Sewing machine presser bar mechanism

Details Sewing machine presser bar mechanism Sewing machine presser bar mechanism

1976-12-22

1977-11-15

Krizmanich, George H.

Sewing

Elements

Presser devices

D05B 2902

Patent

active

040580717

ABSTRACT:
A low inertia presser bar system for a sewing machine has a short hollow presser bar including a light internal compression spring with an abutment member on top engaged in a depression in the underside of an arm of a fulcrumed bell-crank lever. An upper presser bar having a heavy spring is linked to the upper side of the same arm of the lever. A stop member is threaded into the head of the sewing machine to engage the other arm of the bell-crank lever to oppose and thereby limit the force of the upper spring and isolate the lower spring and presser bar until the lower spring is compressed solid.

REFERENCES:
patent: 2611333 (1952-09-01), Ritter
patent: 3793969 (1974-02-01), Adams
patent: 3863580 (1975-02-01), Marforio

Affiliated with

Also associated with

Rating

Sewing machine presser bar mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sewing machine presser bar mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sewing machine presser bar mechanism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1715301