.~.~ Including power drive (e.g., electric, spring, etc.) {3}
317.2
.~.~.~ By spring-driven motor
DEFINITION
Classification: 400/317.2
By spring-driven motor:
(under subclass 317) Subject matter wherein the carriage is moved in its return movement by way of energy that is stored in a resilient or yieldable component connected to a drive train that moves the carriage.
(1) Note. The power for winding the spring to store energy that will subsequently be used during typing to return the carriage whenever so desired by the typist maybe supplied by an electric motor or may be supplied by the user of the typewriter. Disclosures of this form of spring energy are properly classified herein because the energy is stored and not applied by the typist at the time of carriage return.
