US1327647A - Combined looper and feeding mechanism for sewing machines - Google Patents

Description

J. P. WElS.

COMBINED LOOPER AND FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION HLED DEC.21,19H- RENEWED OCT. 28.1919.

1,327,647, Patented Jan. 13,1920.

3 SHEETSSHEET I.

- I 50 11 I ,6% 15 3 6 $0 51 INVENTOR:

i'Z 10 JohnPE/ew.

J. P. WEIS.

COMBINED LOOPER AND FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED DEC.21, 191l- RENEWED OCT. 28. I919.

1 27,647, Patented J an. 13, 1920.

3 SHEETS-SHEET 2- a0 Fig. 2.

IN V EN TOR.

I. P. WEIS.

COMBINED LOOPER AND FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED DEC-21, I9I'I- RENEWED OCT. 28.1919- I 1,327,647, Patented Jan. 13, 1920.

3 SHEETS-SHEET 3- :IIIUIIIIIIIIIII J IN VEN TOR.

BY Jb nPWw.

ATTOR ururnn srA'rEs PATENT curios.

JOHN P. W EIS, OFNYACK, -NEW YORK, ASSIGNOR TO METROPOLITAN SEWING MACHINE CORPORATION, OF NYACK, NEW YORK, A CORPORATION OF DELAWARE.

COMBINED LOOPER AND FEEDING MECHANISM FOR SEWING-MACHINES.

To all whom it may concem: y Be it known that I, J onN P. VVEIs, a citizen of the United States, residing at Nyack,

in the county of Rockland and State of New York; have invented certain new and useful Improvements in Combined Looper and Feeding Mechanism forSewing-Machines, of which the'following'is a speclfication.

This invention'relates to differential feeding mechanism for sewing machines and while it is especially adapted for use in sewing'machinessueh as shown in my copending'-ap'p1iatien*f0r sewing shoulder straps types" of [special sewing; machines and particularly in that class of machines having a post" for supporting the" work. I

The object of the invention is the provision of an improved 'feedingmechanism embodying a very efficient differential feed fi'ne'chanisrn in'fwhi'ch thheight' of both the dogs.

In thedrawings accompanying and formmg apart of thls speclfication,

FIOUIB 1 1s an end view of so much of a sewing machine as is deemed necessary to illustrate this improvement, the clothplate or post portion of the machine being in sec tion clearly to show the feeding mechanism; Fig. 2 is a top plan partly sectional view of the improvement; Fig. 3 is a front partly sectional view looking-in the direction of the arrow in Fig. 1; Fig. 4: is a perspective detail View of the holder for the feed dogs; Fig. 5 is a perspective view of the differential sliding dog; Fig. 6 is a detail side view of one of the main feed dogs; Fig. 7 is a perspective detail view of ore part of the differential feed dogslide block; Fig. 8 is a perspective detail view of the two differential feed dog slide blocks in position ready to be inserted in the holder; Fig. 9 is a view showing the actuating means for the differ cntial and main feed dogs. also a portion of. the looper actuating mechanism; and Fig.

Specification of Letters Patent.

Patented Jan. 13, 1920.

10 is a perspective detail View of the main shaft stitch regulating disk, looper operating and feed lift eccentric.

Similar characters of reference indicate corresponding parts in the several figures of the drawing.

7 In the preferred form thereof the bed plate 1 of the machine is provided with an upright post or cloth plate 2. The bed plate carries spaced bearings 2 for the bottom shaft 3, which rotates therein. An eccentric 4 (see Fig. 10) is secured to theend of the shaft adjacent one of the bearings 2 and has integral therewith a disk 5 provided with 'a j usting the crank pin 9 to and from the center to vary the stroke -of the connection or link 10 earried by the crank pin 9. The other end of'this connection or link 10 is connected-,as at" 11, to and'between a pair of arms 12' by a pin 13 (see Fig. 3). These arms 12 arehung from and supported by a. shaft 14 carried'by spaced bearings 15-15 formed as a part of the post 2 forming the housing for the mechanism. To the hub 17 of the arms 12 an upwardly extending arm 18 is secured, the upper end of which also has a hub 19 for apin 20. This pin connects arms 21 and 22 to this hub, and to the opposite ends of these arms 21 and 22 is connected, as at 23, the feed dog carrier or holder 25. This feed dog holder (see Fig. 1) is provided with opposed dove-tail grooves 26 to receive a pair of dove-tail slide blocks 2727.' These blocks are tapped at 28 to receive screws 29 for securing thereto the differential feed dog 30. (Fig. 5). The slide blocks 27 are also provided with de pending portions 32 which fit against the walls 33 of the opening 84 of the holder 25 st that when the blocks 27 slide in the clovetail groove, they will be guided by the dovetails as well as the depending portions thereof. The slide blocks 27 are made as two parts for convenience of manufacture so that the slot 35' can be milled therein without difficulty. This slot 35 provides a socket for the rounded end 36 of the actuating lever 37 which gives movement to the slide block and differential feed dogs 30 relatively to the holder 25. This lever 37 is pivotally supported at 38 to bearings 39 carried by the post. The curved extending arm Application filed December '21, 1917, Serial No. 208,216., Renewed October 28, 1919. Serial No. 334,096. 7

'T-sliaped 'slot'f'6f -for'the adjustable stitch regulating means generally indicated by 7,

which comprises the'collar screw 8 for adof this lever 37 is provided With'tapped holes to receive screws 41 and 41 which limit the movement of a slide block 42'Wl1 1Ch op crates on the curved arm. The slide block 4-2 may be shifted up and down the .arm by a rod 43 connectedthereto as at' iei and a spring 45 connected to a link -16, which is attached at one end to the block42 foropcrating thearni 10 and lever .37 to givemovemerit to the differential feed dog, the oppo- =shaft'38 so that the-rounded 'endf-36vwill give feeding movement to -the difl'feg'ential feed .dog 30. -Tl1e. feedfdog .carrien'fieffls provided-with a dependinglug 4z2mlrilled to receive a pin A38. for the ;attachment pf'ra yoked coupling 44 which ,is tapped-$0 1343- ceive the threaded connection efiif 1 provided with a locknut 17?. .The;.:otheraendi 83 of thisconnection-is tapped into ,a similar, oke

t9 and is also providedwith galockrnut so that vertical -adj ustment .to regulate ythe height of the feed dogs with respect to thc throat plate can be obtained. The-' yOkeAQ is drilled to receive a pin pivotallyconnecting this yoke to a lever 51 described hereinafter. The feed dog holder or carrier is'substantially U-shapedyas at 52;.(See

Fig. 1), thereby providin g free space for the operation of the loopers 53. The rear -portion of the feed dog holder is'providedwith a lengthwiseextending T-slot fi for. adjustably securing thereto several main feed dogs58 (see Fig. 6). Each feed dog car ries a nut 55 to fit the T-slot and is so shaped as to clamp the feed dog in its proper vertical and lateral position, so as to properly cooperate with the throat plate 56 and presser foot 57 to properly feed the Work. The feed dog 58 maybe adjusted vertically on its nut 55 by providing the dog with a slot 58 (shown in dotted lines), and the nut 55 may be adjusted laterally in the T- slot 5 1. In the present instance there-are three feed dogs 58 secured in the T-slot ('see Fig. 2). 'The eccentric 4 operates in the bearing 59 of the lever 51. which is yoked at 60 to straddle the lever 61 where it is ivotally connected to the lever 51 by a pin 62. A shaft 63 pivotallv supports the lever 61 and is carried by a bearing on the post casing. The other arm 64 of-the lever-,6 terminates in a hub 65 drilled to receive a pin 66 and a link'connection67, the other end of which link is pivotally connected as at 68 to the looper reciprocating yoke-69 (see Figs. 1 and 2). This yoke 69 is connected to two looper shafts 70 and 71 which oscillate therein. Means are provided to properly control the endm ovement of these looper shafts. inv .thebearings of the yoke. The shaft "70 operates inspaced bearings 72, while shaft 71 operates in spaced bearings 73. Carried by one looper shaft is a segflmentalgearal whichmeshes Witha similar gear 75, carried by the other looper shaft, so that each looper will havethe same oscil .lating movement. Motion is transmitted to the shaft .70 by a rod connection'76 (see Fig. 3) and a ball socket 77 carried by a crank T78, which is secured to the shaft 70,-

.also..two thread;;carrying fingers 80,. 0119.9

.coiiperatingwith each set of needlesto form .an' ornamentalg stitch on stop of the. work while the loopers; 53' form .an ornamental stitch on-the'bottom of the worl Reference may beihad to-myicontemporaneouslv. pend- :ing application, Serial No. 18 1.567,'filed August .6,'-=1Q1" Z, for, a more detailed description. of this 'improved looper mechanism,

needle :mechanism and stitch carrying fingers, which areoperative in the manner therein shown'and described.

The operation of these improved feeding: and looper mechanisms is as follows; i

The parts are sotimed as to'give endwise reciprocation to the link 10 to rock the arms 12 on their shaft 14:. This rocks the arm 18 and gives endvvise reciprocation to the feed dog holder or carrier 25 and at-the same time the-eccentric 4 operating in its bearing 59 operates lever 51 so as to give motion to the feed dog holder or carrier by means of the' adjustable yoke connection comprising parts 44 46 and iS) thereby to give a rise and-fall movement to the feed dogs and feed dog carrier so as to effect a four-n'zotion feeding action-toproperly feed the work. The movement'of the lever 51 also actuates the lever 61 onits shaft 63 to operate the arm and reciprocate the-link 67, and the yoke 69 thereofgiving endwis'e reciprocation to the loopershafts 70 and 71. Simultaneously with this'movement the rod 76 is also actuated so as to rock the looper shafts by means .of its connection 77 with the crank 78. The sliding feed dog 30 is'moved at the same time with the feed dogs 58 butthe stroke of the feed may be varied by manipulating the slide block t up and downthe curved arm &0. The link 46 has the same movement as the link 10 when the slide block is adjusted to the lowest position on'the-arm 40 so as to meet the bottom stop screw 41 (see Fig. 1). At this time the differential feed dog 30 will have the same movement as the feed dog 58, that is to say,they will feed in unison. On the other hand, when the slide block 42 returns to its initial or substantially its top position as shown in several views, the differential feed dog 30 will have a greater movement than the feed dog 58 to produce a gathering action on-tho work! It will of course'be understood that the various details may be more or lessvaried or departed from without changing the scope or spirit of the present improvement. From the foregoing it will be" observed that the looper mechanism "includes a pair of spaced independently 'supported' and opposed loopers 'loc'atedto operate in the spacebetween the' feed dog su'pporting'portiens of the feed dog carrier, and that, al' pai t' oftfi looper actuating means is animated withthe driving shaft through the, 'inediiin'i"Pof the same member or lever whiclf givesthefrisa and fall m'ovement'to'the feed dogcarrier.

It will also be observed that the actuating means for the dilferentialfeed' dog' is connected with the means which recip'rocates the feed dog carrier, so that the" difierential feed dog may move in unison with'the main feed dog when desired, and'that "dating the op eration of'the feed mechanism the-feeding movement of the differentialfe'ed dog may be varied at the will "of; the'jopratoi' by merely shifting the block 42 on thei'curved arm s0, and therefore the" resent improve ment provides a very e cient combined feeding and looper mechanism operated from the same driving shaft and largely from the same actuating means on that drivingshaft. f

The needle mechanism in the presentinstance, as shown in Fig. 3, comprises two sets of spaced needles 79, each set consisting of three needles while the finger mechanism comprises a pair of fingers 80, the needles being reciprocated by suitable means in the usual way, while the fingers are moved in a circular path substantially around the path of the needles by suitable mechanism, the details of which not'being claimedoherein, it is not'necessary to further describe, since this operating means is 4 described and claimed in my co-pending application here inbefore referred to.

The present improved machine, being particularly constructed for a special char actor of work, this somewhat governs the form of the feed mechanism used. This special form of work also requires the use of a post machine and as the working mechanism of the feeding and stitching elements must be confined in that post and as it is necessary to have access to these parts, it is therefore'necessary'to have both sides of the feed carrier open for the movement of the loopers, the handling of the thread'and the threading of the loopers. As the top of the feeds must act through the slots in the throat plate to feed the work, there is only one position in which the U-shaped portion -'of the feed carrier can be located, and that rier a two sided feed carrier were used with the bottom le t open but suitably braced or yoked atthe sides instead of at the bottom, "there would be' 'no way to thread the loopers or adjust them, "neither would there be a S of @I llectillglthe' feed liftg connection 46% r v. v

i In the present machine, the feeding arrangement-issuch asto permit the work to be drawnin from the rear and feed off the machine. This necessitates that the major portion of the feed actuating mechanism be'located at the front of the machine, which is' -a' somewhat unusual arrangement in this type ofjmachlne. Further, slnce it IS necessary to havethe'feed arranged as shown and to have a second feed operating on the goods in frontfof the needlesand the main feed operating on the goods in the rear thereof, it follows that the needles descend into the U-shaped carrier, and in order to form the stitches the loopers must cooperate with the needles in that position, so that in the present improvement the U-shaped form of carrier is necessary to accomplish the object sought, 7

I claim as my invention:

" 1. A combined feed and looper mechanism comprising a substantially v U-shaped feed dog carrier, means for imparting a rising and falling movement to the carrier, means for reciprocating the carrier, a looper having'its axis located above the bottom of the U-shaped space of the feed dog carrier and within the space thereof and means, for actuating said looper.

211A combined feed and looper mechanismcomprising a substantially U-shaped feed dog carrier, means for imparting a rising and falling movement to the carrier, means, for reciprocating the carrier, a plurality of independently supported loopers located within said-carrier, and means for actuating said loop'ers.

, feed dog carrier, means for imparting a four-motion movement to the carrier, a

looper located within said carrier, a shaft for supporting it and extending into said U-shaped portion of the carrier, means for reciprocating the shaft, and means for oscillating it.

5. A combined feed and looper mechanism comprising a substantially U-shaped feed dog carrier, means forimparting a four-motion movement thereto, a pair of independently supported loopers located within said carrier, a pair of shafts for supporting said loopers, means for imparting endwisemovement to the shafts, and means for oscillating said loopers. v a

6. A combined feed and looper mechanism comprising a substantially U-shaped feed dog carrier, means for imparting a four-motion movement thereto, a pair of independently supported loopers located within; said carrier, a pair of shafts for supporting said loopers, means for imparting endwise movement to the shafts, means for oscil- ,lating said loopers and comprising means connected with one of said shafts, and means connecting said shafts for simultaneous movement. I

7.' A combined feed and looper mechanism comprising a substantially U-shaped feed dog carrier, means for imparting a four-motion movement thereto, a pair of independently supported loopers located within said carrier, a pair of shafts for supporting said loopers, means for imparting endwise movement to the shafts, means for oscillating said loopers and comprising means connected with one of said shafts, and means connecting said shafts for simultaneous movement, said means comprising gear mechanism.

8. A combined feed and looper mechanism comprising a substantially U-shaped fee-d dog carrier, a driving shaft, means operated thereby for imparting a four-m0- tion movement tothe carrier, a pair of independently supported loopers located Within said carrier, :1 pair of shafts extending transversely to the driving shaft for sup porting said loopers, and means operated from the driving shaft for imparting end- Wise movement to the shafts and oscillatory movement to the loopers.

9. A combined feed and looper mechanism comprising a substantially U-shaped ing the movement, of said sliding feed dog feed dog carrier, a driving shaft, means operated therebyfor imparting a four-motion movement to the carrier, a pair of independently supported loopers located within said carrier, a pair of shafts extending transversely to the driving shaft for supporting said loopers, means operated from the driving vshaft for imparting endwise movement to the shafts and oscillatory movement to the loopers and including means connected with one ofsaid shafts, and means connecting said shafts for simultaneous movement.

10. A combined feed and looper mechanism comprising a substantially U-shaped feed, dog carrier, means forimparting a four-motion movement" thereto, a sliding feed dog carried by said carrier and movable in unison With said carrier, means for varythereby to give a, differential movement to the feed, and looper vmechanism. comprising a ,pair of shafts extending into the U-shaped portion of said carrier, loopers carried (on theends thereof,.,and actuating means for said loopers.;

11. A combined feed and looper mechanism comprising-a substantially U-shaped feed dog carrier, means for imparting a. four-motion movement thereto," a sliding feed dog :carried, by said carrier and movable in amison with said carrier, means for varying the movement of said sliding feed dog to give a differential movement to the feed, looper mechanism including actuating means and loopers,'each having its axis located above the bottom of the U-shaped space of the-feed dog carrier and within the space thereof, and vertically and laterally adjustable main feed dogs also carried by said carrier..

12. A combined feed-and looper mecha nism comprising a substantially U-shaped feed dog carrier, means for imparting a four-motion movement thereto, a sliding feed dog carried by said carrier and movable in unison with said carrier, means for varying the movement of said sliding feed dog thereby to give a differential movement to the feed, looper mechanism comprising a pair of shafts extending into the U-shaped portion of the carrier, oppositely movable loopers of that part of the looper mechanism located within said carrier.

13. A combined feed and looper mechanism comprising a feed dog carrier having spaced supporting portions, feed dogs carried by said spaced supporting portions,

'means for imparting movement to said carrier, looper mechanism comprising a pair of looper shafts extending into the space of said carrier, a pair of loopers carried on the ends of said shafts within said space, and means for oscillating and reciprocating said looper".

14:. A combined feed and looper mechanism comprising a feed dog carrier having spaced sup-porting portions, feed dogs carried by said spaced supporting portions, means for imparting movement to said carrier, looper mechanism comprising a pair of looper shafts extending into the space of said carrier, a pair of oppositely movable loopers carried on the ends of said shafts within said space, and means for oscillating and reciprocating said loopers. g

15. In a sewing machine having a driving shaft, the combination of a feed dog carrier, a lever system pivotally connected to said carrier at one point and connecting it with the driving shaft for im arting arising and falling movement to t e carrier, a lever system .connectedto said carrier," at another point and connecting-it with the ;driving shaft for imparting abackward and .forward movement 'to said carrier, a differential feed dog carried by said carrier alever system connecting itwith-tone of saidlever systems for imparting a differential movement .thereto and includ ng a curved arm and a sliding block, and means for adjustingv said block at the will of theoperator;

16, A combined feed andlooper mechanism comprising a feed carrier. having spaced supporting portions,,feed dogs carried by said spaced supporting portions, means for imparting a four-motion movement to said carrier, looper mechanism partly located within the space of said carrier, adjustable means for imparting a differential movement to one of said feed dogs and adjustable during the operation of the feed mechanism, and means for adjusting the carrier and its feed dogs.

17 A combined feed and looper mechanism comprising a feed carrier having spaced supporting portions, feed dogs carried by said spaced supporting portions, means for imparting a four-motion movement to said carrier, looper mechanism partly located within the space of said carrier, adjustable means for imparting a differential movement to one of said feed dogs and adjustable during the operation of theing shaft.

rier, adjustable means for imparting a differential movement to one of said feed dogs and adjustable during the operation of the feed mechanism, means for adjusting the carrier and its feed dogs, means for adjusting the other feed dog laterally and vertically relatively to its carrier, said looper mechanism comprising a pair of independently supported loopers, a shaft carrying each of said loopers, means for imparting endwise movement to the shafts, means for rocking one of said shafts, and means connecting said shafts for simultaneous move ment.

19. In a sewing machine, the combination of a driving'shaft, feed mechanism including a feed dog carrier, an actuating lever connected with the driving shaft, means pivotally connecting said carrier with andmovement to the carrier, a link also connected-with the driving shaft, rocking arms connected with said link, and means connecting said rocking arms with said carrier for reciprocating the carrier, the means for imparting risingand falling movement to and for reciprocating said carrier, all'being located to one and the same side of said driv- 20. Ina sewing machine, the combination of ajdriving shaft, feed mechanism including a feed dog carrier, an actuating lever connected with the driving shaft, adjustable means pivotally connecting said carrier with and supporting it above said lever and driving shaft for imparting a rising and falling movement to the carrler, a link also connected with the driving shaft, rocking arms connected with said link, and means connecting said rocking arms with said carrier for reciprocating the carrier.

21. In a sewing machine, the combination of a driving shaft, feed mechanism comprising a substantially U-shaped feed dog carrier, an actuating lever connected with the driving shaft, means pivotally connecting said carrier with and supporting it above said lever for' imparting a rising and falling movement to the carrier, a link also connected with the driving shaft, rocking arms connected with said link, means connecting said rocking arms with said carrier for reciprocating the carrier, a main feed dog carried by said carrier, a differential feed dog also carried by said carrier, and means operative during the operation of the feed mechanism; for varying the movement of said last feed dog.

22. In a sewing machine, the combination of a driving shaft, feed mechanism comprising a substantially U-shaped feed dog carrier, an actuating lever connected with the driving shaft, means pivotally connecting said carrier with and supporting it above said lever for imparting a rising and falli'ng' movement to the carrier, a link also consaid rocking arms with said carrier for reciprocating the carrier, a main feed dog carried by said carrier, a differential feed dog also carried by said carrier, means operative during the operation of the feed mechanism for varying the movement of said last feed dog and comprising an arm connected with said difl'erential feed dog and having a curved portion, a block shiftable thereon and connected with said rocking arms, and means under the control of the operator for shifting said block.

23. In a sewing machine, the combination of a driving shaft, feed mechanism comprising a. substantially U-shaped feed dog carr ier,'an actuating lever connected with the driving shaft, means pivotally connecting saidcarrier with and supporting it above said lever for imparting .a rising, and falling movement toithe'carrler, a link also connected with the driving shaft, rocking arms connected with said last link, means connecting'said 'rocking arms with said carrier for reciprocating the carrier, a main feed dog c'arriedby said carrier, a differential feed.

dog also carried by said carrier, means op erative during the operation of the feed mechanism for varying the movement of said last feed dog and comprising 'an arm connected with said differential feed dog and having a curved portion, a block shiftable thereon and connected with said rocking arms, means under the control of the operator for shifting said block, looper mechanism comprising a pair of independently supported loopers located within said U-shaped carrier, a pair of endwise movableshafts carrying said loopers, means for oscillating said shafts simultaneously, and means for shifting said shafts endwise and connected with the lever to which the carrier is pivotally connected for rising and falling movement.

24:. In a sewing machine having a driving shaft, the combination of a feed dog carrier, a lever system pivotally connecting it at its underside with the driving shaft for impart ing a rising and falling movement thereto, a lever system pivotally connecting the carrier at its forward side with said driving shaft for reciprocating it backward and for ward, a differential feed dog carried by said carrier, a lever system connecting said dog with one of said lever systems for imparting a differential movement thereto and including a curved arm and a sliding block thereon, and means adjustable at the will of the operator for shifting said block.

25. In a sewing machine having a driving shaft, the combination of a feed dog carrier,

a lever system pivotally connected 'to said carrier at one point and connectingit with the driving shaft for imparting rising and falling movement to said carrier, a lever system connected to said'carrier at another point and connecting it with the driving shaft for reciprocating the carrier backward and forward, a differential feed dog carried by said carrier, a lever system connecting said dog with said last lever system for imparting a differential movement to the feed dog and including a curved arm and a sliding block, and means connected with said block for adjusting said block at the" will of the operator during the operation of the machine.

26. A. feed mechanism for a sewing machine comprising a feed carrier having spaced supporting portions, feed dogs carried by said spaced supporting portions, a lever system for imparting Ia four-motion movement to said carrier, adjustable meansv under the'controhof, the operator-forim' parting a differential movement to one of said feed dogsand adjustable duringthefop eration of the feed mechanism, and includ ing a "curved arm and a 'slidin block there-l on also connected with said lever system, and means for adjus ting'the carrier and its feeddogs."

27. A feed mechanism for a sewing ma chine comprising a feed carrier having spaced supporting portions, feed dogs car'-' ried by said spaced supporting portions, means for imparting a four-motion movement to said carrier, adjustable means under the control 'of1the' operator for imparting a differential movement to one of said feed dogs and adj ustable during the operation of the feed mechanism, and means for adjusting the carrier and its feed dogs, said carrier being pivotally supported by its ad justin means.

28. in a sewing machine havin a driving shaft, the combination of afeed 0g carrier, a lever system pivotally connecting it at its underside with said driving shaft for imparting a rising and falling movement to said carrier, a lever system pivotally connecting it at its forward side with said driving shaft for reciprocating the carrier backward and forward, a differential feed dog carried by said carrier, a lever system pivotally connecting said feed dog with said last lever system and including a curved arm and a sliding block, the lever system for reciprocating the feed dogs forward and backward and the lever system for shifting the differential feed dog having a common pivotal connection at one point, and means connected with said block for shifting it at the will of the operator.

29. In asewing machinehaving a driving shaft, the combination of a feed dog carrier, means connecting said carrier with the driving shaft for imparting rising and falling movement to the carrier, means connectingsaid carrier with the driving shaft for imparting forward and backward movement to the carrier, a differential feed dog carried by the carrier, means connecting said differential feed dog with one of the carrier actuating means and having a common pivotal connection therewith at one point and including a lever pivotally supported between its ends to a fixed part of the machine and terminating below said pivotal support in a curved arm and a sliding block mounted thereon, and means for shifting said block at the will of the operator. T

30. In a'sewing machine having a driving shaft, the combination of a feed dog carrier, a lever system pivotally connecting it at one point with the driving shaft for imparting a rising and falling movement to the carrier, a lever system connecting it at another point with the driving shaft for impartinga backward and forward movement to said carrier, a differential feed-dog carried vby; said carrier,qa lever systemconnecting it with one; of "said lever .systemsQfor impart-1 ing a differential movement thert0 and in? cludinga curved arm and aslidingbloc'k, meansvforadjusting said block at the will of the operator, said feed dog carrier com prising a pair of spaced feed dog supporting portions, a looper or loopers located within said space, a shaft foreach of-said loopers extending into said space, means connecting each ofv said shafts with the driving shaft for reciprocating each shaft, and means for oscillating the loopers. Y

31. In a sewing machine having a driving shaft, the combination of a feed dog carrier, a lever system pivotally ,connectin it at one point with the driving shaft for imparting rising and falling movement to said carrier, a lever system connecting said carrier at another point with the driving shaft for reciprocating the carrier backward and forward, a differential feed dog carried by said carrier, a lever system connecting said dog with said last lever system for imparting a differential movement to the feed dog and including a curved arm and a sliding block, means connected with said block for adj ustingsaid block at the will of the operator, said feed dog carrier comprising a pair of spaced feed dogsupporting portions, a looper or loopers located within said space, a shaft for each of said loopers extending into said space, means connecting each of said shafts with the driving shaft for reciprocating each shaft, and means for oscillating the loopers.

32. In a sewing machine havin a driving shaft, the comblnation of a fee dog carrier, means connecting said carrier with the driving shaft for imparting rising and falling movement to the carrier, means connecting said carrier with the driving shaft for imparting forward and backward movement to the carrier, a differential feed dog carried by the carrier, means connecting said differential feed dog with one of the carrier actuating means and having a common pivotal connection therewith at one point and including a curved arm and a sliding block mounted thereon, means for shifting said block at the will of the operator, said feed dog carrier comprising a pair of spaced feed dog supporting portions, a looper or loopers located within said space. a shaft for each of. said loopers extending into said space, meansconnecting each of said shafts with the driving shaft for reciprocating each shaft, and means for oscillating the loopers.

33. In a sewing machine, the combination of a driving shaft, actuating means connected therewith, feed mechanism comprising a feed dog carrier pivotally connected with and directly above said actuating means for rising and falling movement, rocking means connected withthe actuating means for reciprocating said carrier, a differential feed dog carried by said carrier, rocking means also connected with said differential feed dog and having a curved arm, a member movable along said curved arm and also connected with said first rocking means and actuating means whereby the differential feed dog may have a movement in unison with the feed dog carrier, and means connected with said movable member and under the control of the operator for varying the movement of said feed dog during the op eration of the feed mechanism. r

34. In a sewing machine, the combination of a driving shaft, actuating means connected therewith, feed mechanism comprising a feed dog carrier pivotally connected with and directly above said actuating means for rising and falling movement, rock ingmeans connected with the actuating means for reciprocating said carrier, a differential feed dog carried by said carrier, 1

rocking means also connected with said differential feed dog and having a curved arm, a member movable along said curved arm and also connected with said first rocking means at a pivotal point of connection whereby the differential feed dog may have a movement in unison with the feed dog carrier, and means connected with said movable member and under the control of the operator for varying the movement of said feed dog during the operation of the feed mechanism.

35. In a sewing machine, the combination of a driving shaft, actuating means connected therewith, feed mechanism comprising a feed dog carrier pivotally connected with .and directly above said actuating means for rising and falling movement, rocking means connected with the actuating means for reciprocating said carrier, a

differential feed dog carried by said carrier, rocking means also connected with said dif ferential feed dog and having a curved arm, a member movable along said curved arm and also connected with said first rocking means and actuating means whereby the differential feed dog may have a movement in unison with the feed dog carrier, means connected wit 1 said movable member and under the control of the operator for varying the movement of said feed dog during the operation of the feed mechanism, a main feed dog also carried by said carrier, and looper mechanism partly supported between said differential feed dog and main feed dog,

36. In a sewing machine, the combination of a driving shaft, actuating means connectedtherewith, feed mechanism comprising a feed dog carrier pivotally connected with and above said actuating means for rising and falling movement, rockingfmeans connected with the actuating means for reciprocating 'sai'd'carrier, a differential feed dog'carriedby' said carrieiglrocking means also connected with -said -diffe'rential feed dog and having a curved arm, a member movable along said curved 'arm and also connected'with said first rockingm'eans' and actuating means whereby the differential ers. parallelly located shafts for supporting said loopers, means for rocking one of said shafts, means-for connecting said shafts whereby'both will have a simultaneous rocking movement, and means also connected with a part of said actuating means for shifting said shafts lengthwise.

87. In a sewing machine, the combination of a driving shaft, actuating means connected therewith, a feed dog carrier pivotally supported above and connected with said actuating means for rising and falling movement and adjustable relatively to said actuating means, a lever system connecting: said actuating means with the feed dog carrier for reciprocating it. a main feed dog carried by the carrier, a differential feed dog carried by the carrier, a lever system also connected with the actuating means for shifting said differential feed dog, and means under the control of the operator for varying the movement of said differential feed do 38. In a sewing machine, the combination of driving means, actuating means connected therewith, gang feeding means including-a differential feed dog'operatively connected withsaid actuating means'to impart to said gang feeding means a four motion movement and a differential movement of'the feed dog, means under the eontrol of the operator and operative during the movement of the feed mechanism for varying the movement of said differential feed dog, looper mechanism also "connected with saidactuating means and partly carried between said main and differential feed dogs and comprising'a' pair of independently supported loopers," and j lengthwise movable and oscillatory shaftsfor supportingsaid loopers.- I

39. A feed mechanism for asewing-machine comprising a'feed' dog' carrier oonsisting of apair'of spaced'supporting portions, one having dove-'tailedways in its upper side, a sliding block supported by said" dove-tailed" ways, and a ried by said-sliding block.

i -10. A feedzmechanism' for a' sewingjma chine comprising a" 1 feeddog' carrier n con sisting" of a pair of' spacedsupporting per-' ti'ons, one-having dove-tailed" ways- 111 i its upper side," a sliding block supported by said dove-tailed ways and a feed dog car= ma byqsaid s1iding: b1 ock',=:the other supporting portio ro'f' said carrier: having a" recess at "its rear: side for the reception go'f a main feed dog; My

41: A feedmechanisrh for et sewii'ng ma-= chine: compris ng affeed "dogf: carrier iconsisting'of a" pair of spaced supporting portions, one having dove tailed-ways in its top, a sliding block supported by said dove tailed ways, and a feed dog carried by said sliding block, the-other supporting :portion of said carrier having a' slot 'atits rear'tfor the reception of one or' more-main feed dogs.- m

42. A' feed mechanismvfor a'sewing machine comprising a feed dog carrier consisting of a pair of spaced supporting portions, one having'a recess in its top face for the reception of a sliding feed dog, andithe other having a recess at its rear'side for the reception of one or more feed dogs.

43. A feed mechanism for a sewing ma chine comprising afeed dog carrier consisting of a pair of spaced supporting portions, one having dove-tailed ways, a. pair of members having registering recesses in their meeting faces and forming a sliding block located in said ways, a differential feed dog carried by said sliding block, one or more main feed dogs carried by the other of said supporting portions, and operating means for said sliding block and having a part thereof projecting'into said registering recesses.

44. A feed-mechanism for a sewing machine comprising a feed dog carrier consisting of a pair of spaced supporting "portions, one havingdove-tailed ways 'in its top, a

feed- 'dog can.

pair of recessed members forming a sliding block located in said ways, a differential feed dog carried by said sliding block, the other of said spaced supporting portions having a T-shaped slot at its rear, and one or more main feed dogs, each having a part projecting into saidslot. v

l5. In a sewing machine, the combination of a driving shaft, actuating means connected therewith, a feed dog carrier comprising a pair .of spaced supporting por tions, one having a dove-tailed way,-'the other a T-shaped slot, an adjustable member pivotally connected with said actuating means and with the underside of said carrier for pivotally supporting it for rising and falling movement, rocking means pivot ally connected with said carrier and with the actuating means for reciprocating said carrier, one or, more main feed dogsj carried bysaid T-shaped slot,- a differential feed dog slidingly supported'by said d0.ve-'

' tailed way, rocking means connected with saiddiiferential feed dog and having :a curved arm, a block movable on said curved arm and also connected with saidjfirst rockingmeans atits point ofconnecti'on'wi th the actuating means whereby'thel differential feed dog :may have a movement in uni son with the'main feed dog, a spring for moving" said block in one direction, and means under the control ofthe operator for 11 moving the block in the opposite direction during the operation of the feed.

46. In a sewing machine, the combination of a driving shaft, actuating means-connected therewith, a feed 'dog carrier .c'om prising a pair of spaced supporting *por tions, one having:a' dove-tailed way,- the other a T-shaped slot, an adjustable member pivotally connected with said actuating means and with the underside of said-carrier for pivotally supporting it forzrising and falling movement, rocking means pivotally connected with said carrier and with the actuating means for reciprocating said carrier, one or more main feed-dogs carried by said T-shaped slot, a-difi'erential feed dog slidinglysupported by said dovetailed way, rocking means connected with said difierential feed dog and having a curved arm, a block movable on said curved arm and also connected with said first rocking means at its point of connection with the actuating means whereby the differential feed dog may have a movement in unison with the main feed dog, a spring for moving said block in one direction, means under the control of the operator for moving the block in the opposite direction during the operation of the feed, and looper mechanism also connected with that part of the actuating means which pivotally supports and imparts rising and falling movement to the carrier.

47. i In a sewing machine, the combination of a driving shaft, actuating means connect: edtherewith, a feed dog.carrier'comprising a pair ,of spaced supporting portions, one having a doveta iled*wa'y,; the other. a .T- shaped 1 slot, an adjustable member pivotally connected with. -;sa id actuating means-- and with the underside of. said carrier for pivotally, supportinghit for rising and falling movement,-'rocking means pivotally connect ed with said carrier and. with the actuating means fortreciprocatingv-said carrier, one or more main feed dogs carried by said- T- shapedslot, a diiferentialifeed dog slidingly supported by said dove-tailed way, rocking means connected with saiddifferential feed dog and having a curved arm, a block movable on; said cunvedanmztndalso connected with said zfirstnrockinglmeans at-its point of E connection :wwith the actuating nmeans whereby the differential feed dog, may have a imovementivin :um'son with-the main feed dog, a spring: for .moving said block. in one direction, mea'ns underitheb control of t the operator- 'forimoving gthe :block .in the 'OPPO'. site" directionzdurin-g theaoperation of; the feed, 2 and gldoperemechanism also; connected with-that part-'ofathe actuating means which pivotally! supports and imparts rising and fallingzmovement to the carrier, apart-of said looper mechanism being located between the spacedrportionsof the, carrier.

.548. 4 In a. sewing ,-machine, the v combination of a driving shaft, actuating means-car; ried 'lthereby, a feed dog. acarrier pivotally connected with said actuating :nieans F for rising-and falling movement, means connecting said carrier with said actuating means for imparting .aireciprocatary movement; to the-carrier, looperume'chanism, and means supported independently of said actuating means and connecting "saidlooper mechanism with that part; of the actuating means which imparts rising and-falling movement to the-carrier. Y

49,- In a'sewing machine, the combination of a drivingshaft,.actuating n1eans carried thereby, a feed? dog'icarrier:pivotally connected-withsaid actuating; means for rising and fallinginovementymeans .connecting said carrier :with "said actuating meansfor imparting: .a reciprocatory1= ;movement to the carrier, looper mechanism, means supported independently of said actuating means and connecting said looper mechanism with that part of the actuating means which imparts rising and falling movement to the carrier, said feed dog carrier comprisin a pair of spaced supporting portions, fee dogs carried thereby, and said looper mechanism having a part thereof located in said spaced supporting portions.

50. In a sewing machine, the combination of a driving shaft, actuating means carried thereby, a feed dog carrier pivotally consaid looper mechanism with that part of the actuating means which imparts rising and falling movement to the carrier, said feed dog carrier comprising a pair of spaced sup-4 porting portions,.feed dogs carried thereby, said looper mechanism having a part thereof locatedin said spacedsupporting portions, means connecting one of said feed dogs with said actuating means, and means for varying the movementof said last feed dog.

51. ln a sewing machine, the combination of a driving shaft, actuating means carried thereby, a feed dog -carrier pivotally connected with said actuating means for rising and falling movement, means connecting said carrier-with said actuating means for imparting a reciprocatory movement to the carrienlooper mechanism, means'connecting said looper mechanism with that :part of the actuating means which: imparts rising and falling movementtd the carrier, i: said feed dog carrier comprisinga :pair of spaced sup; porting portions, feed dogs carrie'd' thereby, said looper mechanism having ,a partthereof located in said spaced supporting portions, means connecting one of said feeddogs with said actuating means, means for varying the movement 'of said last feed dog and comprising a spring and. means under the control of the operator during the operation of the feed -=mechanism.

" 52. Ina sewing machine, the combination of'two sets of spaced n'eedles,fa thread carrying finger cooperating with each set of needles, a gang feed including a differential feed dog, means for operating said gang feed, means for varying the movement of said diflerential feed dog and under the control'of the operator durin the operation of the feed mechanism, and ooper mechanism comprising a pair of independently supported' loopers and means for actuating said loopers, the organization being such that during the feeding movement of the work two rowsof ornamental stitches are formed on the top and bottom of the work.

[153. In a sewing machine, the combination comprising a pair of independently supported loopers and means for actuating said loopers, the organization being such that during the feeding movement of the work two rows of ornamental stitches are formed on the top and bottom of the work, said gang feed having feed dogs supported spaced apart and said loopers being located in the space between said feed dogs.

54. Feeding mechanism for a sewing machinev comprising a main feed dog, a dilferential-feed dog, means for actuating said feed dogs and including means forsliding the latter relatively to the former, meansimder the "control :of the operator and operative during the operation ofthefeed-mechanism for varying-the movement of saiddifferential feedlldog, looper mechanism comprising a plurality ofindependently supported loop ers, and an upright post in which said feed mechanism, loopers and the major part of the actuating means are located. 55. Feeding mechanism for a sewing machine comprisinga'main feed dog, a differential feed dog, means for actuating' said feed dogs and including means for sliding the latter relatively to the former, means under the control ofthe operator and operative during the operation of the feed mechanism for varying the movement of said :difierential feed dog, looper mechanism comprising a plurality of independently supported loopers, van upright postin whichsaid feed mechanism, loopers and the major part of the actuating means are located, two sets of spaced needles, and thread carrying fingers cooperating therewith, the organization being such that during the feeding of the work two ornamental spaced rows of stitchesare formed on the top and bottom of the work. Signed at Nyack, Rockland county, New York, this 14th day of December, 1917.

JOHN P. WEIS.

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