Abstract: The presser device includes a feeder foot, a holding foot and a link transmission provided between the two feet, the two feet cooperating alternately. The feeder foot has a spur which cooperates temporarily with a mating surface on the cloth feeder. During the feed phase, the spur is obliquely inclined and does not press against the material being sewn, and therefore permits dependable ruffling of an upper layer of sewing material with respect to a lower layer of sewing material. At the start and at the end of the feed phase, the spur is vertically directed and presses against the sewing material, and thus smooth tension-ruffle-free sewing together, particularly of thin material, is made possible.

Abstract: Tufting apparatus for producing textile goods includes a plurality of hollow needles which are reciprocated vertically to penetrate a backing. Yarn is fed pneumatically through the needles and implanted into the backing, the backing being shifted transversely by an amount corresponding to the space between adjacent needles so as to implant a transverse row across the backing. A knife blade is associated with each needle and positioned on the opposite side of the backing from a presser foot. The knife blade engages a point forming flat angled surface of the needle, the angled surface being formed with an upwardly and inwardly extending slot which serves to capture and center yarn exiting the needle and provides a sharp edge which cooperates with the knife blade for cutting the yarn.

Abstract: Sewing machine with an upper feed mechanism is provided with a stroke-adjusting system in which the drive connection between the upper feed foot and the presser foot has a three-position control device for automatic adjustment of the height position of the upper feed system. This is preferably a hydraulic control device, whose hydraulic cylinder is subdivided by its adjusting piston into two chambers. A hydraulic difference measuring unit is provided wherein the two chambers 82a, 82b of the hydraulic cylinder 59 are connected via two antiparallel-connected pressure relief valves 71, 71'. Each pressure relief valve 71, 71' preferably consists of a spring-tensioned check valve R and a pressure-limiting valve D arranged downstream of it.

Abstract: A presser of a sewing machine including a body movable downward for pressing an elastic band to be sewed, a roller rotatably disposed in one end of the body, a member having one end pivotally supported on a middle portion of the body and having a tapered surface formed in the bottom of the other end, a spring and a bolt engaged through the middle portion of the member for biasing the tapered surface downward against the roller, the elastic band being resiliently grasped between the tapered surface and the roller so that the elastic band can be stretched.

Abstract: A presser of a sewing machine including a body movable downward for pressing a cloth which includes one side edge, a rod laterally extended from the body, a bolt rotatably supported on the rod, and a guide including a back extended downward from one side of the guide for guiding the side edge of the cloth and a frame having a screw hole for threaded engagement with the bolt, so that the guide can be caused to move along a longitudinal direction of the rod and so that the back can be adjusted relative to the body by rotation of the bolt.

Abstract: A presser foot for use in sewing an elongate ribbon-like material to a fabric sheet includes a sole and an adjustable ribbon/sequin guide assembly through which the ribbon-like material slidably passes. The ribbon/sequin guide assembly includes a tubular guide portion which slidably envelopes a portion of the ribbon-like material, and defines, in connection with the sole, a needle dropping gap through which the needle of a sewing machine penetrates the fabric to sew the ribbon-like material thereto. The ribbon/sequin guide assembly is laterally movable, as a unit, by the positioning of a nut on a threaded shank which is fixed relative to the sole. Extending upwardly from the tubular guide portion of the ribbon/sequin guide assembly is a U-shaped yoke which is slidably received onto the threaded shank. A nut, which is threaded onto the shank, is positioned within the yoke to move the ribbon/sequin guide assembly laterally as the nut is rotated about the shank.

Abstract: A self-guiding zig-zag satin stitch presser edge foot includes a sole to be pressed against a fabric to be sewn and a fabric guide for engaging an edge of the fabric. The fabric guide carriers a thread guide pin which lies adjacent to the edge of the fabric. The fabric guide and the thread guide pin are laterally movable, as a unit, by the positioning of a nut on a threaded shank which is fixed relative to the sole. Extending upwardly from the fabric guide is a U-shaped yoke which is slidably received onto the threaded shank. A nut, which is threaded onto the shank, is positioned within the yoke to move the fabric guide and the thread guide pin as the nut is rotated about the shank. The sole includes a channel formed on the underside thereof rearwardly of a needle dropping hole, having a sufficient depth to permit a thickened satin-stitch hem to pass therethrough.

Abstract: A presser foot retainer system for use in a sewing machine which utilizes a presser foot device including an elongated generally horizontal foot, a horizontal cross pin positioned above the foot and extending in a direction generally at right angles to the direction of elongation of the foot, and a connector connected both to the pin and the foot to support the pin in said position. A presser bar has a slot in the lower end of the bar which extends generally parallel to the pin. The pin is detachably engageable in the slot to detachably secure the device to the bar.

Abstract: Presser device in a sewing machine, comprising a support provided with structure for holding and releasing a presser foot. The support is of a general parallelepiped shape and has two parallel grooves that are arranged on two opposing lateral faces of the support, these grooves forming sliding guides for a sewing attachment. One face of the support comprises a translucent window, an electrical bulb being arranged in the support behind the window. The support also has at least one bore for receiving a rod for securing a sewing attachment. This bore is perpendicular to the axis of the presser bar. The support also has two parallel grooves arranged on its other two lateral faces.

Abstract: A thread end guide groove communicating with a needle location groove is defined in a cloth presser foot. A knife is secured to the rear surface of the cloth presser foot and extends across the thread end guide groove. A needle thread restriction plate is provided on the cloth presser foot and open at the side of a thread end holder. The needle thread restriction plate covers the upper surface of the thread end guide groove so that an inclined angle .theta.1 defined between an inclined portion of the needle thread restriction plate and a sewn material is set to be greater than an inclination angle .theta.2 defined between the extension thread and the sewn material.

Abstract: An embroidering device for a sewing machine includes an embroidering frame and a first driving member to be connected with the feed dog of the sewing machine for driving the embroidering frame in a direction transverse to lateral swinging and vertical reciprocating directions of a needle bar of the sewing machine. A second driving member is connected with the needle bar support for driving the embroidering frame in the lateral swinging direction of the needle bar.

Abstract: A sewing apparatus for use on a quilting machine having an intermittent tension mechanism and a hopping presser foot mechanism cooperating with eccentric cams located on the main drive shaft of the sewing apparatus.The intermittent tension mechanism includes an eccentric cam having an outer surface adapted to abut a cam follower which engages thread holding tension disks that are biased together by action of a spring. Pressure between the disks is increased during the final tightening of the stitch due to the reciprocating motion of the cam follower.The hopping presser foot mechanism includes a rocking bar pivotally connected at one end to a reciprocating arm and slidingly and pivotally connected at the other end to a presser foot bar. A ball and race mechanism pivotally connects the rocking bar with the reciprocating arm. The arm reciprocates due to action of the eccentric cam.

Abstract: Apparatus is provided for forming on a work piece a line of stitching substantially free from puckering by placing a stitch-engaging element of a width less than the length of a stitch to project across the line of stitching at the sewing position. The stitch-engaging element comprises a plurality of flexible filamentary elements arranged side by side in close juxtaposition and an endless row of stitching-engaging elements movable in a direction longitudinally of the row of stitch-engaging elements and positioned so that a portion of the row of stitching-engaging elements projects across the line of stitching at the sewing position. The flexible filamentary elements project radially from the periphery of a disc to form an endless row of stitch-engaging elements.

Abstract: A relatively long needle (22) is supported at the lower end of a needle bar (28). The needle bar (28) and needle (22) are moved up and down and forwardly and rearwardly. The needle bar (28) and needle (22) are moved forwardly while they are in materials (M) which are being sewed together, to in that manner advance the materials (M) stitch by stitch. The materials (M) are supported on a bed (10) which includes a slot (20) which is elongated in the direction of the stitch path. The needle (22) is received in the slot (22). A side boundary of the slot (20) provides a side guide surface (84) which is contiguous a first side of the needle (22). An upper thread (76) extends downwardly from a thread guide (110) into a side groove (86) in the first side of the needle (22), to and through a needle eye (80). A recess (82) is formed in the second side of the needle (22) above the needle eye (80). Following downward movement of the needle (22) through the materials (M), the needle (22) is moved upwardly.

Abstract: A device in a sewing machine for applying a variable downward force to a presser bar. A guide lever engages the presser bar and in turn is urged downward by the force of a spring. The bottom of the spring is held fixed to a lock sleeve on the guide lever. The top of the spring is fixed to a sleeve on a shaft which is disposed vertically inside the spring. The shaft passes freely out the bottom of the spring and through the guide lever without engaging either of these. The shaft and thereby the top of the spring are urged downward by a controllable pneumatic device in order to set the compression of the spring and thereby the downward force applied to the pressure bar by the guide lever. The pneumatic device preferably includes a pair of separately controlled pneumatic pistions arranged in series for moving the shaft to at least two predetermined positions.

Abstract: A presser foot for a sewing machine comprising a bifurcated foot having first and second limbs. the first limb is about twice as wide as the second limb. Selectively spaced indentations are provided on at least one of the limbs to facilitate accurate stitching. The indentations can be on the tops or the sides of the limbs.

Abstract: Disclosed is an electronic zigzag sewing machine adapted to produce one or more of buttonhole stitch patterns, including several parts to be sequentially stitched, in response to stitch control data stored in a memory unit. The sewing machine includes a vertically extending presser bar, to the lower end of which there is detachably mounted a presser foot for exerting a downwardly directing pressure onto a workpiece. The presser foot is provided with a photo-sensor capable of detecting a longitudinal end of a buttonhole during stitching operation of the buttonhole stitch pattern; a step-up timing, at which one part of the buttonhole stitch pattern proceeds to the next part, can be automatically detected so that the buttonhole stitch pattern can be produced step by step without necessity of manual operation.

Abstract: An apparatus for eliminating curls at the cut ends of fabric workpieces provides air tubes directed toward the curls so that air flow flattens the curls. The apparatus includes a device for generating air flow; a first tube connected to the device for generating air flow and having one end fixed to the presser foot of a sewing machine; a second tube connected to the device for generating air flow and having one end situated under the throat plate of a sewing machine; and a valve positioned between the device for generating air flow and the tubes. The first tube includes an opening facing the curls and a contact portion extending horizontally and overlapping the curled edge of the workpiece for contacting the curled edge when the presser foot is moved downwardly. The second tube includes an opening facing the curls. The pattern of air flow is switchable to one or both of the tubes depending on the configuration of the curls; that is, whether the fabric is outwardly curled or inwardly curled.

Abstract: This invention relates to an automatic sewing machine exclusively used for sewing a zipper on a workpiece and its related art. The automatic sewing machine exclusively used for sewing a zipper on a workpiece comprises a sewing machine (10, 20) capable of at least sewing linearly, a drive device movable in two axes right angles to each other in a plane vertical to the movement direction of the needle (11, 21) of the sewing machine and a zipper setting device (12, 22) attached to said drive device for gripping said zipper (3) and workpiece (1) in a predetermined relationship.

Abstract: The bottom plate of a cloth presser supporter is pivotally mounted on a lower end of the supporter adjacent a rear end of the plate. The plate has an L shaped slot, one slot leg being a needle location groove, the other slot leg being a needle thread guide. The plate has a knife receiving groove with a knife mounted therein. A thread holder holds the end of a thread vertically above the plate so that the thread when extended between the held thread end and the first zigzag stitch of the thread does not extend over a corner defined by the intersection of the side wall of one slot leg with the corresponding side wall of the other slot leg.

Abstract: Sewing machine for sewing a rubber strip to a tubular end piece of a garment made from an elastic textile material in order to produce an endless elastic band. The sewing machine comprises a presser foot (18) with an insertion opening (22) for the rubber strip (24), a braking device (48) to resist the insertion movement of the rubber strip and provided with two clamping elements (50, 52) which grip the strip, and a cutting system (26) which can be motor driven in order to cut the rubber strip. To eliminate the reintroduction process of the strip (24) into the insertion opening (22) of the presser foot (18) after said cutting, the cutting system (26) is arranged rear from the insertion opening (22) of and in the presser foot (18), and a drive (56) is associated with the braking device (48) to increase the gap between the two clamping element (50, 52) just before actuation of the cutting system (26).

Abstract: A sewing machine having a presser bar and a needle bar and each having a force transducer mounted thereon for simultaneously detecting changes in load applied to the presser bar and needle bar. The force transducers are connected to a circuit including a computer for monitoring the fabric feeding and stitch formation forces encountered by the presser bar and the needle bar during sewing and analyzing the simultaneous force signal data from the force transducers on the needle bar and the presser bar of the sewing machine.

Abstract: The invention herein described comprises a programmable microprocessor control unit 2 controlling a plurality of actuators 6, 7, 8, 9, 10, respectively associated with the differential feed dog, main feed dog and upper feed dog and/or with the presser foot and the tension group of an industrial sewing machine 5. On the basis of the adjustment parameters keyed-in in said control unit, each actuator individually causes the adjustment of the movements of each feed dog, of the pressure exerted by the presser foot and of the force causing the dish-shaped elements of the tension group to be moved close to each other to retain the threads interposed therebetween.

Abstract: In a sewing machine provided with a needle position adjusting device to position a needle relative to a basic line, a switching arrangement is provided to switch the needle position adjusting means from a needle amplitude adjusting mode to a mode of adjusting the needle basic line, whereby one adjusting device may be used as a needle amplitude adjusting device for ordinary stitching patterns and as a needle basic line-adjusting device for specific stitching patterns.

Abstract: A presser foot that is adapted to extend forwardly upon attachment to a presser bar of a sewing machine that sews a fabric pressed under the presser foot includes a presser foot element that is pivotably attached to the presser bar and is biased pivotally with respect thereto by a spring, the element having a vertical slot with an open forward end and a rear end that is closed at a vertical needle-accommodating through aperture located ahead of a pivotal axis about which the presser foot pivots about the presser bar. The presser foot is formed with two recesses, one on each side of the forwardly open slot, each recess being longitudinally defined by outwardly extending flanges at each end, and a first pair of rolling elements that are rotatably supported coaxially by the presser foot element, one inside each of the two recesses about a common first axis that is disposed beneath the needle accommodating aperture, so that the rolling elements press on a fabric being sewn thereunder by the needle.

Abstract: A workpiece detector for a sewing machine including a rotatable detecting lever in which small angular displacements at the end of the detecting lever, caused by differences in workpiece thickness, are multiplied mechanically causing the rotation of an electrical converter. Detectable output signals are generated such that overlapping of workpieces or the end of a workpiece may be detected during stitching. The length of the detecting lever is adjustable such that the detecting point may be varied.

Abstract: A presser foot for a sewing machine comprises a base section (1) through which are formed a needle hole (2) and a trimming knife slot (3) spaced away from the needle hole. A support (4) projects upwardly from the base section, and can be attached to a sewing machine. The lower surface of the base section is formed with a groove (7) extending from a leading edge of the base section between the needle hole and the trimming knife slot and parallel to that slot. A fulling rod (16) lies at least partially within the groove and extends along the groove from the leading section thereof to a point beyond the location of the trimming knife, the fulling rod being secured to the base section in such a way that unobstructed free space is left between the fulling rod and the wall of the groove. The arrangement allows automatic formation of a stepped-back edge between two stitched-together garment sections.

Abstract: An apparatus for stitching material in a sewing machine having a throat plate having a stitch tongue, a stitch forming instrumentality for forming an overedge stitch having a needle, an upper looper, and a lower looper. The apparatus has first plates for applying tension to a first thread passing to the upper looper, second plates for applying tension to a second thread passing to the needle, third plates for applying tension to a third thread passing to the lower looper, fourth plates for selectively applying tension to the first thread, fifth plates for selectively applying tension to the second thread, and sixth plates for selectively applying tension to the third thread.

Abstract: A presser foot assembly for use with a workpiece support in a sewing machine having a sole plate, a body for supporting the sole plate in a position for pressing material to be sewn onto a workpiece support, and a lead-in sole part. The assembly has a pin for pivotally connecting the lead-in sole part to the sole plate, and a spring for moving the lead-in sole part between a first position adjacent the workpiece support and a second position spaced from the workpiece support.

Abstract: A sewing machine presser foot lubrication system which includes apparatus to directly supply a lubricating fluid to the underside of a presser foot. The apparatus includes a small lubricant flow tube attached to a forwardmost underside portion of the presser foot. By such direct attachment of the lubricant flow line to the presser foot, a more effective lubricating function between the presser foot and a work piece is achieved. The apparatus further consists of a lubricant reservoir and the appropriate valving to control the lubricant flow rate therefrom. The flow tube is in two sections wherein a flexible second portion can be quickly disconnected from a rigid first portion which is integral with the presser foot.

Abstract: A mock-linking apparatus is disclosed for linking a specially knitted edging trim in the form of a ribbon of knitted yarn with an unfinished edge of a knitted garment, such as a V-neck opening, to obtain a finish which substantially simulates a point-to-point link finish. The trim is weft-knitted on a double bed knitting machine to incorporate a course of transfer stitches followed by a slack tension course which defines a fold line to facilitate tucking-in of the ravel edge, and an adjacent seam line along the folded edge, wherein the seam line is well-defined by a line of outwardly-protruding loops with spaces therebetween. A conventional chain-stitch sewing machine is used, provided with folding means and guide means to bring the seam line of the trim, which has been folded over the unfinished garment edge, into alignment with the needle path, wherein the two pieces of knitted fabric are joined along the seam line with matching thread.

Abstract: A sewing machine with adjustable upper and lower feed dogs is for sewing together sections of clothing in which ungathered segments of seams alternate with seam segments with differing degrees of gather. The spring-held presser foot is coordinated with a pneumatic cylinder as an additional mechanism of increasing contact pressure during the sewing of ungathered segments of seams. The cylinder is operable by a control cam connected to an adjusting mechanism for a stitch guide of one of the feed dogs. When sewing gathered segments, the pressure of the presser foot is greatly reduced, whereas the pressure is increased during the sewing of gathered seam segments and through a "fastening" step at the end of the seam.

Abstract: In the process for mounting a slide fastener segment or slide fastener near the opposing edges of two pieces of material, particularly on a slit in a piece of clothing, a slide fastener strip, the slide fastener segment or the slide fastener and the pieces of material are fed to the sewing stations of a two needle sewing machine. The pieces of material in the region between the sewing stations are positioned to form a gap and are curved so that a portion of each hangs substantially vertically from two fold edges or creases in an intervening space between both of the sewing stations. Both slide fastener halves of the open slide fastener segment or the open slide fastener are sewn on from above on the horizontal portion of the pieces of the material along the fold edges. Apparatuses for performing the process according to my invention are also described.

Abstract: A presser foot control for a sewing machine comprises a solenoid and two springs having different spring constants arranged in series with a transmitting lever and a starting lever. A first weaker spring is set in a "previously-pulled" condition and is connected in series with a second, stronger spring. The solenoid force first pulls on the stronger, unloaded spring. Thereafter, the weaker spring, which has been pulled previously into a loaded condition, is pulled and presses the presser foot causing the workpiece to be pressed against the table. Despite variations of thickness in a workpiece, the invention is effective to clamp the workpiece with a substantially constant pressure value.

Abstract: A presser foot comprising, a hub having a hollow guide, a plunger having a guide member slidably received in the guide, and a lower portion carrying a sole, with the guide member being biased outwardly in the guide. The presser foot has a guide part secured to the hub guide and having a lower leg directed toward the plunger. The leg and plunger cooperate to prevent rotation of the plunger.

Abstract: The present invention provides an apparatus for manufacturing an embroidered carpet. This apparatus is such that pile yarn is dipped into a substrate cloth with a hook device to form a surface of the carpet which comprises means for driving said hook device along a memorized pattern so as to efficiently manufacture an embroidered carpet with a varigated design which has heretofore been manufactured only manually.

Abstract: A sewing machine having a reciprocating needle bar and a presser foor which is movable upwardly and downwardly to engage material and move it over a sewing station includes a presser foot measuring device. A system for measuring the pressing force of the presser foot of sewing machines comprises a lever type force absorption element which is elastically deformable by the pressing force of the presser foot and which is provided with an electric sensor responding to the deformation. Connected with the sensor is a circuit which contains a digital display on which the pressing force is indicated in newtons.

Abstract: A thread chain sewing apparatus for use in overedge sewing machines has a thread chain catcher with a cutter for cutting a thread chain formed to extend from an end of a fabric and suctionally engaged against a suction opening. A presser foot having a guide groove for insertion of the thread chain is movable up and down, and a thread chain carrier is aligned with the thread chain catcher and has a suction nozzle for suctionally receiving the cut-off thread chain to carry it over the presser foot. An air blow tube running under the throat plate can be provided, an aperture thereof blowing the chain toward the suction opening. A thread chain presser mechanism has a holding plate movable up and down over the presser foot for pressing the thread chain into the guide groove of the presser foot.

Abstract: A low inertia presser bar carries a retaining plate which slidably extends through an enlarged slot in a hollow main presser bar that slidably receives the main presser bar. The lowered position of the main presser bar may be adjusted to position the clearance between the slot and retaining plate above the plate, or with a selected portion of this clearance below the plate for adjustable travel of the low inertia presser bar before initiating motion of the main presser bar.

Abstract: A fabric slipper upper is stitched on a stitching machine along the inner surface of a peripheral flange of an outsole by the provision of an upper feed only and a nosepiece having a blunted end and smooth sides and ends but with no lower feed.

Abstract: A presser foot used in combination with a zigzag sewing machine, which is especially adapted to produce a combination stitch comprising a first half series of stitches and a second half series of stitches formed in the normal feeding direction. The presser foot is provided on the bottom at one side thereof with a recess in the feeding direction for preventing the precedingly formed first half series of stitches from contacting the bottom of the presser foot while the second half series of stitches are being formed.

Abstract: A device for guiding a concealed slide fastener to a sewing machine includes a pair of spaced track bodies mounted on a slanted guide plate and each comprising a block fixedly mounted on the guide plate and a cover member movably mounted on said block. The block and the cover member jointly define a guide channel for guiding an element assembly of the slide fastener therethrough while the slide fastener is fed down the guide plate toward a sewing position on the sewing machine. The guide channel includes a recess for accommodating coupling heads of the element assembly at an inlet end thereof, the recess being shaped for automatically erecting the element assembly from a horizontal position to a vertical position as the element assembly is moved progressively through the guide channel. The guide plate supports a means for sensing an end of the concealed slide fastener.

Abstract: A presser foot and throat plate construction is disclosed for minimizing work feed drift in a sewing machine having a four-motion drop feed mechanism. By providing aligned and complemental ribs and recesses, one beneath the presser foot and the other in the throat plate, turning movement of the work fabric, which contributes to feed drift, is minimized and stitch forming characteristics of the sewing machine are enhanced.

Abstract: A material presser device on a sewing machine, includes a presser foot which is attached to a vertically movable presser bar and to which lift movements are imparted by a swing mechanism driven by the main shaft acting through a knee-joint transmission which, in its extended position, extends substantially in the movement direction of the presser bar. For positive connection of the presser foot with the swing mechanism, the presser bar is articulated via an intermediate pitman to one end of the connecting rod of a four-joint transmission. The other end of the four-joint transmission is connected by a connecting rod with an abutment which applies under the action of a spring, against a counter abutment secured to the housing. The connecting rod is connected to the knee joint transmission, the knee joint of which is connected to the sewing machine.

Abstract: In a sewing machine for performing twin overedging and seaming in one high-speed operation, specially designed top and bottom variable feed dogs pull the two plies through a three needle stitching area with improved, simplified elements for diverting one ply edge while the other is being overcast. The upright overcast edge of the top ply passes through a tunnel formed through the top feed dog. A guide wall attached to the throat plate guides the top edge away from the bottom overedging station. A guard wall can be attached to the presser foot to keep the turned-up top edge away from the seaming needle. A fiber optic/pneumatic system controls automatic stop, presser foot/top feed retraction and between-work thread cutter functions. Alternative front edge guides facilitate feeding the two plies in registration.

Abstract: A hand stitching presser foot, for a zigzag sewing machine having a fabric feed direction and a presser foot holder, for forming a hem on a fabric, the presser foot consisting of a fabric presser member pivotally mounted to the presser foot holder and having one end, an elastic fabric presser portion and a cutout having an open edge extending in the fabric feed direction, the cutout forming a needle drop hole on an edge of the cutout opposite from the open edge, a fabric guide member disposed a distance from the presser foot holder, fixed to the fabric presser member at one end and adjacent to the open edge, the fabric guide member forming a fabric guide portion having a vertical face disposed substantially along the fabric feed direction for guiding the fabric in the fabric feed direction, and a thread guide member having a thread guide portion fixed to the fabric guide member and arranged so as to extend across the cutout in the region of the open edge, the elastic fabric presser portion being located betwe

Abstract: A method of manufacturing pantyhose by means of sewing machine using hose shaped leg parts comprises arranging the leg parts in a flattened side by side longitudinal relationship, cutting each leg part along an edge from the waist rim of its panty area up to a crotch leaving a remaining leg portion of each leg uncut so as to form upper and lower plies of each leg cut along their inner opposite edges, sewing the cut edges of the laterally adjacent plies together from the waist rim to the crotch to form a seam, deflecting the outer plies outwardly to overlie the remaining leg portions and continuing to sew the seam by sewing in the same direction the edge portions of the upper plies together. A sewing machine carrying out the invention includes a presser foot having a sole with a toe shaped front part which engages into each leg portion of the pantyhose to be formed.

Abstract: A stitching assembly for a sewing machine has a stationary stitch plate having a flat upper face defining a stitching location, provided on the face adjacent the stitching location with an upstanding edge guide extending in and defining a transport direction, and formed with an upwardly open elongated groove extending upstream in the transport direction from the stitching location and having an outer flank turned toward and mainly parallel to the edge guide and an inner flank turned away from and mainly parallel to the edge guide. A presser foot has a sole plate with a lower face turned toward and confronting the upper face of the stitch plate at the stitching location and provided on its lower face with a downwardly projecting guide ridge that extends in the transport direction and that has an inner flank turned toward and generally parallel to the edge guide and an outer flank turned away from and generally parallel to the edge guide.

Abstract: A presser foot device on a sewing machine has a swingingly driven foot which can be shifted by two compressed air cylinders and piston combination and a spring mechanism into an inoperative position and, for adaptation to different work thicknesses, into a plurality of operating ranges, each with a different height position but constant amplitude of oscillation.

Abstract: A presser foot with a grooved sole plate for use in the formation of buttonholes on a sewing machine is pivotally mounted on a screw with which the foot can be moved laterally relative to the shank to position a groove dividing ridge with respect to a sewing needle.