Abstract: The sewing machine has: a base plate that has a guide slit for guiding a bobbin thread that is set on the bottom face side of the throat plate 1; and a bobbin thread guide member that has a guide groove for guiding the bobbin thread supplied from a bobbin and includes a cutting blade provide at the end position of the guide groove to cut the bobbin thread guided along the guide groove to an appropriate length. The bobbin thread guide member is secured to the base plate and has a holding member, which holds the end of the bobbin thread, in the guide groove, so as to maintain the state when the bobbin thread was cut.

Abstract: “BELT TENSIONER WITH HIGH DAMPING RUBBER DEVICE”, the present invention refers to the technical field of belt tensioners in general, more specifically a belt tensioner (1) with high damping and with a rubber device (2), designed to generate higher rigidity and high damping to belts in combustion engines. The object of the tensioner is to reduce manufacturing costs, wearing and noise, both of the tensioner itself and the belt.

Abstract: A method and system are disclosed for automatically generating embroidery designs from a scanned image. An embroidery data generating mechanism generates accurate embroidery designs. The embroidery data generating mechanism first reads an image data file, which contains bitmapping information generated from a software scanning tool, the information being related to an embroidery pattern that has been scanned. The scanned pattern is broken up into pixels, each pixel in the scanned image having a bitmap associated with the color of the pattern. Each unique color in the scanned pattern has its own unique bitmap. The embroidery generating mechanism also includes a segmentation mechanism and a chain-encoding mechanism which perform operations to enhance the quality of the bitmapped information and to separate regions of the scanned image into objects. A distance transform evaluation mechanism classifies each object as being either a thick object or a thin, predominantly regular object.

Abstract: Type information on sewing machine types and identification information for specifying a sewing machine are stored in a control unit and computer of the sewing machine. A server transmits display data for displaying a pattern selection edit screen to the sewing machine side. At the sewing machine side, a pattern is selected while the pattern selection edit screen is being viewed, and an edit processing is instructed. The server edits an embroidery pattern ordered at the sewing machine side, based on the instruction supplied from the sewing machine side. The server transmits the display data and sewing pattern data to the sewing machine side. Incorporated patterns and non-incorporated patterns at the sewing machine side are displayed identifiably on a display at the sewing machine side. The server charges for the non-incorporated newly purchased patterns.

Abstract: A button sewing machine includes a table which is reciprocated, and which is moved at a right angle to the direction of reciprocation by use of motors, instead of by a mechanical movement and a ROM (read-only memory) as found in conventional machines. The desired changes in stitch number and, in particular, a button sewing on pattern, are controlled automatically by making use of an electronic control device. Needle drop positions at which a deep stitch (show stitch) and a shallow stitch (ordinary stitch) are to be carried out are established by the use of two cylinders.

Abstract: A programmable sewing machine having movable work holding means, first and second separable button holding means, button supporting means movable into proximity with the button holding means and means to move the button holding means toward the sewing machine bed.

Abstract: An arrangement for adjusting the operative position of a button stitcher tongue includes a detented sliding mechanism for adjusting the position of the tongue relative to a pivotal bottom cloth presser. The tongue includes a pivotal portion and a cam member which contacts the sliding adjustment mechanism when the tongue is in a button stitching position. The tongue also includes a jigger button slot.

Abstract: A device for use in a button sewing machine which uses a wire of elastic material for maintaining looseness to that portion of the needle thread between a button and material to which the button is to be sewn while preventing the needle thread from being pulled out of the eye of the needle and at the same time preventing the wire from being warped.

Abstract: A button sewing machine including comprises a stitching needle supported for reciprocating movement up and down; a button holder for holding a sew-through button, which has been sewed on a piece of fabric via at least one looped thread connecting the sew-through button with the piece of fabric, so as to permit the looped thread to extend generally horizontally when the piece of fabric is folded to provide upper and lower segments thereof, one above the other; a fabric holder adapted to be inserted in between the upper and lower segments of the piece of fabric to support the piece of fabric with the upper and lower segments positioned above and below the fabric holder, respectively; a fabric retainer for pressing the upper segment of fabric from above to urge it against the fabric holder; a drive unit for driving the button holder and the fabric holder reciprocatingly and cyclically in a horizontal plane in first and second directions perpendicular to each other; a device for changing and setting the position

Abstract: A button sewing apparatus comprising a button supply device, a X-Y mover, a stay button chucking device, a surface button chucking device, a surface button turning device, a presser foot device, a thread guiding device and a thread holding device. Button neck wrapping is performed in a manner closely simulating "hand" sewing. After sewing both a stay button and a surface button to a workpiece, a sewing table makes a circular motion while keeping a needle entry as the center, and a thread is slidably clamped and guided to pass through a guide hole tentatively formed underneath a needle such that the thread wraps firmly around the button neck.

Abstract: A button sewing apparatus comprising a button supply device, a X-Y mover, a stay button chucking device, a surface button chucking device, a surface button turning device, a presser foot device, a thread guiding device and a thread holding device. Button neck wrapping is performed in a manner closely simulating "hand" sewing. After sewing both a stay button and a surface button to a workpiece, a sewing table makes a circular motion while keeping a needle entry as the center, and a thread is slidably clamped and guided to pass through a guide hole tentatively formed underneath a needle such that the thread wraps firmly around the button neck.

Abstract: An automatic button sewing machine for stitching buttons in series on a fabric includes a working table for supporting the fabric and a back-up plate movably disposed on the working table to back-up the fabric during button sewing operations. A button holder is provided for picking up a button and placing it at a desired position on the fabric. A cloth holding and shifting arm is provided for shifting the fabric from one button to the next. The cloth back-up plate, the button holder and the cloth holding and shifting arm are moved together, thereby placing the buttons at appropriate positions on the fabric during button sewing operations.

Abstract: A button sewing machine allows simultaneous sewing of both a stay button and a surface button to a workpiece and conducts button-neck-wrapping by inclining both buttons with a workpiece. A needle is arranged to travel between an upper needle bar spindle and a lower needle bar spindle, being received by each spindle alternately per each needle stroke, such that buttons are sewn in a manner closely simulating "hand" sewing. A worktable is arranged to move in both the X and Y directions in accordance with the button hole pitch distance in synchronization with the up and down motion of the needle.

Abstract: A button sewing machine has a sewing needle reciprocatingly movable in response to rotation of a main shaft and a button gripping assembly having gripping portions for gripping and releasing a button and movable across the path of reciprocating travel of the sewing needle, the sewing needle and the button gripping assembly being operable together for sewing the button to a fabric. The button sewing machine includes a detector for detecting whether the button is gripped by the gripping portions. After it has been confirmed that the button is gripped by the gripping portions, the main shaft is driven by a control assembly for enabling the sewing needle to sew the button to the fabric.

Abstract: A hand operated sewing machine with opposing loop seizing points for forming chain stitches. A work feeding plate reciprocates with a plate member about a pivot. A flexible upstanding portion at one end of an arm is biassed by the moving plate member causing the other arm end to bias a cam affixed to the loop seizing points. This bias determines the cam path taken by a drive pin that provides motion to the loop seizing points.

Abstract: A button sewing machine is provided on a fabric and button positioning plate with a thread supporting tongue to extend longitudinally in a needle hole into engagement with the underside of fabric and enable thread to be sewn under and across the tongue to prevent the fabric from slipping on the plate during a button sewing operation.

Abstract: A chain stitch sewing machine including a looper and cam assembly with cam tracks engageable by an actuator, a gate pivotally mounted on the assembly and a spring with one free end to engage and move the gate into positions controlling actuator movement between the tracks is provided with camming surfaces on a fixed member for lifting the free end of the spring to the top of the gate for passage from one side to the other.

Abstract: A work holding clamp for a four hole button sewing machine includes a button holding foot formed with a needle accommodating aperture having an hourglass shape with four recesses arranged at the corners of a square pattern graphically to indicate to an operator the proper hole orientation.

Abstract: A work clamp shifting mechanism for a four hole button sewing machine in which operator influenced cam shifts the work holding jaws between two detent retained positions and also releases the thread tension during each shift between detent positions to defer the work from being disoriented in the work holding jaws.

Abstract: A chain stitch sewing machine including a double pointed looper is provided with feeding mechanism in which looper motion is used in conjunction with needle motion to control the movement of work under the needle of the machine.

Abstract: A sewing machine is provided with a double pointed looper and actuating mechanism therefore including a double tracked cam, an actuator operable on the cam tracks, and a gate with a resiliently movable portion for controlling movement of the actuator between the cam tracks.