Abstract: Provided is a threader for an overlock machine that allows the whole machine to be made compact and allows an operator to carry out threading reliably with one hand. The threader comprises: a threading shaft that moves vertically and is supported rotatably, with a shaft core being taken as a central axis; a threading hook that is fixed to the lower end of the threading shaft and that includes a hook part that can be inserted into the needle eye of a sewing needle and a first guide part that guides the hook part to the needle eye; and a thread guide member that guides a needle thread to the hook part in the vicinity of the descent limit point of the threading shaft. The threading hook is rotated by a predetermined angle so that the hook part is inserted into the needle eye of the sewing needle in the vicinity of the descent limit point of the threading shaft.

Abstract: A threading device for a sewing machine lower looper is disclosed that can thread a lower looper safely and reliably by reliably preventing a main shaft from rotating when an operation of threading the lower looper is carried out.

Abstract: A sewing machine auxiliary storage compartment is provided that can be attached to or detached from a sewing machine body part and that allows small articles such as accessories to be taken out therefrom or put thereinto even during sewing. Upper and lower parts are attached slidably with respect to each other. The upper part 11 is provided with an attachment part 116 that can be attached to the sewing machine body part by its one end. The lower part 12 is attached to the upper part 11 slidably in a direction crossing a workpiece feeding direction when the upper part 11 and the sewing machine body part are attached together. A storage part 122 for storing accessories is provided in the lower part 12, which is located on the opposite side to the one end.

Abstract: A sewing machine auxiliary storage compartment is provided that can be attached to or detached from a sewing machine body part and that allows small articles such as accessories to be taken out therefrom or put thereinto even during sewing. Upper and lower parts are attached slidably with respect to each other. The upper part 11 is provided with an attachment part 116 that can be attached to the sewing machine body part by its one end. The lower part 12 is attached to the upper part 11 slidably in a direction crossing a workpiece feeding direction when the upper part 11 and the sewing machine body part are attached together. A storage part 122 for storing accessories is provided in the lower part 12, which is located on the opposite side to the one end.

Abstract: The present invention provides a threader of a sewing machine in which the entire head portion can be made compact and the operator can perform threading work with one hand. The threader comprises: a threading shaft approaching a needle bar for moving a supporting sewing needle vertically; a threading hook for moving a hook portion in and out of a needle hole; a positioning member for regulating a lowermost position of the threading shaft to a position where the height of the hook portion matches that of the needle hole; a first rotary mechanism for rotating by a predetermined angle near the lowermost point of the threading shaft so that the hook portion is inserted into the needle hole of the sewing needle; and a thread-guiding member for guiding the top thread to the hook portion at a near lowermost point of the threading shaft.

Abstract: The present invention provides a bobbin thread feeder of sewing machine of simple structure in which a lower thread can be reliably fed at an appropriate tension. A lower thread bobbin 21 can be removably contained through an opening for containing a lower thread bobbin 17 in a rotary hook 20 of a horizontal rotary hook 30 provided in a sewing machine frame. A thread tension plate and a thread tension spring are attached while overlapping along the inner circumference of the rotary hook 20, and function as a tension generating portion 22 for imparting resistance to pulling out a lower thread being guided through the gap between the thread tension plate and the thread tension spring. A needle plate 16 with an opening for taking the lower thread bobbin 21 in and out is provided above the rotary hook 20. The needle plate 16 comprises a guiding slit 27 that guides the lower thread formed thereon.

Abstract: A sewing machine capable of preventing formation of no first stitch (skipping stitch), which is readily caused immediately after the sewing machine starts to operate, is obtained. In this sewing machine, a motor is so stopped as to locate a thread engaging part of a balance in the vicinity of a forward movement starting point leftward beyond a thread receiving opening of a thread guide plate. Thus, the thread engaging part of the balance reliably captures and pulls a needle thread immediately after the sewing machine starts to operate. Consequently, formation of no first stitch (skipping stitch), which is readily caused immediately after the sewing machine starts to operate, is prevented.

Abstract: A sewing machine capable of preventing formation of no first stitch (skipping stitch), which is readily caused immediately after the sewing machine starts to operate, is obtained. This sewing machine comprises a first detector detecting that a thread engaging part of a balance is located in the vicinity of a forward movement starting point leftward beyond a thread receiving opening of a thread guide plate and an indicator operating on the basis of a detection signal received from the first detector. Thus, the operator can recognize that the thread engaging part of the balance is located in the vicinity of the forward movement starting point leftward beyond the thread receiving opening of the thread guide plate through the indicator.

Abstract: A sewing machine capable of preventing formation of no first stitch (skipping stitch), which is readily caused immediately after the sewing machine starts to operate, is obtained. This sewing machine comprises a first detector detecting that a thread engaging part of a balance is located in the vicinity of a forward movement starting point leftward beyond a thread receiving opening of a thread guide plate and an indicator operating on the basis of a detection signal received from the first detector. Thus, the operator can recognize that the thread engaging part of the balance is located in the vicinity of the forward movement starting point leftward beyond the thread receiving opening of the thread guide plate through the indicator.

Abstract: A sewing machine capable of preventing formation of no first stitch (skipping stitch), which is readily caused immediately after the sewing machine starts to operate, is obtained. In this sewing machine, a motor is so stopped as to locate a thread engaging part of a balance in the vicinity of a forward movement starting point leftward beyond a thread receiving opening of a thread guide plate. Thus, the thread engaging part of the balance reliably captures and pulls a needle thread also immediately after the sewing machine starts to operate. Consequently, formation of no first stitch (skipping stitch), which is readily caused immediately after the sewing machine starts to operate, is prevented.