Piercer
Bar
PIERCER
TT
The piercer bar is adjustable for a higher
or lower position of
the
piercer.
The
piercer
should
be
set
to
rise
to
the
correct
height,
clear
of
the
material,
and
the feed should complete its
forward
move
ment before the piercer enters the goods,
otherwise clear openings cannot be made.
The
jiiercer
should
be
timed
so
that
it
will
enter
and
spread
the
material to its
widest
opening
as
the
needles descend
with
their points housed in the grooves of the
piercer.
To change the time of the piercer in
relation to the needles,
move
eccentric (ik
see Fig. 2) on
the
arm
shaft
for an earlier
or later movement of the piercer.
Should
it be necessary to
remove
piercer
(TT, sec Fig. 18) it is preferable to detach
holder (UU) at screw (ABS).
Fig.
18
AB—Piercer
Bar
ABS—Piercer
Holder
Screw
TT—Piercer
UU—Piercer
Holder
VV—Piercer
Screw
ADJUSTABLE
HEMSTITCH
PRESSER
FOOT
Usually there is but one thickness of goods under the outside
(shire side) foot plate, while there are several thicknesses under
the inside (hem side) foot plate.
To set the
outside
lower
than the
inside
foot
plate,
loosen
the
pinch
screw
and
turn
outward
the
upright
screw,
then
tighten
the
pinch
screw.
Adjust the pressure on the
foot
plates so as to
maintain an even pressure although the thickness of the material
to be hemstitched may vary or be changed.
To increase the pressure on the material under the outside
foot
plate,
loosen
the
collar
and
push
it
down
to
compress
the
spring.
For
more
pressure on the
inside
foot
plate,
turn
down
the
thumb
screw
on
top
of
the
arm,
and
for
less
pressure,
turn
it
up.
Flat
work
requires
an
even
pressure
on the
foot
plates.
The
lowest
screw
holds
the
presser
foot
on
the
presser
bar.
Careful adjustments will produce the desired effect.
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