Sewing machine with guide and ironing means for folding back and

Details Sewing machine with guide and ironing means for folding back and Sewing machine with guide and ironing means for folding back and

1989-11-08

1990-05-29

Nerbun, Peter

Sewing

With tables or stands

For plural sewing units

112147, 11212111, 38 1B, 1565801, D05B 3502

Patent

active

049286110

ABSTRACT:
A sewing machine provided with guide means and ironing means having an ultrasonic heating means. The guide means folds back the free margins of an upper and lower fabric pieces, and the folded margins are pressed or ironed by the ultrasonic heating means. The ultrasonic heating means includes an ultrasonic horn and an anvil relatively movable toward and away from each other. A thickness detector is provided for detecting a combined thickness of the upper and lower fabric pieces, and control means is also provided for controlling one of the heating energy of the ultrasonic heating means and a distance between the horn and the anvil in response to the detected thickness.

REFERENCES:
patent: 3246616 (1966-04-01), Korioth, III
patent: 3587496 (1971-06-01), Timby
patent: 3976020 (1976-08-01), Aulich et al.
patent: 4098205 (1978-07-01), Kawashima
patent: 4373892 (1983-02-01), Kreager et al.
patent: 4495879 (1985-01-01), Yamamoto
patent: 4633794 (1987-01-01), Kato
patent: 4750955 (1988-06-01), Haguenier
patent: 4823713 (1989-04-01), Ogawa et al.

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