Walking foot feed for sewing machines
OwnerRobert E. Porterinventor
Life of this patent
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Abstract
A walking foot top feed for a sewing machine in which a walking foot is supported on a beam and a presser foot is supported on an arm, an independent beam being connected to both the presser foot arm and to the walking foot beam and a source of power being connected to the independent beam, the independent beam transferring motion from the source to the walking foot beam and to the presser foot arm to cause out-of-phase movement of the walking foot and the presser foot.
Claims9
In a sewing machine having a source of driving power, a presser foot and a walking foot top feed, the combination of a beam supporting said walking foot top feed, an arm supporting said presser foot, an independent pivoting beam, means pivotally connecting said independent beam to said arm and to said walking-foot supporting beam and means connecting said independent beam to said source of driving power to cause said walking-foot top feed to travel in a substantially out-of-phase relationship with said presser foot.
Dependencies are inferred from the claim text.