Presser-foot apparatus

Details Presser-foot apparatus Presser-foot apparatus

1979-06-28

1981-10-06

Schroeder, Werner H.

Sewing

Elements

Presser devices

D05B 2900, D05C 902

Patent

active

042929075

ABSTRACT:
Presser-foot apparatus is disclosed which is capable of automatically adjusting to various levels of sewing. The presser-foot is slidably held within a housing affixed to a needle bar. The presser-foot is biased against the housing so as to move in conjunction therewith until contact is made with the workpiece. The presser-foot exerts a steady, unvarying pressure on the workpiece while the needle associated therewith continues downwardly. The presser-foot is ultimately lifted from the workpiece during the upward retraction of the needle from the workpiece.

REFERENCES:
patent: 1714021 (1929-05-01), Gury
patent: 2386840 (1945-10-01), Colegrove
patent: 2633093 (1953-03-01), Russell
patent: 3026837 (1962-03-01), Enos
patent: 3244241 (1966-04-01), Ferwerda
patent: 3282237 (1966-11-01), Niekrawietz
patent: 3538872 (1969-01-01), Pell
patent: 3759202 (1973-09-01), Jean-Blanc
patent: 4060045 (1977-11-01), Vahle et al.

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