Presser foot device for a sewing machine
US6073567A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 1998 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | May 7, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B29/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The load which is applied during a period when a presser foot is retracted is reduced, and the time period required before the restart of the sewing operation is shortened. A swing member which is swung in a predetermined range by a cam for driving a presser foot and fixed to the main shaft is coupled also with the presser foot through a link. The presser foot is vertically moved by the link mechanism in synchronization with the rotation of the main shaft. Joint movement direction controlling device is disposed. The device restricts the direction of a reciprocation locus of one joint of the link mechanism, and changes the movement direction of the reciprocation, thereby causing the second swing member to operate so as to vertically move the presser foot in a predetermined range, and the presser foot to be set in a raised state in which the presser foot is raised to a retraction position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.