US PATENT SUBCLASS 400 / 307.2
.~.~.~ By cooperating toothed members (e.g., gear, segment, rack, etc.)

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

283  DF  CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11}
303  DF  .~ For varying carriage feed {3}
306  DF  .~.~ Proportional to variable widths of imprinted characters {4}
307.2.~.~.~ By cooperating toothed members (e.g., gear, segment, rack, etc.)

DEFINITION

Classification: 400/307.2

By cooperating toothed members (e.g., gear, segment, rack, etc.):

(under subclass 306) Subject matter wherein the irregular increments of carriage* movement are caused by drive means that includes at least two components, each of which is formed with notches or teeth, the notches of one component intermeshing with the notches of the other so that movement

of one component is transmitted to the other component.

(1) Note. Included in this subclass are drive means having gears or differential gears, or gear and rack. or gear segment and gear, in many arrangements of such components.