Sewing machine needle positioning
US4351254A · kind A · utility
14Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 8, 1981 |
| Grant date | Sep 28, 1982 |
| Priority date | — |
| Expiry date | Jun 8, 2001 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B69/26
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In an electronically controlled sewing machine having an arm shaft position sensor signalling release of feed data and of needle position data at opposite extremes of endwise reciprocation of a needle bar, depression of a needle up or needle down position button will implement a slow speed drive circuit, and a fast stop brake circuit will stop the needle bar immediately upon the occurrence of a signal from the arm shaft position sensor corresponding to the selected needle position button.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.