ADVANCING
THE
LOOPER
STROKE
High Lift Machines 262-3, 262-23, 262-24, 262-31,
262-32
Turn machine pulley over toward operator until
needle bar is just starting its upward stroke.
Maintain
this
position while completing the follow
ing
adjustment.
Loosen the two
set
screws
on bevel gear
as
shown
in
Fig.
31.
Rotate lower rotary shaft away
from
operator
(see
arrow. Fig. 31) until distance
from
center of front needle
to point of front looper is approximately
1/8
inch, as
shown in
Fig.
32.
Securely
tighten
two
set
screws.
SETTING
THE
NEEDLE
BAR
AT
CORRECT
HEIGHT
High
Lift
Machines
262-3,
262-23,
262-24,
262-31,
262-32
Set loopers at gauge
distance
from
needles and
time loopers
as
previously
instructed.
Turn machine pulley over toward operator until eye
of front looper reaches center of needle eye on forward
stroke of looper.
At this position, eye of needle and eye of looper
should be aligned, as shown in Fig. 33.
To adjust, loosen needle bar clamping screw shown
In Fig. 30, and raise or lower needle bar as
may
be
required.
Securely tighten needle bar clomping screw.
NOTE: On backward stroke, looper eye will
pass
below needle eye as shown in Fig. 34.
TIMING
THE
NEEDLE
AVOIDING
MOTION
During
its
forward
stroke, looper should pass behind
its corresponding needle as closely as possible with
out touching.
During
its backward strake, looper should
pass in front of its corresponding needle as closely as
possible without touching. The properly timed move
ments of the looper passing
from
behind needle to front
ond
from
front
of
needle
to
behind
are
called
needle
avoiding motion.
SET
SCREWS
ROTARY
SHAFT
\\
BEVEL
gear'
Fig. 31. Advancing
the
Looper Stroke
Fig. 32. Looper Stroke Advanced
Fig.
33. Needle Eye Aligned with Looper Eye on
Forward
Stroke
Fig.
34.
Looper Eye below Needle Eye on
Return
Stroke
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