Operation of the Pfaff
238-14/2
is basically the same as of the Pfaff
238-14/1,
except that
the material is turned about the center stud by a positively driven rotary feed rather
than
by
hand.
The
Pfaff
238-14/2
is
available
in
two
varieties:
Group I for
center
studs
of from 5/64" to 15/32" {2-10 mm) dia.
Group
II
for
center
studs
of from 7/16" to 23/32" (11-18 mm) dIa.
Ail that is required to
change
the size of the eyelet within
one
of the
above
groups
is
to exchange the slide with
center
stud and the
presser
ring disc In the eyeletting foot.
When
changing
over
from
group
I to
group
II, or vice versa,
the
rotary feed
has
to be
exchanged
in addition. This
conversion
job
can
be
performed
by every
mechanic
in a
few
minutes.
The
mechanical
setup
of
the
rotary-feed eyeletting unit is illustrated in Fig. 22.
Fig.
22
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