10.
THE
THREAD
TENSION
(Fig. 8)
The thread tension disc No.
Ci)
controls the tightness of the button
but only a light tension is required.
The
thread tension disc No. 2
(D
regulates the tension of the under
sideof the button but a stronger
tension
than the
disc
No.
1 is required.
To adjust the
tensions
of
these
discs,
turn the adjusting screw of the
disc toward the arrow direction to make the tension stronger
but
the
tension required will vary in relation to the types of thread, materials,
and
thickness
of
buttons
used.
11.
FUNCTIONS
OF
THE
THREAD
PULL-OFF
LEVER
(Fig. 9)
@0)
The
thread pull-off lever (Fig. 6 ®) controls the amount of thread
which is pulled through the tensions at the end of a stitching cycle to
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