US2783724A - Sewing machines - Google Patents

Description

A. c. PETERSON Erm. 2,783,724

SEWING MACHINES 8 Sheets-Sheet 1 mm f v A umm. o

1.11. l ,l l I ll llll IIL March 5, 1957l Filed June 25, 1954 March 5, 1957 A. c. PETERSON ETAL 2,783,724

SEWING MACHINES 8 Sheets-SheetI 2 Filed June 25, 1954 v amm wm Nm l, N l wwxf mv blu, 11i m51v umm m. mm

March 5, 1957 A, c, PETERSON ErAL 2,783,724

SEWING MACHINES Filed June 25, 1954 8 Shets-Sheet 3 FIG.3

March 5,. 1957 A. c. PETERSON ErAL 2,783,724

SEWING MACHINES Filed June 25, 1954 8 Sheets-Sheet 4 FIGA March 5, 1957 A. c. PETERSON ErAL 2,783,724

SEWING MACHINES Filed June 25, 1954 8 Sheets-Sheet 5 March 5, 1957 A. C. PETERSON HAL SEWING MACHINES 8 Sheets-Sheet 6 Filed June 25, 19,54 Y

March 5, 1957 A. c. PTERsoN ETAL 2,783,724

SEWING MACHINES Filed June 25, 1954 a sheets-sheet '7 March 5, 1957 A. C. PETERSON ETAL 2,783,724

SEWING MACHINES Filed June 25, 1954 8 Sheets-Sheet 8 United States PatCIfQ SEWING MACHINES Albert C. Peterson, Park Ridge, and Raymond Tlsmiith, McHenry, lll., assignors to Union Special Machine Company, Chicago, Ill., a corporation .of Iliinois Application June 25, 1954, Serial No. 439,188

Claims. (Cl. 112-18) This invention relates to a sewing machine of the Vcupfeed type which is of particular utility in the seaming of sweaters and similar articles formed of knit material. The machine is especially useful in the formation of seams by chain stitches of the single thread 101 type or the `two thread 401 type, as defined in the Federal Specifications, in fabric sections which have a tendency to curl at their edges. It should be understood, however, that the invention has utility for other purposes.

Heretofore machines of the character indicated have been provided with a plurality of feed cups arranged to be rotated step by step about vertical axes, the wo'rk being gripped between the cups and advanced thereby. Suitable stitch forming devices are arranged to cooperate with the work in the region of the bite of the feed cups to form the desired type of seam. This is formed adjacent the upper edge of the work which is advanced along a line slightly above the upper faces of the feed cups.

A primary object of the present invention has been to provide a machine of the general character indicated with a simpler form of work feeding mechanism than heretofore provided. The improved feeding mechanism has fewer moving parts than prior feeding mechanisms of the character indicated, and it eliminates certain gearing heretofore required. Nevertheless it serves to suspend the work and advance it through the stitch forming region in a way to insure proper formation of the desired seam.

Toward the foregoing end the machine is provided with only one feed cup, which is arranged for rotation about a vertical axis in the manner customary in relation to cup feed machines. Cooperating with the feed cup in the region of stitch-formation is a spring urged presser element having a vertically disposed, smooth work engaging surface, preferably having a height somewhat greater than the height of the work engaging face of the feed cup. The presser element has a portion in the region of stitch formation which extends above the top surface of the feed cup to provide a backing for the work in that area and preferably has an arcuate portion in advance of the stitch forming region, comparable with the curvature of the work engaging face of the feed cup but in the opposite direction. This arcuate portion of the presser member serves as a guard around the stitch forming elements and facilitates introduction of the worlt and guides the latter toward the point where it is gripped and advanced by the cup; it also provides a V -shaped space for a suitable uncurler guide for certain types of work. Beyond, or in the rear of the stitch forming region, the presser element may suitably be shaped to guide the work properly to a puller mechanism and it may carry a portion of that mechanism.

In the preferred embodiment of the invention, the presser element is mounted at the lower end of a vertically disposed rod or sleeve, or similar support member, arranged to be rocked outwardly about a horizontal pivotal axis, adjacent its upper end, to shift the element away from the feed cup for the introduction and removal of Work. Suitable spring means is provided for rocking 2 the support about such pivotal axis toimpart the desired presser action. i l

Other objects, features and advantages ofthe inventio will appear from the ifollowii'ig detailed description of an illustrative form of the same, given in conjunction with the accompanying drawings,- in which:

Fig. 1 is a rear 'elevational view of the upper portion of a machine embodying the invention;

Fig. 2 is a view part-ly in frontrelevation andv partly in longitudinal vertical section `through the machine o'f Fig. 1;

Fig. 3 is a view partly in end elevation, as viewed from the left in Fig. 2, and partly in transverse vertical section through the machine;

Fig. 4 is an elevational view, similarly to Fig. 3 of a portion of the mach-ine with parts of the frame broken away to disclose the interior construction;

Fig. 5 is a top plan view ofthe machine with a cover member removed and portions of the fra'rne broken away;

Figs. 6, 7, and'8 are perspectiveviews illustrating the stitch forming elements and the work feeding devices at different points in a cycle of operation of the stitch forming elements; i

Fig. 9 is a 4horizontal sectional view through a portion of the frame of the machine, showing the work feeding and associated devicesfand showing the needle in its fully retracted position;

Fig. 10 is a view similar to Fig. 9, with the needle illustrated in a partially shifted position;

Fig. 11 is an exploded 'perspective view of a chain cntting knife and its supporting member;

Fig. 11A is a bottom plan view of the chain cutting means and its support;

Fig. 12 is a perspective view of a guard member embodied in the machine;

Fig. 13 is a view, partly infront elevation and partly in vertical section, showing the feed cup and associated presser member;

Fig. l14 is a perspective view of the presser member;

Fig. 15.is a perspective view of a work guiding member provided within the feed cup; and

Fig. 16 is -a detail view in perspective showing the stitch forming elements adapted to produce a 401 type stitch.

Referring now to `tl1e drawings, there is illustrated a sewing machine having the same rgeneral construction as that illustrated in the patent to Rubel, No. 2,133,229, granted October 11, 1938. The construction, in general, is similar also to the machines disclosed in the patents to Sauer, No. 2,043,712, granted lune 9, 1936, and Hacklander,`N'o.' 2,043,748, granted June 9, 1936. However, the machine illustrated dilfers from those of the patents mentioned in that it is adapted to provide a chain stitch of either the -l-thread, 101 type, or the Z-thread, 401 type, rather than an overedge stitch. It differs also in the nature of the work advancing and guiding means.

Referring now to the drawings, the machine comprises a main frame having a vertically extending support por tion 10 (Figs. V1, 2 and 3) adapted to be mounted on a table or the like. Adjacent its upper end the vertical support 10 has a laterally extending overhanging portion 11. A main operating shaft 12 is journalled in suitable bushings 13 carried by the front end rear walls of the frame. This shaft projects through the walls at both ends and has secured thereto, exterior of the frame, a combined handwheel 'and pulley 14 at each end ofthe shaft. Power may be supplied tothev machine by connect ing either of the pulleys by means of a belt with an electric transmitter or other suitable source of power.

The stitch forming -devices include a horizontally disposed reciprocable needle 15 carried by a needle barv 16 arranged for longitudinal reciprocation within a supporting sleeve 17 extending through a wall of the portion 10 of ithe frame, Within theh'ollow of the frame the needle bar 16 carries a block or yoke 18 to which is pivotally connected one end of a pitman 19 having a strap at its opposite end cooperating with a crank portion of the shaft 12. Through these connectionsl theneedle` will be reciprocated back and forth along a straight line in a horizontal plane.

Cooperating with the needle,when the needle bar is substantially in its outermost position, is a needle thread loop seizing hook 20 suitably secured to -ancl extending downwardly from an oscillatable rod 21. The latter is arranged for oscillation in a bearing sleeve 22 extending Ythrough a wall of the portion of the frame. This rod is inclined downwardlyffrom the frame at an angle of about to the-horizontal and has its -axis in a vertical plane parallel with the verticalY plane containing the axis of the needle bar. Within the hollow of t-he frame the rod 21 has secured thereto, adjacent its upper end, a block 22a (Fig. 3) from which projects laterally a -ball pin 23. The latter is received by a strap 24 at 4the upper end of a pitman 25 which also has a strap 26, at its lower end, cooperating with an eccentric carried by the shaft 12. Through `the connections described, the rod 21 will be oscillated and the element 20 will be given appropriate swinging movements for the purpose of 'seizing and shedding the loop of needle thread. Rod 21 is held against axial movement by suitable collars aflixed thereto cooperating with portions of the frame.

Y A spreader 27 lis arranged to engage-and extend t-he needle thread loop yat the appropriate time to facilitate the passage of the needle therethrough on its next reciprocation through the work.. This spreader 'is suitably mounted on the l'owerend of an oscillatable rod 28 journalled in a bearing sleeve 29 extending through a wall of the frame. Rod 28 is parallel with rod 21 and is posi- 'tioned below and rearwardly of the latter. Within the frame the rod 28 has secured thereto, adjacent its upper end, a lblock 30 (Fig. 3) having a laterally extending ball pin 31 which is received by a strap 32 at therupper end of a pitman having also a strap 33 at its lower end cooperating with an eccentric carried by 'the shaft 12. Through lthe connections described appropriate swinging or oscillatory movements will .be imparted to the spreader. Rod 28 is held against axial movement by certain of the parts secured thereto cooperating with the bearing sleeve 29.

Referring now to Figs. 6, 7, and 8, the coaction of the various stitch form-ing elements is illustrated. After the needle has been passed through the work and begins its retractive movement, a loop of the needle thread 34 will be cast upwardly from the needle and this loop will be seized by a shoulder 3S 'on the hook element 20 as the latter is oscillated into the position shown in Fig.` 7. As the needle continues its retractive movement and starts its outward movement again, the spreader 27 will be oscillated to engage 'the notched end 36 thereof with the lower branch of the needle thread loop to spread it suiciently to `enable the needle to pass another loop through the previous needle thread loop on the next passage of the needle 'through the work, as indi-cated in Fig. 8. It will be understood that in the interim, while the needle is retracted from the work, a feed movement will be imparted to the work by the means to be described. As the needle enters `the prior loop, the hook 20 will be swung outwardly to release the needle thread and the spreader 27 will be returned to its initial position. On continuousvoperation of the machine a suitable line of chain stitches of the 101 type will be formed.

In Fig. 16 a slightly modified arrangement is schematically illustrated for producing a two-thread, 401 type stitch. For this purpose the hook 20, previously described, is replaced by a thread carrying looper 20a having a forwardly extending thread carrying portion 20h which serves 'to pass a looper thread 37 through the loop of needle thread 34a. The-notched end 36 of the spreader 427 of Fig. 6 is arranged to Acooperate with 'a branch of the looper thread to open a loop therein for the passage of the needle 15a therethrough upon its next movement Ithrough the work.

Referring now particularly to Fig. 2, the means for advancing the work in relation to the stitch forming devices will be described. Secured to the shaft12 is an eccentric 38 cooperating with a strap 39 at one end of Ia pitman 40. At its opposite end this pitman carries a strap 41 cooperating with a pin 42 extending laterally from the lower end of an arm 43 of a rock member 44 (Fig. 3). This rock member is mounted on a iixed shaft 45 which extends transversely of the frame and is carried by suitable bosses in the front and lrear walls thereof. An upwardly extending arm 46 of the rock member 44 is provided with an elongated opening 47 arranged to receive a ball pin 48 which may be secured in `any desired position of adjustment along the opening. Cooperating with 'the lball pin '48 is a strap 49 a't one end of a pitman 50, the opposite end of which has la strap 51 cooperating with a ball pin projecting outwardly from the end of an arm 52. The latter projects radially from a plate 53 arranged for oscillation about the axis of la shaft 54. It forms Ithe driving element for a one way clutch unit of any suitable type such as that shown in the patent to Schoij, No. 2,494,006, granted January 10, 1950. It will be understood that upon the oscillation of the plate 53, step by step movements of appropriate length, corresponding with the desired stitch length, will be imparted in one direction of rotation to' the shaft 54. The latter is journalled in a sleeve 55 mounted in and extending downwardly from the portion 11 of the frame. Adjacent its lower end there is mounted on the shaft 54 a feed cup 56, this being secured by one or more Iset screws 56a. Work advancing movements will be imparted to this feed cup upon the intermittent turning of the shaft 54.

Cooperating'with the feed cup to assist in advancing the work is a presser member57 (Figs. l, 2, and 14) which is provided with a vertically extending shank portion S8 arranged to be secured by means of screws 58a to a member 59. The latter is secured by screws 59a to a sleeve 60 (Fig. 2) or a solid rod 60a (Figs. 9 and l0). This sleeve or rod is carried by a rock member 61 having a split sleeve portion arranged to grip the sleeve or rod. It is clamped about the latter by means of a screw 61a (Figs. 1 and 4). Rock member 61 is carried by a rock shaft 62 which is suitably journalled in a bearing sleeve `63 mounted in a downward extension 64 of the frame of the machine. Adjacent its opposite end the shaft 62 has clamped thereon a split sleeve 65. An upwardly extending arm 66 integral with the sleeve cooperates with a pair of adjustable eccentric stop elements 67 and 68 (Figs. 4 and 5) to limit the extent and zone of rocking movement of the arm and hence the shaft 62. Extending horizontally from the sleeve 65 (Fig. l) is another arm 69, the outer end of which extends through an opening in a rod 70, adjacent the upper end of the latter. A spring 71 surrounding the rod engages the under face of the arm 69 and urges the latter upwardly. This tends to rock the member 65, 66, 69 in a clockwise direction (Fig. 1) and thus serves toV urge the presser member 57 yieldingly into engagement with the periphery of the feed cup 56. At its lower'end the spring '71 engages a C-element 72 (Fig. 4) which is secured to the upper end of an adjustable screw threaded. sleeve 73. By appropriate adjustment of this sleeve the tension of the spring 71 maybe varied as desired. Rod 70 extends downwardly through the sleeve 73 and at its lower end has connected thereto a chain 74 adapted to be attached at its other end to an arm of a knee press or treadle member by which the rod may be depressed against the action of the spring 71 and thus rock the shaft 62 and cause the sleeve 60 to be swung outwardly to carry the presser member 57 out of engage ment with the feed cup and thus facilitate the introductionl and removal of work.

Turning now to Fig. 14, further details of the presser member will be described. It has a portion 75 extending horizontally from the supporting shank 58 and provided with a bend 76 at a point adjacent the lineV of feed of the work on the discharge' side of the feed cup. The bend is such as to provide a portion 77 of the presser member which is substantially parallel with the line of feed and is provided with an elongated opening 78 in the region of reciprocation of the needle l5. This enables the needle to be passed through the presser member for cooperation with the hook and spreader element, which are substantially surrounded by the member. Forwardly of the opening 78 the member 57 is provided with a curved portion 79 which extends outwardly in a lateral direction away from the periphery of the feed cup and serves to partially enclose and provide a guard for the stitch forming devices. It thus serves to prevent injury to the operator and it also provides a smooth guiding surface for the work as it is introduced between the feed cup and presser member. As best shown in Fig. 13, the substantially flat portion 77 of the presser member, which extends along the line of feed projects some distance above the upper edge of the feed cup 56. To assist in guiding the upper portion of the work which extends above the feed cup, and to prevent the curling of the upper edge of the work, there is provided, within the feed cup, a member 80 (Figs. 9, 10, and 15). Member 80 has a shank portion 81 provided with an elongated slot 82 by means of which it may be adjustably secured, by a screw 83, to a stationary support 84 extending downwardly from the portion 11 of the frame in front of the shaft 54. A curved portion 85 of the element 80 may thus be positioned close to the inner wall of the rim of the cup 56 to provide a guide surface having approximately the same radius of curvature as the rim of the feed cup. This curved portion of element 80 extends some distance above the level of the top face of the feed cup and, in conjunction with the surface 77 of member 57, provides a narrow channel for the passage of the top portion of the work. A notch or slot 86 provided in the curved part 85 of member 80 permits free passage of the needle through the latter in the course of stitch formation.

Preferably there is provided, in conjunction with the work feeding devices just described, a suitable puller mechanism. This as shown rnay comprise a plate-like element 87 secured by screws, or the like, to a bracket 88 attached to the outer face of one wall of the frame 10. A stud or bolt 89 carried by the plate 87 provides a journal for a toot-hed member or pinion 90 which is arranged to mesh with the serrations or tine teeth provided on the outer face of the rim of the feed cup 56. A screw 89a serves to retain the idler pinion on the stud 89. Meshing with the pinion 90 is another toothed element or pinion 91, which is rotated by the pinion 90. The pinion 91, which serves as a puller roller, is journalled on a stud or bolt similar to the stud 89' and is secured against axial movement by means of a screw 92. Urged yieldingly against the periphery of the puller roller 91 is a plate 93 having a bent and forked end 94, the branches of which extend over and under the part 77 of member 57. The branches of the fork are curled to provide pivot receiving portions cooperating with a pin 95 carried by a plate 96 secured by a screw 97 to the inner face of the portion 77. For the purpose of yieldingly urging the plate 93 against the puller roller 91 there is provided a spring 98 carried by a pin 99 extending from a screw element 100. The latter carries an adjustable collar 101 by means of which the tension 'of the spring may be varied. Screw element 100 is suitably secured to a plate 102 fastened by means of screws 102a to the outer face of portion 75 of member 57. The arrangement is such that the work after passing through the stitch forming point will be gripped and pulled by the action of the roller or pinion 91, the pull so exerted being substantiallyalong the line of feed. As bes't shown inFigs. 6 to 8 inclusive, the puller action so provided acts in part directly along the line of seam formation and thus assists in the proper chaining out of the thread after the work has passed beyond the stitch forming point. Unless a firm puller action is provided along this lines, proper chaining out of the thread under the circumstances mentioned is not assured. Therefore, when the work being stitched is formed of relatively soft and extensible material, it is particularly desirable to have the puller means active directly along the line of seam formation.

To facilitate the cutting of the thread chain at the trailing edge of a piece of work, a suitable thread cutter is provided. This, as illustrated, may comprise a plate 103 (Fig. 11) having an opening 104 cooperating with the bolt or stud which carries the puller roller 91. A blade 105 having a cutting edge 106 is retained by the plate 103 by means of tabs 107 and 108 bent downwardly from the plate and arranged to grip the blade in the manner shown in Fig. 11A. By drawing the thread chain across the cutting edge 106, it is readily severed.

To protect the operator against possible injury from the pinion 90 and the blade 10S a guard 109 (Figs. 9, 10, and 12) is provided. This has a ilat plate-like portion provided with an opening 110 cooperating with the bolt which carries the puller roller 91. A channel portion 111 of guard member 109 extends upwardly along the rear face of the pinion 90 and then inwardly over the ltop of the pinion.

As hereinabove indicated, it is desirable in the handling of certain types of work to provide an uncurler guide in advance of the work receiving throat formed between the feed cup and the presser member 57. This will serve to uncurl the free edges of two sections of the work to be united and to present the latter in ilat surface engagement as they pass between the feed cup and presser bar. The uncurler may be of any suitable construction, such as that disclosed in the patent to Hacklander, No. 2,131,007, granted September 20, 1938. Only a portion of it is shown in Fig. 9. It is designated generally at 112. It comprises a center guide plate 113 and a pair of clamping elements 114 and 115, which serve to hold the Work against the center plate and uncurl the free edges of the work sections as they are drawn forwardly by the feed cup. As shown, the curved portion 79 of presser member 57 enables the positioning of the uncurler guide, when operative, in the same way as when a plurality of feed cups are employed.

As shown in Fig. 3, the portion 10 of the frame is preferably provided with a lubricant reservoir 116 from which the lubricant may bev dispersed as a mist throughout the interior of the hollow frame by means of a disk or plate-like element 117, which is secured to and revolves with the shaft 12.

It is believed that the construction and mode of operation of the various elements of the machine will be readily understood from the foregoing detailed description so that no summary of operation is required.

While a preferred embodiment of the invention has been disclosed in considerable detail, it should be understood that various changes may be made in the construction and arrangement of the various parts without departing from the scope of the invention as defined by the appended claims.

What is claimed is:

1, In a sewing machine a main operating shaft, stitch forming devices including a reciprocable needle, connections from said shaft for operating said devices, a feed cup disposed adjacent the path of reciprocation of said needle and having its axis arranged transversely of said path, connections from said shaft for imparting work advancing movements to said feed cup, and a spring urged non-rotary presser member having avisame a'smooth dat face urged constantly during a sewing operation into cooperation with the -periphery'of saidfeed cup adapted to retain a work piece in cooperation with the latter in the region of stitch formation of said stitch forming devices, said devices being arranged to cooperate only at the side of the work engaged by said presser member in the formation of stitches.k

2. In a sewing machine a main operating shaft, stitch forming devices including a reciprocable` needle, connections from said shaft for operating said devices, a feed cup disposed adjacent the path of reciproeation of said needle and having its axis arranged transversely of said path, connections from said shaft for imparting work advancing movements to said feed cup, and a spring urged non-rotary presser member having a smooth flat face urged into cooperation with the periphery of said feed cup adapted to retain a work piece in cooperation with the latter in the region of stitch formation of said stitchv forming devices, said devices Lbeing disposed and arranged to cooperate in the formation of'stitches atthe side of the work engaged by said pressermember, and said presser member having a portion in advance of the region of stitch formation curved away from the periphery of said feed cup and extending in front of the stitch forming devices to provide a Vguard around said devices.

3. In a sewing machine having a frame, a main drive shaft journalled therein and stitch forming devices including a reciprocable needle, work advancing means which comprises a single feed cup arranged for rotation about a vertical axis, connections from said shaft for imparting work advancing turning movement to said feed cup, and a presser member yieldingly urged against the periphery of said feed cup, said presser member having a flat work engaging portion arranged for only bodily movement toward and away from said feed cupand providing a vertically disposed surface along which the work may slide upon the turning of said feed cup, said surface extending well above the top of said feed cups and said work engaging portion of said member having an opening therethrough intermediate its top and bottom edges for the passage of said needle in the course of its reciprocation.

4. In a sewing machine having a frame, a main drive shaft journalled therein and stitch forming devices including a horizontally reciprocable needle work advancing means which comprises a single feed cup, a vertically disposed cup supporting shaft carried by said frame, said feed cup being secured to said cup supporting shaft with its upper surface below the plane of reciprocation of said needle, connections from said main drive shaft for imparting work advancing turning movement to said feed cup supporting shaft, and a presser member yieldingly urged against the periphery of said feed cup, said presser member having a Work engaging portion arranged for only bodily movement toward and away from said feed cup and providing a surface along which the work may slide upon the turning of said feed cup, said work engaging portion of said member extending above the level of the upper surface of said feed cup and having an opening therethrough for the passage of said needle in the course of its reciprocation, and said stitch forming devices cooperating to form stitches only at the side of said work engaging portion which faces away from said feed cup. i

45` In a sewing machine having a frame, a main drive shaft journalled therein and stitch forming devices including a horizontally reciprocable needle, work advancing means which comprises a single feed cup, a vertically disposed cup supporting shaft carried by said frame, said feed cup being secured to said cup support ing shaft with its upper surface below the plane of re?- ciprocation of said needle, connections from said main drive shaft for imparting work advancing turning movement to said feed cup supporting shaft, a presser mem-- ber yieldingly urged against the periphery of said feed cup," said presser'mfe'rnber Yhaving a work engaging portion arranged .fornly bodilyl movement toward and away from said feed cup and 'providing a surface along which VYthe work may slideupon-the turning of said feed cup, said work engaging portion of saidy member extending Vabove the level of the upper surface of said feed cup and having an opening therethrough for the passage of said needle in the course of its reciprocation, and sta-y tionary means mounted within said feed cup presenting a vertically disposed surface extending above the level of the upper surface of said feed cup and cooperating with said presser member in guiding the work to the path of reciprocation of said needle.

6. In a sewing machine a main operating shaft, stitch forming devices including a' reciprocable needle having portions cooperating to form stitches, connections from said shaft for operating said devices, a feed cup disposed adjacent the path of reciprocation of said needle and having its axis arranged transversely of said path, con neetions from said shaft for imparting work advancing movements to said feed cup, Va spring urged presser member arranged for movement only toward and away from said feed cup and having a smooth flat face urged into cooperation with the periphery of said feed cup adapted to retain a work piece in cooperation with the latter in the region of stitch formation of said stitch forming devices, said presser memberhaving a portion in advance of the region of stitch formation curved away from the periphery of said lfeedcup and extending in front of the cooperating portions of the stitch forming devices, and an uncurler guideV disposed in the space between the periphery of said feed cup and said curved portion of said presser member for uncurling the free edge of the work as it is advanced by said feed cup.

7. ln Ya sewing machine having a main frame and a main drive shaft journalled therein, work supporting and advancing means comprising a vertically disposed feed shaft, a feed cup secured to said feed shaft` connections from said drive shaft to said feed shaft for imparting work feeding turning movement to said feed cup, a presser member urged yieldingly against the periphery of said feed cup in a predetermined region, an elongated support for said member extending substantially parallel with said feed shaft and having its upper end pivotally mounted on said frame, said member being fixedly secured to said support and having a smooth surface opposed to the periphery of said feed cup for the sliding of work thereover upon the turning movement of said feed cup, and stitch forming means cooperating with the Work adjacent said predetermined region and on the side of said memberaway from said feed cup.

8. In a sewing machine having a main frame and a main drive shaft journalled therein, work supporting and advancing means comprising a vertically disposed feed shaft, a feed cup secured to said feed shaft, connections from said drive shaft to said feed shaft for imparting work feeding turning movement to said feed cup, a presser member urged yieldingly against the periphery of said feed cup in a predetermined region, an elongated support for said member extending substantially parallel with'said feed shaft and having its upper end pivotally mounted on said frame, said member being kIixedly secured to said support and having a smooth surface opposed to the periphery of said feed cup for the main drive shaft'journalld therein, work supporting and advancing means comprising a vertically disposed feed shaft, a feed cup secured to said feed shaft, connections from said drive shaft to said feed shaft for imparting work feeding turning movement to said feed cup, a presser member urged yieldingly against the periphery of said feed cup in a predetermined region, said member being arranged for only bodily movement toward and away from said feed cup and having a smooth surface opposed to the periphery of said feed cup for the sliding of work thereover upon the turning movement of said feed cup, and stitch forming means cooperating with the work adjacent said predetermined region, said stitch forming means comprising a reciprocable needle mounted for reciprocation on said frame and complementary stitch forming elements cooperating with said needle on the side of said presser member which is remote from said feed cup to form a through and through line of stitching in said work, a portion of said presser member extending forwardly in the direction from which the work is fed to the machine and partially surrounding and providing a guard for the active portions of said complementary stitch forming elements forwardly of the region of stitch formation.

10. In a sewing machine having a main frame and a main drive shaft journalled therein, work supporting and advancing means comprising a vertically disposed feed shaft, a feed cup secured to said feed shaft, connections from said drive shaft to said feed shaft for imparting work feeding turning movement to said feed cup, a presser member urged yieldingly against the periphery of said feed cup in a predetermined region, an elongated support for said member extending substantially parallel with said feed shaft and having its upper end pivotally mounted in said frame, said member being lixedly secured to said support and having a smooth surface opposed to the periphery of said feed cup for the sliding of work thereover upon the turning movement of said feed cup, stitch forming means cooperating with the work adjacent said predetermined region, said presser member being provided with a portion in advance of said predetermined region which is curved away from the periphery of said feed cup to provide a substantially V-shaped Work-introducing space, and an uncurler guide disposed in said space for uncurling the free edge of the work as it is delivered to said predetermined region.

References Cited in the le of this patent UNITED STATES PATENTS 1,145,148 Kaufman July 6, 1915 1,397,622 Corrall Nov. 22, 1921 2,448,774 Cook Sept. 7, 1948

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