Sewing machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 29, 2011
Grant Date -
Mar 5, 2009
app pub date -
Sep 2, 2008
filing date -
Sep 3, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sewing machine is provided. The sewing machine includes a top covering shaft mechanism, a spreader mechanism detachably attached to the top covering shaft mechanism from below and operable to catch a covering thread and to interlace the covering thread with a needle thread inserted into a needle to form covering stitches, and an operating member having a hook portion and rotatably attached to either one of the top covering shaft mechanism and the spreader mechanism. The other of the top covering shaft mechanism and the spreader mechanism has a protrusion with which the hook portion is engageable. The operating member is rotatable between a position at which the hook portion engages with the protrusion to lock the spreader mechanism with respect to the top covering shaft mechanism and another position at which the spreader mechanism is detachable from the top covering shaft mechanism.
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