Janome Sewing Machine Company Limited

Koji Okutani

Mikio Koike

Mitsuru Nishijima

Eiichi Shomura

Michio Hisatake

Masashi Ninomiya

Satoshi Maruo

Hideaki Kambara

Eiji Kanno

Yasuhiro Suzuki

Kazumasa Hara

In a sewing machine having an automatic thread cutting mechanism, a situation of a thread cutting operation is detected in power-OFF to continuously carry out a proper operation when a power supply is turned ON again after sudden power-OFF. In a sewing machine having an automatic thread cutting mechanism, there is provided means for detecting an operation situation of the automatic thread cutting mechanism when a power supply is turned ON. Based on a signal for the detection, the automatic thread cutting mechanism is operated to complete a thread cutting operation and to carry out a control to return into an initial state when a stop is performed with the thread cutting mechanism in power-ON executing the thread cutting work.

Sewing machine having automatic thread cutting device

Disclosed is an automatic thread cutting device for a sewing machine which is provided with a horizontal loop taker, wherein a thread catching member () is operated in response to a thread cutting instruction to reciprocatingly move with a movable blade () along a predetermined course, the thread catching member () normally catching the upper thread when moving in the return-way of reciprocation to guide the upper thread to a fixed blade () which is provided to cut the upper thread in cooperation with the movable blade (), and wherein a thread regulating means is provided to cut the lower thread () together with the upper thread, the thread regulating means being operated to press down the lower thread () to a position where the lower thread () is caught by the thread catching member () in addition to the upper thread when the thread catching member () is moving in the return-way of reciprocation.

Automatic thread cutting device for sewing machine provided with horizontal loop taker

A lower thread tension adjusting device for a sewing machine comprising first and second tension arrangements mounted on a bobbin carrier of the sewing machine for tensioning a lower thread with a predetermined tension and a predetermined additional tension, respectively. A positioning device is mounted on the bobbin carrier and movable between first and second set positions in which the positioning devices moves the second tension arrangement to operative and inoperative positions wherein the second arrangement provides and does not provide the predetermined additional tension of the lower thread. A guide assembly guides the lower thread to positions adjacent to one end and a center of a laterally elongated needle hole and simultaneously guides the positioning device to the first and second positions thereof. A control unit moves the guide assembly between first and second guide positions thereof in accordance with selected patterns of straight and zigzag stitches, respectively.

Device for adjusting a lower thread in a sewing machine

An apparatus is disclosed relating to a control system of an embroidering machine controlled by a microcomputer for stitching names or other patterns.

Initial operation controlling system for a computer controlled

Growing community of inventors

Tokyo, Japan

Koji Okutani