Sewing machine having presser bar system for maintaining constan

Details Sewing machine having presser bar system for maintaining constan Sewing machine having presser bar system for maintaining constan

1995-04-17

1996-09-03

Nerbun, Peter

Sewing

Method of sewing

112235, 11247001, D05B 2902

Patent

active

055513611

ABSTRACT:
A sewing machine having a presser bar with a force transducer mounted thereon for detecting forces applied to the presser bar during high speed sewing and an electromagnetic actuator operatively connected to the presser bar. Circuit means is electrically connected to the force transducer and to the electromagnetic actuator and is adapted to control current to the electromagnetic actuator so as to maintain a constant contact force between the presser foot and a fabric being sewn.

REFERENCES:
patent: 4726309 (1988-02-01), Popp
patent: 4873931 (1989-10-01), Takagi et al.

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