Automatic machine for stitching of various articles, in particul

Details Automatic machine for stitching of various articles, in particul Automatic machine for stitching of various articles, in particul

1992-08-17

1993-05-04

Crowder, Clifford D.

Sewing

Special machines

Leather sewing

112 62, 112310, 112321, 112235, D05B 1500, D05B 2720

Patent

active

052071693

ABSTRACT:
In a machine with a longitudinal guide forming, at both sides, two working surfaces, onto which articles are arranged for sewing their upper edges, there is provided a wrinkling device in which two vertical presser feet, inner and outer, are moved vertically in an independent manner and in time relation with the motion of a needle, so that they make wrinkles on an edge of the articles, in alternate position with stitches. The needle, provided with a thread, cooperates with a rotary hook connected with a spool of stitching thread; the needle extends in an arc concentric to a shaft that moves the needle with oscillatory and translatory longitudinal to-and-fro motion.

REFERENCES:
patent: 2029099 (1936-01-01), Gouldbourn
patent: 2046933 (1936-07-01), Berger
patent: 3056363 (1962-10-01), Bergeron
patent: 3081719 (1963-03-01), Fake
patent: 3187703 (1965-06-01), Fake
patent: 4274345 (1981-06-01), Schneider et al.
patent: 4848252 (1989-07-01), Ciucani

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