US2378730A

US2378730A - Sewing machine attachment

Info

Publication number: US2378730A
Application number: US481971A
Authority: US
Inventors: Seaman Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1943-04-06
Filing date: 1943-04-06
Publication date: 1945-06-19
Anticipated expiration: 1962-06-19

Description

June 19, 1945. c. SEAMAN SEWING MACHINE ATTACHMENTS Filed April 6, 1945 3 Sheets-Sheet 1 IN VEN TOR. CHA RL. E5 SEAMAN ATTORNEK June 19, 1945. c. SEAMAN SEWING MACHINE ATTACHMENTS 3 Sheets-Shet 2 Filed April 6, 1943 IN VEN TOR. CHARL": .SEAMA v June 19, 1945. Q SEAMAN 2,378,730

SEWING MACHINE ATTACHMENTS Filed April 6, 1943 3 Sheets-Sheet 3 40 INVENTOR.

OmRL/ss SEAMAN ATTORNEX Patented June 19, 1945 UNI TED STA -Es PATENT FFlC E 2378,730 SEWING MACHINE ATTACHMENT Charles"Seaman, Jamaica Estates, NiYI Applfic'ationApril 6, 1943,: Serial" No.- 481,971 18 Claims (01. 112-214) This invention relates to 'sewingmachines and.

particularly to sewing machineattachments:

Prior to this invention, when two or'more plies,

formed of a single "fabric or superposed f-abrics;

were fed'through the stitching'position-of asewing machine'fo'r the'purposeof forming a hem 'or seam respectively, the upper ply was not fed at the same rate as the lower'p-ly' which was-in en'- gagement withthefeeddogs. Frequently,as a' consequence, the lower ply" Was gathered or puckered more-0r less 'h'apha'zar'dly. This 'haphazard gathering 'or puckering is-highly undesirable.

In the aforementioned'prionart practice, it was essential for the operator 'to manuallycontrol the feeding of the material to be hemmedand at all'times carefully and visually observe the folding arid stitchingoperation. If theoperation were not so observed, an irregular'row of stitches and also sometimes varying widths'o-f hem, in addition to'the gathering'previously men.-

tioned, would 'b'e obtained. As a consequence, a

blind individual-ocular not be a successful operator on such work;

An object of this invention is a sewing'm'achine an attachment of the typ'epreviouslymentioned which may be quickly rendered-inoperative in the event it is'desirecl'not'to entirely remove'the-attachment' ir'om the-sewing machine.-

Otherobjects will become apparent from the following complete description" of the invention.

In general, the objects of one phaseofthis' invention' are obtained byproviding-meansto engage and 'feed'the topply of a plurality of plies of "material in the travel thereof to the stitching position at sub-stantiallythe'same linear rate of speed as the lowermost ply is fedbythe feeddogs, Other ob'jects of the inventionare achieved by providing means to "disposethegoods in position for stitching-by merely h'andling'the goods without requiring actualobservance thereof. The means =for feedin-g the top ply comprises-a roll positioned in' advance of the' presser-foot: The:

roll is -'adjustably mounted On an arm '"adjustably or loweredwhenthe=presser foot is raised'or-lowered respectively. Because ofthe manner: in which the armr-carryingitheroll is, mounted on the presser--foot'-bar; th roll maybe raised or lowered as desired, independent of the presser:

foot" bar. Theutopi ply-engaging-roll. is driven by means driven from the pulley: end @of 'thesma chine, as willbe more fully described: hereinafter.-

In the preferred embodiment -.of the invention; there is also/provided a' roll at'the' rear: of thehead =and cooperating with. thework support [to engage=and feed the'materiali-after it hasleft thestitching position.- The rollat the rear-ofithe work support is, as will behereaftenmorelfully, explained, also driven fromthe pulley;endi of :the machine;

In advance. of the stitchingnposition, there. is providedv means ,to dispose the goods .in position. for stitching. Thisrneans is provided with a guide whereby, when the raw edgevoffth e goods isman-v ually disposed to abut said guide, the goods .will be properly positionedfor stitching; The guideis so constructedthat the vp-ositioningofv the raw edge of the goods can be expeditiously and cf.- fectively accomplished. solely by the hand without the necessity of .visually observing the same. Thus, the machine can be successfully operated even by a blind individual.

It will be apparent'from the description that the invention can be applied to the-stitching together by a single or multiple-needle machine of a plurality of plies formed of the same or' different materials, the plies being obtainedbyfolding or superimposition of the goods; For convenience and brevity, the invention will be specifically illustrated and described in connection with producing a'hem in which the raw'edge is concealed and preferably also secured between a top and bottom ply obtained'by folding the-goods.

In the drawings,

Figure 1 i a top plan view; partlybrokenaway for clarity, of "er-sewing machine withthe 'attachment positioned in place;

Figure 2 is an end 'view looking to theleft of Figure 1; I

Figure 3' is an end view looking'to the right of Figure 1f;

Figure 4 is a section taken on the-line 4-4 of Figure 1; y

Figur 5 is a perspectiveof the sup-port and driving-mechanism 'of the attachment; and

Figure 6 is a perspective digrammatic illustration including the guide and showing the fold-.

ing of the material and the stitching thereof.

Referring now to the drawings, wherein like reference numerals designate like parts, the reference numeral I6 designates a sewing machine head carried on a base l2. At one end, the head I is provided with a needle bar l4 which carries a needle I6. The needle bar I4 is reciprocated by means including a driving shaft [5 which is provided with a pulley H3 in driving relationship thereto. The pulley I8 is driven by a belt from any suitable driving means (not shown). The head In is also provided with a presser foot bar 24 which carries a presser foot 26, which cooperates with feed dogs 28 operated in the usual manner by a four-motion feed drive mechanism (not shown) and passing through slots 30 of a cover plate 32. The presser foot bar 24 can be elevated and lowered by means (not shown) through the manual actuation of the presser foot lever 36. It is to be noted that the needle bar l4 and presser foot bar 24 are on one end of the head [6 and that the pulley l8 and the drive 26 therefor are on the opposite end of the sewing machine head. It will further be observed that the details of the machine thus far described are those of a standard single-needle sewing machine.

In the embodiment shown (see Figure 6), a

fabric 38 is rolled to form a two-ply material, the two plies, for purposes of illustration. being designated by the

reference numerals

46 and 42. The raw edge of the ply 42 is then rolled inwardly and disposed intermediate the two

plies

40 and 42 to constitute a ply 44, in which condition the goods is fed through the path of travel of the needle l6 for stitching.

The fabric 38 is folded into position for stitching, as above described, by means of a folder 46 disposed in advance of the presser foot. The folder 46 is provided with an arm 48, which is carried on an arm pivotally mounted at 56 on a support 52 secured to the base 12 by means of screws 54. In Figure 1, the folder designated in full lines illustrates the folder in operative position; and the folder illustrated in dotted lines illustrate the folder in inoperative position. The folder is secured in position by means of the screws 55 cooperating with the slots 56 and holes (not shown) in the support 52. A pin 51 serves to engage the arm 48 and constitute a stop therefor. To move the folder 46 into inoperative position, the screws 55 are disengaged from the holes in the support 52 and the arm 46 is moved in the appropriate direction about the pivot 56.

The folder 46 is provided with an edge guide control 60 adjacent a curved depression 6|, for

reasons which Will become apparent hereafter.

In operation, the goods 38 is manually folded to form the

plies

46 and 42 and, in this condition,

fed into the mouth of the folder 46. The lower ply 40 is fed into the mouth, as at 62, and the top ply 42 is positioned on the top of the folder and manually adjusted so that the raw edge thereof i in abutting relationship to the edge guide 66.

The folder 46 is of a construction which will roll the raw edge of the original ply 42 and dispose it. as a ply 44, intermediate the top and bottom plies, as above described and as shown in Figure 6.

At the exit end of the folder, there is provided a tongue or guide 63, over which the folded material is fed in its travel from the folder 46 to and through the stitching position. As shown in the drawings, the guide 63 terminates in close proximity to the presser foot 26.

A roll 66 is disposed in cooperative relationship with the tongue 63 and is adapted to engage and feed the top ply 42 at a linear speed substantially equal to the feed of the lower ply 46 by the feed dogs 28. The roll 66 is rotatably mounted on the lower horizontal member 61 of an arm 68, the upper horizontal member 69 of the arm being rotatably secured in a block 16 adjustably and securely mounted on the presser foot bar 24. The roll 66 is provided with a pulley 12 whereby, upon rotation of said pulley 12, the roll 66 will be rotated. In the specific form shown, the arm 68 for the roll 66 is formed of a single member bent into a form having the lower member 61 and the upper member 69 connected by a vertical member.

The roll 66 is positioned in cooperative relationship with th guide 63 and particularly the forward end thereof is in close proximity to the presser foot. As shown in the drawings (Figure 1), one end of the roll 66 is substantially in alignment with the short member of the presser foot, and the toe of the long member of the presser foot is in a vertical plane which is substantially tangent to or slightly passes through the roll. The roll 66 will also be raised or lowered upon raising or lowering-of the presser foot bar 24. The roll 66 can be raised or lowered with respect to the guide 63 by adjusting the position ofthe block 10 on the presser foot bar 24. The roll 66 can also be adjusted transversely of the guide 63 by positioning the roll on the member 61. A shown in Figure 2, a member H, secured to the horizontalmember 69, is provided with projection 13 and 15 which cooperate with a pin 19. In operative position, th projection 13 is in engagement with the pin 19 and maintained in that position by the tension of an elastic belt 13. Upon rotary movement of the member 69 in the block 10, the roll 66 is moved toinoperative position independent of the presser foot bar 24. In inoperative position, the projection 15 is in engagement with the pin 19 and so maintained by the belt 18.

The roll 66 may be formed of any suitable material, and, in the event the material of which it is formed does not have sufiicient tractive force, the latter may be imparted thereto in'any convenient manner. A hard rubber roll and a cork roll are illustrative examples of rolls which will give satisfactory results.

In the embodiment shown in the drawings and now being described, there is provided a roll 14 formed of any suitable material and provided with a tractive surface, such as cork. This roll 14 i positioned to the rear of the stitching position and is so disposed that it will engage the stitched material after leaving the stitching position, preferably at the seam thereof, and in cooperation with the work support (base of machine, table, etc.) will feed the material across the work support. The peripheral speed of the roll 14 is substantially equal to the feeding speed of the feed dogs 28.

The roll 14 is secured to a shaft '16 rearwardly of the head and extending transversely of the work support, which shaft, as previousl mentioned, is driven from the pulley end of the machine. It is to be noted that a pulley TI is secured to the shaft 16 and which, by means of a belt 18 formed of an elastic material, such as rubber, drives the pulley 12, thereby imparting rotary motion to the roll 66.

Referring to Figures 1 and'5, a pulley is P065 408 constitiit a-zrediicing gearing and, by

proper seiection of 'the gearsyany desirewspeed of th'e sha'ft fli -'m'ay'- be-obtained.

"Ihtenne'diatethe*arm 9'4"and"the'pu1-1ey "ILthe shaft 'l6' is-provided with a *long sl'eeve llw which constitutes "a -protective covering for the shaft'; The bloom-92; (see Figure 5) is provided with a pair- 'of depending-ears' 'I' I =th'r0ugh which a'sh'aft' H2 extends. "The opposite-'ends"of-' the shaft I I2 arejournaled'im bosses-"l I4 carried by the spaced arms i I 6 extending from thebase H 8 Suitable means, such as set screws I20, secure'th'e-ends'oftheSh'aftI I 2"'in bosses H4; A-spring I21 is disposed between collars l '22 and 124; one end ofthe spring 'bein'g secured to the "collar I22 and 'the other end of thespring being secured to the blo'ck 92;- The"sprin'g"normal1y urges the block- "92'; whichais 'pivotall'y mounted 'on' the-' shaft I I '2; downwardly. 7

The base I- I8 is: secured to the work support behind (tothe rear) 'the'ih'ead by meansoi screws I30; as shlown in Figure' -l. the base I; It is previded with l'eveli'rig 'screws I32; whereby *the b ase I? I I 8 may be adjust'ed "i leveled) prioritdsecuring ii: in: 'place by the-screws I30 I The-leveling screws I32 are provided-with washers lam-loosely I swedged on: the lower ends" of the screws? and are'i intended to I be disposed inter-' mediate the work support and 'the bottomwi the base'i l ili. z I

. Fromrthedoregeirigg it is clearthat thebloc'k 9zgwhichrcarriesrthe means-foriiriving thesh'a-ft 16, is pivotal'ly 'mounted on'thebase H8 and that ibis-continuously unged 'by the 'sphing lfl tomove counterclockwise aboutthepivot'shatti I t2,- where= by :themorksroll i7 41willibe'fdisposed in cooperative relationshipa 'onrrthe lworkisuppottl When it-isdesire-d ito 'cremove thexcorkmolli from cooperative relationship withrirthe work; support, it (the cork roll :14) iselevatedabyrotating thelblock '92-' m'an'ually :clockwise 'onwthef pivot: shaft I [2; The blo'ck 92 may wbezretained in tsuchi iposition by a'engagement: thereof byzthe top. off the: cutVed' spring- 'MO which is 'securedrat its-ilowerendby screws I42 to the base H8: It isrpointe'd out :that the 'drive means forthe rol1v1'4 andthe manner of render: ing the rollv I'll-inoperative are itheisame -as that I described: inrmy applicationaiseri al No; 4812972 for Sewing-machineandrattachinent for prevent ing accumulation of the work onithe= work"sup-- port," 'filedton April" 6; 1943.52

It is-to-be' notedxthatlwhenzthercork roll 14 has been: disposed; in' inoperattve mosition'; the roll 6'5 may vremain inits operative fpositioni.-or-,-rby-rota- H0111 of the member-69 iinltheiblock. Iillfmay also be moved-.todnoperative position. When the-cork roll 14 is rmoved't oinoperative positionand the roll 66 remains "inwoperativeiposition', the latter will be-continued to bet-driven; as previousiy-"de scribedv The .change" 'in'sposition'. of Zth'e- "driving mechanism, due to the fact"that-the'beltst-IS and 82 are =zmade-;of elastic "material "suchzassmbber,

Adjacent eac'h end;

winnot materially:interfere with' thewdnivingiofthe roll 1 6 6 inxoperative position when thiscis desired.

' Frequentlyyin theizoperati'on'hf the machine; the 'presser foot 1 is elevated or "lowered: Inithe form described; due Etc themounting ofthefiroll 6 5 it '7 (the roll '6 6 7 will' :be :given a similarmove ment; For threading'ofithe goodsitiis desirable that fthe 10111143180 be-elevatedand'ren'dereduineffective when;"= iorexample; the :presserfoot bar Whis-elevated. With this 'in 'view; the shaft 16'Iis provided "with a cap l'5W WhiCh iis non-'rot'atably freely-disposed? on the "free i end off the "shaft lii and: rests on the'larmi'. I 5210f the li'ftrod 1 sum constitute anon-rotatable bearing forthashaft. The-upper rend fof: the: lift "rod fI 54""is adjustably (slid'ablyr "secured tbymeans of a "set screwil 56 in' a' block I58 adjfustably mounted-Yon and'secured torthetpresser'ioot bar 214." The %li'ftrod I-54" is ofsuch 'a design that when the presse'r foot bar 24 is elevated; thetarm iI 52*of-the lift ro'd"'I 54 will elevate theshaft 16, overcoming'the force 'of" the spring I 2 I which urges :"sa'id shaft downwardly;

' Upon therlowering oi'the-presser foot, thearm I edge'thereof "to provide (the plies lll'and'42; is fed to the folder -46, andthef'operater, by means of the fingers; positions'andmaintains the raw edge of -the 'ply 42 "in abutting' relationship with' the guide 66: As'longias'this conditionisnmaintained; them-achine-will operate automatically and produce-a "uniformly stitched seam 'free' of gathers; Since visual oloservati'onr: is notnecessary; rthe machine-mayi be operatedzby blihdfindividu'als. If Pier-some "re'asonwonother ith'e'roll 66 operates ataggreater speedthanrdesired;thenithe operator by his fingers may exert a :pressure on the "ply-42 andthereby overcome any undesirable results.-

For threadingwhe machineg-the presser foot bar 2' l -is-elevated'whereby"the 'rolls 66 and T4 will 'also be elevated 'and the goodsthreaded through the folder; Atterthre'ading', the 'presser foot islowered and-the machine'operated: When it is: desired to render the' roll 14' inoperativefthe black -92" is manually/"turned ion the 'pivot' shaft I4 2 locked inmositi-on b'y the spring 1'40? Since-it is: obvious thatwanious changes and modifications may 'be 'made in the above descrip-= tionw-w-i-thoutdeparting from the mature or "spirit thereof, this invention isnot' re'stricted thereto except as setforth in the appended claims;

I claim:

1.. A sewing machine having'a'worksupport, a head, a 'rec'iprocating needle "bar carrying'a needle; means to reciprocate sai'd'needle bar incl'ud ing'a-driving-shaft and "a pulleyinhrivirig relationship to said shaft; said-pulley and 'needle bar being on opposite ends 'of said 'head,' feeddogs.= a presser' foot barre-flying apresser foot co0peratingr-rWi-thsaid feed'dogs, means-to form a phi rality'ofsnperposed'plies"of "material in advance of the stitching position, a T011 in advance of the stitching position to engage and feed" the "top ply. to the 'presser"'foot,* means carried "by said presser foot bar t0"p0siti0n"sai'd roll in" advance of-"the' stitchingposition'; and means 'driven from the pulley end of said. machine to drive said ro'll contihuously'duringoperation'of the machine:

2;; 'A-sewing am'achine havinga work support, a ..-.head; e :au reciprocating: needle bar 1 carrying a needle, means to reciprocate said needle bar including a driving shaft and a pulley in driving relationship to said shaft, said pulley and needle bar being on opposite ends of said head, feed dogs, a presser foot bar carrying a presser foot cooperating with said feed dogs, means to form a plurality of superposed plies of material in advance of the stitching position, a roll in advance of the stitching position toengage and feed the top ply to the presser foot, means adjustably carried by said presser foot bar to position said roll in advance of the stitching position, and means driven from the pulley end of said machine to drive said roll continuously during operation of the machine.

3. A sewing machine having a work support, a head, a reciprocating needle bar carrying a needle, means to reciprocate said needle bar including a driving shaft and a pulley in driving relationship to said shaft, said pulley and needle bar being on opposite ends of said head, feed dogs, a presser foot bar carrying a presser foot co operating with said feed dogs, means to form a plurality of superposed plies of material in advance of the stitching position, a roll in advance of the stitching position to engage and feed the top ply to the presser foot, a block on said presser foot bar. a support having one end thereof mount ed in said block, said roll being rotatably mounted on the other end of said support, said support being of a design to position said roll in advance of the stitching position but in close proximity to said presser foot, and means driven from the pulley end of said machine to drive said roll con-- tinuously during operation of the machine.

4. A sewing machine having a work support,

a head, a reciprocating needle bar carrying a needle, means to reciprocate said needle bar including a driving shaft and a pulley in driving relationship to said shaft, said pulley and needle bar being on opposite ends of said head. feed dogs, a presser foot cooperating with said feed dogs, means to form a plurality of superposed plies of material in advance of the stitching position, a roll in advance of the stitching position to engage and feed the top ply to the presser foot, a roll rearwardly of the stitching position and cooperating with the work support to engage the stitched material and advance the sameover said work support, means driv'en from the pulley end of the machine to'drive the rearwardly positioned roll, and means connected to said driven means to drive the top ply-engaging roll.

5, A sewing machine having a work support, a head, a reciprocating needle bar carrying a needle, means to reciprocate said needle bar in cluding a driving shaft and a pulley in driving relationship to said shaft. said pulley and needle bar being on opposite ends of said head. feed dogs, a presser foot cooperating with said feed dogs. means to form a plurality of superposed plies of material in advance of the stitching position, a roll in advance of the stitching position to engage and feed the top ply to the presser foot. a shaft rearwardly of the head, a roll mounted on said shaft rearwardly of the stitching position and cooperating with the work support to engage the stitched material and advance the same over said work support. means driven from the pulley end of the machine to drive said shaft, and means driven by said shaft to drive the top ply-engaging roll.

6. A sewing machine having a work support, a head, a reciprocating needle bar carrying a needle, means to reciprocate said needle bar including a driving shaft and a pulley in driving relationship to said shaft, said pulley and needle bar ,being on opposite ends of said head, feed dogs, a presser foot bar carrying a presser foot cooperating with said feed dogs, means to form a plurality of superposed plies of material in advance of the stitching position, a roll in advance of the stitching position to engage and feed the top ply to the presser foot, a block on said presser foot bar, a support having one end thereof mounted in said block, said roll being rotatably mounted on the other end of said support, said support being of a design to position said roll in advance of the stitching position but in close proximity to the presser foot, means to mount said support on said block to permit disposition of said roll in operative or inoperative position, a shaft rearwardly of the head, a roll mounted on said shaft rearwardly of the stitching position and cooperating with the work support to engage the stitching material and advance the same over said work support, means driven from the pulley end of the machine to drive said shaft, and means driven by said shaft to drive the top plyengaging roll.

'7. A sewing machine having a work support, a head, a reciprocating needle bar carrying a needle, means to reciprocate said needle bar including a driving shaft and a pulley in driving relationship to said shaft, said pulley and needle bar being on opposite ends of said head, feed dogs, a presser foot bar carrying a presser foot cooperating with said feed dogs, means to form a plurality of superposed plies of material in advance of the stitching position, a roll in advance of the stitching position to engage and feed the top ply to the presser foot, a roll rearwardly of the stitching position and cooperating with the work support to engage the stitching material and advance the same over said work support, means carried by said presser foot bar to elevate said rearwardly positioned roll when the presser foot bar is elevated, means driven from the pulley end of the machine to drive the rearwardly positioned roll, and means connected to said driven means to drive the top ply-engaging roll.

8. A sewing machine having a work support, a head, a reciprocating needle bar carrying a needle, means to reciprocate said needle bar including a driving shaft and a pulley in driving relationship to said shaft, said pulley and needle bar being on opposite ends of said head, feed dogs, a presser foot bar carrying a presser foot cooperating with said feed dogs, means to form a plurality of superposed plies of material in advance of the stitching position, a roll in advance of the stitching position to engage and feed the top ply to the presser foot, a block on said presser foot bar, a support having one end thereof mounted in said block, said roll being rotatably mounted on the other end of said support, said support being of a design to position saidroll in advance of the stitching position but in close proximity to the presser foot, a shaft rearwardly of the head, a roll mounted on said shaft rearwardly of the stitching position and cooperating with the work support to engage the stitched material and advance the same over said work support, means carried by said presser foot bar to move said shaft and elevate said rearwardly positioned roll when the presser foot bar is elevated, means driven from the pulley end of the machine to drive said shaft, and means driven by said shaft to drive the top ply-engaging roll.

9. A sewing machine having a work support, a

head, a reciprocating needle :bar carryinga needle, means .to reciprocate said needle=bar including a .driving shaft and'a pulley in idriving relationship to said shaft, said pulley and needle bar being on opposite ends of said head, feed dogs, a presserfoot cooperating with said'feed dogs, a folder in advance of the stitchingxposition to fold-the free edge-of the upper ply of the material to be stitchedtinwardly and dispose it between the upper and lower plies, said: folder having a guide at the mouth thereof to engage the free edge and thereby properly position-the material and a tongue at the exit end thereof over which the folded material is fed, said tongue terminating in advance of the stitching position and in close proximity to said presserr foot, a roll in cooperative relationship with said'tongue to engage and feed the topply to the presser foot, and'meansdriven from the pulley end'of-said machine to drive said roll-continuously during operation of the machine. i

' 10. A sewing machine having a work support, ahead, a reciprocating needle'bar carrying a needle, means toreciprocate said needle bar including a driving shaft and a pulley in driving relationship to said shaft, said" pulley andneedle bar being on opposite ends of'said head, feed dogs,

a presser'foot bar carrying a presser foot coopmating with said feed dogs, a folder in advance of the stitching position to fold thefree edge of the upper ply of the material to be stitched inwardly and dispose it between the upper and lower plies, said folder having a guide at the mouth thereof to engage the free edge and thereby properly position the material and a'tong'ue at the exit end thereof over which the folded material is'fed, said tongue terminating in advance of the stitching position and in close proximity with'said presser foot, a roll in cooperative relationship with said tongue to engage and feed the top ply to the presser foot, means carried by said presser'foot bar to position said roll in cooperative relationship with said tongue, and means driven'from the pulley end of said machine to drive saidrfoll continuously during operation of the machine.

11. A sewing machine having a work support, a head, a reciprocating needle barcarrying a needle, means to reciprocate said needle bar. ineluding a driving shaft and a pulley in driving relationship to said shaft, said pulley and needle barv being on opposite ends of said head, feed dogs, a presser foot cooperating with said'feed dogs, a folder in advance of the stitching position to fold the free edge of the upper ply of the material to be stitched inwardly and dispose it between the upper and lower'plies, said folder having a guide at the mouth thereof 'to engage the free edge and thereby properly position the material and a tongue at the exit end thereof over which the folded material is fed, said tongue terminating in advance of the stitching position and in close proximity to said presser foot, a roll in cooperative relationship with said tongue to engage and feed the top ply to the presser foot, a roll rearwardly of the stitching position and cooperating with the work support to engage the stitched material and advance the same over said work support, means driven from the pulley end of the machine to drive the rearwardly positioned roll, and means connected to said driven means to drive the top ply-engaging roll.

12. A sewing machine having a work support, a head, a reciprocating needle bar carrying a needle, means to reciprocate said needle bar including a driving shaft and a pulley in drivingrelationshipto'asaidxshaft, said pulley andzneedle bar being i011 lopposite ends of said head, feed dogs, saupresse'r foottfbar carrying acpressernfoot cooperatinglwithasaid feed dogs, a folder in .ad-, vance of etherstit'ching position to. fold the, free edge.: .of..thecupper: ply of. the material to be stitched: inwardly and dispose it between the upper and lower plies, said folder havinga guide at the mouth thereof toengage the free edge and thereby :properly position-the material anda tonguevatttheexit endwthereof over which the folded: material isfed, said. tongue terminating, in advance of the-stitching position and .in close proximity :tosaid :presser foot, a roll in cooperative relationship with said-tongue. to engage and feedthe topltplyzto the-presser foot, a roll rearwardly sofzthe :stitchingcposition and cooperating v with ztheaworkt. supportto engage. the stitched material and advance the same over said'work support, meanszcarried bysaid presser foot bar to elevatesaid rearwardly positioned roll'when the. presser f00t=1bar is elevated, means driven fromntheipulley end of the machine to drive the rearwardly positioned roll, and means connected to saiddriven means. to drive the top'ply-engaging roll. I

13. A sewing-machine having a work support, a head, a reciprocatingneedle bar carrying a needle, means to reciprocate said needle-bar including a drivingshaftand a pulleyindriving relationship to said shaft, said'pulley'and needle bar being on opposite ends of saidhead,.;feed dogs, a'presser footbar. carrying: a presseri foot cooperating with said feed dogs, a' folder inadvance of the stitchingposition to fold the free edge of the upper ply of the material to be stitched inwardly andv dispose it .betweenwthe upper and lower plies, said folder havinga-guide. at the mouth thereof to engage the free :edgeand thereby properly position the material .and:-.a tongue at'the exit end thereof over which *the folded material is fed, said tongue terminating in advance of the stitching position andin-close proximity to said presser foot, a roll in'cooperative relationship with said tongue to engage and feed the top ply to the presser foot, a block on said presser'foot bar, a support having one end thereof mounted in said block, said roll being rotatably mounted on the other end ofsaid support, said support being of a design toposition saidroll in cooperative relationship with said tongue, a shaft rearwardly of the head, a roll on said shaft positioned rearwardly of the stitching position and-cooperating with the work support to engage thestitched material and advance the same over said Work support, means drivenfrom the pulley end of the machine to drive said shaft, and means driven by said shaft to drive the top ply-engaging roll.

14. An attachment for a sewing machine having a work support, a head, a reciprocating needle bar carrying a needle, means to reciprocate said needle bar including a driving shaft and a pulley in driving relationship to said shaft, said pulley and needle bar being on opposite ends of said head, feed dogs, a presser foot bar carrying a presser foot cooperating with said feed dogs, and means to form a plurality ofsuperposed plies of material in advance of the stitching position, said attachment comprising a block to be mounted on said presser foot bar, a support having one end mounted in said block, a roll rotatably mounted on the other end of said support, said support being of a design to position said roll to engage the top ply in advance of the stitching position but in close proximity to the presser foot, and means to be driven from the pulley end of the head to drive said roll continuously during operation of the machine.

15. An attachment for a sewing machine having a work support, a head, a reciprocating needle bar carrying a needle, means to reciprocate said needle bar including a driving shaft and a pulley in driving relationship'to said shaft, said pulley and needle bar being on opposite ends of said head, feed dogs, a presser foot bar carrying a presser foot cooperating with said feed dogs, and means to form a plurality of superposed plies of material in advance of the stitching position, said attachment comprising a block to be mounted on said presser foot bar, a support having one end mounted in said block, a roll rotatably mounted on the other end of said support, said support being of a design to position said roll to engage the top ply in advance of the stitching position but in close proximity to the presser foot, a shaft to be mounted rearwardly of the head, a roll on said shaft to be positioned rearwardly of the stitching position to engage the stitched material and advance the same over said work support, means to be driven from the pulley end of said machine to drive said shaft, and means driven by said shaft to drive said top plyengaging roll.

i 16. An attachment for a sewing machine having a work support, a head, a reciprocating needle bar carrying a needle, mean to reciprocate said needle bar including a driving shaft and a pulley in driving relationship to said shaft, said pulley and needl bar bein on opposite ends of said head, feed dogs, a presser foot bar carrying a presser foot cooperating with said feed dogs, and means to form a plurality of superposed plies of material in advance of the stitching position, said attachment comprising a block to be mounted on said presser foot bar, a support having one end thereof rotatably mounted in said block, a roll rotatably mounted on the other end of said support, said support being of a design to position said roll in operative position to engage the top ply in advance of the stitching position but in close proximity to the presser foot, mean to mount said support on said block to permit disposition of said roll in operative or inoperative position, a shaft to be mounted rearwardly of the head, a roll on said shaft to be positioned rearwardly of the stitching position to engage the stitched material and advance the same over said work support, means to be driven from the pulley end of said machine to drive said shaft, and means driven by said shaft to drive said top plyengaging roll.

17. An attachment for a sewin machine having a work support, a head, a reciprocating needle bar carrying a needle, means to reciprocate said needle bar including a driving shaft and a pulley in driving relationship to said shaft, said pulley and needle bar being on opposite ends of said head, feed dogs, a presser foot bar carrying a presser foot cooperating with said feed dogs, and means to form a plurality of superposed plies of material in advance of the stitching position, said attachment comprising a block to be mounted on said presser foot bar, a support, a roll rotatably mounted on one end of said support, said support being of a design to position said roll in operative position to engage the top ply in advance of the stitching position but in close proximity to the presser foot, means to mount said support on said block to permit disposition of said roll in operative or inoperative position, a shaft to be mounted rearwardly of the head, a roll on said shaft to be positioned rearwardly of the stitchin position to engage the stitched material and advance the sam over said work support, means to be mounted on said presser foot bar to engage said shaft and elevate the roll thereon when the presser foot bar is elevated, means to be driven from the pulley end of said machine to drive said shaft, and means driven by said shaft to drive said top ply-engaging roll.

18. An attachment for a sewing machine having a work support, a head, a reciprocating needle bar carrying a needle, means to reciprocate said needle bar including a driving shaft and a pulley in driving relationship to said shaft, said pulley and needle bar being on opposite ends 01 said head, feed dogs, a presser foot bar carrying a presser foot cooperating with said feed dogs, and means to form a plurality of superposed plies of material in advance of the stitching position, said attachment comprising a block to be mounted on said presser foot bar, a support having one end thereof rotatably mounted in said block, a roll rotatably mounted on the other end of said support, said support being of a design to position said roll in operative position to engage the top ply in advance of the stitching position but in close proximity to the presser foot, means to mount said support on said block to permit disposition of said roll in operative or inoperative position, a shaft to be mounted rearwardly of the head, a roll on said shaft to be positioned rear- 'wardly of the stitching position to engage the stitched material and advance the same over said work support, means to be mounted on said presser foot bar to engage said shaft and elevate the roll thereon when the presser foot bar is elevated, means to be driven from the pulley end of said machine to drive said shaft, and means driven by said shaft to drive said top ply-engaging roll.

CHARLES SEAMAN.

QERTIFICATE'OF CORBECTION'a Patent No., 2,578,750o June 19, 19L|J0 CHARLES/SEAMAN? It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5, seo ond column, line 52 for "operater read -}-0perator--; page 1;, second c0l=- umn, line 21,01aim 6 and line 59,, claim 7, for stitohing read -=-=st1tohed and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Pat'ent. Officem Signedand sealedthis 18th day of September, A0 Dn 19'45o Leslie Frazer (Seal) First Assistant Commissioner of Patents;