IBM 01 Maintenance Manual page 23

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REFERENCE MANUAL MODEL 01
Peo::ln
Mork~
Figure 5. Peening a Cam Lobe
hauls. Replace if it is grooved or rusted. Lubricate the wire
with IBM lubricant 17 or IBM ET eil whenever it is
removed.
ESCAPEMENT
The universal bar transfers motion from the type bar to
the escapement mechanism. It allows the carriage to move
one space under main spring tension for each type bar
stroke. The escapement mechanism uses two pawls operat-
ing in a rack having one tooth every two spaces. As a type
bar is driven toward the platen, it pushes the universal bar,
the trip link, and the bottom of the trip lever to the rear.
This action rocks the trip lever. The pawl spacer (located
between the pawls) is driven forward against the tail of the
escapement pawl that is holding the escapement rack. The
pawl is tripped out and is snapped about
~"
along the rack
to the next tooth. The other pawl holds the rack and car-
riage (Figure 6).
Pawl
Spacer
Escapement
Trip Lever
1I:'5~l=:~_E5Copement
Pawls
Figure
6.
Adjusting the Universal Bar
11