400 / | HD | TYPEWRITING MACHINES |
|
545 | DF | FOR LINE-SPACING BY INCREMENTAL ROTATION OF PLATEN {15} |
555 | DF | .~ By irregular increments of platen rotation (e.g., for adjustment of platen relative to its actuator, etc.) {6} |
556 | DF | .~.~ Including disconnecting ratchet wheel from platen (e.g., declutching ratchet, etc.) {6} |
560 | DF | .~.~.~ Via frictional engagement of periphery of cylindrical member {1} |
560.1 | DF | .~.~.~.~ Friction member(s) acting on inner periphery of drum {2} |
560.2 | | .~.~.~.~.~ Pivotable member(s) |