US PATENT SUBCLASS 400 / 304
.~.~ For kerning or overlap imprinting


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

283  DF  CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11}
303  DF  .~ For varying carriage feed {3}
304.~.~ For kerning or overlap imprinting


DEFINITION

Classification: 400/304

For kerning or overlap imprinting:

(under subclass 303) Subject matter wherein the movement of the carriage* in the character-space* direction is regulated to enable (a) imprinting a first character* symbol in a first character-space, moving the carriage to a distance less than a full character-space distance, and imprinting a second character different from the first character partly within the character-space of the first-character, or (b) imprinting a first character symbol in a first character-space, moving the carriage a very short distance relative to the first character-space, and imprinting the first character again almost within the first character-space, but only slightly displaced from the first character.

(1) Note. The operation described in (a) above is known as "kerning" and is sometimes used to form a compound letter symbol out of two standard letter symbols. The operation described in (b) is known as overlap imprinting and is sometimes used to form a "boldface" letter symbol.

SEE OR SEARCH THIS CLASS, SUBCLASS:

210, for a ribbon used for boldface typing.