Universal UN50 - Page 9

When the
upper and
lower tensions
are
properly
balanced,
a
perfect stitch
will
be
formed
with
both
threads
interlocking
in
fabric (Fig.
13).
When the upper tension
is
too
tight, the lower thread is
pulled
up
over
the
upper thread
which
is
lying flat
on
the
fabric
(Fig.
14).
When
the
upper
forms
loops over the
(Fig.
15).
‘
c\\
c’
‘\
:\\‘
\\‘‘
“
‘
Fig.
14
Fig.
15
FEEDING
OF FABRIC
The
height
of
the
feed
dog
may be
regulated
according
to
the
thickness
of
the
material
being sewn,
by
proper
setting
of
the
push
buttons.
1.
In
sewing
on
thin
materials,
such as
silk,
creape
de
chine
etc.,
push
the button
marked
“DOWN” down as
far
as
the
while line.
2.
In
sewing
on
thick
materials, such
as
overcoats, push the
button
marked
“UP” down
as
far
as
it
will
go.
3.
When it
is
necessary
to
turn
the work
freely
as
in
embroidering
and
button
sewing,
push the button
marked
“DOWN”
as
far
as
it
will
,oosen
Fig.
12
;
‘% -4
•y
///// Q/
tension
is
too loose,
the upper thread
lower
thread
lying
flat under
the
fabric
Fig. 1
go.
Fig.
16