US PATENT SUBCLASS 400 / 290
.~.~ Forward or reverse tabulation


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

283  DF  CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11}
284  DF  .~ For stopping carriage in tabular position (e.g., column-set positions) {10}
290.~.~ Forward or reverse tabulation


DEFINITION

Classification: 400/290

Forward or reverse tabulation:

(under subclass 284) Subject matter wherein the carriage* is caused to be moved and is caused to be stopped in a position corresponding to a print-point* for the start of a column of character* symbols, the movement occurring in a character-space* direction, or the carriage is caused to be moved in a direction opposite to the character-space direction and caused to be stopped in a position corresponding to a print-point for the end of a column of character symbols.

(1) Note. The typewriter of this subclass is sometimes also provided with a carriage-shuttling mechanism, which enables the carriage to travel in a forward or a reverse direction directly between tabular positions without having to first return to home position following a tabulating movement.