US PATENT SUBCLASS 400 / 300
.~ Key-actuated mechanism for nonfeed of carriage (e.g., "silent" key, locking carriage, etc.)

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

283  DF  CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11}
300.~ Key-actuated mechanism for nonfeed of carriage (e.g., "silent" key, locking carriage, etc.) {2}
301  DF  .~.~> By disabling carriage-escapement mechanism
302  DF  .~.~> By key actuated independently of carriage feed

DEFINITION

Classification: 400/300

Key-actuated mechanism for nonfeed of carriage (e.g., "silent" key, locking carriage, etc.):

(under subclass 283) Subject matter wherein the carriage* is normally caused to be moved in a direction that enables the character* symbols to be imprinted in succession (i.e., the character-space* direction) by or concurrently with successive pressing of successive character key* elements, but wherein significance is attributed to a mode of operating the typewriter whereby pressing of a particular key element will not cause movement of the carriage.

(1) Note. The purpose of this mechanism is to permit the imprinting of a character* symbol without an accompanying character-space* movement of the carriage, thereby permitting two or more symbols to be imprinted at the same print-point*. The mechanism thus permits a letter and an accent mark, or a letter and a vowel symbol, or two different letters (these being only exemplary of the possibilities), to be imprinted at the same print-point.