Eyelet buttonhole sewing machine

Details Eyelet buttonhole sewing machine Eyelet buttonhole sewing machine

1999-06-28

2000-04-04

Nerbun, Peter

Sewing

Special machines

Buttonhole

112 73, D05B 308, D05B 2100

Patent

active

060447818

ABSTRACT:
A sewing machine with a table (9) driven by two motors (60, 80) in two directions (x, y) and receiving sewing material (36), with sewing implements and with a cutting device (34) for producing, in the sewing material (36), a buttonhole (28) which is provided with an incision (32) and which is delimited by zigzag stitches of a buttonhole bead (26, 27; 26', 27') which run around the incision (32), the incision (32) being produced before or after sewing the zigzag stitches. The sewing implements include a needle bar (4), driven up and down, and oscillating in the horizontal direction to form the zigzag stitches, and a needle (6), which is provided at the lower end of the needle bar (4) and which cooperates with a looper (11) mounted in the baseplate (12). The sewing implements are further driven in rotation by a third motor (13). The sewing machine also includes a control unit (90), which can store various buttonhole shapes and control the other components. The zigzag oscillating range of the needle (6) is permanently set and is constant, and, in order to form the buttonhole bead (26, 27; 26', 27'), the table (9) is driven in oscillation at the same frequency and in either the same direction as the oscillation of the needle (6) or opposite to the direction of oscillation of the needle (6).

REFERENCES:
patent: 1991627 (1935-02-01), Reece
patent: 5752456 (1998-05-01), Nishizawa
patent: 5873314 (1999-02-01), Gamano et al.

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