable screw 133. The cam groove is of the proper configuration to give the lever 127 .a slight rockingmovemnt first in one direction and then in another for each revolution of the disk, whichwill transmit the proper rocking movement to the arc-shaped arm 124 so that the link 120 will shift the work and fastener clamp on the pivot screw 59 back and forth to bring the pairs of holes 1n proper posltlon with respect tothe needles 'and at the proper time in the cycle of operations of the machine.

Thread manipulation amd control.

The thread is led from any suitable source to an opening 134'in a thread guide stud 135 secured to the rear vof the arm of the.

machine and from thence to any suitable double 4thread tension device 136 from whence it is led through a 'suitable eye in a thread guide stud 137 to a second double thread tension device 138 of any preferred construction, the thread passingl around a pin 139 which forms a part ofthis tension device. The thread is then led through an opening 140 in a thread guide '141 secured to the top -of the arm of the machine. The

threads are then separated .and led acrossthe top of a presser stud 142 secured in the top of the armand through a pair of openings 143 arrangedin a guide plate 144 integral'with a stud 145 secured in the top of the arm. The threads then pass back of a pair g of spaced studs 146 and 147 andfrom thence to any suitable guiding mechanism not shown, but leading the thread down to the needles 8 and 9.

t Thread .pall/ng meemmsm.

It is essential that a supply of thread for the beginning of the stitching operation be drawn through the tension devices 136 and 138 from the spools or other supply, 'and this mechanism consists of anger148 bent up at the end of a rod 149 secured in the upwardly extending arm 150 secured to the shaft 151 by means ofa set screw 1-52, as shown in Fig. 2. Secured to the shaft 151 to the left of the arm 150, as shown in Fig. 2, is -a sleeve 153 carrying an arm 154'substantially at rightangles to the arm 150. This sleeve 153 is heldin place on the shaft 151 by a suitable set screw 155. Pivotally connected in the outer end of the arm 154 is a rod 156 extending down through a'suitable opening in the frame, as shown in Fig. 7, and guided therein, Ad justably mounted on this rod is a collar 157 held in any suitable position upon the rod by an adjusting screw 158. A spring 159 is arranged between this socket member and the upper surface of the bed of the machine so that an upward thrust is given to the rod and the normal tendency of the finger 148 is to remain in the position shown in Figs. 3, 6 and 7. Pivotally connected to the end of a lever 161 mounted at one end upon a fulcrum screw 162 secured in the.

frame is a link 161 pivotallyA connected at the upper end to the collar 157. Intermediate its ends this lever is pivotally'connected to a shifting bar 163 carrying at its lower L end a pin 164 projecting inward under the cam disk and there provided with a friction roller adapted to engage cams 166 carried by blocks 167 each provided with an arc-shaped slot for receiving a securing bolt 168; This construction is shown in bottom plan in Fig. 5. In order to hold the shifting bar 163 in proper position s o that the roller 165 will move in a vertical direction, a guiding pin 169 is provided on the bar, and this pin engages a slot 170 in a guide strip 171 having a right angle portion 172 secured to the frame by suitable screws or in any other preferred manner.

From the foregoing mechanism it will be seen that as the machine operates, the thread pulling device will be shifted, and the nger 148 will draw upon the thread, but to prevent the thread from being drawn through the needle, thread clampingmeans must be provided between the tension devices and the needles, and this mechanism will be later described, but when the thread is held between the finger 148 and the needles, this finger when operated will pull the thread from the spools or other supply.

Thread clamping means. Mounted upon the upper face of the arm of the machine is a stud 173 carrying a lever- 174 pivoted in the stud and carrying at one end a clamping block`17 5 pivoted at its center in the end of the arm upon a pin 17 5. This block is provided with a flat bottom edge extending transversely of the arm and arranged to engage both threads and force them down against the pressure block 142, the block being adapted to swin and equalize the tension on the two threa s. The opposite end of this lever engages a coil spring 176 which in turn engages suitable nuts 177 secured to a vertically movable rod 178 guided in a suitable ear 179 at the upper end and extending through the'bed to a point above the gear hub 91.where 1t is adapted to engage cams 180 mounted upon the upper face of this gear hub. These cams 180 are shown in Fi 7 and are arranged on the gear hub'91 geek of the ear hub shown in section in this figure. -T e arrangement of the clamping block 175. will these cams 180 is such thatupon the rotation of the gear hub the rod .178 is raised and the lever 174 is rocked yieldingly sothat the clamplng. block 175 is forced with a yleldln pressure against the thread. This holds t e threadat 'this point. This actuatingof the rod 178, however, is not the actuatlon which is utilized in pulling the thread from the supply as just described but is one which 1s utilized in cutting off the thread, as will later appear. The o eration of this h olding means for the threa pulling operation 1s brought about by means of an eccentric groove 181 provided in a cam member 182 secured to the shafty 151. This cam groove receives a pin 183 secured inI a collar 184 fastened to the rod 178, the arrangelment being such that upon the rocking of the shaft 151, and the throwing of the finger t0 Jthe left as shown in Figs. 6 and 7, be brought down upon the thread before this finger creates any great pulling action on the thread, but after the block engagesthe thread will pull the thread through the tension devices from the supply. v

Thread cutting mechanism.

The present machine is specifically initended in the embodiment shown toV sew on articles having four thread-receiving holes and the sewing mechanism is so constructed that the machine will sew with two needles in two holes before sewing in the remaining two holes, one needle in one hole the other being on the outside of the other hole, and in transferring from one pair of holes to the other, it is essential that the thread be severed after sewingin the first set of holes, as well as at the close of the sewing in the last pair of holes, and this mechanism comprises a guide plate 185 secured to the underside of the bed late near the throat plate and having a gui eway 186 therein for receiving a severing block 187 which is pro- 110 vided with a stud 188 projecting through a slot 189 in the plate 185 and extending into an opening in a lever` portion 190. This lever portion 190 is provided with a screw 191 passing through a slot 192 in anoperat- 115 ing lever portion 193. This screw clamps these two parts together. Both of the parts are provided with another slot 194 for receiving the shank of a fulcrum screw 195 which is rigidly secured in the frame. The 1330 end of the lever portion 193 is provided with a hook or cam engaging portion 196 adapted to coperate with a pair of peripheral cams 197 which are diametrically disposed upon the periphery of the cam disk 130. 125

Secured to the severing blockv are the cutting devices, and each comprises a shank 198 having at the end thereof a laterally and inwardly extending hook forming a transverse severing edge 199. These hooks are ar- 13e tends ranged so that the edges extend inward in the path of. one of the portlons of the thread as theloo is drawn to the rear by the loo er v and. in or er to cause the thread to'be ui ed Ainto this cutting edge each is provide with 8, but when the .cam engaging portion 196 is in engagement upon the periphery of one of the cams 197 this block is moved down as shown in this figure, and the hooks stan 1n position so that when the cam 197 moves from under the cam engaging portion these hooks catch one of the portions of the thread as it passes down around the looper and severs the same. a

In severing-the thread 1n the manner ]ust described, it is essential that it shall be' more or less taut and that the cutter hooks when pulling against the thread may not draw the thread from'the spools or other supply and the thread is held through the instruof the machine.

mentality of the rod 178 engaging one of the cams 180 at this particular tlme and causing the tension block 175 to engage the threads and prevent the pull from the thread supply. lllechansm for p'LtZZi-n oversapplyl of thread back thro/ug'v the needles.

'It is essential that the jextra vsupply of thread utilized in 'formin lthe loop and extending through the need es after the severingoperation, be drawn back through the needles so that the free cnds extending from the articles, 'when sewed, will not be too long l and unsightly, and this is broughtabout by meansof thread pulling device arranged be-v tween the thread clamping mechanism `and the needles and it comprises a shaft 202 mounted in lalinernent with the shaft 151, as shown in Fig. 2, on the back side of the arm andsupported in the bearing -203 which also supports the end of the shaft 151, and an ear 204 extending rearwardly from the head This shaft `is provided with an arm 205 keyed thereto and havin a lug v206 extending behind a thread pul lever 207 which is provided with a 'sleeve portion 208 loosely mounted upon the shaft 202. The pull lever is provided withl a portion 209. extending in the opposite direction and is connected to a spring 210 arranged between it and some stationary part of the frame. The upper end of the pull lever 207 is'provided with a rod 211 bent in a horizontal direction above the arm and provided with an upturned finger 212 adapted'to pass between the studs 146 and 147. The shaft too great a resistance against the linger 212.l

yThe shaft 202 may be operated inany suitable manner, but I have hown an operating lever 215 with an eye 21 at the up er end' which may be connected to any suita le foot treadle not shown. When the thread is properly placed upon the machine, it is led to the right of the pins 146 and 147 or to the right of the pin 147, as shown in Fig. 6, and behind or to the left of the'finger 212, so that when this linger is pulled to the left by the mechanism just described ,the thread will be pulled between these two pins and will be drawn from the needle as the parts are properly timed so that the clamplng or tension thread. 1

` omplete operation..

-means to be conveyed to the lever 215 with the result that the vfastener clamp is raised and when it reaches the limit of its movement, the work clamp is raised and the ma-,

blockV 175 is engaging the terial or work may be placed upon the serrated portion 62. In the meantime, however, the finger 212 has pulled the thread Iback through the needle until there is just ashort end extending` out. The operator then lowers the member 7'4 and places a fastener in the guiding openings 75 vand 7 6 and the slot 79 so that it rests on thefmaterial and is held in this lposi-tion by the fastener clamp which is then released by a further release ofthe lever 215. y The operator then applies the power to the shaft 6' which rotates and -brings about theoperation ofl the several 130 has made a half revolution the roller 165 will engage one of the cams 166 and will cause a tension to be placed upon the thread carrying member,

through the parts connected therewith. In the mean-tilne, however, the cam engaging portion '196 has dropped off the top of the lam and the thread has been severed and at substantially this time, or preferably a little later, the cam 130 causes the shifting of the .work clamp so as to bring the other holes of Ithe fastener into alinement with the needle. Stitching takes place in this set of holes. At the end of the stitching in this set of holes cams operate to sever the thread and return the Work clamp to its original position.

Having described my invention, I claim.

l. In a sewing machine a frame, a needle carrying member, a needle carried thereby, a work clamp having an opening for receiving a fastener and forming guiding means for guiding the fastener onto the material, .means for shifting the work and the fastener in 4the formation of the stitches, and means for operating the several parts.

2. In a sewing machine a frame, a needle a needle carried thereby, a Work clamp having a recess therein for receiving the fastener and for guiding it to the material, a fastener clanp adapted to clamp the fastener upon the Work and move the sameout of the Work clamp at the end of the sewing operation, means for bringing about a rela-tive movement of the work and the needle in the formation of the stitches, and means for operating the `several parts.

3. In a' sewing machine, a fra-me, a needle bar, a needle carried thereby, a Work clamp having a suitable guide for receiving the fastener, means for 'bringing about such a relative movement of the need-le, the Work and the fastener, that the stitches will be formed in the thread receivingopenings of the" fastener beyond the edges thereof in the material. and means for bringing about an-` other relative movement of the needles, the work and the fastener, to cause the stitches to be formed first in one group of thread receiving openings of the fastener and then in the other.v

4. In a sewing machine, a frame, a needle, means for supporting the same, a work clamp having a'fastener-receiving opening, a fastener clamp. having a portion engaging in said opening adapted to force the fastener 4against the material during the sewing operation -and to force the same through said opening at the end of such operation, means for causing said fastener clamp to force the fastener upon the material during the sewing operation, and means for operating the several parts.

Y 5. In a sewing machine, a frame, a needle, a supportv therefor, a comlbined work and fastener support, and manipulating mechanism comprising-a Work clamp having a fastenerreceiving recess, a

ing with the Work clamp and having a por- 4ing to the movement .of the work v stitches and fastener clamp coperattion for engaging the fastener and clamping the same upon the material during the sewing operation and for forcing the fastener outof the opening at the end of the sewing operation, means for conveying an additional motion thereto to shift the fastener and the material to cause the needle to engage in the several openings, and means for operating the several parts.

6. In a sewing machine, a support therefor, a combined work and fastener support, land manipulating mechanism comprising a work clamp movably .mounted upon the frame and having a fastener-receiving recess, mounted upon said work clamp and having a portion engaging in said opening for clamping the fastener upon the material, means for conveying a stitching motion to this manipulating mechanism, means for conveying a transferring motion to this mechanism to causethe sti-tch to be formed in the several openings, and means for operating the several parts.

In a sewing machine, a frame, a needle, a support therefor, a Work clamp support mounted for movement in one direction and for oscillating movement in another direction, a work clamp carried by said support and mounted for movement in a vertical plane, said work clamp having a fastener recess, a fastener clamp mounted upon said support and having a movement correspondclamp, means normally tending to force said clamps onto the material, means for conveying the proper movement to said support, and operating means for transmit/ting the proper actuation for each of said operating means at the proper step in the cycle of operation of the machine.

8. Ina sewing machine, a frame, a needle, a support therefor, a work clamp support mounted for movement in one direction and for oscillating movement in another direction, a work clam-p carried by said support and mounted for movement in a vertical plane, said work clamp having a fastener recess. a fastener clamp pivoted upon said work clamp having a movement in a plane corresponding to the movement of the wor i clamp, means for shifting said entire clamping mechanism in the formation of the conveying a further movement to transfer from one stitch-receiving opening of the fastener to another.

9. In a sewing machine, a dframe, a needle bar, a pair of needles carried thereby, a pair of stitch-forming devices coperating with said needles, means for operating the same, work and fastener clamping mechanism, means for shifting the same, and thread severing mechanism comprising means engaging the thread between the stitch formers and the needles for severing the thread, and

a frame, a needle,

means for holding the'thread against the vac-v Work. and fastener clamping mechanism,'

meansy for shifting the same, and thread severing mechanism comprising means enl 1ov gaging the thread between the stltch formers andthe needles for severing the thread, and

a suitabley clamp for holding the thread against the action of the severing devices.

11. In a sewing machine, a frame, a needle bar, a pair of needles carried thereby, a pair L of stitch-forming devices coperating wlth said needles, means for operating the same,

work and fastener clamping mechanism,`

means for shifting the same, and thread ,severing mechanism compr1sm means engaging the thread between the stitch formers l and the needles for Severin `the thread, and

a suitable clamp for hol ing the thread against the action ofthe severin devices,

and comprising an operating inem er and a clamping strip supportedto exert an equal tension upon the t reads.`

12. In a sewing machine, alframe, a needle 1 bar, a pair of needles carried thereby, a pair of stitch-forming devices coperating with said needles,means for operating the same, work ,and fastener' clamping mechanlsm,

` -means for shifting the same, and thread lseverlng mechanlsm comprismg means -engaging the thread between the stltch formers and the needles for severin the thread, and

la suitable clamp for ho ing the thread against the action of the severing devices, and comprising an operating lever and a clamping strip pivotally mounted therein adapted to engage the threads.

13. In a sewing machine, a frame, a needle,

l supporting and operating meansl therefor,

stitch-formin mec anism, a combined work and fastener olding mechanism, means forbringin A about a relativey movement between the nee le and said mechanism for the stitching operation and for the transfer from one opening to the other, and means for severing the thread^after stitching in each opening.

14. In a sewing machlne, a frame, a pair of needles, means for supporting and actuating the same, a pair of stitchforming devices coperating with said needles in the formation of the stitches, .a combined work and fastener clamping and supporting mechanism, means for actuating said mechanism to cause the needles and st1tch-forming devices to form stitches in one group of openings of a fastener, means for bringing about a relative movement between the needles and said work and fastener supporting and group o means for severing stitching operation. v

15. In a sewingmachine, 'a frame, a pair o1" needles, meansrfor supportin and actuating the same, a pair ofl stitchorming devices coperating with said needles in the formation ofthe stitches, a'combined work andf fastener clamping and supporting mechanism, means foractuating said mechanism to cause the needles and' stitch-forming devices to form stitches in one group of o enings of a fastener, means for bringln a out a relative movement between the nee es and said work and fastener sup orting and clamping mechanism to cause t e needles to engage 1n another group of openings, means the threads after each for severing the threads after each stitching operation, and means for drawin the suro plus thread back through the nee' es before beglnnin each stitching operation in each thread-receiving openings of the fastener.

16. In a sewing machine, a frame, a pair of. needles, means for supportin and vactuatlng the same, a pair of stitchorming dev1ces coperating with said needles in the formation of the stitches, .a combined work and fastener clamping and supporting mechanism, means for actuating said mecha- -nism to cause .the needles and stitchlforming devices to form stitches `in one group of `openings of a fastener, means, for bringing il out a relative movement between the needles and sald work and fastener supporting and clamping mechanism to. cause ,the needles to engage in another oup of openings, means for severing the t reads 'after each stitching operation, and means for drawing the surplus threadback through-the needles 4before beginnin each stitching operation in each group of t ead-receiving openings of the fastener, and comprising a thread-pulling device, and means for operating the same'.

17. In a sewing machine, a frame, a .pair of needles, means for supporting and actuating the same, a pair of stitch-forming devices. coperating with said needles in the formation of the stitches, a combined work and fastener. clamping and supporting mechanism, means for actuatin said mecha-` nism to cause the needles and stltch-forming devices to form stitches in one group of o enings of a fastener, means for bringmg a out a relative movement between the needles and said work and fastener supporting and clamping mechanism to cause the needles to engage -in another group of openings, means for severing the threads after each stitching operation, and means for drawing the surplus thread back through the needles before beginning each-stitching operation in each group of thread-receiving openings of the fastener, and comprising athread-pulling device, and means actuated by the work and fastener clamp for operating the same.

18. In a sewing machine, a frame, a pair of needles, means for supportin and act-uating the same, a pair of stitchorming devices cooperating with saidneedles in the formation of the stitches, a combined work and fastener -clamping andl supporting mechanism, means for actuating said mechanism to cause the needles and stitch-forming devices to form stitches in one group of o enings of a fastener, means for bringin a out a relative movement between the nee les and said work and fastener supporting and clamping mechanism to cause the needles to engage in another group of openings, means for severing the threads after each-stitching operation, and means for drawing the sur- -sides of the thread, and

through the needles previous plus thread back through the lneedles before beginning each stitching operation in each group of thread-receiving openings of the fastener, and comprisin a pair of spaced studs having bothv threa s upon one side, a thread pulling finger engaging the opposite means actuated by the work clam for moving said finger between said stus to draw the threads back t0 the stitching operation in each group of (ipenings.

In testimony whereof, I a X my signature in presence of two witnesses as follows.

FRANK E. WILSON. Witnesses:

G. O. FARQUHARsoN, C. H. SHoTzBARGER.

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