.~ By friction drive (e.g., including regulation of increments)
DEFINITION
Classification: 400/571
By friction drive (e.g., including regulation of increments):
(under subclass 545) Subject matter wherein the incremental rotation of the platen* is accomplished by way of two members, each member having a surface in nonsliding contact with the other, one of which members is connected to the platen and the other of which members is connected to an actuator that is moved when platen rotation is desired.
(1) Note. In some typewriters of this subclass a predetermined extent of movement of the actuator effects a predetermined number of degrees of rotation of the platen, which number of degrees comprises a predetermined number of steps or increments of platen rotation, and the number of such steps effected by any movement of the actuator may be changed from one predetermined number of steps to a different predetermined number of steps, whereby a change may be made in the number of degrees of platen rotation that is accomplished by an extent of actuator movement. The change may be accomplished by changing the amount of actuator
movement, or by changing the range of actuator movement over which the actuator is effective to cause platen rotation.
