Brother Kogyo Kabushiki-kaisha

Yoshihisa Shoji

Shinya Fujihara

Noboru Mizuno

An attachmentcomprises: a carriage connecting sectionconnected to a carriageof an embroidery frame transfer device; and a metal fastener fixed to an attaching blockat the right-hand end portion of the carriage connecting sectionand having a connecting section of a nonstandard embroidery frameconnected thereto. By connecting a connecting sectionof the nonstandard embroidery frameto the metal fastenerof the attachmentand by connecting the carriage connecting sectionof the attachmentto the carriage, the nonstandard embroidery framecan be mounted indirectly on the carriage. Thus, the nonstandard embroidery frameof the type different in construction for attachment to the carriagecan be connected to the carriage

Embroidery frame transfer device and attachment

A sewing machine includes a needle bar holding a sewing needle having an eye hole, a needle threading mechanism including a threading hook passing a needle thread through the eye hole of the sewing needle, a presser bar with a presser foot attached to its lower end, a vertically moving mechanism vertically moving the presser bar, a drive mechanism driving the vertically moving mechanism, a threading operation unit operating the needle threading mechanism, and a drive mechanism controlling unit controlling the drive mechanism vertically moving the presser bar to a position where interference between the presser foot and threading hook is avoided when the needle threading operation unit is operated.

Sewing machine with automatic needle threader

A sewing machine includes a thread transferring mechanism automatically hooking onto thread hooking sections a needle thread which extends from a thread supply and which is retained in a predetermined thread preparatory path while retaining the needle thread so that the needle thread can be turned over to a needle threading mechanism, and a control unit which controls a thread tension adjusting unit so that tension applied to the needle thread becomes a predetermined tension that correlates with a transfer position of the needle thread transferred by the thread transferring mechanism.

Sewing machine with automatic threader

A sewing machine includes a plurality of thread hooking sections including a thread take-up lever and a thread tension regulator, and a thread guide thread hook mechanism having a thread hook member which is moveable nearly parallel to the vertical surface from a stand-by position to a thread hooking position. The sewing machine is configured to hook the extent of the needle thread from a thread transferring member moved to the vicinity of the eye to the thread take-up lever to hook it onto the needle bar thread guide.

Sewing machine with automatic threading mechanism

The hook mechanism 30 and the first thread guide member 24 are attached to the lower end of the needle threading shaft 21 so as to be integrally with each other. The second thread guide member 26 is rotatably supported by the needle threading shaft 21. When the needle threading shaft 21 rotates in the clockwise direction C, the second thread guide member 26 is pivoted by the link mechanism 50 in the direction toward the hook mechanism 30 and away from the first thread guide member 24. As a result, the needle threading hook 32 reaches the sewing needle 11 and penetrates through the sewing needle eye 11a of the sewing needle 11. Also, an amount of the upper thread 23 required for threading the sewing needle 11 is automatically fed from the free end portion 23a of the upper thread 23 in a simple manner.

Needle threading device used in sewing machine

A pattern data processing device processes a pattern data adapted for controlling a sewing machine to attain a relative movement between a cloth to be stitched and a sewing needle of the sewing machine thereby forming a desired stitch pattern on the cloth. The pattern data processing device includes: a unit pattern storing device for storing a plurality of pattern data each for forming a unit-pattern; a reference pattern storing device for storing pattern data for forming a reference pattern inside or outside of which the unit-pattern is to be arranged and position-relevant data indicative of positions at which the unit-pattern is to be arranged inside or outside of the reference pattern; a unit-pattern selecting apparatus for selecting pattern data corresponding to a desired unit-pattern from the unit-pattern storing device; synthesizing device for a synthesizing a pattern data for a composite pattern in which the selected unit-pattern is arranged inside or outside of the reference pattern, on the basis of the pattern data of the selected unit-pattern and the pattern data of the reference pattern and the position-relevant data; and a composite pattern storing apparatus for storing the synthesized pattern data for the composite pattern.

Growing community of inventors

Okazaki, Japan

Yoshihisa Shoji