Top transport for sewing machines
US4611548A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1985 |
| Grant date | Sep 16, 1986 |
| Priority date | — |
| Expiry date | Sep 30, 2005 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B27/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A top transport device on sewing machines includes a spring-loaded presser bar mounted for vertical movement, which is firmly connected with a presser foot, and with a two-armed top transport rocker in operative connection at its upper end via a connecting linkage with a feed drive and carrying a top transport foot, the rocker being mounted on a seating disposed on the presser bar. To improve the kinematic connection between top transport foot and presser foot, the seating is mounted freely displaceable on the presser bar and connected with a bearing piece fastened on the presser bar via an articulated link mechanism, at the articulated joint of which a lifting drive engages. A transitional phase of the pressure shift between presser foot and top transport foot when the latter sets down on the work and when it lifts off results by a connection of the top transport rocker with the seating via a limitedly swingable link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.