Upper cloth feed in a sewing machine

Details Upper cloth feed in a sewing machine Upper cloth feed in a sewing machine

1982-05-03

1984-10-16

Schroeder, Warner H.

Sewing

Stitch forming

Feeding work material

D05B 2704

Patent

active

044767960

ABSTRACT:
An upper cloth feed in a sewing machine comprises a presser foot and an upper cloth feed foot, each connected over a linkage with a feeding and lifting drive. The drive is connected over a connecting member with a substantially vertically moving carrier for the presser foot. A spring acts on the connecting member, and an idle stroke connection is provided inside the lifting drive. For the adjustable distribution of the pressure force on the two sewing feet, the force of the spring acting on the substantially horizontally moving connecting member is variable. In order to obtain a simple constructional design, the spring presses over a pressure rod on a pressure piece mounted for displacement on the connecting member.

REFERENCES:
patent: 3757714 (1973-09-01), Gustmann et al.
patent: 3927629 (1975-12-01), Vollmar
patent: 4285294 (1981-08-01), Aida

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