US PATENT SUBCLASS 400 / 320.1
.~.~.~ With concurrent movement of carriage for record-medium and carriage for type-head-carrier

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

283  DF  CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11}
319  DF  .~ Carriage-feed mechanism (e.g., escapement, etc.) {14}
320  DF  .~.~ For carriage on which a type-head-carrier is mounted {1}
320.1.~.~.~ With concurrent movement of carriage for record-medium and carriage for type-head-carrier

DEFINITION

Classification: 400/320.1

With concurrent movement of carriage for record-medium and carriage for type-head-carrier:

(under subclass 320) Subject matter wherein a typewriter is provided with two carriage* mechanisms, one of which carriage (i.e., a "platen carriage") supports a platen that holds a record-medium* for movement of both the platen and the record-medium in a character-space* direction and the other of which carriage (i.e., a "type-head* carriage") supports a type-head-carrier* for movement of both the type-head carriage and the type-head-carrier in a character-space direction.

(1) Note. As discussed in the Glossary, section III, under the definition of carriage, usually the direction of carriage feed for a platen carriage is from right to left, whereas the direction of carriage feed for a type-head carriage is from left to right (but note the note exceptions discussed in that definition).