Roller activated stop motion mechanism for an eyelet buttonhole machine
US5460107A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1993 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Sep 29, 2013 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B69/22
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to the braking mechanism of sewing machines and provides a smooth stop motion to halt the machine. The braking phase of the stop motion involves a roller controlled brake pad which slows down the machine prior to the stop dog contacting the stop bolt. The roller, when activated, runs along the right hand stop wheel and verifies the distance of the brake pad from the stop wheel for one revolution. The roller falls into an indentation and is then ejected away from the right hand stop wheel by a notch, thereby descending the brake pad a small distance onto the stop wheel for one more revolution. At this point, the brake attenuates much of the machine's momentum. After one revolution of braking, the machine comes to a smooth stop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.