Pfaff coverlock 4872 User Manual

Differential
feed
The
differential
feed consists
of two
feed
dogs
(A
+ B),
one
behind
the
other, which
feed
the
fabric.
The movement
of
the
front
feed
dog (A)
and
thus the
amount
of
material
to be
fed
can
be
regulated
using
the regulator
wheel
49.
The setting
range
is
between
0.5
and
2.0.
The
standard
setting
is 10,
where
the
movement
of
the
front
feed dog
(A)
is
synchronized
with
the rear
feed dog
(B).
This means
that the
front
feed
dog
feeds
the
same
amount
of fabric
as the rear
feed
dog.
Note:
The function
of
the differential
feed
is
independent
of the
set
stitch
length
and
the
type
of
fabric
being used.
Set the
regulator
wheel
for the differential
feed
49 to
0.5.
Here
the front
feed
dog feeds
half
as
fast
as
the
rear feed
dog.
This
means
that the
front feed
dog
feeds
only half
as
much fabric
as the
rear
feed
dog,
causing
the fabric
to stretch.
Here
you
will
avoid ruffling
in
the
seam
when
working
with very
light
fabrics,
such
as silk
and taffeta.
Instead,
a
smooth seam
(A)
will
be
achieved.
You
can also
achieve
fashionable
effects
with
the differential
feed
dog,
for example
the wavelike
effect
when
using
a
rib
knit
(B).
A
38

Pfaff coverlock 4872 Specifications

General

Brand	Pfaff
Model	coverlock 4872
Category	Sewing Machine
Language	English