Method and apparatus for adjusting the looper operation locus of

Details Method and apparatus for adjusting the looper operation locus of Method and apparatus for adjusting the looper operation locus of

1974-11-14

1976-04-27

Guest, Alfred R.

Sewing

Stitch forming

Chain or double chain

D05B 106

Patent

active

039526747

ABSTRACT:
The upper looper of a sewing machine is held and guided in its intermediate part by a looper guide movable therewith in the lengthwise direction. The guide rotates around a shaft upon which a rotary carriage is journalled, and is movable in a direction intersecting with the looper guiding direction, with respect to the carriage. The looper is carried on its other end by a reciprocally rotatable rocking arm. The other end of the rocking arm is connected to a driving rod which is driven by a driving shaft.

REFERENCES:
patent: 2811940 (1957-11-01), Marforio
patent: 3670677 (1972-06-01), Hirayama

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