Sewing machine having presser foot lifting device for adjusting a presser foot between first, second, and third positions
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United States of America Patent
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-
Oct 31, 1995
Grant Date -
N/A
app pub date -
Apr 14, 1994
filing date -
Apr 21, 1993
priority date (Note) -
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Abstract
A sewing machine of the type having an electronic control unit is provided with an arrangement comprising a needle mechanism with a needle bar, a presser bar (12) provided with a presser foot (13) and actuated by a resilient means (22) to provide a controllable presser foot pressure on the cloth (28) to be sewn, and a lifting device for adjusting the presser foot between its operative position and an inoperative position spaced from the cloth. According to the invention, the lifting device comprises a power driven lifting lever (15) coacting with the presser bar (12) for adjusting the presser foot (13) between said two positions and a third, operative position, in which the presser foot pressure is relieved, and the lifting lever (15) is operatively connected to said resilient means (22) for controlling the presser foot pressure.
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