26
(CAUTION: Be sure that the point of the knife touches
the top of the Throat Plate, otherwise part of the fabric may
pass
between
the
Knife
and
Throat
Plate
and
some
be
cut
and some of it torn, resulting in ragged and unsatisfactory
work.)
12.
Make a careful inspection to see that all parts are in
posi
tion as described, test screws and nuts and see that they are
properly tightened. If found correct and you have the Attac'.i-
ment in proper position, you are now ready to operate.
(CAUTION:
More
care will
have
to be
exercised
by the
operator
when
using
a
hemstitch
machine fitted
with
a Picot
Edge Cutting Attachment than on hemstitching
alone.)
Before
using this Attachment on a garment, the operator
should
try it out on scrap material, operating the
machine
at slow speed until thoroughly familiar with it.
Special
care should be exercised in respect to the bobbins,
so
that
they
are
not
allowed
to
run
out.
In
view
of
the
fact
that the hemstitch feeds only every third stitch, the machine
can
be
easily
stopped
when
a
thread
breaks,
without
cutting
more
than one bar, and this is
easily
repaired
by going over
the unstitched
place,
using underneath a
small
piece
of the
same
material.
13.
When it is
desired
to do straight hemstitching with the
Attachment
in
place,
loosen
Thumb
Nut
201634d,
Fig.
19,
and push it to the backend of the slot, then tighten it. This
will
raise
the
lower
knife
so as to permit the
fabric
to
pass
under
it.
TO
REMOVE
THE
KNIFE
BLADES
FOR
SHARPENING
Remove
the Cap Screw
200162d,
Fig.
20,
together with
Spring
221486,
Fig.
20,
and
Hinge
Screw
350125f,
Fig.
20,
push
back the knife blade Hinge Stud
234724,
Fig. 19; both knife
blades can then be easily removed or replaced.
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