Needle position indicating device for a sewing machine
US4598657A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1985 |
| Grant date | Jul 8, 1986 |
| Priority date | — |
| Expiry date | Sep 30, 2005 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B69/24
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
When a sewing machine is stopped, it is electrically indicated whether a needle is positioned at a range where the thread passing is available so that intermittent indication during stitching operation is not made. The sewing machine is provided with a device including a neon lamp and a light interrupting member. The sewing machine has on its exposed front surface lighting indicators which are illuminated by the light of the neon lamp if this light is transmitted by the interrupting member which is mounted on or in the vicinity of the movable device for vertical movement of the needle so that the indicators indicate in the inoperative position of the sewing machine that the thread may be passed in a thread passing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.