Atlanta Attachment Company 1315A, Technical Manual & Parts Lists

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Technical Manual & Parts Lists
35
Timing Looper Driving Crank
When the looper driving crank is properly
timed, the point of the looper will pass above the eye of
the needle at the same distance on both the forward and
backward strokes of the looper.
To adjust when the point of the looper passes
higher on the forward stroke, loosen the looper driving
crank set screw, Fig. 29. Loosen the looper crank
timing screw (left) approximately 1/8 turn, and tighten
the looper crank timing screw (right). Continue to
adjust until the correct adjustment is made. Then
securely tighten the set screw.
When the point of the looper passes higher on
the backward stroke, reverse the adjustment by
loosening the timing screw (right) and tightening the
timing screw (left).
Setting the Needle Guards
When the needle guards are properly set, they
should pass as close as possible to the needles without
touching. To adjust the guard turn the machine pulley
over toward the operator until the points of the loopers
are about to pass the needles on their forward strokes.
At this point, the looper timing mark LT on the
machine pulley should be approximately 1/8” above
the arrow on the machine arm. Loosen the needle
guard set screws, Fig. 30. Turn the needle guards as
close to the needles as possible without touching.
Tighten the set screws. Check by springing the needles
to the left and turning the machine pulley to make
certain that the looper points do not stroke the needles.
From
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Diamond
Needle
Corp