Sewing – Stitch forming – Blind stitch
Patent
1991-10-15
1993-02-02
Falik, Andrew M.
Sewing
Stitch forming
Blind stitch
D05B 124
Patent
active
051829991
ABSTRACT:
The invention concerns a sewing machine having a sewing-material feeder to advance the material being sewn in a step-wise manner and having furthermore a drive shaft pivoting to-and-fro in order to intermittently move the sewing-material feeder in the direction of advance of the material being sewn. The drive shaft includes a radially projecting drive crank connected by a linkbar of corresponding length to an output crank pivotably supported on a sleeve to pivot about an axis parallel to the drive shaft. The sleeve is rotatably supported on an output shaft cooperating with the sewing-material feeder and can be rotated by means of a stitch-length adjustment device. The output shaft is also parallel to the drive shaft and is driven by the output crank through a transmission provided on the sleeve. By this arrangement, a high compactness and a very advantageous force transmission between drive and output shafts can be achieved.
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patent: 4444142 (1984-04-01), Meier
patent: 4476795 (1984-10-01), Vollmar
patent: 4495877 (1985-01-01), Willenbacher
patent: 4624202 (1986-11-01), Alberti et al.
patent: 4706584 (1987-11-01), Senda et al.
Falik Andrew M.
J. Strobel & Sohne GmbH & Co.
Lewis Paul C.
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