Abstract: In a needle plate, a needle plate hole is configured to include a hole-side cutting side that cuts a cutting target object together with a blade portion, and a relief side that allows a cut portion of the cutting target object to escape. Specifically, the needle plate hole has the hole-side cutting side that shears the cutting target object together with a blade-side cutting side of the blade portion, and the relief side that forms a gap between the blade portion to be inserted and the relief side. In this manner, in the former stage of cutting processing, the cutting target object can be cut by the hole-side cutting side and the blade-side cutting side.

Abstract: In a predictor device, a method for predicting a metric of a contact center includes receiving contact center operational data associated with a time duration; training a set of algorithms and their available hyperparameters with the contact center operational data to generate a set of data models; generating a score associated with each data model of the set of data models, the score quantifying a performance of each algorithm and its available hyperparameters on the contact center operational data; identifying the data model having the largest score as a best learning model for the time duration; and generating a contact center metric prediction based on the best learning model for the time duration.

Abstract: A guide is mounted to a rotary member which is freely rotatable about the axis of a needle bar, and guides a sewing material to a needle drop position of the sewing needle. A cutter device is mounted to a side of the rotary member opposed to the guide in such a manner that the cutter device is rotatable together with the rotary member for cutting the sewing material, having been paid out from the guide, at a predetermined cutting position. A retention mechanism is incorporated in the cutter device for retaining an end portion of the sewing material, at a position closer to the guide than the predetermined cutting position and in interlocked relation to cutting, by the cutter device, of the sewing material. Thus, upon restart of sewing of the sewing material, the retention mechanism retains an end portion of the sewing material.

Abstract: An overlock sewing machine includes an upper knife which is movable to a withdrawn position or a driving position, an upper knife driving unit which moves the upper knife, an interlocking switching unit which switches between an interlocking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 device for cutting textile and non-textile sheet materials with a sewing machine having a turning device (9) that can be mounted on the lower end of the needle bar (5). A cutting needle (23) is inserted from below into the turning device (9) instead of a sewing needle and can be brought into the desired cutting position, for example, by a fin (17) that projects from the turning device (9).

Abstract: The cutting device comprises a first block or ram, and a second block or receptacle. The ram has a channel that extends along its longitudinal length, the channel is sized and configured to accept at least a portion of a cutting blade. The receptacle has a hollow sized and configured to accept at least a portion of the ram. The blade is arranged within the hollow and extends from the receptacle into the hollow and toward the ram. The blade is advantageously recessed within the ram. In one embodiment, the ram is attached to a drive coupled to a sewing machine, and the receptacle is attached to the sewing machine. The ram is moveable between a retracted position, in which the ram is separated from the receptacle, and an extended position, in which at least a portion of the ram is housed within the receptacle.

Abstract: A shuttle embroidery machine having an attachment, corresponding to each needle, for the selective application of dish-shaped sequins onto a cloth wherein the continuous strip of dish-shaped sequins is indexed by a rotary feed wheel through a feed member having a channel for guiding the dish-shaped sequins for severance. Each dish-shaped sequin sequentially exits the channel by a cutting blade actuated at appropriate times in coordination with the needle that sews each dish-shaped sequin to the cloth.

Abstract: A trimming pressure foot that can be interchangeably attached to a sewing machine includes one scissors blade fixedly attached to a pressure foot and one scissors blade pivotable about a shaft. The cutting motion is derived from the up-and-down motion of a needle drive rod. To this end, a pivot lever which is essentially in the shape of an inverted T is used. The pivot lever is pivotable about a shaft connected to the pressure foot, and its upwardly protruding arm rests with spring pressure on a needle securing screw. A flank of the arm resting on the screw forms an acute angle with the path of motion of the needle drive rod. In operation of the sewing machine, the up-and-down motion of the needle drive rod is converted into a pivoting motion of the pivot lever. The pivoting motion of the lever is transmitted onto the pivotable cutting blade by a tang secured to the pivot lever and by engaging the inside of a slit of the blade.

Abstract: A work cutting attachment for use with a zigzag sewing machine having a presser bar, an endwise reciprocating needle bar and a feed dog. The attachment includes a base plate removably secured to the presser bar, a presser foot mounted on the base plate for holding a work fabric against the feed dog and having a needle clearance aperture, a fixed blade secured to the presser foot, a cutting blade operable in cooperation with the fixed blade, a support mechanism for supporting the cutting blade for vertical movement relative to the fixed blade, and a driving mechanism operatively connected to the needle bar for transmitting the vertical movement of the needle bar through the support mechanism to the cutting blade so as to move the latter vertically relative to the fixed blade.

Abstract: An edge trimmer guide for a sewing machine which is removably attached to a sewing machine has a head, a body and a foot. The cylindrical head is provided with an outer wall and an inner wall, both of which are formed integral with a vertical wall and are arranged concentrically to form a clearance therebetween into which a front edge of a side cover of the edge trimmer is fittable. The outer and inner walls extend horizontally in parallel to form a first and a second horizontal wall of the body respectively in such a way that a clearance is arranged therebetween into which a horizontal edge of the side cover of the trimmer is fittable. Another clearance is arranged between a slanted wall extended from the vertical wall and a depending wall of the first horizontal wall. A vertical edge of the side cover of the trimmer may be fitted into the second clearance while a guide foot is projected horizontally from the depending wall in parallel with the slanted wall toward the vertical wall of the head of the guide.

Abstract: A work cutting attachment for use with a zigzag sewing machine having a reciprocatory needle bar, a presser bar and a feed dog. The attachment includes a base plate, a mounting mechanism for removably securing the base plate to the presser bar, an interlocking mechanism pivotally supported on the base plate and engageable with the needle bar for vertical swinging movement therewith, a movable and a fixed knife disposed generally behind the needle bar relative to the direction of work advancement, a guide member for guiding the fabric chip cut by the knives in a direction moving away from the work fabric to be sewn, and a presser foot disposed generally below the needle bar and cooperating with the feed dog to hold and feed the work fabric to be sewn.

Abstract: There is an upper lever pivotably supported by an L-shaped arm of a stand positioned on a base or by a bended arm of a stand integral with a holder. One edge of the upper lever is movably fastened to a needle bar of a sewing machine by a needle clamping screw for fastening a needle to the needle bar through a needle clamp body concurrently while the other end thereof is pivotably connected to one of the projected arms of a lower lever through a connecting link. When the upper lever thus constructed oscillates in unison with an up and down motion of the needle bar of the sewing machine, a cutter which is fastened dependingly to the edge of the other projected cylindrical arm of the lower lever shifts up and down with the result that the cutter thereof touches slidably with a shearing edge defined along the front edge of the L-shaped arm portion of the base or a shearing plate fastened to the holder, thereby an edge of cloth materials fed by the feeding device of the sewing machine may be trimmed.

Abstract: An attachment for cutting the edge of a length of material travelling towards a sewing location is mounted on the working or operating surface of a sewing machine. A drive fork is acted upon by a needle bar and drives a movable cutter blade via a drive or control cam carrier. The movable cutter blade is arranged at a blade holder which is pivotable about a pivot axis which is laterally spaced from a cutting plane defined by the movable cutter blade and a fixed cutter blade. A large throughpassage or space for strips separated from the length of material by the cutter blades is formed between the cutting plane and the blade holder.

Abstract: Two blade members are counter-rotated from a rest position to a cutting position in which radially directed cutting surfaces cooperate to snip a strip of material by a shearing action as the strip of material flows from a sewing machine or other processing machine. The blade members are reversible and are biased against each other to ensure positive cutting. A hinge-like linkage permits an offset between the blade members and power means to increase versatility. The cutting apparatus can include sensing means to permit automatic cutting of a completed workpiece from an excess of a strip of material which is sewn to the workpiece during the manufacture of a garment.

Abstract: A sewing machine (10) for mass producing zipper closable garment pocket entries (65) includes a pair of pocket entry (65) in a plurality of garments (50,72,80). The apparatus 10 is a modification of a conventional type of double needle sewing machine and includes knife blades (18) spaced laterally apart from each other which cooperate with a pair of conventional double needles (12) to cut in advance of each stitch (58) and enable provision of a square miter at the ends of each finished pocket entry (65). The knife blades (18) are disposable between and behind the two needles (12) in the material feed direction. A feeder mechanism feeds continuous zipper tape (38) across the throat plate (16) beneath the needles (12) and knife blades (18) which may be selectively lowered and raised by the operator. The knife blades (18) operate in conjunction with the needle bar (14) movement only when engaged so as to cut in advance of each stitch while being unaffected by needle bar movement when disengaged.

Abstract: A knife operating device for sewing machines includes a needle stub pivotally mounted to the front part of a rocking arm. The rocking arm intersects with a needle stub guiding bar and is pivotally mounted and its rear end. A knife holder is, also, connected to the rocking arm and is guided so as to be movable with the needle stub.