(1)
Needle
Bar Rise
The amount of needle
bar
rise required to form the loop is
V35",
or 2.4
mm. This means that the point of the shuttle should be opposite the center
line of the needle when the letter has passed the lowest point of its stroke
and risen
V32".
Make sure you turn the driving pulley counter-clockwise,
as
viewed
from
the
back
of
the
machine.
The
correct
amount
of
needle
bar
rise can be set easily with the aid of
gauge
No. Z 70.67-2 (Fig.
19}.
Fig. 19 Setting the
omount
of
needle
bar
rise
To moke this adjustment, turn driving pulley to bring needle bar to its
lowest
position.
When
the needle has reached the
lowest
point of its
stroke,
the
shuttle
should
be at
its
left
point of reversal. Slip both the clamp and
the
gouge
onto the
needle
bar,
positioning
the latter
between
the
clamp
and the
bottom
of the needle bar
frame.
Push
the
clamp
up against the
gauge,
and
tighten the clamp screw. To moke sure the needle
bar
is
at
the
34
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