Lower feed dog lifting, lowering, and horizontal coupling
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United States of America Patent
Stats
-
Apr 5, 1994
Grant Date -
N/A
app pub date -
Jan 2, 1991
filing date -
Jun 4, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Sewing machine with a lower feed dog, to which adjustable horizontal pushing motions are imparted by a driving cam via a stitch length regulating mechanism and vertical lifting movements are imparted by a driving cam via a lifting shaft. A lifting crank, with the free end of a follower mounted pivotably, can be swiveled out, in one position intended for sewing with a skipping feed into a slot of an oscillating crank mounted freely pivotably on the lifting shaft at a laterally spaced location from the lifting crank. In another position the follower is mounted into a slot of a holder, which is a rigid part of the housing and is arranged at a laterally spaced location from the lifting crank for bordering fabric edges with a band strip, fed in folded in the shape of a U around the fabric edges by a band strip bordering apparatus which participates in the horizontal feed motions of the feed dog.
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