Singer 321 KNITTER - Page 92

88
Nature of
Trouble
r
Places to be
Inspected
,
Causes
Remedy
Knitted
patterns
do
not
come
out
as
desired.
(Poor
Needle
Selection)
Poor
Needle
Selection
throughout
the
fabric.
Pattern
Unit If the perforated holes on
a Punched Card are
not
brought into line
with the
scanning fingers of Touch
Levers, the
scanning
fingers
get caught
by the holes,
making Touch
Levers unable
to work in accordance with
a Punched
Card, and
irregular appearance of
pattern
results.
Adjust Card Drum so
that the perforated
holes on a Punched
Card may be brought
into line
with the
scanning fingers
of
Touch Levers.
See page
53
Clearance between
Touch Levers and
Main Drum Pieces.
If
there is too
wide a
clearance between Touch
Levers and Main Drum Pieces,
Touch Levers get prevented
from pushing Main Drum
Piece sufficiently and a
poor memory results,
accompanied by Poor Needle
Selection.
Adjust the clearance
between Touch Levers
and
Main Drum Pieces
to be
correct.
See
page 62
r
Check the Clear Wire If the
length of Clear Wire
is not
correct,
Sub
Drum
Piece Clear Cam can not
clear
the used memory on
Sub
Drum.
I
Adjust the
length of
Clear Wire.
See
page 26
Check if
Rachet
Wheel is fed
properly
If a
clearance
exists
between
Rachet Wheel and
Feed Pawl, a Punched
Card
can
not be fed smoothly
nor
correctly, causing Poor
Needle
Selection to
happen.
Adjust Stop
Lever
Holder and
Feed Lever.
See
page 57