Abstract: A needle threading device of a sewing machine, wherein an operating lever is manually operated to move down against spring action until a threading hook secured to the lower end of a threading bar comes to a position where there is an eye of machine needle. The threading bar is then axially rotated. With the axial rotation of the threading bar, the threading hook is rotated to pass through the needle eye. With release of the operating lever from the manual operation, the threading bar is moved up by spring action while the threading hook catches an upper thread of the sewing machine and is pulled out of the needle eye.

Abstract: Disclosed is a needle threading device of sewing machine, wherein an operating lever is manually operated to move down against spring action until a threading hook secured to the lower end of a threading bar comes to a position where there is an eye of machine needle. The threading bar is then axially rotated. With the axial rotation of the threading bar, the threading hook is rotated to pass through the needle eye. With release of the operating lever from the manual operation, the threading bar is moved up by spring action while the threading hook catches an upper thread of sewing machine and is pulled out of the needle eye. More precisely, with downward movement of the operating member C, the threading bar 2 and the thread holder D are moved down to a lower end of a first region defined by a guide means where the upper thread extended between the thread holder D and a thread anchoring member 4f arranged at the lower end of the threading bar 2 is located at a level below the level of the needle eye 17a.

Abstract: An embroidering sewing machine comprising a needle vertically reciprocated to stitch a work; an embroidering frame for holding the work to be stitched; a base (2) enclosed to provide a predetermined space therein; a driver means arranged in the base (2) and including a carriage assembly operatively connected to the embroidering frame and operated in synchronism with vertical movement of the needle to move in X-direction and in Y-direction normal to X-direction, the carriage assembly including a base carriage (5) movable in X-direction, an intermediate carriage (6) operatively connected to the base carriage (5) to move therewith and being movable in Y-direction relative to the base carriage (5), a distal end carriage (7) operatively connected to the intermediate carriage (6) to move therewith; a transmission means arranged between the intermediate carriage (6) and the distal end carriage (7) and transmitting the movement of the intermediate carriage (6) to the distal end carriage (7) to move the distal end car

Abstract: A sewing machine with a work pressing bar positioning device is disclosed, the sewing machine substantially comprising a work pressing bar holding mechanism including an upper holder movable axially of a work pressing bar and a lower holder fixedly connected to the work pressing bar, spring means including a compression spring having a force for normally pressing down the upper holder axially of the work pressing bar, a height changing mechanism including a guide member which is operated to move between a first position laterally close to the work pressing bar and a second position laterally away from the work pressing bar and a transmission mechanism operated in response to operation of the guide member to operate the work pressing bar holding mechanism, the transmission mechanism including upper and lower links which are operatively connected to each other and to the guide member while the upper link has one end operatively connected to the upper holder and the lower link has one end operatively connected t

Abstract: A sewing machine with a work pressing bar positioning device is disclosed, the sewing machine substantially comprising a work pressing bar holding mechanism including an upper holder movable axially of a work pressing bar and a lower holder fixedly connected to the work pressing bar, spring means including a compression spring having a force for normally pressing down the upper holder axially of the work pressing bar, a height changing mechanism including a guide member which is operated to move between a first position laterally close to the work pressing bar and a second position laterally away from the work pressing bar and a transmission mechanism operated in response to operation of the guide member to operate the work pressing bar holding mechanism, the transmission mechanism including upper and lower links which are operatively connected to each other and to the guide member while the upper link has one end operatively connected to the upper holder and the lower link has one end operatively connected t