US PATENT SUBCLASS 400 / 346
.~.~.~ Print-line locking function

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

283  DF  CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11}
342  DF  .~ Margin-regulator (e.g., adjustable margin-stop) mechanism {7}
344  DF  .~.~ With other typewriter function controlled by margin-stop (e.g., signal, line-space) {2}
346.~.~.~ Print-line locking function

DEFINITION

Classification: 400/346

Print-line locking function:

(under subclass 344) Subject matter wherein the carriage* is caused or enabled to be moved in a carriage-feed (i.e., character-space*) direction, and the movement in that direction is stopped by the margin-stop* and also causes the key* elements to be locked to prevent pressing any of the

character* keys so that no further character symbols may be imprinted on the record-medium*.

(1) Note. The typewriter of this subclass is provided with a margin-stop to stop the carriage at the end of its print- line*. However, the margin stop may be released by a margin-stop-release key on the keyboard*, the pressing of which key will disengage the locking of the carriage and of the key elements so that several more characters may be imprinted on the print-line.