Thread trimmer driving mechanism for sewing machines
US4138958A · kind A · utility
2Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1978 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | Mar 2, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B57/143
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A driving mechanism for actuating an underbed thread trimmer in a post-type sewing machine. The unit is selectively controlled by a solenoid and actuated by two cams located on the hook shaft of the feeding post. Rotary motion of the shaft and cams is converted into translational motion for the trimmer by a pivoting swivel lever and cam follower combination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.