Selecting mechanism of a double-function sewing machine
US4721049A · kind A · utility
2Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1987 |
| Grant date | Jan 26, 1988 |
| Priority date | — |
| Expiry date | Mar 30, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B69/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a sewing machine having two mechanisms different in sewing functions installed within one machine frame a single drive motor is provided and functions are alternately actuated by means of a clutch mechanism. Transmission of a driving force is made by keys and corresponding key grooves, and a selection mechanism has a switch-checking device for avoiding an erroneous operation. A release device of the switch-checking device is actuated by operation of the flywheel, to avoid dangers of erroneous switching during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.