Sewing machine having work holder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 2, 2001
Grant Date -
N/A
app pub date -
Jun 19, 2000
filing date -
Jun 21, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sewing machine calculates a standard sewing speed N to the Pth stitch, and a position of the Pth stitch. When the Pth stitch point is in a first area within a work holder, the sewing speed is determined to be N rpm. In a second area, it is determined to be N-100 rpm. In a third area, it is determined to be N-200 rpm. The distance from the first area to the connecting part of a work holder driving mechanism is the shortest. The distance for the second area is the next. The distance for the third area is the longest. Therefore, the larger the damping by the movement of the work holder is, the slower the sewing speed is set to. The sewing speed for each stitch created by the stitch formation mechanism can be set as fast as possible so that the damping is substantially settled. Thus, the quality of sewing can be secured and the entire sewing speed can be increased, thereby reducing the sewing time.
First Claim
Other Claims data not available