摘要:
A buttonhole presser device includes a fabric presser unit; a fabric feed frame unit including a start position detecting member and an immovable receiving portion, the fabric feed frame unit being slidable relative to the fabric presser unit between a start position and an end position of the buttonhole; a button-diameter measuring unit including an end position detecting member and a movable receiving portion, the button-diameter measuring unit being configured to grip a button by being slid relative to the fabric feed frame unit; and a fixing unit that fixes the button-diameter measuring unit to the fabric feed frame unit when the button-diameter measuring unit is gripping the button between the immovable receiving portion and the movable receiving portion and that allows the button to be removed after the button-diameter measuring unit has been fixed to the fabric feed frame unit.
摘要:
An apparatus for winding round the stem of a button is disclosed wherein the drawbacks of the prior invention disclosed in U.S. Pat. No. 5,082,151 were settled. Namely, after drawing the winding thread from the bobbin and in the process of the winding operation, if the thread is recoiled and drawn, the tensile force of the thread decreases and during the winding operation maintaining high rotation speed, the thread is frequently cut off, which leads to the frequent interruption of the winding operation. It was very inefficient in the respect of operation and had impractical disadvantage.Such apparatus according to the present invention comprises a bobbin supporting means for interchangeably supporting the bobbin supplying the winding thread so as to rotate on its own axis to the unloosening direction of the thread in accordance with winding and drawing force of the thread, a thread winding means being fixedly mounted on the equal rotation axis to said bobbin supporting means for receiving from the bobbin the winding thread and winding it round the stem of the button while being rotated along with the bobbin in the equal direction and at the equal angular velocity, and a winding rotation means for rotatively mounting on the support the bobbin supporting means and the thread winding means being fixedly mounted on equal rotation axis and rotating it with driving force of a motor.
摘要:
A method is disclosed where a knot is formed in chain-stitching, and a first loop formed by a stitch to an article to be sewn, two stitches ahead of a final stitch, is drawn through a second loop which is formed by a stitch one stitch ahead of the final stitch, whereby a knot where the first loop is fastened by the second loop is formed, such that a third loop is inserted through the second loop and is then cut.
摘要:
A apparatus for forming a knot where a knot is formed in chain-stitching. In the method, a first loop is formed by a stitch to an article to be sewn, two stitches ahead of a final stitch, is drawn through a second loop which is formed by a stitch one stitch ahead of the final stitch, whereby a knot where the first loop is fastened by the second loop is formed, such that a third loop is inserted through the second loop and is then cut. The sewing machine including a single needle and a rotary looper and including a yarn feed adjusting device for adjusting a degree of feed of a yarn to the single needle. The yarn feed adjusting device sets a fed volume of the yarn during formation of the second loop to a value larger than that of the final or third loop and the first loop.
摘要:
In a button-holder for a button-sewing machine, two clamp parts (8,9) for the button (7) are guided in a parallel guide holder (28) so as to be movable by a pneumatic cylinder (34) in opposite directions. The parallel guide holder (28) is swingable horizontally by a pneumatic cylinder (17) to displace the clamp parts (8,9) from a sewing position (A) to a resting position (B).Thus, the button-holder does not require adjustment for different sized buttons and the button can be inserted away from the sewing region.
摘要:
A sewing machine comprises a sewing machine support arm with a cloth feeding plate mounted on the support arm over which the material to be sewn is fed. A stop element is mounted on the support arm and it overlies the cloth feeding plate and it includes a portion which defines a material stop against which the material to be sewn may be positioned. The stop is made of a compressible material and it is compressible in the direction toward the feeding plate. A presser plate associated with the machine may advantageously be in the form of a button clamp may be moved downwardly into engagement with the stop which is raised slightly above the material and compress it downwardly until the plate clamps the material in place for the sewing operation.
摘要:
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.
摘要:
A button attaching device is provided with a bifurcated needle holding member which can be utilized to adjust the spacing between a pair of needles, and with a needle cover which attaches to the bifurcated member to protect one from injury by the needles and form a unit that can be conveniently carried on the person of a user.
摘要:
Heels of leg portions of thermoplastic coupling elements are welded to the opposite sides of a polymer film tape leaving an edge portion of the tape between diverging inside surfaces of the leg portions spaced from the welds.
摘要:
Button stitching and sewing machine comprising a control disc with paths to control a needle swinging device and a cloth moving mechanism which is complete with an orienting device. Combined, conjugated control paths of the disc include first main sections for controlling button stitching, second such sections for controlling fixing stitches, and third main path sections for controlling the shank formation. According to the invention, fourth path sections are inserted for controlling through stitches, namely between the second and the third main path sections. Additional, optional features are also disclosed.