A sewing apparatus for applying a stitch of thread to a piece of fabric is provided. The apparatus housing includes a platform for supporting a piece of fabric, and contains a grasping member that is moved to grasp and release a thread segment fed through the housing by a needle holder. The needle holder is positioned to hold a needle that has a needle aperture for pass-through, therethrough of the thread segment, and is movable between a withdrawn position, and an advanced position in which the needle holder drives the needle through the piece of fabric to bring the thread segment into position for grasping by the grasping member. The sewing apparatus also including a needle holder driver for driving the movement of the needle holder and a thread puller for pulling the thread segment to an exterior of the housing for a user to cut.

A sewing apparatus for applying a stitch of thread to a piece of fabric is provided. The apparatus housing includes a platform for supporting a piece of fabric, and contains a grasping member that is moved to grasp and release a thread segment fed through the housing by a needle holder. The needle holder is positioned to hold a needle that has a needle aperture for pass-through, therethrough of the thread segment, and is movable between a withdrawn position, and an advanced position in which the needle holder drives the needle through the piece of fabric to bring the thread segment into position for grasping by the grasping member. The sewing apparatus also including a needle holder driver for driving the movement of the needle holder and a thread puller for pulling the thread segment to an exterior of the housing for a user to cut.

A sewing device includes a power source, an input shaft to which a driving force from the power source is transmitted, an output shaft that outputs the driving force transmitted to the input shaft, and a transmission mechanism that transmits the driving force from the input shaft to the output shaft, in which the transmission mechanism includes a first gear that is provided in the output shaft and rotates integrally with the output shaft, a second gear that meshes with the first gear, an intermediate shaft that rotates integrally with the second gear, and a timing belt stretched between the input shaft and the intermediate shaft, in which the second gear is disposed to be movable in a circumferential direction of the first gear. As a result, loosening of the timing belt can be adjusted in a compact configuration.

A sewing device includes a power source, an input shaft to which a driving force from the power source is transmitted, an output shaft that outputs the driving force transmitted to the input shaft, and a transmission mechanism that transmits the driving force from the input shaft to the output shaft, in which the transmission mechanism includes a first gear that is provided in the output shaft and rotates integrally with the output shaft, a second gear that meshes with the first gear, an intermediate shaft that rotates integrally with the second gear, and a timing belt stretched between the input shaft and the intermediate shaft, in which the second gear is disposed to be movable in a circumferential direction of the first gear. As a result, loosening of the timing belt can be adjusted in a compact configuration.

Provided is a method for preparing sewing guide patterns suitable for constructing groups of patchwork components used in quilting. A rectangular sewing guide outer perimeter exactly includes either two or four congruent instances of rectangular, right-angle triangle or isosceles triangle patchwork components. A nested series of additional sewing guide elements are placed inside the rectangle where the points of each element are placed at the midpoints of the sides of the previous element. The number of elements is selected in consideration of aesthetic objectives. Final sewing guide patterns are prepared by adding a space equal to two times a seam allowance between each of the shared sides of the contiguous instances of the patchwork components in the rectangle and added elements. The pattern is suitable for assembling a plurality of patchwork components by methods known in the art as foundation piecing. The components are released by cutting between the added spaces.

Provided is a method for preparing sewing guide patterns suitable for constructing groups of patchwork components used in quilting. A rectangular sewing guide outer perimeter exactly includes either two or four congruent instances of rectangular, right-angle triangle or isosceles triangle patchwork components. A nested series of additional sewing guide elements are placed inside the rectangle where the points of each element are placed at the midpoints of the sides of the previous element. The number of elements is selected in consideration of aesthetic objectives. Final sewing guide patterns are prepared by adding a space equal to two times a seam allowance between each of the shared sides of the contiguous instances of the patchwork components in the rectangle and added elements. The pattern is suitable for assembling a plurality of patchwork components by methods known in the art as foundation piecing. The components are released by cutting between the added spaces.

A sewing apparatus includes a driving source, a second driven shaft, and an eccentric member of an eccentric mechanism. The second driven shaft is connected to a drive shaft of the driving source and rotates. The eccentric member is connected to the second driven shaft. The eccentric member is capable of converting the rotational motion of the second driven shaft into the up and down motion of sewing machine needles. A cushion member is disposed between the eccentric member and the second driven shaft.

A sewing apparatus includes a driving source, a second driven shaft, and an eccentric member of an eccentric mechanism. The second driven shaft is connected to a drive shaft of the driving source and rotates. The eccentric member is connected to the second driven shaft. The eccentric member is capable of converting the rotational motion of the second driven shaft into the up and down motion of sewing machine needles. A cushion member is disposed between the eccentric member and the second driven shaft.

The operation information acquisition device includes the external detection device which is provided on the outer side of the main body frame of the sewing machine and detects the state change of the operating member that performs the periodic operation at the same cycle as the up-down movement operation of the sewing needle, the operation information acquisition device acquires operation information based on detection result of the external detection device. The operation information acquisition device can acquire the operation information such as the “number of stitches”, the “operating hours”, the “sewing speed”, and the “number of times of thread cutting”.

The operation information acquisition device includes the external detection device which is provided on the outer side of the main body frame of the sewing machine and detects the state change of the operating member that performs the periodic operation at the same cycle as the up-down movement operation of the sewing needle, the operation information acquisition device acquires operation information based on detection result of the external detection device. The operation information acquisition device can acquire the operation information such as the “number of stitches”, the “operating hours”, the “sewing speed”, and the “number of times of thread cutting”.