Adjustment device for feeding cloth in a cloth transport mechani

Details Adjustment device for feeding cloth in a cloth transport mechani Adjustment device for feeding cloth in a cloth transport mechani

1989-11-30

1991-05-28

Nerbun, Peter N.

Sewing

Stitch forming

Feeding work material

112316, D05B 2722

Patent

active

050184679

ABSTRACT:
An adjustment device for the amplitude and direction of feed of cloth in a cloth transport mechanism for a sewing machine comprises a slideway centered on a trajectory in contact with a pivot pin between a connecting rod integral with an eccentric of a drive shaft and a short connecting rod linked to a lever associated with one end of the cloth transport member. This slideway may be oriented about a point situated in the middle of the trajectory of the pivot point to modify the inclination of the trajectory, and, in this way, the amplitude and the direction of the feed. To avoid any play between the slideway and the pivot pin, this latter carries two rollers in the shape of truncated cones, and the slideway has two tracks, inner and outer, displaced axially along the axis of pivoting in such a manner that each roller can only be put in contact with one of the two tracks by a resilient pressure and can roll without slipping against it.

REFERENCES:
patent: 1025139 (1912-05-01), Huffman et al.
patent: 2218287 (1940-10-01), LeVesconte
patent: 2711145 (1955-06-01), Pagni
patent: 4095540 (1978-06-01), Kaltenbach et al.
patent: 4444142 (1984-04-01), Meier
patent: 4501213 (1985-02-01), Meier
patent: 4584955 (1986-04-01), Sano
patent: 4638752 (1987-01-01), Hartwig
patent: 4756263 (1988-07-01), Sano

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