Texi Joylock 2/4 77
EN
DIFFERENTIAL FEED
POSITIVE DIFFERENTIAL FEED
NEGATITVE DIFFERENTIAL FEED
The dierential feed has two
independent feed dogs, one front (A)
and one rear (B).
Each feed dog has an individual feed
mechanism which enables the feeding
of material at a dierent ratio.
WHEN SET FOR POSTITVE
DIFFERENTIAL FEED, the front feed dog
(A) makes a longer stroke than the rear
feed dog (B).
This has the eect of accumulating
material under the presser foot to
oset the wavering on the fabric.
WHEN SET FOR NEGATIVE
DIFFERENTIAL FEED, the front feed dog
(A) makes a shorter stroke than the rear
feed dog (B).
This has the eect of stretching
material under the presser foot to
oset the puckering on the fabric..