IBM 01 Maintenance Manual page 35

REFERENCE MANUAL MODEL 01
Toggle KnockOIlf Lever (TKO)
Worm Housing
Figure 14. Carriage Return Mechanism
a. It pulls down on the side knockout lever which through
linkage raises the toggle knockout lever (Figure 14). The
TKO lever strikes an ear on the pawl release lever and
rotates it in such a manner as to release the escapement
pawl from the rack and actuate the backspace interlock.
b. It moves the toggle link past center which locks the
clutch operating lever and causes pressure on the friction
disc. This pressure makes the clutch pulley turn and winds
up the carriage return tape. The first action of the carriage .
return tape is to pull down on the hook lever assembly.
This action allows the index pawl to enter a platen ratchet
tooth. The platen ratchet is then rotated until the index
pawl reaches its lower stop (Figure 15). All line spacing
motion is halted at this instant and the carriage starts to
move to the right. This motion continues until the left-hand
margin stop strikes the raised TKO lever. The TKO lever is
Upper Slop
0,.1",,,, Reller
Figure
15.
Index Pawl Stop Adjustment
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