Abstract: A sewing machine includes a sewing machine head, a sewing machine bed, a catching member, a cutwork device including a cutting needle having a blade, a cutting needle up-down movement mechanism moving the cutting needle up and down, and a switching mechanism configured to switch the catching member between a working position where the catching member is disposed at the cutting position at the side of the upper surface of the workpiece cloth and a retreat position retreated upward from the working position. The cutwork device is configured to form a cut in the workpiece cloth by the cutting needle at a cutting position from below the workpiece cloth. The switching mechanism is configured to switch a position of the catching member by the movement of the presser bar by the presser mechanism.
Abstract: A cutting device for a sewing machine includes an upper-blade positioning device and a lower-blade positioning device. The upper-blade positioning device includes an upper blade upper blade fixed at a head portion of the upper-blade holder, and a spring and a restricting member sleeved on a body portion of the upper-blade holder. A restricting pin is engaged between an upper-blade drive member and the restricting member. A guide member includes a guide hole for insertion of a rod portion of the upper-blade drive member and is fixed to the base. The upper-blade drive member is inserted through a guide member of the base and moved by a connecting rod. The lower-blade positioning device includes a lower-blade holder, an adjustment member. A lower-blade shaft has one end fixed to the base and another end extended out of the base, rotating the adjustment member can adjust the position of the lower-blade holder.
Abstract: An overlock sewing machine includes an upper knife which is movable to a withdrawn position or a driving position, an upper knife driving unit which moves the upper knife, an interlocking switching unit which switches between an interlocking state in which the upper knife driving unit and the upper knife are interlock and a release state in which the upper knife driving unit and the upper knife are released, an upper knife position switching unit which switches the upper knife to the driving position or the withdrawn position, and an operating unit which drives the interlocking switching unit and the upper knife position switching unit such that the interlocking switching unit is brought into the interlocking state when the upper knife is switched to the driving position, and the interlocking switching unit is brought into the release state when the upper knife is switched to the withdrawn position.
Abstract: A template and a method guide a cutting tool during cutting of a quilt block having a selected one of at least two alternate kaleidoscope patterns from a quilting blank having a given pattern of sections seamed together along seam lines intersecting at a common seam origin. The template provides right angle corners and obtuse angle corners for accommodating the alternate kaleidoscope patterns, and includes cutting guides and registration indicators which when registered with seam lines of the quilting blank locate one or more of the cutting guides for cutting one or more segments of the border of a selected kaleidoscope pattern. Indexing of the template and the quilting blank relative to one another relocates the cutting guides for cutting further segments of the border to complete the selected kaleidoscope pattern.
Abstract: An electronic device includes a battery-pack installing portion that holds a battery pack in a detachable manner; sensing means for sensing that a battery pack is installed in the battery-pack installing portion; detecting means for detecting data related with a state of the installed battery pack sensed by the sensing means; determining means for determining whether the battery pack has a fault based on the detected data; and first restricting means for restricting a recharging operation of the battery pack if the battery pack is determined to have the fault by the determining means.
Abstract: A cutting apparatus has a main body with a hook section, a fixed blade fixed to a predetermined position of the main body, a cutting blade that cuts a sewing material by moving toward the fixed blade, and a drive device that moves the main body between a predetermined retracted position that does not interfere with the sewing operation and a predetermined cutting position for cutting the sewing material. During sewing of the sewing material, the main body is held at the retracted position. To cut the sewing material, the drive device moves the main body from the retracted position to the cutting position, where the hook section hooks the sewing material, and the cutting blade moves toward the fixed blade in response to driving operation of the drive device. The cutting apparatus is disposed a predetermined distance away from the sewing position.
Abstract: A darning width adjusting device for a sewing machine includes a lower knife holder supported by a sewing machine frame such that a moving position of the lower knife holder is adjustable in a direction orthogonal to a cloth feeding direction, a thread-sliding piece which sets a darning width by picking up a thread at a tip thereof in the vicinity of a stitch point, a thread-sliding piece holder supported by the sewing machine frame such that a moving position of the thread-sliding piece is adjustable in the orthogonal direction to the cloth feeding direction, a thread-sliding piece adjusting means for adjusting the moving position of the thread-sliding piece, and a lower knife holder adjusting means for adjusting the moving position of the lower knife holder to a position exceeding a outside marginal position of the thread-sliding piece.
Abstract: Disclosed is a sewing machine with work edge cutting mechanism having an upper blade 13a which is operated to cut the work edge in cooperation with a lower blade 1a during stitching operation, the upper blade being stopped and retreated to an inoperative position below the needle plate 30 in case the stitching operation is performed without necessity of cutting the work edge, the sewing machine substantially comprising a main drive shaft 2 which is rotated to vertically reciprocate a machine needle 31, a device for converting the rotation of the main drive shaft into vertical movement, a device for transmitting the vertical movement to the upper blade, a device for intercepting the transmission movement of the transmitting means, wherein the intercepting device is operated to cause the upper blade to retreat from the operative position to the inoperative position below the needle plate.
Abstract: A sewing machine includes a main frame provided with a drive shaft, and a cutting mechanism mounted on the main frame and driven by the drive shaft. The cutting mechanism includes a driving device, a first retaining device, and a second retaining device. Thus, the cutting mechanism is operated rigidly and stably, thereby facilitating the user operating the sewing machine.
Abstract: A cloth cutting and border applying machine for manufacturing mattresses starting from a roll wound sheet, comprising a framework, a cloth moving device, two sewing machines arranged upstream of the moving device to form longitudinal stitch lines for stitching a strip supported on a roll support along lateral edges of the cloth, a cloth finishing assembly arranged downstream of the moving device and having a sewing machine with at least two needles for providing parallel transverse stitch lines and mounted on a carriage slideable on guides to join a band to the cloth along transverse stitch lines, a cutter for cutting between the parallel stitch lines to separate a cloth portion lying downstream of the assembly from one lying upstream, a carriage actuator, and a band cutter to cut the band and the cloth transversely between the two stitch lines.
Abstract: An operational knife is attached at one end of a knife shaft and repeatedly projects from the front portion of a needle plate, thereby it trims a fabric with a stationary knife. A transmitting lever is loosely fit on the knife shaft halfway in the shaft direction. A transmitting ring is fit close to the transmitting lever so as to be movable in the axial direction. Components of a clutch are respectively formed on both opposing faces of the transmitting ring and transmitting lever so that the clutch is engaged/disengaged as the transmitting ring touches or separate from the transmitting lever. The transmitting lever is connected via a link member to a oscillating shaft which oscillates on its axis driven by a rotating machine spindle. The oscillation is transmitted to the knife shaft via the transmitting ring thereby operates the operational knife only when the clutch is engaged.
Abstract: An overlock sewing machine has a movable cutter which is activated in association with rotation of a main drive shaft to cooperate with a fixed cutter provided in the same plane with an upper surface of a needle plate, to thereby cut a work while the work is being stitched. A link mechanism includes a drive link having one end rotatably connected to a mount and the other end is connected to the movable cutter and a swingable link having an arcuate guide groove extending between one end and a center axis thereof around which the swingable link is swingingly moved. The drive link has a point between opposite ends thereof operatively connected to the arcuate guide groove of the swingable link. An operating device includes an operating shaft which is operatively connected to the point of the drive shaft so that the point of the drive link may be substantially moved along the arcuate guide groove of the swingable link between said one end and center axis thereof by manipulation of an operating knob.
Abstract: In the case of a sewing machine having a cutting means for the purpose of cutting a workpiece edge a disengaging means is provided by means of which an upper cutter is moved out of a working position in which it moves in a reciprocating manner--in dependence upon the rotational movement of a drive shaft--into an inoperative position. In so doing a lower cutter is covered.
Abstract: A device for aligning a garment for a sewing machine provided with a device for moving the garment towards the sewing machine, and a device for aligning the garment to a lateral window along the moving device to obtain precision in alignment of the garment.
February 26, 1993
Date of Patent:
May 16, 1995
Union Special Corporation
Maximilian Adamski, Jr., Gary J. Michal, Robert G. Tegel
Abstract: A device for sewing together two plies of cloth with a lap seam. The device comprises a cloth guide that is disposed between a plurality of reciprocating needles and the front of a cutting knife. The guiding portion of the cloth guide extends substantially between the needles and the front edge of the cutting knife. A cloth guide for assuring a full lap of material when sewing a lap seam where the left ply is to be laid on top of the right ply is also provided.
Abstract: A knife drive mechanism of a sewing machine includes a drive assembly 1 for converting rotary motion of a drive shaft 10 into a swing motion and an upper-knife drive assembly 2 for converting the swing motion into an up-and-down motion of an upper knife 20. The upper-knife drive assembly 2 has a clutch 3 for preventing/permitting transmission of the up-and-down motion to the knife 20. Even during stitching, engagement/disengagement of the clutch 3 can be effected, which permits the knife 20 to be connected to and disconnected from its drive assembly, thereby permitting the scissoring cutting to be started or stopped. When a surface 42 of the first swing member 4 urges a projection 52 of a second swing member 5 to cause the knife 20 to move downward at the completion of cutting, the knife 20 itself serves as a cloth-feed guide to prevent misalignment of the cloth and breakage of the sewing needle or upper and lower loopers.
Abstract: An apparatus is disclosed for automatically serging a trouser-fly piece initially along an arcuate line of stitching extending across its leading end while tracing and trimming that arcuate line in advance of serging and thereafter continuing to serge along a straight line of stitching extending parallel to one longitudinal substantially straight side edge of the trouser-fly piece. The apparatus incorporates control means including a control counter and a delay counter both operatively associated with the operation of a sewing needle so as to ensure serging of the trouser-fly piece over its full length with accurate and uniform finishing.
Abstract: An improved method of serging a trouser-fly piece on a serging machine having a trimming cutter is disclosed wherein a continuous trouser-fly blank assembly is fed intermittently into a first feed path extending toward the serging unit at a predetermined angle relative to a path of movement of the trouser-fly piece being advanced by the serging unit. Then the continuous trouser-fly blank assembly is cut into a succession of elongate rectangular trouser-fly pieces each of which is subsequently advanced toward the serging unit along the first feed path. Thereafter, at least a corner of a leading end of the trouser-fly piece is trimmed by the trimming cutter and, substantially at the same time, one curved longitudinal edge of the trouser-fly piece including the trimmed corner is serged with a serge stitching.
Abstract: Sheet material 30 is taken from a supply 32 and is cut by cutter 36 into segments 35. The segments are moved rapidly parallel to their cut edges into a slower operating first sewing station 40 where elastic bands are sewn to the side edges of the segments. The rapidly moving trailing portion of the segment 35 of sheet material is temporarily accumulated at the accumulation station 39 and progressively fed at a slower rate through the first sewing station 40. The side edges are folded into overlying relationship with respect to the main body portion at folding station 42. Sewing machines 64 and 165 are moved inwardly of the sewing path to simultaneously cut and sew diagonal corners at the trailing and leading edges of the segments, with the sewing machines pivoting so as to face the relative movement of the sheet material, and the removed corners 25 and elastic banding 21 are pulled away from the work product by a vacuum system 186.
Abstract: A taped chaining thread sewing device is designed to sew by operation of an overedge sewing machine a tape into the upper surface of the fabric sent into the needle location of the sewing machine, and also sew the chaining thread cut off from the preceding fabric into the lower surface of the fabric. The tape is cut off together with the unnecessary edge portion of the fabric by a cutter at the start of sewing of the leading end from the sewing part on the fabric. Before the final end of the fabric passes the cutter, a tape guide of the taped chaining thread sewing device moves, and therefore the unsewn portion of the tape is cut off together with the unnecessary edge portion of the fabric from the sewn part by the cutter. By the chaining thread sewn into the beginning part of sewing of the fabric, it is not necessary to perform any particular bar tacking job at the beginning of sewing in a separate process.
Abstract: A sewing method and apparatus is disclosed for preventing raveling of a cut cloth edge in the making of garments such as slacks and skirts. A pair of sewing machines symmetrically arranged with respect to a cloth feeding line are disposed oppositely to each other. Each sewing machine has an auxiliary guide for contacting the upper surface of a cloth, a cloth edge guide and a cloth stopper. Opposite edges of the cloth are simultaneously and automatically guided along respective sewing lines by the guides and serged by the sewing machines without failure. In operating the pair of sewing machines, another additional sewing machine can be operated to serge other edges of the next cloth.
Abstract: A trouser-fly piece serging apparatus includes a guide unit disposed upstream of a serging station and composed of a first elongate guide member extending at an angle relative to the path of movement of a trouser-fly piece being advanced by a serging unit, and a second elongate guide member extending parallel to the path of movement of the trouser-fly piece. The trouser-fly piece is guided by the first guide member into the serging station so that a trimming cutter disposed immediately upstream of the serging unit assumes a position to conform to a curvature of the leading end of a substantially arcuate trimming line passing across a corner of the leading end of the trouser-fly piece. Synchronous operation of the serging unit and the trimming cutter causes the trouser-fly piece to turn in one direction during which an arcuate corner which is trimmed by the trimming cutter and subsequently serged by the serging unit is automatically produced on the leading end of the trouser-fly piece.
September 7, 1990
Date of Patent:
December 3, 1991
Yoshida Kogyo K. K.
Kiichirou Ishikawa, Yasuhiro Fukumoto, Chet Dudek
Abstract: A sewing machine includes a presser foot 9 provided, at the front portion 9a thereof, with an engagement seat 21 through which two ribbon-like pieces of trimmings 15, 16 of different width to be individually and selectively fed to the presser foot, can be sent under a central portion 9b of the latter so that they are engaged by the line of sewing together with the workpiece. An adjustment element 23 is positioned in said engagement seat in order to define the useful width of the seat depending upon the width of the piece of trimmings to be used. A cutting unit 31 is slidably mounted along a guide element 34 and is movable from a rest position in which it is spaced apart sideways from the sewing machine supporting table 3 to a rest position in which it is located close to the supporting table to cut the piece of trimmings previously used.
Abstract: A control device for trimming knives on flat-bed sewing machines comprises a rocking lever 19 fulcrumed on a fixed pivot 20 and receiving an oscillatory motion from a connecting rod 18. The rocking lever operates a movable knife 14 through a drive group 21 provided with a movable pivot 29 slidably engaged in an elongate shaped opening 30 associated with the the rocking lever. A disengagement group 40 enables the movable pivot 29 to be brought from an engagement position in which it is in engagement with an engagement portion 30b of the elongate shaped opening 30 to operate the movable knife 14, to a disengagement position in which the movable pivot slides within a curvilinear portion 30a of the elongate opening in order to deactivate the movable knife 14. The displacements of the movable pivot 29 take place upon command of a disengagement lever 32 slidably engaging said pivot in the region of an elongate guide opening 32a.
Abstract: A sewing machine has a trimmer and a waste container for trimmed waste fed to it through a guide groove. The waste container that needs little space and also enlarges the workpiece support surface for the sewing material is designed and arranged so that the trimmed waste reaches it over short transport paths. For this purpose, a portion of the sewing machine includes the waste container located beside the trimmer and reaching directly to it, whose top is aligned with a base top plate covering the rest of the base of the sewing machine and together with it forms a support surface for the sewing material.
Abstract: An apparatus is provided for automatically fabricating textile articles, such as bath throw rugs and the like. This apparatus includes devices for intermittently feeding continuous textile material suitable for fabricating the articles from a supply position to a cutting position in the apparatus. Devices successively cut slightly oversized textile articles from the continuous textile material in the cutting position. A robot mechanism successively picks-up and transports each cut article from the cutting position to an edge finishing position in the apparatus, rotates the cut articles in a predetermined pattern during edge finishing thereof and then transports the fabricated textile article to a stacking position and releases the fabricating textile article.
December 1, 1986
Date of Patent:
August 25, 1987
Collins & Aikman Corporation
Lawrence C. Moore, Freddy M. Hibdon, James M. Howell, James E. Blalock
Abstract: Cloth stitching apparatus and method for forming a rectangular cloth having stitched rounded corners, such as a wash cloth. Blank pieces of rectangular cloth material are aligned with an overlock sewing machine on the table of the apparatus. The sewing machine trims the cloth edges, folds over the trimmed edge and sews or stitches along one side of the cloth. Each piece of cloth is moved along X and Y axis. Thus, as the cloth is moving along an X axis at a predetermined surface speed, the sewing machine trims, and sews along one side of the cloth. When the cloth is moved along its X axis to a point where the sewing machine is adjacent a corner of the cloth, a switch is activated which starts turning the sewing machine. The cloth stops while the sewing machine turns at the same surface speed of the cloth on the actual radius of the corner of the cloth. The cloth then starts and goes in the opposite perpendicular direction Y while the sewing machine continues at the same surface speed.
Abstract: A sewing machine includes a main shaft driving a sewing needle to reciprocate it through the material to be sewn which is fed over a needle slide of a stitch plate. The main shaft also drives a trimming knife drive which drives a reciprocating knife which cooperates with a counter blade adjacent the stitch plate for trimming the material. The trimming knife drive includes an eccentric driven by the main shaft and operating a knife operating linkage connected to reciprocate the knife. An eccentric rod is driven by the eccentric and it drives a swing lever through a guide rod which is pivoted thereto. The swing lever in turn drives the knife through a linkage connected between it and the knife and selectively moves it upwardly and downwardly for stopping its motion in either an upward or downward position.
Abstract: Two workpiece plies, placed on one another, of which the lower one is larger in width than the upper one, are to be sewn together with their edge contours aligned with each other. The device used for this purpose comprises a cutting mechanism provided ahead of the sewing machine in a workpiece feed direction, and following the contour of the upper work ply by means of guide unit for sensing this contour, so that the projecting portion of the work ply is cut off. To prevent the work plies from mutual displacement during their feeding toward the sewing machine, they are secured to each other by spot sealing at some locations wherefor a sealing tape is introduced between the plies.
Abstract: A workpiece trimming device for sewing machines having a fixed blade mounted in one side of the machine's presser foot and a movable blade operatively associated with the underside of the fixed blade reciprocally driven within a passage formed on the opposite side of the presser foot in alignment with the fixed blade. A first biasing force acting on the presser bar continually urges the presser foot in the direction of the needle plate and a second biasing force acting in the opposite direction of the first maintains contact between the fixed and movable blades. The first and second biasing forces acting in opposite directions provides an improved means for controlling the intended functions of the presser foot and cooperating trimming blades.
Abstract: A trimming device for sewing machines to trim the marginal edge of work fabric by a cooperation of a stationary blade fixed to the end of a projection arm, and a movable blade fixed to a drive arm positioned above the stationary blade. Between the projection arm and the stationary blade, is a gap for permitting the movable blade to move thereinto. The free end of a resilient plate, which is fixed at its base end portion to the projection arm, normally is substantially in the same horizontal plane as the end of the cutting edge of the stationary blade so as to cover and close the gap. The resilient plate is adapted to be contacted by the movable blade as the latter is lowered to be resiliently deflected into the gap and resume its original position as the movable plate is returned upward, thereby preventing the trimmings from coming into the gap.
Abstract: An overedge sewing machine having a reciprocating trimmer knife is used to sew elastic tape to a fabric. The elastic tape is fed through a tape guide which is movable from a rest position in which it guides the tape toward the stitch-forming mechanism of the sewing machine in the direction of material movement, to a second position in which it guides the tape to a position to be cut off by the trimmer knife. The tape guide includes a controllable tension which is located close to the stitch-forming mechanism when the tape guide is in its rest position to effect instant control of gathering. The tape guide is controlled by a knee shift which is movable from a rest position, through a "gathering" position, to a "cut-off" position. A stop mechanism requires the application of significant additional pressure on the knee shift to move it from the "gathering" position to the "cut-off" position.
Abstract: Disclosed is a sewing machine attachment which is adapted to be detachably attached, after opening a part of a machine bed, to the portion of the machine bed in the vicinity of the opened part, and to be operatively connected to a motion mechanism in the machine bed through the opened part of the machine bed. The attachment actuating mechanism includes a connection arm which is adapted to extend through the opened part of the machine bed into engagement with the motion mechanism in the machine bed, when a lock lever is moved to a position for locking the attachment to the machine bed. The connection arm is further adapted to be disengaged from the motion mechanism in the machine bed, as the lock lever is moved back to a position for releasing the attachment from the machine bed.
Abstract: The present invention relates to an apparatus which removes from the stitching area of a sewing machine a continuous strip of material which has been severed from the marginal edge of a workpiece being sewn. The apparatus includes a tubular member having an inlet end positioned above the work support and in front of the material severing mechanism of the machine. The other end of the tube is connected to a source of reduced pressure whereby creating a suction at the inlet end of the tubular member for drawing the continuous severed strip away from the material trimming mechanism and the stitching area.
Abstract: An abutment associated with the bed of a sewing machine cooperates with a work holder to guide the work during a sewing operation, and a trimming blade operates in conjunction with the abutment to simultaneously trim the work adjacent to the zone in which stitches are made without interfering with the work holder or guidance of the work.
Abstract: A trimming mechanism for a sewing machine for cutting the edges of a workpiece in the feeding direction by means of a reciprocating trimmer blade cooperating with a stationary counterknife. While sewing at high speed the trimmer blade is driven by the arm shaft of the sewing machine normally in synchronism with the needle. Drive- and control means are provided for imparting additional up and down movements to the blade when sewing at a low speed and continuation of trimming when the machine is stopped, in order to turn the workpiece about the needle, which is required when changing the sewing direction.