US3384040A - Attachment for belt loop machine - Google Patents

Description

y 1968 P. FRETTOLOSO 3,384,040

ATTACHMENT FOR BELT LOOP MACHINE Filed May 19, 1965 4 Sheets-Sheet 1 N i FIG. I

INVENTOR. 4 PA U L FRETTOLOSO 5 &

ATTORNEYS.

May 21, 1968 P. FRETTOLOSO ATTACHMENT FOR BELT LOOP MACHINE 4 Sheets-Sheet 2 Filed May 19, 1965 INVENTOR. PA UL FRETTOLOSO y 21, 9 P. FRETTOLOSO 3,384,040

ATTACHMENT FOB BELT LOOP MACHINE Filed May 19, 1965 4 Sheets-Sheet :5

FIG.3

IN VEN TOR. PA UL FRE T 704 0.50

dam a A T TORNEYS.

May 21, 1968 P. FRETTOLOSO ATTACHMENT FOR BELT LOOP MACHINE 4 Sheets-Sheet 4 Filed May 19, 1965 INVENTOR. PA 0L FRETTOL 0.50

United States Patent 3,384,044 ATTACENT FOR BELT LOOP MACHINE Paul Frettoloso, Brooklyn, N.Y., assignor to U.S. Blind Stitch Machine Corporation, Plainview, N.Y., a corporation of New York Filed May 19, 1965, Ser. No. 457,105 9 Claims. (Cl. 112-2) ABSTRACT OF THE DTSCLOSURE An attachment for sewing machines which make belt loops, such as blind stitch sewing machines. The attachment is to be mounted on a sewing machine which has a means including a laterally extending rocker shaft and the like for intermittently feeding a longitudinally folded and stitched narrow band Web of fabric and the like intermittently rearwardly in response to rocking of this rocker shaft. The attachment includes, behind the sewing machine, a moistener, a dry ironer behind the moistener, and a draw means behind the dry ironer. The attachment receives the web in position for the web to be longitudinally movable and to be operably coupled to the moistener to be moistened thereby and operably coupled to the ironer to be ironed thereby, with the web then further extending through the draw means which draws the web rearwardly. A means synchronizes the operation of the draw means and the rocker shaft for actuating the draw means to draw the web rearwardly in synchronization with feeding of the web by the sewing machine, and a knife blade means is situated behind the draw means and includes blades which are mounted so as to be normally spaced from each other for receiving between themselves the web, while the blades of the knife blade means are movable one toward the other in a transverse plane for severing the web. A means is coupled to the draw means for actuating the knife blade means once per selected number of draw movements of the web.

This invention relates to improvements in attachments for machines for making belt loops, such as blind stitch sewing machines. In particular, the invention relates to an improved attachment system for automatically ironing and then cutting to length a belt loop web after it has been stitched by the sewing machine.

In the making of belt loops, it is common to utilize a blind stitch sewing machine and to feed a web of material longitudinally from front to rear under the needle of such machine. As the material is thus fed, normally by a feed dog or the like on the sewing machine, it is automatically folded by any suitable folder attachment, and the overlapped side edge portions of the material are then blind stitched by the machine. The web of material which has been thus blind stitched must then be ironed and cut into the individual belt loop lengths.

The usual ironing attachment in use today is a steam iron attachment. However, this has proved relatively unsatisfactory since the steam has affected the operation of the sewing machine and has required frequent oiling of the parts, and also has caused deterioration of the parts. While cutting attachments have been known, these have commonly been relatively complicated in mechanical construction, and have often been subject to jamming by the material being fed and cut.

An important object of this invention is to provide a complete ironiri and cutting attachment which is integrated in performance with the operation of the blind stitch sewing machine, which irons without the use of steam, which is readily adaptable to ironing webs of different thicknesses and which provides a simplified cutting operation with a minimum of parts and with improved 3,384,040 Patented May 21, 1968 "ice means to prevent jamming of the material in the cutting portion of the attachment.

Another important object of the invention is to provide an improved ironing attachment for machines of this type which eliminates the use of steam.

Another important object of this invention is to provide an improved cutting attachment for this type of machine which is simple in operation and construction and which minimizes the risk of jamming of the material in the cutting attachment.

In accordance with a preferred embodiment of the invention, the attachment includes an ironing station located longitudinally behind the blind stitch sewing machine in the path of travel of the belt loop material as it is fed from front to rear by the feed dog of the blind stitch sewing machine. A further cutting and draw station is located rearwardly of the ironing station and also in line with the longitudinal path of travel of the belt loop web through the sewing machine. The cutting station is provided with draw means which acts upon the web to draw it intermittently rearwardly in synchronization with the movement of the material through the sewing machine by means of the sewing machine feed dog. In the ironing station, there is provided a base heat conducting block having a flat upper surface and a through longitudinal channel extending to such upper surface, or width to accommodate the web slidably upon the bottom of the channel, and of depth substantially in excess of web thickness. An upper block overlies the entire upper surface of the base block and has a longitudinal depending rib which extends conformingly and movably into the channel to bear against the top of the web. The upper block is urged downwardly by means of springs so as to clamp the web slidably frictionally between the rib and the bottom of the channel. Any suitable means is provided to heat the base block. Just before the web enters the ironer, it passes over a water transfer roller partly immersed in water in a trough so that the web is moistened. thereby preventing the fabric from being scorched or acquiring a shine. The upper block is mounted in such a way that it can be manually raised to permit manipulation of the material in the channel of the lower block, and it is also possible to adjust the spring tension depending upon the thickness and characteristics of the web which is being ironed.

Also in accordance with the preferred embodiment of the invention, the draw means at the cutting station comprises a draw roller and an idler roller with the web received frictionally between the two rollers. The draw roller is driven in synchronization with the feed dogs of the sewing machine. A longitudinally extending openended throat tube is located behind the two rollers and receives the web. This throat has a horizontal bore and a rearwardly and downwardly inclined roof, the idler roller being slightly behind the draw roller so as to feed the web downwardly against the throat floor.

The cutter also includes a pair of laterally extending, transversely relatively movable, normally spaced cutting blades behind the throat and receiving the web therebetween. A control cam is coupled to the draw roller; and means, including such control cam, are synchronized with the draw roller movement and operative once per revolution thereof so as to actuate the blades during an actual draw movement of the draw roller so as to move the blades relatively to each other to sever the web and then to move the blades relatively to each other to return them to their normal positions. As a result, when the draw roller completes the particular movement during which the cutting action takes place, the cam moves past the point at which it actuates the cutting means. Although the web continues to be moved rearwardly while the blades are closed, the throat is of length and height so as to accommodate arching movement of the web against the throat roof, thereby to create slack in the web. Once the blades move back to their normal positions, the resilience of the relatively stiff folded over and stitched belt loop material causes it to move rearwardly and return from its arched position to its normal position flat against the floor of the throat.

The above cutter arrangement is highly advantageous since it permits the use of relatively standard operative clutch components and since it permits the control of blade movement to be by a simple solenoid, the circuit of which is closed by a rnicroswitch actuated by the aforesaid cam. Accordingly, there are a minimum of parts and a minimum of electric circuitry, while the device has positive means to prevent jamming of the material.

Other objects and advantages of the invention will become apparent from the following description in conjunction with the annexed drawing, in which a preferred embodiment of the invention is disclosed.

In the drawing,

FIG. 1 is a top plan view of the attachment shown in position relative to a conventional blind stitch sewing machine, the sewing machine being shown in phantom;

FIG. 2 is a vertical, longitudinal section on line 22 of FIG. 1;

FIG. 3 is a transverse section on line 3-3 of FIG. 2;

FIG. 4 is an end elevation of the left end of the attachment, as taken in FIG. 1, this being referred to as the rear end of the attachment, and particularly shows the cutting station;

FIG. 5 is a fragmentary transverse vertical section on line 5-5 of FIG. 2, showing a detail of the ironer; and

FIG. 6 is a fragmentary vertical section showing a detail of the throat in relatiton to the cutting blades of the cutting attachment.

The drawing is generally to the scale of a working embodiment of the invention, and reference is made to the drawing to complete the disclosure herein.

Upon reference to the drawing in detail, it will be noted that it shows the attachment applied to a conventional blind stitch sewing machine 10, this machine not being described in detail. The attachment includes an ironing station 11 comprising a moistener 12 just behind a blind stitch machine and an ironer 13 behind the moistener 12. The attachment further comprises a cutting and draw station 14 located behind the ironer 13. The web 15 is drawn through a folder (not shown) in the rearward longitudinal direction of arrow 16, by means of the feed dogs of the blind stitch sewing machine 10, and is stitched by the machine. The web 15 is drawn rearwardly of the machine by means of draw roller 17 located at the station 14, the web 15 being drawn successively through the longitudinally aligned moistener 12, ironer 13, and cutting station 14 by means of the draw roller 17, the action of which is synchronized with the action of the feed means in the blind stitch sewing machine 10. All of the aforesaid components are mounted upon any suitable table 18. This makes it possible to design the moistener 12, ironer 13 and cutting station 14, respectively, as distinct subassemblies.

The ironing station The ironing station 11 includes a longitudinally elongated base block 26 which is secured to table 18 by means of brackets 21. The moistener 12, as shown in FIGS. 1 and 2, may have any suitable construction, the construction shown in the drawing accordingly, being illustrative only. At the front, trough 22 is mounted upon the upper face of block 20 and contains water 23. This trough 22 has an open top and near its rear it supports a knurled water transfer or moistening roller 24 by means of a laterally extending roller shaft 25 journalled in notches 26 formed in the sidewalls of trough 22 and extending to the top thereof. The level of the water is such that the lower portion of roller 24 is in the water. A further roller 27 is turnably mounted above roller 24 by means of a further lateral shaft 28 which is journalled in any suitable bracket arm 29 pivotally attached to the side of trough 22. Shaft 28 is biased downwardly by means of tension spring 30, one end of which is fixed to plate 31 which overlies the top of the trough forwardly of the rollers and the other end of which bears against the top of shaft 28. Web 15 is drawn through any suitable guide bracket 32 mounted upon plate 31 forwardly of the two rollers, and is from there drawn frictionally between the two rollers. Since the web 15 is drawn rearwardly by means at station 14, the two rollers 24 and 27 simply turn as idler rollers in the respective directions of arrow 24a and 27a. As a result, liquid from trough 22 is transferred to the lower surface of web 15.

ironer 13, best shown in FIGS. 1, 2 and 5, includes a lower or base conducting block 41; which is mounted upon base 20. This block 46 is generally rectangular but has a cutout 41 in one side, near the bottom thereof, for reception of electrical elements. Specifically, this cutout 41 has an upper central extension 41:: in which heating wires 42 are located. These heating wires 42 are connected to terminals 43 on a block 44 within the recess, from which further wires 45 are led to any suitable source of electric power (not shown). For convenience, certain of the electrical details shown in FIG. 2 are omitted in FIG. 5, and in general, a number of the conventional electrical details re omitted. it will be apparent that any suitable adjustable thermostat (not shown) may be located in the recess 41 and connected in operative electric circuit (not shown) with the electric wires 42 and the source of power, the thermostat having an external control knob d6 which may be turned to locate its pointer 4-7 against any desired marking of the scale Put in other terms, the base unit 40 is heated by any suitable electric means, and its temperature may be adjusted by means of knob .6 in conventional manner.

The block 4! has a full length through longitudinal channel extending downwardly from its upper surface 40a, the depth of such channel 56 being preferably far greater than the thickness of the web 15. The width of channel 59 is sufficient to accommodate the desired width of web 15. It will be apparent that a web of less width than that shown may also be ironed successfully. The ironer further includes an upper block 51 preferably of the same length as block 40 and having 2. depending longitudinally extending rib 52 which is preferably coextensive in length with and extends conformingly and movably into channel 50'. In other words, the rib 52 is preferably of about the same width as channel 58, although the height of rib 52 may be slightly less than the height of channel 50.

In order to control the tension with which rib 52 is urged into channel 50, bracket 53 of inverted L-shape is provided. This bracket 53 has a vertical arm 54 located slidably against one side of block 49 and of block 51 (the sides of blocks 40 and 51 being preferably respectively coplanar). Near its bottom, arm 54 has a vertically elongated slot 55. A screw shank 56 extends through slot and is threaded into a corresponding laterally extending lateral bore 57 in block 49, the shank 56 being provided with an enlarged head 58. A corresponding laterally extending head 59 is secured to the upper end of arm 54 of the relatively heavy bracket 53. Bracket 53 also comprises a horizontal arm 60 which connects with the upper end of arm 54 and opposes the upper face of block 51. It will be apparent that by loosening the screw shank 56, the vertical position of arm 60 may be adjusted and arm 69 may be secured in such adjusted position by then tightening the screw 56 with its head 58 hearing against arm 54.

Rod 61 extends vertically through a through bore Mia in arm 60, the lower end portion 610 of rod 61 being screw-threaded and being threaded into a corresponding vertical bore in the top of block 51. Rod 61 is provided with an enlarged upstanding handle 62 with an enlarged upper head 63, the handle 62 providing at its lower end a shoulder which bears against the upper face of arm 60. A washer 64 is placed around rod 61 against the upper face of block 5-1, and a coil compression spring 65 extends around rod 61 and between washer 64 and the lower face of arm 60. The spring 65 exerts a downward tension upon block 51 which is adjustable by varying the position of arm 60, and the result is to clamp the web frictionally slidably between the lower face of rib '52 and the bottom of channel 50. However, since rod 61 is slida'ble within the through vertical bore 60a of arm 60, it is possible to raise block 51, by means of handle head 63, to the broken line position of FIG. 5, so as to space the rib 52 away from the bottom of channel 50. This permits initial threading of the web into and through the channel 50.

The blocks and 51 are preferably made of any suitable heat retaining metal, such as commonly used in ironers, so that the moistened web is ironed fiat between the parallel and planar lower rib surface and bottom channel surface The cutting station This is shown in FIGS. 1-4 and 6. The cutting station 14 includes a frame having a horizontal base supported upon the rear of table 18, a side vertical and longitudinal wall 71 fixed to base 70 at the right of the attachment, as viewed from front to rear, a further vertical and longitudinal wall 72 fixed to the top of base 70 to the right of the path of travel of web 15, as viewed from front to rear, a front vertical and lateral frame wall 73 fixed to the front edges of walls 71 and 72 and also extending across and above the path of travel of web 15, and a platform 74 fixed to frame pieces 72 and 73 and overlying the path of travel of web 15. Of course, any suit-able frame arrangement may be utilized.

Adjacent the front of cutting station 14, horizontal and lateral shaft 75 is journalled in the frame pieces 71 and 72, somewhat above base 70; and collars 76 are mounted upon shaft 75 on either side of frame member 72. Knurled draw roller 17 is mounted upon shaft 75 in line with the path of travel of web 15 through the ironer. Control roller 77 carrying cam 77a is mounted upon shaft 75 adjacent standard 71. Shaft 75 is driven by any suitable one-way clutch mechanism 78 mounted upon said shaft 75, the driving member of clutch mechanism 78 being a collar 79. This collar 79 has a depending extension 80 which is coupled to the feed mechanism of the blind stitch sewing machine 10, in a manner to be described in detail presently. The element 80 is reciprocated longitudinally. In the forward stroke of element 80, the clutch mechanism 78 is engaged and roller 17 is moved in the direction of arrow 17a, or in other words, in such direction as to draw the web 15 rearwardly over the upper portion of roller 17. In the rearward stroke of element 80, the one-way clutch 78 is disengaged. The one-way clutch mechanism 78 may be any conventional mechanism, and accordingly is not shown in detail. For example, the clutch may be an overrunning clutch such as shown in Catalogue 105 B, published October 1961, of Formsprag Company, Warren, Mich. A further one-way clutch 178 on shaft 75 also conventional and not shown in detail, is active to prevent shaft 75 from turning so as to turn roller 17 in the reverse of its feeding directions while clutch 78 is disengaged.

The element 80 is coupled to the rocking shaft 81 of the blind stitch sewing machine 10, which is part of the intermittent feed mechanism including the usual feed dogs which carries the web 15 rearwardly in the direction of arrow 16. This mechanism is conventional, and accordingly, is not described in detail. In any event, the rocking shaft 81 is extended outwardly of the machine and an arm 82 is fixed by any suitable means to shaft 81 and extends generally downwardly therefrom. A longitudinally, downwardly rearwardly extending shaft 8.3 is

attached at its front and rear ends to respective turnbuckles 84 and 85. The front of turnbuckle 84 carries a vertically extending plate portion 86 which is secured by lateral pivot 87 to knurled disk 86a. Screw 87, which is olfset from the center of disk 86a, secures disk 86a to arm 82. Therefore, disk 86a may be adjusted about the axis of screw 87 thereby to regulate the length of stroke of shaft 83 corresponding to rocking of shaft 81. The rear turnbuckle carries a rear extension plate 88 which also extends vertically, and said plate 88 carries a lateral shaft 39 which extends through a slot 80a in element 80, such shaft 89 having an enlarged head 90 to retain it in place. In any event, further detail is believed unnecessary since it is obvious that the connection between the shaft 75 of roller 17 and the rocking shaft 81 of the sewing machine 10 is such that reciprocating rocking movement of the element 82 carried by shaft 81 in the direction of arrow 82a produces, through the medium of the overrunning clutch mechanism 78, corresponding movement of draw roller 17, in the direction of arrow 170, so as to advance the web material 15 rearwardly through the ironing station 11 and through the cutting station 14.

In order to mount the necessary idler roller in the cutting mechanism, shaft 92 is journalled in uprights 71 and 72 above shaft 75 and carries collars 93 on either side of upright 72. Above roller 17, shaft 92 carries a yoke 94 having parallel downwardly rearwardly extending arms 95, between which idler roller 96 is journalled. The web 15 is drawn frictionally between the narrow peripheral surfaces of the rollers 17 and 96. Preferably, the line connecting the axis of the two rollers 17 and 96 is inclined slightly upwardly rearwardly from the axis of roller 17 or in other words, the roller 96 engages the roller 17 slightly behind the vertical line through the axis of roller 17 (FIG. 1). In this way, the rollers urge the web slightly downwardly rearwardly, this being aided by the vertical location of the front guide member 99 of the cutter mechanism, this guide member 99 being slightly above the level at which the web 15 engages the rollers 17 and 96. The guide bar 99 extends generally horizontally and is adjustably secured at one end, by means of screw 100 extended through elongated slot 101 in bar 99, to the front of standard 72. At its free end, bar 99 has a notch 102 extending downwardly from its upper edge and the web 15 extends slidably between the sides of notch 102 and over the bottom surface thereof.

Outwardly of standard 71, handle 104 transverse to shaft 92 is fixed thereto by means of collar 105. A compression spring 106 extends around shaft 92 and between standard 71 and collar 107 fixed to shaft 92 inwardly of standard 71. It will be apparent that by proper manipulation of handle 104, the idler roller 96 may be raised to permit threading of web 15 between the rollers 96 and 17.

What is referred to in the claims as an open-ended, longitudinally extending throat tube 110 is positioned to receive web 15 behind rollers 17 and 96. To support this member a further frame piece 111 is fixed to base 70 and extends upwardly therefrom behind rollers 17 and 96. An L-shaped bracket 112 has a vertical arm with an elongated slot 113 through which securing screws 114 extend, these screws 114 also extending in the usual way into the side of frame member 111, so as to permit vertical adjustability of throat 110. The throat 110, as best shown somewhat diagrammatically in FIG. 6, includes a horizontal floor element 116 which extends rearwardly of the throat element proper as shown in both FIGS. 6 and 2, and which receives the web 15, in the direction of-arrow 15a, as closely as possible after it passes between rollers 17 and 96. Indeed, fioor element 116 has a forwardly extending tongue 116a which extends over roller 17 within peripheral groove 17b thereof and conforming in shape thereto so as to make certain that web 15 does not jam between the throat and roller 17. The throat 110 also includes side walls and a roof 118, the front portion 118a of which is forwardly upwardly inclined.

The web is out immediately after it leaves the rear end of throat 110, by suitable arrangement of knives, this mechanism being best shown in FIGS. 2 and 4.

The knife mechanism includes a fixed laterally and vertically extending blade 120 fixed to the frame by means of bolts 121. When the web 15 leaves the throat, it rides over the upper sharpened edge of blade 120. The movable blade 122 has a downwardly offset portion 122a which is secured to fixed blade 120 by means of longitudinally extending pivot screw 123 having a nut 124 secured thereto and a head 125. The blade 122 is biased to the open position shown in full lines in FIG. 4 by means of a spring 126 connected between lateral wing 12212 of blade 122 and bracket 127 fixed to frame base 70.

Tension of the blade 122 against the fixed blade 120 is controlled by means of a further plate 130 mounted upon the same pivot 123. Near the free end of blade 122, a screw 131 is screwed through a threaded opening of plate 130 and against blade 122, with the turned position of this control screw adjusting the tension of blade 122 against blade 120 (see FIG. 4).

The actual movement of the moveable knife blade 122 is controlled by vertically extending solenoid which is mounted upon frame piece 74. This solenoid 140 has a bottom vertically extending plunger 141 which extends slidably through an opening in frame piece 74. The lower end of plunger 141 is connected to a yoke 142, with a longitudinally extending roller 143 being turnably connected between the vertical lateral arms of said yoke 142 as shown in :FIG. 2. This roller 143 bears against the upper surface of knife 122 adjacent its free end. It will be apparent that when the solenoid is energized and the plunger 141 lowered, the knife 122 is moved downwardly, so that its lower cutting edge crosses the upper cutting edge of fixed knife 120, thereby cutting the web 15 between the knife cutting edges. Upon de-energization of the solenoid and return of its plunger to raised position, the spring 126 automatically returns knife 122 to its full line position of FIG. 4. If the cutters jam and spring 126 does not re turn knife 22 to its full line position, the solenoid cannot operate. FIG. 4 also shows the broken line lowered position of the knife blade 122. In addition, FIG. 4 shows a further control screw 145 threaded through a lateral threaded opening in the vertical upright 72 and adjusted, by means of head 146 and control nut 147, so as to engage frictionally against the upper portion of the free end of the movable knife blade 122 when it is in its lower or broken line cutting position shown in FIG. 4. Thus, the screw 145 pervents any wobbling of the end of the movable knife blade when it is cutting the fabric.

Summary of operation The operation of the various parts has been discussed above, and at this point it is accordingly only necessary briefly to summarize the overall operation of the machine. At the start of operations, a length of Webbing is run through the sewing machine and folded and stitched in the usual manner, the web being threaded through the ironing and cutting stations by raising the movable ironing shoe and the idler roller of the cutting station respectively. By closing any appropriate switch in the solenoid circuit, the timed operations can then be begun.

As the Web is drawn backwardly by the draw means of the knife station, in conjunction with the feed dogs of the sewing machine, the fabric is moistened and then ironed. Furthermore, once per revolution of the control cam at the cutting station, corresponding to a selected length of web, the control cam strikes the microswitch element 150, thereby closing a microswitch 151 in the electric circuit of the solenoid. As a result, the movable knife blade is moved in its cutting action and severs the web 15 between the blades. The timing is such that the cutting action takes place during a rearward movement of the web 15 corresponding to the linkage between the cutting station draw means and the control shaft of the sewing machine. As a result, for an instant while the cutting blade is in its lowermost position, the web 15 travels against the blade, thereby causing the web to be arched within the throat 110, against roof 118. Upon the return of the movable blade to its normal raised position, the springiness of the web material within the throat causes it to return to normal condition fiat against the floor of the throat, with resulting slight rearward movement of the free rear edge portion of the web. As sOOn as the next feed stroke of the machine control shaft begins, a new cycle of formation of a cut length of web is resumed.

While a preferred embodiment of the invention has been disclosed, and various possible changes, omissions and additions have been indicated in the invention, it will be apparent that various other changes, omissions and additions may be made in the invent-ion without departing from the scope and spirit thereof.

What is claimed is:

1. Attachment for a sewing machine having means including a laterally extending rocker shaft and the like for intermittently feeding a longitudinally folded and stitched narrow band web of fabric and the like intermittently rearwardly in response to rocking of said shaft; said attachment comprising: a moistener behind said sewing machine, dry ironing means behind said moistener, and draw means behind said dry ironing means, said attachment receiving said web in position for said web to be longitudinally movable and to be operably coupled to said moistener for moistening thereby and operably coupled to said ironing means to be ironed thereby and further to extend through said draw means, said draw means drawing said web rearwardly, means synchronizing said draw means and said rocker shaft for actuating said draw means to draw said web rearwardly in synchronization with the feeding of said web by said sewing machine, knife blade means behind said draw means including blades which are mounted to be normally spaced to receive said web therebetween and to be moved one toward the other in a transverse plane and thereby to sever said web, and means coupled to said draw means for actuating said knife blade means once per selected number of draw movements of said web.

2. Attachment for a sewing machine having means including a laterally extending rocker shaft and the like for intermittently feeding longitudinally rearwardly a folded and stitched narrow band web of fabric and the like; said attachment automatically ironing and severing segments of selected length of said web in synchronization with the feeding of said web by said sewing machine, said attachment comprising successive stations respectively receiving said web from said sewing machine and moistening mean, dry ironing means, drawing means and cutting means respectively situated successively at said stations for successively moistening, dry ironing, drawing, and cutting said web, means synchronizing said drawing means and said rocker shaft for actuating said drawing means for drawing said web rearwardly in synchronization with the feeding of said web by said sewing machine, and means synchronizing said drawing means and said cutting means for operating in response to and during draw movement of said web for actuating said cutting means once per selected number of draw movements of said web.

3. Attachment for a sewing machine having means including a laterally extending rocker shaft and the like for intermittently feeding longitudinally rearwardly a folded and stitched narrow band web of fabric and the like; said attachment automatically ironing and severing segments of selected length of said Web in synchronization with the feeding of said web by said sewing machine, said attachment comprising successive means respectively receiving said web from said sewing machine for respectively moistening, dry ironing, drawing and cutting said web, means synchronizing said draw means and said rocker shaft so that said draw means draws said web rearwardly in synchronization with the feeding of said web by said sewing machine, and means coupling said draw means and said cutting means to actuate said cutting means once per selected number of draw movements of said web.

4. Attachment for a sewing machine having mean including a laterally extending rocker shaft and the like for intermittently feeding longitudinally rearwardly a folded and stitched narrow band web of fabric and the like in response to rocking of said shaft; said attachment comprising: an ironer behind said sewing machine comprising a moistener, heat transfer block means having a through longitudinal channel behind said moistener and adapted to receive said web frictionally slidably therethrough, said moistener positioned thereby to moisten said web before it enters said channel, and means heating said block means, said block means having means exerting flattening tension on the faces of said web so as to iron the web by said tension and said heat; and drawing and cutting means hehind said ironer comprising a throat having a longilongtudinal through opening, draw means behind said throat adapted to receive said web with said web extending slidably through said throat, means synchronizing said draw means and said rocker shaft so that said draw means draws said web rearwardly in synchronization with the feeding of said web by said sewing machine, knife blade means behind said throat which are mounted to be normally spaced and adapted to receive said web therebetween and to be moved towards each other in a transverse plane and thereby to sever said web and to block movement of the end of the web, and means coupled to said draw means and operative to actuate said knife blade means once per selected number of draw movements of said web and during the course of such draw movement, said throat shaped to accommodate arching of said web during the remainder of such draw movement while the end of the web is blocked from movement by the blades.

5. Ironer for a narrow-band web of fabric and the like being drawn longitudinally, comprising a lower base heatconducting block having a flat upper surface and a through longitudinal channel extending to said upper surface, said channel of width to accommodate said web slidably upon the bottom of said channel and of depth substantially in excess of the web thickness, an upper block overlying the entire upper surface of said base block and having a longitudinal depending rib extending conformingly and movably into said channel for hearing aginst the top of the web when in said channel upon the bottom thereof, a bracket having a vertical arm and a horizontal arm, means vertically sidably securing said vertical arm to a side of said lower block with said horizontal arm opposing and spaced from the upper surface of said upper block and with said vertical arm secured to said lower block in selected relative position so as to determine and select the spacing between said horizontal arm and said upper block, spring means between said horizontal arm and said upper block and urging said upper block downwardly, and handle means connected to said upper block and extending through said horizontal arm and accessible above said horizontal arm and adapted to be raised so as to elevate said rib in said channel to permit threading of said web through said channel.

6. Apparatus for drawing and cutting a narrow-band web of fabric and the like comprising a draw roller and an idler roller having lateral axes and adapted to receive said web frictionally therebetween, means intermittently turning said draw roller so as to draw said web longitudinally rearwardly, a longitudinally extending openended throat tube behind said rollers and receiving said web, said throat having a horizontal fioor and a rearwardly downwardly inclined roof, said roller slightly behind said draw roller so as to feed said web downwardly against said throat floor, a pair of laterally extending cutting blades movable one relative to the other and situated behind said throat for receiving said web, means including a control cam synchronized with the draw roller movement and operative once per rotation thereof to actuate said blades during a draw movement of said draw roller to move said blades one relative to the other to sever said web, said throat having a length and height to accommodate arching movement of the web against said throat roof while said web is moved against the blades.

7. Attachment for a sewing machine having means including a laterally extending rocker shaft and the like for intermittently feeding longitudinally rearwardly a folded and stitched narrow-band web of fabric and the like in response to rocking of said shaft, said attachment comprising drawing and cutting means comprising a throat having a longitudinal through opening, draw means situated forwardly of said throat for feeding a web with said web extending slidably through said throat, means synchronizing said draw means and said rocker shaft for actuating said draw means draw said web rearwardly in synchronization with the feeding of said web by said sewing machine, knife blade means behind said throat and including blades which are [mounted to be normally spaced from each other in a rest position of said knife blade means for receiving said web therebetween and for moving one toward the other in a transverse plane for severing said web and for blocking movement of the end of the web, and means coupled to said draw means and for actuating said knife blade means once per selected number of draw movements of said web and during the course of said draw movement, said throat being shaped to accommodate arching of said web during the remainder of such draw movement while the end of the web is blocked from movement by the blades.

8. Attachment for a sewing machine having means including a laterally extending rocker shaft and the like for intermittently feeding longitudinally rearwardly a folded and stitched narrow-band web of fabric and the like in response to rocking of said shaft; said attachment comprising draw means for receiving and drawing said web, means synchronizing said draw means and said rocker shaft for actuating said draw means to draw said web rearwardly in synchronization with the feeding of said web by said sewing machine, knife blade means hehind said draw means including blades which are mounted to be normally spaced in a rest position of said knife blade means for receiving said web between said blades in said rest position of said knife blade means and for moving one toward the other in a transverse plane for severing said web, and means coupled to said draw means for actuating said knife blade means once per selected number of draw movements of said web.

9. Attachment for a sewing machine having means including a laterally extending rocker shaft and the like for intermittently feeding longitudinally rearwardly a folded and stitched narrow-band web of fabric and the like in response to rocking of said shaft, said attachment comprising a draw roller and an idler roller having lateral axes for receiving said web frictionally therebetween, means synchronizing said draw roller and said rocker shaft for actuating said draw roller to draw said web rearwardly in synchronization with the feeding of said web by said sewing machine, a longitudinally extending open-ended throat tube behind said rollers for receiving said web, sa-id throat having a horizontal floor and a rearwardly downwardly inclined roof, said idler roller being situated slightly behind said draw roller for feeding said web downwardly against said throat floor, cutting means including a pair of laterally extending, relatively movable, normally spaced cutting blades behind said throat for receiving said web therebetween for cutting said web and blocking said web from rearward movement from said throat, a control cam coupled to said draw roller to turn in unison therewith, and means actuated by said control cam once per revolu- 1 1 12 tion thereof and coupled to said blades for actuating 1,795,056 3/1931 Tomarin 383 said blades during a draw movement of said draw roller, 2,406,022 8/ 1946 Little 3871 said throat having a length and height to accommodate 3,273,522 9/1966 Gore et a1 112--10 arching movement of the Web against said throat roof 416,115 11/ 1889 Mayall 22331 X 1,186,229 6/1916 Ray 223-32 X FOREIGN PATENTS 541,704 5/1957 Canada. 966,650 8/1964 Great Britain.

While said web is moved against the blades.

References Cited UNITED STATES PATENTS 1,048,794 12/1912 Bernard et a1. 383 1,463,262 7/1923 Gray 1122 19 HERBERT F. ROSS, Primary Examiner.

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