Work-sheet pressing apparatus for sewing machine

Details Work-sheet pressing apparatus for sewing machine Work-sheet pressing apparatus for sewing machine

1996-02-12

1997-11-18

Nerbun, Peter

Sewing

Special machines

Pattern controlled or programmed

112239, D05B 1912, D05B 2902

Patent

active

056876599

ABSTRACT:
An apparatus for moving a work-sheet pressing member of a sewing machine relative to a work-sheet supporting member to press a work sheet on the work-sheet supporting member, the apparatus including a biasing device which produces a biasing force to move the work-sheet pressing member in a downward direction toward the work-sheet supporting member, a solenoid which moves, against the biasing force, the work-sheet pressing member in an upward direction away from the work-sheet supporting member, a control device which controls an energization of the solenoid so that the work-sheet pressing member is moved in the downward and upward directions, a detector which provides a detection signal indicating that the work-sheet pressing member is moved in the downward direction to a braking position which is predetermined relative to the work-sheet supporting member, the control device receiving the detection signal from the detector, and the control device controlling the solenoid such that, when the control device receives the detection signal during the downward movement of the work-sheet pressing member, the solenoid reduces a speed of the downward movement of the work-sheet pressing member.

REFERENCES:
patent: 4455956 (1984-06-01), Yamamoto et al.
patent: 4587911 (1986-05-01), Kinoshita
patent: 4676179 (1987-06-01), Nomura et al.

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