US PATENT SUBCLASS 400 / 294.2
.~.~.~ With key-locking mechanism

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}
294  DF  .~.~ Stop-setting or stop-clearing mechanism {7}
294.2.~.~.~ With key-locking mechanism

DEFINITION

Classification: 400/294.2

With key-locking mechanism:

(under subclass 294) Subject matter wherein the typewriter is provided with means to prevent activation of the key* element that effects tabulation or the key element that effects any action or function* other than the setting or clearing of a "tab-stop" element during the time that the tab stop is cleared or set.

SEE OR SEARCH THIS CLASS, SUBCLASS:

663, for other locking mechanism in a typewriter.