US2043748A

US2043748A - Cup feed machine

Info

Publication number: US2043748A
Application number: US730135A
Authority: US
Inventors: Hacklander Hans
Original assignee: Union Special Machine Co
Current assignee: Union Special Machine Co
Priority date: 1934-06-11
Filing date: 1934-06-11
Publication date: 1936-06-09
Anticipated expiration: 1953-06-09
Also published as: GB448259A; DE621417C; FR780080A

Description

June 9, 1936. H. HACKLANDER CUP FEED MACHINE" Filed June 11, 1934 4 Sheets-Sheet 1 June 9, 1936. H. HACKLANDER CUP FEED MACHINE 4 Sheets-Sheet 2 Filed June 11, 1934 GHWWAAS June 9, 1936. H, HACKLANDER CUP FEED MACHINE Filed June 11, 1934 4 SheetsSheet 3 June 9, 1936- H. HACKLANDER CUP FEED MACHINE Filed June 11, 1934 4 Sheets-Sheet 4 ating with the needle in operated.

UNITED STATES PATENT OFFICE our FEED MACHINE Hans Hacklander, Tinley Park, 111., assignor to Union Special Machine Company, Chicago, 111., a corporation of Illinois Application June 11 1934, Serial No. 730,135

. 15 Claims. ((31.112-16) The invention relates to -new and useful improvements in a machine for stitching fabrics of the type known as a cup feed machine.

' An object of the invention is to improve the operating mechanism for the stitch forming devices so that said devices may be operated by parts which are well balanced in their rotation so as to prevent undesirable vibrations in the machine.

A further object of the invention is to provide a. simplified operating mechanism for the stitching devices wherein there are comparatively few parts and wherein all parts are positively A still further object of the invention is .to provide a machine of the above type wherein the needle bar and the thread carrying looper supporting bar are given their endwise movement by cranks oppositely disposed on a crank shaft so as to counter-balance the weight of the rotating parts in said shaft.

A still further object of the invention is to provide a machine of the above type wherein the feed cups for supporting and feeding the material are carried by depending members supported from above the feed cups, and wherein the needle guards and the stitch finger cooperits movements and in its stitch formation, are adjustably supported from the members which support the feed cups. 7 These and other objects will in part be obvious and will in part be hereinafter more fully disclosed.

In the drawings which show by way of illus tration one embodiment of the invention- Figure 1 is a view in vertical section through the machine on a plane passing through the bushing for theneedle bar, the bushing for the looper bar, and the supporting bushings for the shafts carrying the feed cups.

Fig. 1a is a detail in perspective showing a portion of the main actuating shaftwith the opposed cranks which operate the looper bar and the needle bar.

Fig. 2 is a view from the rear partly in section through the main actuating shaft, partly in section through the Support for the oscillating member which moves the looper bar endwise, and partly in section through the means which oscillates the looper bar and through the feed regulating means.

Fig. 3 is a perspective view showing the feed cups, the manner for supporting the same in the housing, and the stitch forming devices.

Fig. 3a is a perspective view showing the needle,

looper and spreader and the arrangement of the threads at the time when the needle point is entering thelooper thread loop.

Fig. 4 is aview partly in horizontal section and partly in plan showing the upper faces of the feed cups and the needle guides and stitch finger associated'therewith and the manner of supporting the same.

Fig. 5 is a plan view of the Supporting bracket for the needle guards.

Fig. 5a is an edge view of the same.

Fig. 6 is a plan view of the front needle guard detached from the machine.

Fig. 7 is a plan view of the rear needle guard detached from the machine. 5

Fig. 8 is a plan view of the cover plate for the needle slot.

Fig. 9 is a plan view of the needle guide and stitch finger supporting plate.

The invention has to do with a machine for stitching fabrics and the type of machine known as the cup feed machine. The machine includes a main housing having an auxiliary projecting portion from which are suspended the feed cups which support and feed the fabric as it is being stitched. The housing is completely closed so that no oil can escape therefrom due to the throwing of the oil by the rotating parts. The needle bar reciprocates in a horizontal line and is movable in a bushing extending through the front wall of the housing and closing said housing. The actuating shaft is located in a line which lies substantially in the same horizontal plane as the line of reciprocation of the needle, bar. The needle bar is directly connected to a crank in theactuating shaft by a link. Asso-. ciated with the needle is a thread carrying looper which moves into andout of the needle thread loop and also moves from one side of the fabric sections being stitched to a position at the other side thereof. A spreader associated with the needle and looper engages the looper thread loop and spreads the same so that the needle enters said loop and thus overedge stitches are formed. The looper is carried by abar whichhas both an endwise and an oscillating movement. This bar is mounted in a bushing in the front wall of the housing and this bushing completely closes the housing while permitting said bar to have its endwise and oscillating. movement in the bush- '50 ing. The looper bar is moved endwise by a rocking member which turns about an axis located above the axis of the main actuating shaft. At tached to and movable with this member is a depending arm, the lower end of which moves in at substantially 180 from the crank operating the needle bar and a link connects said crank to this depending member so that it is oscillated and thus endwisemovements are imparted to the looper bar. These two cranks being opposed to each other provide a balanced disposition of the material which rotates about the axis of the shaft. The looper is oscillated by an eccentric strap cooperating with an eccentric on the main actuating shaft. The feed cups, as noted above, are suspended from above. They are attached to shafts which rotate the same, and these shafts are mounted in supporting sleeves therefor. Attached to the supporting sleeve for the inner feed cup is a plate which extends along the inner surface of the peripheral flange of the feed cup and slightly above the same. This plate is provided with a slot through which the needle passes and this slot serves as a needle guide.

The plate is adJustably attached to this sleeve supporting the feed cup so that it may be shifted toward and from the peripheral edge of the feed cup and the bracket carried by the sleeve on which said plate is mounted for amusizment is also mounted for vertical adjustment. The stitch finger is can'ied by this plate and overlies the peripheral edge of the feed cups in the usual manner. The sleeve supporting the outer feed cup is provided with a flange adjacent the upper' face ofthe feed cup and on this flange is ad'- iustably mounted a bracket which may be shifted toward and from the peripheral edge of the outer feed cup. Attached to the bracket is a front needle guard and also a rear needle guard between which the n'eedle moves. The rear needle guard overlies the peripheral edge of the feed cup and aids in stripping of the fabric therefrom after it is stitched. This bracket is also provided with a V-shaped groove which serves as a needle guide and overlying the outer end of the groove is a cover plate which covers the point of the needle and aids in the supporting of the needle against any lateral strain while the looper is entering the needle thread loop. It is thought that the invention .will'be better understood by a detailed description of the present illustrated embodiment thereof.

The-machine'includes a main housing is'formed with a supporting base 2 and an overhanging upper portion 3. Depending from this overhanging portion of the housing is a sleeve 4 .in which is mounted a shaft and attached to this shaft is the inner feed cup 5. The outer feed is that the two feed cupsare rotatedin thesame timing. It is understood, of course, that they are rotated in opposite directions and the fabric is clamped between the two feed cups and sup ported thereby for stitching. The shaft carrying the inner feed cup is rotated by means of aclutch drum mechanism, indicated as a whole at". This clutch drum mechanism is operated' from 8 link I4 pivoted toan arm I5 and the.

for reciprocation in a horizontal line. The needle I which arm I5 is pivotally supported by an arm I. mounted in the housing so that it can be adjusted to different set positions. The arm I5 is oscillated by means of an eccentric strap ll cooperating with an eccentric on the actus ating shaft Ill. The manner of operating the feed cups and the separating of the same for inserting or removing the material forms no part of my present invention, but is shown, described and claimed in my co-pending application Serial No. 736,269, filed July 20, 1934.

As shown'in Figs. 1 and 3 the stitch forming mechanism includes a needlel9 carried by a needle. bar 20 and this needle bar is mounted bar reciprocates in a bushing 2| can'ied by the front wall of the main housing I, and closing. the opening therethrough so that no oil can be thrown by the actuating parts onto the material being stitched. Cooperating with the needle I9 is a thread carrying looper 22. This thread carrying looper 22 iscarried by a looper supporting bar 23. The looper extends through a socket formed therein, and is clamped tothelooper supporting bar by means of a set screw 24. The looper supporting bar 23 extends through a bushing 25 located in an opening in the front wall of the housing and closing said opening. The looper bar is supported atits rear end in a bushing 25a carried by the housing.

Cooperating ,with thelooper and the needle is a spreader 26. Said spreader 26 is carried by a spreader supporting .bar 21 which extends through a bushing 28 located in an opening in the front wall of the housing and closing said opening. It will be noted that the needle bar, the spreader supporting bar and the looper supporting bar all operate in bushings \which close the openings formed in the front wall so that the front wall is closed and no lubricating voil thrown by the moving parts can be caused to contact with the material being stitched. It is also noted that the clutch operating drum i3 and the gear wheels H and I2 are all mounted in the extensionof the housing and the shafts which carry and. operate the feed cups respectively extend through bushings in the lower wall of this extension which is close to the same and prevent any oil from being thrown through these' openings onto the fabric being stitched. 1

The stitch forming devices operate in the usual way. The needle reciprocates back and forth 7 and asit throws out its loop the thread carrying looper enters said loop and will be moved laterally through the endwise 'movement of the 3 looper supporting bar as it moves into-the loop so that said looper is positioned well above the edges of the fabric sections and on the other side thereof. The spreader then engages the looper thread-100p extending from the eye of the looper and the previous stitch and depresses the same so that the needle will pass into the looper thread loop. In Fig. 3a of the drawings there. is shown the position of the looper and the spreader at the'time when the looper thread loop is held open for the needle to enter the Game. It is not thought necessary to describe in further detail the stitch formation that is accomplished by the stitching devices disclosed.i ,It may be again noted that the looper bar has 10 not only an endwise movement, but it has an oscillating movement in order to move the looper into and out of the needle thread loop and to carry it to a position where the'spreadei' may cooperate therewith and by a movement in a II single plane to position the looper thread loop 7 for the needle to'entcr.

' The mechanisms for operating the stitch forming devices will now be described in detail. The needle bar 20;:reciprocates in a line lying in a 'horizontal plane passing substantially through the center of the main actuating shaft I 8. The main actuatingllshaft in Fig. 1 is indicated by the broken liner As shown in Fig. 1a the main actuatingshaft is provided with a crank pin 29.

This crank pin isconnected to a member 30 which is formed as a part of the shaft and also apart of the crank and extends radially of the axis of the shaft. A link 3| is pivoted at 32 between spaced lugs carried by a head 33 which is attached to the needle bar 20. This link co- .operates with the crank 29. As the main actuating shaft I8 rotates the needle bar will be moved endwise reaching the outer end of its stroke as the link crosses dead center at the right of the actuating shaft, as viewed in Fig. 1, and reaching the inner end of its stroke as the link crosses dead center'at the inner side of the actuating shaft, as viewed in this figure. A This gives a direct thrust to the needle bar so that there is no lateral cramping of the same in its bearings and the effective movement of the link slows down as the direction of movement of the needle bar is reversed, thus making a very emcient and positive means consisting of few parts for the reciprocation of the needle bar.

The looper bar 23 is given both an endwise movement and an oscillating movement as above noted. It is moved endwise by means of an oscillating arm 34, which oscillating arm is fixed to a sleeve 35 mounted on a bushing 38,. which bushing in turn is mounted on a stationary shaft 3?. The bushing and sleeve 35 are limited in their endwise movement on the stationary shaft by an abutment lug 38 at one end and by a collar 35 at the other end which is fixed tothe shaft 31 by means of aset screw 40. The arm 34 is connected at its upper end toalink 4!. The link 4| is shaped so as to straddle the upper end of the arm and a pivot pin 42 passing through the ends of the link 4| pivotally connects said link to the arm 34. The link at its other end carries a sleeve 43 which engages a pin 44 so that it is free to oscillate on the pin and also free to move endwise on the pin. This pin is connected to a collar 45 which is mounted on the looper supporting bar 23 so that the looper supporting bar may be oscillated within said collar. At the end of the looper supporting bar is a collar 46 which is fixed to the bar. There is also a collar 41 fixed to the looper bar and the collar 45 lies between the

collars

46 and 41. Thus it is that the oscillations of the arm 34- through the link 4| will impart endwise movements to the looper supporting bar 23 and at the same time notv in any way interfere with the oscillating of the looper supporting bar. The collar 46 carries a projecting stud 46a provided with a ball stud and an eccentric strap 46b cooperates with the ball stud and an eccentric on the main actuating shaft l8. Thus it is that the loopersupporting baris oscillated. i

The sleeve 35 carries a depending arm 48, at the lower end of which is mounted a ball stud 49. A link 50 cooperates with this ball stud and carries a sleeve which cooperates with the crank 5| in the main actuating shaft l8. As shown in the persnective view (Flg. 1a) the inain actuating shaft 52. The two crank pins 29 and 5| are connected by the member 53 and this makes up this portion of the actuating shaft with the two cranks arranged so that they are substantially opposed one relative to the other. The sleeve 54 at the end of the link 50 is a split sleeve and the parts thereof are secured together by the usual screws so that this permits the end of the link to be attached to the crank between the

members

52, 53. The link 3| carries at its outer end a sleeve 55 which is a split sleeve secured by screws in the usual way so that the outer end of the link can be connected to the crank 29.

It will be noted that the crank 29 has a slightly greater throw than the crank 5| for the reason that the needle bar moves through a greater distance in its reciprocation than the looper supporting bar. It will also be noted that the two cranks shaft will turn about the axis of the shaft with 25 smoothness and with a minimum of resulting vibration. 'The reciprocating parts reverse their movement substantially at the same time.

The shaft 31 extends all the way through the abutment lug 38 and is held in a fixed position 30 by a clamping bolt 56 which passes through a sealing washer 51 and is threaded into the end of v the shaft.- There is the same construction at the other end of the shaft so that there is no chance of oil working out through the supporting means for 35 thisstationary shaft.

The spreader bar 21 has no endwise movement but is oscillated in its supporting bushing. At the upper inner end of this spreader supporting bar there is'a coller 58 which is fixed to the bar. This collar carries a stud 59 provided with a ball With which an eccentric strap 60 engages. This eccentric strap 60 cooperates with an eccentric on the main actuating shaft and thus it is that the spreader supporting bar is oscillated.

There is also mounted on the main actuating shaft a disk 6| which runs in an oil bath and throws oil which adheres thereto from the peripheral edge thereof through the action of centrifugal force thereon and this causes aspray of oil to pass all through the housing for the lubrication of the parts. This oil spraying disk forms no part of the present invention, but is shown, described and claimed in the application of George Sauer, Serial No. 718,855, filed April 3, 1934.

The main actuating shaft extends through bushings at each end thereof mounted in the main housing. One of these bushings is indicated in 66. There is a similar belt wheel 61 at the other 'end of the shaft. Any oil working out along the bushing 52 will be trapped in the recess 6'! and will be directed in a channel 68 which leads back into the housing. This prevents any oil from working out through the bearings for the main actuating shaft.

From the above it will be apparent that an operating mechanism for the stitch forming devices of a sewing machine of the cup feed type anced and completely housed so that there is no chance of any lubricating oil being'thrown by the parts so as to drip from the housing and contact the fabric being stitched. Itwill be noted that the-looper supporting bar inclines downwardly from its inner end toward the outer end over the feed cups and therefore when at the loop taking position it is close to the needle, while when .10 it is moved laterally it is raised and moves up over the edges of the fabric sections. The spreader supporting bar is also inclined downwardly from its inner end to the outer end over the feed cups and therefore it oscillates in a plane which cuts the needle path at an angle and this enables the spreader to engage the looper thread loop at a point directly over the plane of the fabric sections and spread the loop to.one side of the fabric sections for the needle to en- .ter. This particular inclining of the looper supporting bar and the spreader supporting bar per se form no part of the present invention and is shown, described and claimed in the application of Charles F. Rubel and Anton Wyleta, filed July 25, 1932, Serial No. 624,548.

Cooperating with the needle and the stitch forming devices is a needle guide, also needle guards and a stitch finger. These devices are all carried by a depending portion it carried .by the housing. The sleeve 4 supporting the inner feed.

cup extends through this depending portion of the housing. Said depending portion has a flat face on which a bracket 68 is mounted. The bracket is secured to the depending portion by v screws 10 which pass through slots in the bracket extending in-a direction so as to permit the bracket to beadjusted vertically and secured in different set positions by these clamping screws. The bracket at the lower end thereof is provided with a lateral seat II onwhich is mounted the shank 12 of a plate 13. This place 13 extends outward and is curved at its outer face to conform to the shape of the peripheral flange or -edge portion'of the feed cup and extends all the way to and across the needle path as shown in Fig. 4. As shown in Figs. 4 and-8 said plate 18 has a curved face 14 which as noted'above lies along the inner face of the peripheral flange of the inner feed cup. Said plate has an'upstanding curvede edge portion and there is a slot 15 formed therein through which the needle passes, and this slot serves as a needle guide to prevent the deflecting of the needle as the point thereof contacts with the material" and passes through the same. The point of the needle .passes first through this slot and then into the fabric sec-- tions. The shank I2 is slotted and a screw l6 passing through the slot secures this plate in adiusted position. This adjustment is horizontal and enables the curved face of the plate to be moved closer to or further away from the peripheral' flange of the inner feed cup. Also mounted on this plate I3 is the stitch finger which is indicated at ll. Said stitch finger is secured 65 to the plate 13 by clamping screws '58, is. Said stitch finger is of the usual type. It overlies both feed cups at the fabric receiving side thereof and terminates in a point at the fabric discharge side .so that the stitches formed thereover will slip off from the end of the stitch finger.

At the lower end of the sleeve l carrying the shaft which supports the outer feed cup is a flange 19. Fixed to this flange i9 is a'bracket 8B. The bracket is shown in plan view in Fig. 5. This bracket carries a forward needle guard and also it terminates in the end portion 90.

a rear needle guard and a cover plate which covers the needle slot in the bracket at the outer end of the needle path so as to prevent the bending of the needle as the looper enters the needle thread loop. The forward needle guard 5 is shown in detail in Fig. 8 and consists of a shank portion 8| provided with a slot 82 through which a clamping screw 83 passes. The outer face of'this forward needle guard is curved as indicated at 84 so as to conform with the inner 10 surface of the peripheral flange on the outer feed cup. The shank 8| has alaterally extending portion 85, the left hand face of which as viewed in Figs. 4 and 6 is close to the needle path and serves to guard the needle and prevent lateral deflec- 15 tion thereof. The bracket as shown in Fig. 5a is provided with a V-shaped slot 86 and the needle reciprocates in this V-shaped slot which serves as a guide for the needle. The. face of this forward needle guard is close to the V-shaped 20 channel 86. Attached to this bracket 88 is a rear needle guard which is shown in detail in Fig. 'I. Said needle guard includes a shank 81 which is slotted and which is secured to the bracket 80 by means of a clamping screw which 25 permits the needle guard to be adjusted toward and from the peripheral edge of the outer feed cup. The outer face of this rear needle guard is curved as indicated by the broken line 88 so as to lie close to the inner face of the peripheral 30 flange of the outer feed cup. It has an overhanging portion terminating in the curved face 89 which extends slightly beyond the outer edge of the peripheral flange of the feed cup. The rear needle guard extends along the peripheral flange 35 to a point adjacent the V-shaped slot 86 where The needle passes along this V-shaped slot and between the end 80 of this rear needle guard and the end 85 the needle and theneedle point passes underneath the cover plate. The looper moves alongside ofthis cover plate 9| and as it enters the needle thread loop and begins its initial pull thereon the cover plate prevents any lateral bending of the needle.

From the above it will be apparent that devices have been provided for guiding and for guarding the needle and for holding .it to its straight line path of movement, and these devices are capable of adjustment relative tothe feed cups and are carried by the supporting means for the feed cups in such a way that they do not in any way interfere with the free rotation'of the feed cups. It is obvious that minor changes in the details of construction and the arrangement of the parts may be made without departing from the spirit of the invention as set forth in the appended claims. v i

Having thus fully-described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A sewim machine including in combination a main housing, feed cups carried thereby for that said bar reaches the forward end of its stroke substantially as the needle bar reaches the forward end of its stroke, and means actuated from said shaft for oscillating said looper supporting bar.

2. A sewing machine includingin combination a inainhousing, feed cups carried thereby for supporting and feeding the fabric sections being stitched, a horizontal reciprocating needle bar, a

needle carried thereby, a looper supporting barmounted for endwise and oscillating movements about its axis, a looper carried thereby, a main actuating shaft mounted in said housing, cranks disposed substantially diametrically upon opposite sides of the axis of said shaft, a link cooperating with' one of said cranks and directly.

connected to the end of the needle bar for 1e ciprocating the same, and means cooperating with the other crank and connected to the looper bar for reciprocating the same endwise so that said bar reaches the forward end of its stroke substantially as the needle bar reaches the. forward end of its stroke.

3. A sewing machine including in combination a main housing, feed cups carried thereby for supporting and feeding the fabric sections being stitched, a horizontal reciprocating needle bar, a needle carried thereby a looper supporting bar mounted for endwise and oscillating movements about its axis, a looper carried thereby, 'a main actuating shaft mounted in said housing, cranks disposed substantially diametrically upon opposite sides of the axis of said shaft, means op-- erated by one of said cranks and connected directly to said needle bar for reciprocating the same, a member mounted for oscillation and connected to said looper supporting bar for reciproeating the same, and .means cooperating with the other crank and connected to said member for oscillating'the same, said member being pivoted intermediate its ends so that said looper bar will reach the forward end of its stroke substantially as the needle bar reaches the forward end of its stroke.

4. A sewing machine including in combination a main housing, feed cups carried thereby for supporting and feeding the fabric sections being stitched, a horizontal reciprocating needle bar,

' a needle carried thereby, a looper supporting bar mounted for endwise and oscillating movements about its axis, a looper carried thereby, a main actuating shaft mounted in said housing, cranks disposed substantially diametrically upon opposite sides of the axis of said shaft, a link cooperating with one of said cranks and connected to said needle bar for reciprocating the same, a member pivoted intermediate its ends and connected to said looper supporting bar for reciproeating the same, and a link cooperating with the other crank and connected to said member for oscillating said member.

5.- A sewing machine'including in combination a main housing, feed cups carried thereby for supporting and feeding the fabric sections being stitched, a horizontal reciprocating needle bar, a needle carried thereby, a looper supporting bar mounted for endwise and oscillating movements thereby and connected to bar for oscillating the same.

about its axis, a looper carried thereby, a actuating shaft mounted in said housing, cranks disposed substantially diametrically upon opposite sides of the axis of said shaft, means cooplooper supporting bar for reciprocating the same, 10

a second arm carried by said sleeve, and a link cooperating with the other crank and connected to said second arm for oscillating the sleeve.

6. A sewing machine including in combination a main housing, feed cups carried thereby for 15 supporting and feeding the fabric sections being stitched, a horizontal reciprocating needle bar,

a needle carried thereby, a looper supporting bar mounted for endwise and, oscillating movements about its axis, a looper,carried thereby, a main 20 actuating shaft mounted in said housing, cranks disposed substantially diametrically upon opposite sides of the axis .of said shaft, means cooperating with one of said cranks and connected to said needle bar. for reciprocating the same, a 25 fixed shaft located above said main actuating shaft, a sleeve .mountedior oscillation on said fixed shaft, an arm carried by said sleeve and projecting upwardly therefrom, means for connecting said arm to said looper supporting bar 30 for reciprocating the same, an arm connected to said sleeve and depending therefrom, and a link connected to the lower end of said arm and to said other crank for oscillating the sleeve.

,7. 'A sewing machine including in combination 35 a main housing, feed cups carried thereby for supporting and feeding the fabric sections being stitched, a horizontal reciprocating needle bar,

a needle carried thereby, a looper supporting bar mounted for endwise and oscillating movements about its axis, a looper carried thereby, a main actuating shaft mounted in said housing, cranks disposed substantially diametrically upon opposite sides of the axis of said shaft, the axis of said main actuating shaft being disposed in a 45 horizontal plane in which said needle bar re.-

'bar for reciprocating the same, said link being substantially in line with the needle bar when said needle bar is at the ends of its reciprocation, means operated by the other crank and connected to said looper supporting bar for moving said looper supporting bar endwise, an eccentric on said main actuating shaft, and means actuated said looper supporting 8. A sewing machine including in combination a main housing, feed cups carried thereby for supporting and feeding the fabric sections being stitched, a horizontal reciprocating needle bar, a needle carried thereby, a looper supporting bar mounted for endwise and oscillating movements about its axis, a looper .carried thereby, a main actuating shaft mounted in said housing, cranks disposed substantially diametrically upon opposite sides of the axis of said'shaft, the axis of said main shaft lying in a horizontal plane in which said needle bar reciprocates, a link connected to one of said cranks and to said needle bar for reciprocating said needle bar, a stationary shaft mounted in said housing and having its axis located above the axis of the main actuating shaft,

a sleeve mounted for oscillation on said stationary shaft, an arm depending from said sleeve, the lower end of said arm moving in an arc substantially tangential to said horizontal plane containing the axis of the main actuating shaft, a link connected to'said other crank and to the end of said arm for oscillating said'sleeve, an arm extending upwardly from said sleeve, a link connected thereto, a collar mounted on said looper supporting bar to which said link is pivotally con- 10 nected, said collar being free to turn on said looper supporting bar, and means for restraining endwise movement of the collar on the bar whereby the oscillations of said sleeve impart endwise movement to said looper supporting bar.

15. 9. A- sewing machine including in combination a'main housing, feed cups carried thereby for supporting and feeding the fabric-sections being stitched, a horizontal reciprocating ne edle bar, a needle carried thereby, a looper supporting bar ilov mounted for endwise and oscillating movements about its axis, a looper carried thereby, a main actuating shaft mounted in said housing, cranks disposed substantially diametrically upon opposite sides of the axis of said shaft, the axis of 25 said main shaft lying in a horizontal plane in which said needle bar reciprocates, a link connected to one of said cranks and to said needle bar for reciprocating said needle bar, a stationary shaft mounted in said housing and having its axis 80-1ocated above the axis of the main actuating shaft, a sleeve mounted for oscillation on said stationary shaft, an arm depending fromsaid sleeve, the lower end of said am moving in an are substantially tangential to said horizontal #5 plane containing the axis of the main actuating shaft, a link connected to said other crank and to the end of said arm for oscillating said sleev an arm extending upwardly from said sleeve, a link connected thereto, a collar moimted on said 40 looper supporting bar to which said link is pivotally connected, said collar being free to turn on said looper supporting bar, means for restraining endwise movement of the collar on the bar whereby the oscillations of said sleeve impart endwise d5 movement to said looper supporting bar,'said stationary shaft being mounted in openings formed in the side walls of the housing and terminatin at the outer faces of said sides walls, a bolt threaded into each end of said stationary shaft,

50 and a sealing washer between the head of the bolt and the casing for securing said shaft in a fixed position and for sealing the openings in which said shaft is mounted.

, 10. A sewing machine including in combination 65 a main housing feed cups carried thereby for supporting and feeding the fabric sections being stitched, a horizontal reciprocating needle bar, a

needle carried thereby, a looper supporting bar mounted for endwise and oscillating movements about its axis, a looper carried thereby, 'a'main actuating shaft located within said housing,

sleeve bearings mounted in openings in the side walls of the housing and closing the same, bush-- 65 ings in said sleeve bearings through which said main actuating shaft extends, said sleeve bearings having means for trapping and returning lubricating oil to the housing, means actuated by said shaft for reciprocating said needle bar,

70 means actuated by saidshaft for moving said looper bar endwise, and means actuated by said shaft for oscillating said looper bar.

11. A sewing machine including in combination a main housing having 'a laterally projecting por- 75 tion, sleeve members supported thereby, shafts extending through said sleeve members, cooperating feed cups carried by the respective shafts at the lower ends thereof, a horizontal reciprocating needle, a needle bar carrying said needle, a

main actuating shaft, means operated thereby 5 for reciprocating said needle bar, a looper coopcrating with said needle, a looper supporting bar moimted for oscillation and endwise movement carrying said looper, means operated from said shaft formoving said looper bar endwise, means 101 operated from said shaft for oscillating saidlooper bar, a spreader cooperating with the looper and the needle, a spreader supporting bar, means actuated from said shaft for oscillating said spreader supporting bar, a bracket member attached to the sleeve supporting the inner feed cupand mdunted thereon for vertical adjustment, a plate mounted on said bracket member having a' curved.

face conforming to the curvature of the flange of the inner feed cup, and means for supporting said plate whereby it may be adjusted toward and from said flange, said plate having a slotformed therein serving as a guide for the needle. 12. A sewing machine including in combination a main housing having a laterally projectmg portion, sleeve members supported thereby, shafts extending through said sleeve members, cooperating feed cups carried by the respective shafts at the lower ends. thereof, a horizontal reciprocating needle, a needle bar carrying said 36 needle, a main actuating shaft, means operated thereby for reciprocating said needle bar, a looper cooperating with said needle, a looper supporting bar mounted for oscillation and endwise movement carrying said looper, means operated from I said shaft for moving said looper bar endwise,

means operated from said shaft .for oscillating said looper bar, a spreader cooperating with the looper and the needle, a spreader supporting bar,

means actuated from said shaft for oscillating said spreader supporting bar, a bracket member attached to the sleeve supporting the inner feed him and mounted thereon for vertical adjust- 'ment, a plate mounted on said bracket member having a curved face conforming to the curva--- of the flange of the inner feed cup, means for supporting said plate whereby it may be adjusted toward and from said flange, said plate having a slot formed therein serving .as a guide for the needle, and stitch flnger carried by said plate and overlying the flanges of the feed cups. 13. A sewing machine including in combination a main housing having a laterally projecting portion, sleeve members supported thereby, shafts 7 extending through said sleeve members, cooperating feed cups carried by the respective shafts at the lower ends thereof, a horizontal reciprocating needle, a needle bar carrying said needle, a main actuating shaft, means operated thereby for reciprocating said needle bar, a looper cooperating with said needle, a. looper supporting bar mount ed for oscillation and endwise movement carrying said looper, means operated from said shaft for moving said looper bar endwise, means operated from said shaft for oscillating said looper bar, a spreadercooperating with the looper and the needle, a spreader supporting bar, means actuated from said shaft for oscillating said spreader supporting bar, said sleeve carrying the shaft supporting the outer feed cup having a projecting flange at its lower end, a bracket carried by said flange and having a V-shaped groove therein for guiding the needle, a forward needle guard adjustably attached to said bracket and bracket and having a face lying along the other side of said needle bar for guarding the needle. 14. A sewing machine including in combination a main housing having a laterally projecting portion, sleeve memberssupported thereby, shafts extending through said sleeve members, cooperating feed cups carried by the respective shafts at the lower ends thereof, a horizontal reciprocating needle, a needle bar carrying said needle, a main actuating shaft, means operated thereby for reciprocating said needle bar, a looper cooperating with said needle, a looper supporting bar mounted for oscillation and endwise movement carrying said looper, means operated from said shaft for moving said looper bar endwise,

means operated from said shaft for oscillating said looper bar, a spreader cooperating with the looper and the needle, a spreader supporting bar, means actuated from said shaft for oscillating said spreader supporting bar, said sleeve carrying the shaft supporting the outer feed cup having a projecting flange at its lower end, a bracket car'- ried by said flange and having a V-shaped groove therein for guiding the needle, a forward needleguard adjustably attached to said bracket and having a face lying alongside of the needle path,

and a rear guard adjustably attached to said bracket and having a face lying along the other side of said needle bar for guarding the needle, said last named needle guard having a projecting' portion overlying. the flange on the outer feed cup for stripping the fabric therefrom after it is stitched.

15. A sewing machine including in combination a main housing having a laterally projecting portion, sleeve members supported thereby,

shafts extending through said sleeve members, cooperating feed cups carried by the respective shafts at the lower ends thereof, a horizontal reciprocating needle, a needle bar carrying said needle,'a main actuating shaft, means operated 10 thereby for reciprocating said needle bar, a looper cooperating with said needle, a looper supporting bar mounted for oscillation and endwise movement carrying said looper, means operated from said shaft for moving said looper bar endwise, means operated from'said shaft for oscillating said looper bar, a spreader cooperating with the looper and the needle, a spreader supportingbar, means actuated from said shaft for oscillating said spreader supporting bar, said sleeve carrying the shaft supporting the outer feed cup having a projecting flange at its lower end, a bracket carried by said flange and having a v-shaped groove therein for guiding the needle, a forward needle guard adjustably attached to said bracket and having a face lying alongside of the needle path, and a. rear guard adjustably attached tov said bracket and having a face lying along the other side of said needle bar for guarding the needle, and a cover plate attached to said bracket and overlying the outer end of the V-shaped slot in the bracket guiding the needle and under which the end portion of the needle passes.

HANS HACKIANDER.