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IBM ELECTRONIC MULTIPLIER User Manual page 34

Electric punched card accounting machines

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T Y P E
6 0 3 E L E C T R O N I C
M U L T I P L I E R
Bend
here
Fi&re 36. Punch Bail Tonkue Adjustment
punch bail tongue and are driven
TO
their extreme
downward limit by -the punch bail.
The interposer spring bail should be positioned
so that it does not touch the interposers when the
interposers are engaged with the punch bail
'tongue and are driven to their extreme downward
limit.
Check several interposers at each end.
Punch Magnet Armatures
The magnet armatures should be adjusted so that
the interposers will move l i 8 " toward the magnets
when the armatures are a~tracted. The 1/8" tra-
vel is obtained by increasing or decreasing the
armature air gap by bending the armature just
above the point where the pull rod connects (Fig-
ure 37). The inrerposers should line up when in
a normal position and should move freely.
Punch Bail Connecting Links
There must be a perceptible movement between
the punch bail tongue and the interposers when
the bail is in its uppermost position.
This condi-
tion prevenn binds and also provides for a mini-
mum travel of the punches into the die. Proceed
as follows:
1.
Remove the front punch bail connecting
link pin.
2 .
Turn the machine until the punch bail is in
the extreme upward position (eccentric u p ) .
Figure 37. Punch Magnet Armature Adjustment
3.
Adjust the rear punch bail connecting link
adjusting screw for a slight clearance (.003") be-
tween the punch bail tongue and the interposers.
(Figure 36). If there is any variation in the clear-
ance from one end to the other, the .003" clear-
ance should apply to the closest end. This may be
checked with a leaf gauge or by moving the inter-
posers.
4.
Adjust the front connecting link adjusting
screw so that the front punch bail connecting pin
'
will slide freely into posi.tion in the punch bail and
punch bail connecting link. This assures an even
adjustment on both connecting links and elimin-
ates strain on the punch bail.
After adjusting the connecting link adjusting
screws, check to see rhat the punches are not
jammed down against the punch stop bar. Check
in the following manner:
1.
Engage the interposer at each end of the
punch bail and turn the machine until the punch
bail is at its exrreme downward limit of travel.
2 .
Press on the top of the interposer with a
screwdriver and check for a slight movement.
The punch stop bar should be set as near the
punch as possible without inrerfering with the
movement of the punch.

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