Lateral movement feed dog for a sewing machine

Details Lateral movement feed dog for a sewing machine Lateral movement feed dog for a sewing machine

1986-09-03

1987-09-08

Schroeder, Werner H.

Sewing

Stitch forming

Feeding work material

112324, D05B 2700

Patent

active

046916547

ABSTRACT:
A feed mechanism for a sewing machine with a material feed dog includes a support for a feed dog which is attached thereto and which is slidably mounted on a feed link and is connected with a drive for its transverse motion that is controlled independently of the main shaft. To effect a low inertia drive, the drive includes a link mounted on a pin firmly fixed to the housing. The link has a bearing drive piece eccentrically positioned with respect to the pin and in drive-contact with the feed dog support. The drive piece comprises an eccentric that surrounds the pin and abuts against a side surface of the support, thus providing a simple drive mechanism. In order to ensure low-friction transmission, the side surface of the support which is in contact with the eccentric is constituted by an abutment piece and in addition, transmission is accomplished via a roller bearing surrounding the eccentric.

REFERENCES:
patent: 1354514 (1920-10-01), Seymour
patent: 3026832 (1962-03-01), Taketomi
patent: 4619214 (1986-10-01), Baruffa et al.
patent: 4633796 (1987-01-01), Hoffmann-Glewe et al.

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