Janome Corporation

Yoshitaka Bamba

Koji Maeda

Tatsuo Takei

Tomoro Mifuji

The needle-threading device includes a needle-threading shaft that is parallel to a vertically-moving needle bar and that is vertically movable and rotatable, a control lever that lowers and rotates the needle-threading shaft, a needle-threading end section provided at a lower end of the needle-threading shaft and having a needle-threading hook, and a needle-threading stopper provided at the needle bar and defining a lowered stoppage position of the needle-threading shaft. The needle-threading end section lowered by operating the control lever rotates at the lowered stoppage position and causes the needle-threading hook to be inserted through a needle hole of one needle of a plurality of needles provided at the needle bar. The needle-threading end section includes a sliding body that vertically moves relative to the needle-threading shaft, a positioning body slidable relative to the sliding body, and an interlocking mechanism that vertically moves the sliding body.

Needle-threading device for sewing machine and sewing machine equipped with said device

A sewing control device includes in a sewing machine having upper feed function a control device which controls feed of an object to be sewn. A lower feed amount setting motor sets a feed amount of a lower feed dog and an upper feed amount change motor changes a feed amount of an upper feed dog. A feed execution range, in which the feed of the object to be sewn is executed by an appropriate feed amount while the object to be sewn is sandwiched between the lower feed dog and the upper feed dog, and a feed non-execution range, in which the feed of the object to be sewn is not executed in a state in which the feed dogs do not act on the object to be sewn, are present. The feed amount of the upper feed dog can be changed only in the feed non-execution range during sewing.

Growing community of inventors

Hachioji, Japan

Yoshitaka Bamba