Abstract: Provided with a cloth movement detection device and a sewing machine capable of precisely detecting a movement of a cloth. A cloth movement detection device includes: a light detection portion configured to detect a light for detecting a movement of a cloth; a body portion configured to be detachably attached to a presser bar of a sewing machine, the light detection portion being installed in the body portion; and a pressing support portion configured to be detachably attached to the body portion, a cloth pressing portion capable of contacting with the cloth being formed on the pressing support portion, wherein a window portion capable of transmitting the light is provided on a bottom surface of the body portion, and the cloth pressing portion is located lower than the bottom surface of the body portion in a state that the pressing support portion is attached to the body portion.

Abstract: Provided with a cloth movement detection device and a sewing machine capable of precisely detecting a movement of a cloth. A cloth movement detection device includes: a light detection portion configured to detect a light for detecting a movement of a cloth; a body portion configured to be detachably attached to a presser bar of a sewing machine, the light detection portion being installed in the body portion; and a pressing support portion configured to be detachably attached to the body portion, a cloth pressing portion capable of contacting with the cloth being formed on the pressing support portion, wherein a window portion capable of transmitting the light is provided on a bottom surface of the body portion, and the cloth pressing portion is located lower than the bottom surface of the body portion in a state that the pressing support portion is attached to the body portion.

Abstract: A sewing machine includes a feed amount setting part and a feed amount adjustment part. In the feed amount setting part, a forward feed amount for one stitch of forward stitching is set. In the feed amount adjustment part, the forward feed amount which is set by the feed amount setting part is compared with the maximum backward feed amount for one stitch of reverse stitching which is determined by a feed mechanism. Then, in the feed amount adjustment part, when the forward feed amount is larger than the maximum backward feed amount, the total amount of backward feed amounts for plural stitches of backward stitching is adjusted so as to coincide with the total amount of the forward feed amounts for one stitch or more of forward stitching.

Abstract: A sewing machine includes a feed amount setting part and a feed amount adjustment part. In the feed amount setting part, a forward feed amount for one stitch of forward stitching is set. In the feed amount adjustment part, the forward feed amount which is set by the feed amount setting part is compared with the maximum backward feed amount for one stitch of reverse stitching which is determined by a feed mechanism. Then, in the feed amount adjustment part, when the forward feed amount is larger than the maximum backward feed amount, the total amount of backward feed amounts for plural stitches of backward stitching is adjusted so as to coincide with the total amount of the forward feed amounts for one stitch or more of forward stitching.