US PATENT SUBCLASS 400 / 312
.~.~ Including pawl and escapement rack

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


400 /   HD   TYPEWRITING MACHINES

283  DF  CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11}
308  DF  .~ Carriage backspace mechanism {4}
312.~.~ Including pawl and escapement rack

DEFINITION

Classification: 400/312

Including pawl and escapement rack:

(under subclass 308) Subject matter wherein the carriage* is caused to be moved by the actuation of a key* element that moves a pawl* that interengages with one of the teeth of a ratchet* rack to drive the carriage in a backspace direction.