发明授权
- 专利标题: Sewing machine-driving apparatus
- 专利标题(中): 缝纫机驱动装置
-
申请号: US727849申请日: 1991-07-09
-
公开(公告)号: US5146862A公开(公告)日: 1992-09-15
- 发明人: Tadashi Sato , Masaharu Imanishi , Katsuhiko Iwai
- 申请人: Tadashi Sato , Masaharu Imanishi , Katsuhiko Iwai
- 申请人地址: JPX Kadoma JPX Toyonaka
- 专利权人: Matsushita Electric Industrial Co., Ltd.,Yamato Mishin Seizo Kabushiki Kaisha
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.,Yamato Mishin Seizo Kabushiki Kaisha
- 当前专利权人地址: JPX Kadoma JPX Toyonaka
- 优先权: JPX2-189123 19900716
- 主分类号: D05B1/08
- IPC分类号: D05B1/08 ; D05B1/10 ; D05B69/18 ; D05B69/22 ; D05B69/26
摘要:
A sewing machine-driving apparatus forms an accurate and stable seam at a first stitch in a conventional double chain stitch or covering chain stitch sewing machine. Its motor is controlled so as to drive the sewing machine in a direction reverse to that of the usual sewing operation for a limited time period between the completion of a thread cutting operation and a point of time when the sewing machine needles reach their needle-down position. Thus, the stitching needles reach their lowest points without scooping a looper thread at the first stitch; assuring the formation of a stable and accurate seam in the second stitch.
公开/授权文献
- US4114001A Electrical switch having interlock between door and switch 公开/授权日:1978-09-12