US PATENT SUBCLASS 400 / 670
.~.~ End-of-page lock (e.g., responsive to preset condition)

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

663  DF  LOCKING OR INTERLOCKING MECHANISM {7}
668  DF  .~ Locking means actuated in response to a condition {4}
670.~.~ End-of-page lock (e.g., responsive to preset condition) {2}
670.1  DF  .~.~.~> Responsive to end-of-page sensor
670.2  DF  .~.~.~> Including lock for platen or line-space {1}

DEFINITION

Classification: 400/670

End-of-page lock (e.g., responsive to preset condition):

(under subclass 668) Subject matter wherein the preventing means is made effective when a predetermined state of the typewriter has been reached, which state corresponds to the termination of a page* of typed text.

(1) Note. The preset condition that causes locking may be the passage of the bottom edge of a sheet past a particular point on the typewriter, the typing of a predetermined number of print-lines* of type, etc., or any condition that actuates a lock so that no further print-lines may be typed on that particular page.