US PATENT SUBCLASS 400 / 569
.~ By gear train (e.g., including a clutch)

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

545  DF  FOR LINE-SPACING BY INCREMENTAL ROTATION OF PLATEN {15}
569.~ By gear train (e.g., including a clutch)

DEFINITION

Classification: 400/569

By gear train (e.g., including a clutch):

(under subclass 545) Subject matter wherein the incremental rotation of the platen* is accomplished by way of a plurality

of toothed members, the teeth of which members intermesh to cause movement of one member when another member is moved, one of said members being connected to the platen.

(1) Note. Included in this subclass are disclosures in which a differential gear train or a planetary gear train is used, or in which a clutch device is used to connect a gear train to the platen.