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8-4
Adj
usting
Main
Drum
the
Clearance
Between
the
Touch
Lever
and
Piece:
\
,t
fn
case
of imperfect
adjustment
of the
clearance:
Wtren
a
Punch
Card
is inserted into the
Centre pane.I,
the
Touch
tevers read the patteln by
pushing
their
Scanning
Fingers into
the
Card
holes.
Those Touch
Levers
lemaining in i iower posit_
ion,
push
the
Main
Drum
Pieces.
However,
in the
case
that
there
is too
much
cleatance
betra'een
the
roucn r,eveis-ana-in" U.irl
Drum
Pieces, the
Touch
Levers are unable
to transrnii
the
pattern to the
Main
Drum.
Coftecting
Methods:
l. Insert
an
Np
Card
into
the
Centre
panel.
Loosen
six
+pW
pan
Head
Screws
(3x6).
which secures
the pattern
Base
to
the
Needle
Bed
Bracer
A-
Fig.
't2
2.
As
shoJrn
in Fig. 73.
move
the
Carriage so
that the
Main
Drum
is
aLigned
with a
Touch
Lever.
Move
ihe pattern U;it
towards
the
Main Drun
so
that the
clearance
between
the
l4ain
Orum
Piece
and
the
Touch
Levers
will fall i4ithin a
range
of
O.2 n/m.
Touch Lever
S
lightly
!4ain Dlun Piece
s.
73
3. After the
adjustment has
been completeal,
fasten the six
screws
anil
examine
whether
or not the louch
Levers q/ork
correctfv-
NOTE:
Whenever
the Pattern Unit is
removed
from
the
machi'ne,
be sure
to adjust
Lhe
clearance
bet\reen
the
Touch Levets
and
Main
Drum
Pieces,
when renrounteal.
+
PW
Pan Head
Screws
(3x6)
Touch
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