Automatic sewing device with a sewing head including a rotary housing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 29, 1988
Grant Date -
N/A
app pub date -
Jul 8, 1987
filing date -
Jul 31, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
At an automatic sewing device the sewing head for generating a tangential movement of the needle feed movement relative to the seam to be produced is provided with a rotary housing for receiving a needle bar, a needle jogging mechanism and a thread take-up lever drive, and a rotatable hook bearing for receiving a hook. In order to achieve constant stitch lengths even when the rotary housing and hook bearing are swivelled, the main drive shaft for the stitch forming instruments and the adjusting shaft for the rotary housing and the hook bearing are coupled via a differential gear in such a manner that at rotations of the adjusting shaft a swivelling motion is imparted to the main drive shaft, which acts against changes of the position of the needle bar, the needle jogging mechanism, the thread take-up lever drive and the hook.
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