US1111132A - Stitch-forming mechanism. - Google Patents

Description

0. B. BROWN.

STITCH FORMING MECHANISM.

APPLICATION FILED 00119, 1911. 1,1 1 1,1 32 Patented 801111221914.

2 SHEETS-SHEET 1.

WITNESSES:

THE NORRIS PETERS 50., PHOTU-LITHQ, WASHINGTON, U. L,

WITNESSES:

O. E. BROWN.

STITCH FORMING MECHANISM.

APPLICATION FILED OCT. 19, 1911- Patented Sept. 22,1914,

2 SHEBTS-SHEET 2.

IIVVEIVTOR lzygm I TTOR/VEY THE NORRIS FETERS 17f! nHDTO-LITHQ. WASHINGTON. L). C.

OTIS E. BROWN, OF BROCKTON,

MASSACHUSETTS, ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY, A CORPORATION OF NEW JERSEY.

STITCH-FORMING MECHANISM.

I Specification of Letters Patent.

Patented Sept. 22, 1914.

Application filed October 19, 1911. Serial No. 655,518.

To all whom it may concern:

Be it known that I, Orrs E. BROWN, a citizen of the United States, residing at Brockton, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Stitch- Forming Mechanisms, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an improvement in stitch-forming mechanism, and particularly to that class adapted for handling a waxed thread; and it has for its object to increase the durability and certainty of action of the mechanism in the casting of the needle-thread loops about a lower thread.

According to the present improvement,

the loop-taker is constructed preferably in the form of, a shuttle havinga loop-seizing beak formed with a shoulder adjacent its throat adapted to be entered and engaged by a rotary shuttle-driver between which and the beak the thread-loops are introduced by a loop-controller disposed adjacent the path of reciprocation of the needle. The needle is preferably of the open-eyed or barbed type, and the loop-controller performs the additional function of preventing the thread-loop by the needle under the action of the shuttle.

The shuttle is preferablygiven a plurality of rotations for each reciprocation of the needle and is formed with an eccentric thread cavity in which is journaled a nonrotary thread-case whose movements toward and from the work under the action of the shuttle causes it to draw off a supply of lower thread in opposition to the stitchsetting action of the take-up to insure uniformity in the positioning of the interlock of the upper and lower threads and prevent disturbance of one stitch by the setting of the succeeding stitch.

According to the present invention the shuttle-race is formed at the face adjacent the needle with a fixed bearing lip interrupted adjacent loop-seizing position to permit the proper handling of the needlethread loops, and has also fitted therein a wearing ring having a thread clearance cut in its operative face affording with the fixed bearing lip a journal for the rim of. the shuttle. Means are provided for oscillating-the wearing ring so as to position its clearance cut for release of the needle-thread loop I as the shuttle reaches its cast-off position, and to advance the same so as to partially brldge over the gap in the shuttle bearing as the beak of the latter approaches and passes loop-seizing position, thereby steadying the shuttle at the critical point in its movement and insuring precision in the loop-seizing action.

The invention will be understood by reference to the accompanying drawings, in which- Figure 1 is a side elevation of the machine with the frame in section. Fig. 2 is a partial front end elevation of the lower portion of the machine with the needle mechanism wholly removed, and Fig. 3 a similar view omitting the frame and rep resenting a portion of the needle mechanism. Fig. 1 is an enlarged sectional elevation of the shuttle and its race. Fig. 5 is a perspective view of the shuttle and threadcase partly in section, and Fig. 6 a side elevation of the same with the needle and the loop-controller. Fig. 7 is a perspective view of the shuttle-race with the wearing-ring applied thereto. Fig. 8 is a rear side elevation of the shuttle audits driver. Fig. 9 is an enlarged perspective view illustrating the action of the loop-controller in deflecting a needle-thread loop into the shuttlethroat. Fig. 10 is a perspective view of one of the thread-case holding arms. Fig. 11 is'a perspective view of the shuttle-driver and a portion of the gear by which it is carried. Fig. 12 is a perspective view of one of the bearing-lip sections of the shuttlerace.

The machine is shown herein constructed as represented in my applications Serial Nos. 651,551 and 651,556, filed September 27, 1911, and has a frame comprising the hollow base 1, the tubular standard 2 and hollow overhanging arm 3 formed with the hollow head 4 and in which is journaled the main-shaft 5 carrying the balance-wheel 6 and belt-pulley 7. The main-shaft has fixed thereon by means of the set-screw 8 the hub 9 of the needle-actuating eccentric 10 embraced by the strap 11 connected through the pitman 12 with one. arm of the rocker 13 having a second arm 14 connected by means of the pitman 15 with a crank carried by the needle-actuating rock-shaft 16. The rock-shaft 16 carries at its forward end a cranlearm 17 connected by the pitman 18 60 resented more particularly in Figs. 4 and 5.

sion spring 47 pivotally with the collar 19 fixed upon the needle-bar 20 carrying the barbed or open-eyed needle 21 and journaled in the bearing bosses 22 of the-jogging needle-frame 23.

The needle reciprocates through the usual aperture in the throat-plate 24 and the upper thread n is laid within its throat by means of an eyed reciprocating thread-arm 25 working in conjunction with a vibratory thread-measuring hooked arm 26 which serves to engage the thread between the eye of the-thread-arm 25 and the needle aperture of the throat-plate to draw the samelaterally over the lateral finger 27 of the rigid thread-supporting arm 28 sustained by the bnacket-armhead 4. The shuttle 29 is in the form of a disk cut away on one side to form a throat or recess 30 and provided adjacent one end of said recess with the outwardly extending beak 31' having upon its inner edge and adjacent said recess a shoulder 32 for engagement of the shuttle-carrier.. As shownImore particularly in Fig. 4, the shuttle-beak 31 is slightly offset beyond the outer-face ofthe shuttle body.

wThe shuttle is shown provided near its outer .face with the peripheral groove 33 having a conical rear wall reversely inclined from the rearwardly extending conical portion: 34. The shuttle body is formedwith an eccentric cylindrical aperture 35 in which isjournaled the periphery of the cylindrical thread-case 36 formed at its inner end with a peripheral rib 37 entering a corresponding groove in the'shuttle body and having its forward end closed by a web 38 formed with the tubular bobbin supporting post 39. Confinedwupon'. the post 39 by means of the spring-controlled latch-lever 40 is the under thread bobbin 41.

At its outer end, the bobbin-case is locked Within the shuttle by'means of the segmental plate 42 let into and secured upon the Web 38 by means of screws 43' and having its outer edge extending slightly beyond the rim of the bobbin-case. The plate 42 is provided with a rigid thread-delivery arm 44 formed in its outer end with the guide aperture 45 and having pressed against its side "face-by means of the screw 46 the tenconnected by means o'fvthe pin 48 with the plate 42. Thelower thread t isled from the bobbin outwardly through the thread passage 49 in the wall of the thread-case and thence through the aperture 50 of the plate 142 from the mouth of which itis led between theinner side of the arm 44 and the tension spring 47 and thence through the delivery aperture 45 to the work, as repportion of the base 1 the footi51'of the V annular shuttle-race support 52 to the outer face of which is secured by means of the screws 53 the holding ring 54 having'secured to its outer 'faceby means of the screws 55 the segmental plates 56 formed with overhanging bearing lips 56. entering the groove 33 of the shuttle and "fitted-to the conical rearward wall of the" same.

Three of thesesegmental plates are shown,

with the adjacent extremities of those at opposite sides of the shuttle separated by a suitable space to permit the freemanipulation ofthe needle-thread loops by the shuttle at the upper side of the race and adjacent the loop-seizingposition-of the shuttle. The

inner edge of the holding ring 54 is formed with an annular groove 54 in which is fitted the wearing ring 57 having its conical inner face 57 fitted to the'rearwardlyextending conical face 34 of the shuttle andhaving in one side a clearance, out; 58 extending partly through the same. The wearingring 5i has-a backwardly offset an'd laterally extending rigid arm 59'-carrying a ball-stud 60 to be later referred to; 1 'r The shuttle-race support 3 52 ing flange 52 to which isfittedjone end of the carrying 'ring'61 having let' into-the opposite end the flange 62 of the 'shuttledriver 63, of which one extremity .64 is adapted for engagementwith the outwardly inclined end 30*- t and the other end portion: has, an external. recess=65 forming a shoulder 66' for engage? ment with theshoulder=32 of the shuttleof the shuttlethroat 30.

has at its rearward end an inwardly: extending bear-- beak. 'The foot-62 of 'the'shuttle-driveris secured inplace by means of the screw 67.

The carrying ring '61 is provided-intermediate its-ends with an external flange formed with gear-teeth 68' which is "confined in place by and confined in positionby the 'fiatheads 70 of the'bolts 7lq-to whose threaded rear= Ward ends are. applied the:nuts"72 having: in practice suitable means for locking the rotary shaft'? 5 journaled uponthebase 1 and provided with a bevel pini0n .76 meshing with a bevel wheel 77 of twice its diameter upon theyerticalshaft 78 jour naled within suitable bearings'in thehollow standard 2 and provided upon its Eupper'end 'with" the bevel-gear? 9; meshing with the similar gear 80 fixed upon the main-shaft 5. By the means just. described, the

shuttle-driver. receives two rotations for each slngle rotation of the ma n-shaft. As

means of the bushing ring 69 fitted within the bore ofthe shuttle-race supportthe shuttle-driver carryingring: 61" is journaled in slightly eccentric relation'with the shuttle, it .will be seen that its driving shoulders 64 and 66 alternately engage the shoulders 30*.and 32 of the shuttle so as to permit the needlethread loops to pass freely between the shuttle-driver and the shuttle in the casting of the same about the lower thread as fully. shown and described in the United States patent to l/Vheeler and Dial N01 328,165, of October 13, 1885.

The outer end 38 of the thread-case is shown formed with two apertures afiiording shoulders 81 and 82 for. engagement with the inturned extremities of the rigid holding arms 88 and 84 which are secured to the exterior of the shuttle-race support 52. In the lateral movement of the thread-case imparted by the rotation of the shuttle, the shoulders 81 and 82 are shifted alternately in engagement with said respective holding arms 83 and 84 which serve to prevent the rotation of the thread-case, the outer limb of the needle-thread loop passing the extremity of each of said holding arms across the apertures of the thread-case.

Tapped into the forward end of the base 1 is a fulcrum-screw stud 85 upon which is journaled the lower end of a vibratory lever 86 carrying at its upper end a stud embraced by one of the socketed ends of the divided link 87 .whose opposite end embraces the ball-stud 60 of the arm 59 carried by the wearing ring 57. The lever 86 is connected near its upper end by means of the screw-pin 88 with one end of the pitman 89 whose opposite end embraces the crank-pin 90 carried by the gear-wheel 73. Bythe connection just described, the wearing ring 57 is given an oscillating movement for eachrotation of the shuttle, and is so timed that the clearance cut or recess 58 assumes retracted position as the shuttle reaches its cast-off position slightly beyond that represented in Fig. 2, and advances toward loop-seizing position as the shuttle reaches its corresponding position as rep resented in Fig. 3. By this means, the clearance cut or recess is properly positioned to permit the free drawing u of the needle-thread loop cast off by the shuttle over the thread delivery arm 44 of the thread-case while the wearing ring advances thereafter so that the adjacent bearing portion is caused to partially bridge over the space between the upper extremities of the segmental bearing lips 56 when the shuttle advances to its loop-seizing position, thereby stea'clying the shuttle and insuring precision in the seizure of the succeeding thread-loop from the needle. To further facilitate the handling of the needlethread loops, the edge of the holding ring 5 1- is slightly cut away at 548 at its forward face, as represented in Fig. 7.

As shown and described more fully in m 65 pending application Serial No. 661,554, the

the lower end of the link take-up lever 91 is mounted upon the ful crum-pin 92 and carries upon its rearwardly extending arm 93 the stud 9 1 embraced by 95 whose upper end is entered by the stud 96 carried by the angle-lever 97 fulcrumed at 98 and carrying the roller-stud 99 which is adapted to enter the cam-groove 100 in the cam-cylinder 101 fixed upon the main-shaft 5. The needlethread is led from the source of supply over certain guide-rollers mounted respectively upon and independently of the take-up lever 91, and finally over the guide-roller 102 at the forward extremity of said lever and thence downwardly over a fixed guide-roller 103 to the eye of the vibratory thread-arm 25 and thence to the-fabric m, as represented in Figs. 1 and 2.

The material is punctured for each stitch preparatory to the upward thrust of the needle for seizure of the upper thread by means of the awl 104 carried by the reciprocating awl-bar 105 journaled in the head 4: of the bracket-arm.

As described more fully in my application Serial N 0. 651,556, lateral jogging movements are imparted to the needleframe 23, to cause the feed of the work by the lateral movement of the needle when in its upper position as represented in Fig. 1, by means of a train of mechanism actuated by the feed-cam 106 fixed upon theupright rotary shaft 78.

- Secured upon the needle-frame by means of the fastening screw 107 is the shank 108 of the loop-controlling blade 109 disposed intermediate the parallel vertical planes of movement of the needle and the loop-taker beak and whose thread-engaging upper edge 110 is disposed at the level of or slightly above the outer face of the shuttle-driver 63 and substantially parallel with the path of movement of the shuttle-beak at loop-seizing position. As represented in Fig. 9, the face of the loop-controller nearer the needlepath is cut away to afford clearance for the needle and forms with the part of the blade adjacent the shank a detaining shoulder to retard the casting off ofthe limb of the needle-thread loop extending between the needle-eye and the throat of the loop-taker in the loop-casting movement of the latter. 1n the advance movement of the loop-taker beak between the positions represented in Figs. 3 and 9, the outer limb of the needlethread loop is pressed downwardly by the inner edge of the loop-taker beak upon the top of the loop-controller which temporarily sustains the same to maintain the loop within the throat of the needle during the initial portion of the loop-casting action, and in the continued movement of the loop-taker, the said limb of the thread-loop is thrust upwardly by the loop-controller clear of the notch in the outer edge of the shuttledriver and beyond the shoulder 32 into the throat of the loop-taker along the inner edge of which itslips in the continued motion of the loop-taker to cast-off position, in a manner well known. In the continued movement of the loop-taker from the position represent-ed in Fig. 9, the lead of the said limb of the needle-thread loop becomes such as to cause it to slip off the loop-detaining shoulder afforded by the upper edge 110 and to be drawn along the cast-off face 109 of. the controller adjacent the needle by 7 therefore-varies with different adjustments of throw of the feed-actuating mechanlsm,

it is important that the loop-controller maintain its initialrelation withthe needle at all times. This is accomplished in the present machine by mounting the loop-controller upon the jogging needle-frame.

In the operation of the machine, the needle rises through the puncture made by the awl into the position represented in Fig. 1 in ;which the feeding action occurs and the upper thread is laid in the needle-throat by means of the thread-arm 25. As the needle descends, the take-up delivers slack thread and the thread-measuring arm 26 advances to release the thread. As the needle reaches the position represented in Fig. 3, with its eye slightly below the path of movement of the shuttle-beak, its thread-loop is entered by the point of the shuttle. At this time, the wearing ring 57 is in its advance position with the extremity of its operative surface 57 adjacent the clearance cut 58 substantially opposite the needle so as to bridge over the gap between the upper extremities of the bearing lip 56 and to steady the shuttle as it enters the needle-thread loop. As the shuttle continues its movement, the outer limbof the needle-thread loop is deposited on the upper edge 110 of the loopcontroller blade 109 while the needle continues its descent, thereby holding the upper thread within the needle-throat. and in the further traverse of the shuttle the threadloop is deflected over the shuttle-driver and into the shuttle-throat as before explained. In. performing the remainder of its loopcasting movement, the shuttle carries the.

needle-thread loop successively under the extremities of the thread-case holding arms 83 and 84.

extending from the same through the needle aperture in thethroat-pla te. About as the shuttle reaches cast-off'position, the wearing ring 57 assumes retracted position in which its thread clearance cut 58 is positioned rear-1 ward of the needle-path and in substantial register with the needle aperture of the thread-case arm 4A, thereby providing ample space for the drawing up ofthe thread-loop through the throat-plate by the take-up to facilitate the normal action of the latter in setting'the stitch.

The'parts are so relatively timedthat as the take-up completes its stitch-setting action the thread-case receives a quick downward movement constituting in the present embodiment the effective portion of the bodily lateral'movement due to itseccentric relation with the rapidly rotating shuttle, whereby the upper and lower threads are simultaneously drawn in the opposite directions for effectively and uniformly setting the stitches anddrawing off a lower-thread supply from the bobbin. In thisaction, the plural ,rotation of the shuttle relatively to the needle reciprocations performs an important part, in enabling the thread-drawing action of the threadcase to be begun and completed while the. upper-thread is taut under the operation of the take-up;

From the foregoing description, it is evident, that while the several features of the present improvement mutually cooperate to insure the certainty and effectlveness of action of the loop-taker in manipulating the lower thread, certain of such features are capable of use independently of others, and also that these several features are susceptible of material modification in construction and arrangement of parts without departure from the scopeof the present invention. i Q

, Having thus set forth the nature of the invention, what I claim is i v '1. In a. sewing machine, the combination with a reciprocating needle, and a needlethread take-up with means for imparting to the latter an operative stitch-setting movement for each reciprocation of the needle, of a circularly moving loop-taker, a lower-thread case j ournaled in and in eccentric relation with the loop-taker, means for restraining said thread-case against rotation, and actuating means adapted to impart to said loop-taker a plurality of rotations for each reciprocation of the needle,

the eccentricity of said thread-case being so disposed that in the rotation of the looptaker the thread-case is moved bodily in opposition to the stitch-setting action offthe take-up. a

2. In asewing machine, the combination with a reciprocating needle, of a circularly moving loop-taker provided with a loopseizing beak, a stationary race for said looptaker, a movable wearing piece mounted in said race to afiord a bearing member for the loop-taker and having on one side an up per-thread clearance recess, actuating means for said loop-taker, and means for operating said wearing-piece to position its clearance recess rearward of loop-seizing position in substantially the cast-off position of the loop-taker and advancing the same in the direction of movement of the loop-taker as the beak of the latter reaches its loop-seizing position. i

3. In a sewing machine, the combination with a reciprocating needle, of a circularly moving loop-taker provided with a loopseizing beak, a stationary race for said looptaker provided with a fixed bearing lip interrupted on the loop-seizing side of the race, a wearing ring journaled in said race to afford a bearing member acting in conjunction with said bearing lip to sustain and guide the loop-taker and having on one side an upper-thread clearance recess, actuating means for said loop-taker, and means for oscillating said wearing ring to position its clearance recess alternately at opposite sides of the loop-seizing position of the looptaker,

4. In a sewing machine, the combination with a reciprocating needle, of a circularly moving loop-taker provided with a loopseizing beak, a stationary race for said looptaker provided with a fixed bearinglip interrupted on the loop-seizing side of the race, a wearing ring journaled in said race to afford a bearing member acting in conjunction with said bearing lip to sustain and guide the loop-taker and having on one side" an upper-thread clearance recess, actuating means for said loop-taker, and means connected with the loop-taker actuating means for impartingoscillatory movements to said wearing ring and timed to move the part thereof containing the clearance recess in advance of the loop-taker beak as the latter passes its loop-seizing position.

5. In a sewing machine, the combination with a reciprocating needle, of a circularly moving loop-taker provided with a loopseizing beak, a stationary race for said looptaker, a wearing ring journaled in said race to afford a bearing member for said looptaker and formed with an upper-thread clearance recess, means including a rotary shaft for imparting operative movements to said loop-taker, a crank-pin carried by said shaft, and a connection between said crankpin and the Wearing ring for imparting oscillatory movements to the latter to position its clearance recess alternately at opposite sides of loop-seizing position and in advance of the loop-taker beak when in loop-seizing position.

6. In a sewing machine, the combination with a reciprocatory needle, of a circularly moving loop-taker provided with a loopjseizing beak formed with a shoulder ;cent said throat, a race for sustainlng and seizing beak, a stationary race for said looptaker a wearing ring journaled in said race to afford a bearing member for said looptaker and formed with an upper thread clearance recess, means including a rotary shaft for imparting operative movements to said loop-taker, a crank-pin carried by said shaft, a vibratory lever mounted upon a fixed fulcrum, a link connection between said vibratory lever and said wearing ring, and a pitman connection between said crank-pin and said vibratory lever.

In a sewing machine, the combination with a reciprocating needle, of a circularly moving shuttle having on one side a eripheral throat or recess and provided with a loop-seizing beak having a shoulder adjacent said throat, a race for sustaining and guiding said shuttle, a shuttle driver adapted for engagement with said shoulder of the shuttle-beak, shuttle-driver actuating means, and a loop -controller mounted adjacent and independently of the needle and in fixed relation to the path of reciprocation of the needle and adapted to deflect one limb of the needle-thread loop over the shuttledriver and into the throat of the shuttle.

8. In a sewing machine, the combination with a reciprocating open-eyed needle, and a laterally ogging frame in which the same is mounted to reciprocate, of a circularly moving shuttle having on one slde a peripheral throat or recess and provided with a loop- EtClJEL- guiding said shuttle, a shuttle-driver adapt ed to engage said shoulder of the shuttlebeak, shuttle-driver actuating means, and a loop controller fixed upon said jogging frame and arranged intermediate the paths of movement of the needle and the shuttlebeak and adapted to deflect one limb of the needle-thread loop over the shuttle-driver and into the throat of the shuttle.

9. In a sewing machine, the combination with a reciprocating needle, and a needlethread take-up with means for imparting to the latter an operative stitch-setting movement for each reciprocation of the needle, of a loop-taker mounted to move in a circular path upon an axis passing through the body of the same, a lower-thread case journaled in and in eccentric relation with the looptaker, means for restraining said threadcase against rotation, and actuating means adapted to impart to said loop-taker a plurality of rotations for each reciprocation of the needle, the eccentricity of said thread case being so disposed that in the rotation of the loop-taker the thread-case is moved in opposition to the stitch-setting action of the take-up.

10. In a sewing machine, the combination with a reciprocating needle, of a circularly moving loop-taker, a lower-thread case jourtinge and in eccentric relation, with the loop-taker from" which it is adapted to receive I lateral r bodily, movements, means 1 for restrainingsaidthread-case a ainst rotation, '5 actuating means adapted to lmpartto said loop-taker awplurality of rotations for each reciprocation of the needle, and needle thread takeup. with actuating means therefor for imparting thereto a stitch-setting 1'0 action iniopp'osition, to thebodily lateral movement" of the threa dcase and: beginning before the accomplishment of a complete excursion of the shuttle from loop-seizing positiont, v

11 lna'sewing machine, the combination with a' work-support, a needle sustained at. one side of said Work-support, means for imparting tovsaid needle reciprocatory movements through said ,work support, and a needle-thread take-up arranged at the oppositesid, of said work-support from the needle an provided with meansl or imparting to it an, operative stitch-setting movement for each reciprocation of the needle, of a circularly moving loop -taker I mountedjat theisame side of the ork-sup portjas the needle, a lower-thread case journjaled in and in eccentric relation with the loop -taker, means for restraining said, thread-case against rotation, and actuating means adapted to impart to said loop taker ahplurality of rotations for each reciprocation of the needle, the eccentricity of said thread -case being so disposed that in the ro-, tation of the loop-taker the thread-case is mo ed in opposition to the stitch-setting action ot the take-up.

,12. In a sewing; machine, the combination withia reciprocating open-eyed needle, of v clrcularly moving shuttle having on one side circularly moving shuttle havingon one side a, peripheral throat or recess and. provided with ai loop-seizing beakfo'rmed withqa shoulder adjacent said throat, alrace for sustaining and guiding, said shuttle, a shuttle driyenadaptedfto engage saidshoulder 4 5 of the shuttle-beak, shuttle-driver actuating means, and, a loop-controller mounted adjacent, said needle and formed withloopdetaining and loop cast-ofl portions said y loop-controller being arranged topresent its loop-detaining portlon to the needle-thread loop,betweentheneedle-eye and the shuttle throat for detaining the thread-loop within the, ,needle-eye and to present, its cast-off portionthereafter to said" thread-loop, to cle flectttlie same for disengagement from the needle-eye. J 1 I 13. In a sewing machine, the combination with a reciprocating.open-;eyedneedle, or a a peripheral throat, or recessandprovided withta loop-seizing beak formed with a shoulderjadjacent, said throat, a race for sustaining and'guiding said shuttle, ashuttie-driver adapted;to engageasaid shoulder of the shuttle-beak, shuttle-driver actuating 1neans,,and a loop-controller,mounted adjacentsaid needle and comprising ablade dis posed between the' needle and" the shuttle-= path; with its side-face presenteduto the needleand an adjacent edge arranged sub-,

"stantially parallel, with-the, path of the shuttle-beak at loop-seizing position. In testimony whereof, I have signed my name .to thisspecification, in the presence of two subscribing WltIlBSSGS-r i Q i I a, one E. BnowN. Witnesses: v a

H. J. Mum,

ca ie' ot'fliis 'patelic maybe obtained for fivecents leach, by addressing the Commissioner of Patents,

Washington, D. G.

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