Feed mechanism for sewing machines

Details Feed mechanism for sewing machines Feed mechanism for sewing machines

1976-06-25

1977-06-07

Krizmanich, George H.

Sewing

Stitch forming

Chain or double chain

112215, D05B 2708

Patent

active

040276090

ABSTRACT:
This disclosure relates to feed mechanisms for sewing machines, particularly industrial sewing machines. A reciprocatory advance motion is imparted to a feed dog means by an eccentric means connected to a driven shaft in the machine and to a feed advance shaft which imparts an oscillating motion to the feed dog means. A feed dog lift means for imparting a lift motion to the feed dog includes an eccentric means also connected to the driven shaft. The mechanisms for imparting advance motion and lift motion to the feed dog are connected to a common fulcrum pin to provide a sturdy and stable mechanism capable of operating at high speeds with minimum noise and vibration. A second feed dog means is provided which has a common advance mechanism and a similar lift mechanism as the first mentioned feed dog means with each of the feed dog means being individually adjustable to provide a differential feed system in which two work feeding elements are adapted to be actuated so as to exert unequal feeding actions on the work, if desired.

REFERENCES:
patent: 3174449 (1965-03-01), Bono
patent: 3368507 (1968-02-01), Orth
patent: 3382827 (1968-05-01), Hagen
patent: 3970018 (1976-07-01), Hager

Affiliated with

Also associated with

Rating

Feed mechanism for sewing machines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Feed mechanism for sewing machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feed mechanism for sewing machines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1231071