Margin Set - IBM 01 Maintenance Manual

REFERENCE MANUAL
MODEL B1
2. UNIVERSAL BAR.
Adjust so that all type bars trip the
escapement pawl at the same distance from the platen.
The rear spring of the universal bar is mounted to the
support by a hexagonal screw which passes through an
enlarged hole in the spring. To position the universal bar
for an equal tripping point, loosen the screw to free the
spring from the support (Figure 9). Then position the three
type bars close to the type guide as shown in Figure 9,
so that they hold each other in position. Tighten the screw
to lock the universal bar in position and test the adjust-
ment by operating the type bars by hand to observe that
the tripping point is equal.
If the center type bars trip too late or early in relation
to the end type bars, the support of the universal bar may
be formed slightly up or down to correct this condition.
3. ADJUSTING PLATE ON UNIVERSAL BAR.
Position
this so that the escapement pawl will be tripped at the
same point for both upper and lower case (Figure 9).
4. TRIP LINK.
Adjust the link (Figure
9)
to trip the es-
capement pawl when any type face is 3/8"
±
1/8" from
the platen or within areas designated in Figure 10.
~
Platen
==~==~====
Tripping Point
Q~
Type Guide
I'TYP"Bor
Figure 10. Escapement Tripping Point
MARGIN SET
Removal
The margin set lever may be removed by removing the
mounting shaft or screw which holds it to the margin set
bracket (Figure 11).
Adjustments
1.
MARGIN SET BRACKET.
Adjust by positioning the
bracket on the rear frame so that the set lever enters
squarely into the notch on top of the stop when the 'car-
riage is resting at the margin.
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